[文章]：加筋挡土墙设计与施工

qinhl96

<p ALIGN="CENTER">加筋挡土墙设计与施工</b></font><font FACE="楷体_GB2312"
SIZE="1"></p>

<p ALIGN="JUSTIFY">【摘要】</font><font FACE="楷体_GB2312" SIZE="3">加筋土挡土墙是由填土和填土中布置一定的筋带（或筋网）以及墙面板三部分组成，加筋土是一种复合体结构，在填料中埋至具有挠性的筋带材料，改良了土的力学特性。加筋土挡土墙与其它挡土墙相比，具有良好的经济效益和推广价值。</font><font
FACE="宋体" SIZE="3"></p>
<ol>
  <b>
  <li>挡土墙的使用场合</li>
  </b><p ALIGN="JUSTIFY">挡土墙是支撑路基填土或山坡土体，防止填土或土体变形失稳的构造物。按其结构特点，挡土墙可分为重力式、衡重式、加筋土轻形式以及混凝土半重力式等。而加筋土挡墙适用于石质土、砂性土、黄土地区修建较高的路肩墙。</p>
  <b>
  <li>加筋土挡墙的特点</li>
  </b><p ALIGN="JUSTIFY">加筋土由填土和填土中布置一定的筋带（或筋网）以及墙面板三部分组成。它是法国工程师亨利&middot;维达尔在1963年发明的，主要用于挡土墙一类的建筑物，在欧洲普及后，加拿大、日本、美国等相继引进，现已被世界上许多国家采用。</p>
  <p ALIGN="JUSTIFY">加筋土结构能得到迅速发展和应用是由于它具有以下特点：</p>
  <p ALIGN="JUSTIFY">1、组成加筋土的面板和筋带可以预先制作，在现场用机械（或人工）分层填筑。这种装配的方法，施工简捷、快速，并且节省劳力和缩短工期。</p>
  <p ALIGN="JUSTIFY">2、加筋土是柔性结构物，能够适应地基轻微变形。</p>
  <p ALIGN="JUSTIFY">3、加筋土挡土墙具有一定的柔性，抗振动性强，因此，也是一种很好的抗振结构物。</p>
  <p ALIGN="JUSTIFY">4、加筋土挡土墙节约占地，造型美观。加筋土挡土墙的墙面板可以垂直砌筑，可大量减少占地。</p>
  <p ALIGN="JUSTIFY">5、加筋土挡土墙造价比较低，加筋土挡土墙与钢筋混凝土挡土墙相比可减少造价的一半，与石砌重力式挡土墙比较，也可节约20%以上，同时加筋土挡土墙的造随墙高的增加而节省效果愈显著，因此它具有良好的经济效益。</p>
  <b>
  <li>方案比较</b></li>
</ol>
<p ALIGN="JUSTIFY">疏港路改造工程属旧路改建项目，是103国道京塘公路南段，该公路是连接天津市区与塘沽区及天津滨海新区的主要交通枢纽，也是历史上形成的天津地区主要干线，使该路的交通运输十分繁忙。为了确保行车速度，减少交通事故隐患，分别增设了高架桥、通道桥、人行天桥等构筑物，其中于庄子道桥3-13m的简支梁桥，两侧引道为加筋土挡土墙。</p>
<p ALIGN="JUSTIFY">1、设计加筋土挡土墙施工方案：</p>
<ol>
  <li>加筋土挡土墙采用矩形120cm</font><font FACE="Courier New" SIZE="3">×</font><font
    FACE="宋体" SIZE="3">60cm</font><font FACE="Courier New" SIZE="3">×</font><font
    FACE="宋体" SIZE="3">13cm。</li>
  <li>加筋土为高液限粘性土。</li>
  <li>筋带为聚丙烯土土带。</li>
</ol>
<p ALIGN="JUSTIFY">我项目接到施工图纸后，根据当前施工工期为雨季，如现场地质情况以及施工的难易程度，从工程造价、工程质量几方面进行分析，经过反复论证，最后与监理工程师一起确定如下方案。</p>
<p ALIGN="JUSTIFY">2、因挡土墙施工工期正处雨季，而粘土易受水影响，力学性能不稳定，施工难度大，因此我项目建议采用受水影响小，且稳定性和成型较好的粉煤灰石灰。</p>
<p ALIGN="JUSTIFY">3、为了确保距面板1.5m范围内填料的密实度和加筋体的排水功能，在距面板1.5m范围内填碎石屑，并用木夯击实。</p>
<p ALIGN="JUSTIFY">4、为了有效控制面板的平整速度，在不增加造价的情况下把拉杆由原设计的110cm改为900cm，改造后的方案施工证明，不仅降低了施工难度、工程成本，而且提高了工程质量。</p>
<ol>
  <b>
  <li>施工工艺及方法</b></li>
</ol>
<p ALIGN="JUSTIFY">1、加筋土挡土墙施工工艺流程图</p>
<p ALIGN="JUSTIFY">测量放样</p>
<p ALIGN="JUSTIFY">↓</p>
<p ALIGN="JUSTIFY">基坑开挖</p>
<p ALIGN="JUSTIFY">↓</p>
<p ALIGN="JUSTIFY">　</p>
<hr ALIGN="LEFT" WIDTH="21%" SIZE="1">
<p>回填碎石 基础检验</p>
<p ALIGN="JUSTIFY">↓</p>
<p ALIGN="JUSTIFY">立 模 板</p>
<p ALIGN="JUSTIFY">↓</p>
<p ALIGN="JUSTIFY">　</p>
<hr ALIGN="LEFT" WIDTH="16%" SIZE="1">
<p>浇筑挡墙基础及养生 检验混凝土平整度</p>
<p ALIGN="JUSTIFY">↓ </p>
<p ALIGN="JUSTIFY">拆 模 板 预制面板 测定面板平整度</p>
<p ALIGN="JUSTIFY">　</p>
<hr ALIGN="RIGHT" WIDTH="0%" SIZE="1">
<p>↓ ↓</p>
<p ALIGN="JUSTIFY">　</p>
<hr WIDTH="16%" SIZE="1">
<p>第一层面板施工 安装面板</p>
<p ALIGN="JUSTIFY">↓ ↓</p>
<p ALIGN="JUSTIFY">　</p>
<hr WIDTH="13%" SIZE="1">
<p>第二层及以上各层面板施工 摊铺填料</p>
<p ALIGN="JUSTIFY">↓ ↓</p>
<p ALIGN="JUSTIFY">顶层型板的施工 压实填料</p>
<p ALIGN="JUSTIFY">↓ ↓</p>
<p ALIGN="JUSTIFY">墙顶填料的平整压实 平整填料 测 定 含 水 量 </p>
<p ALIGN="JUSTIFY">↓</p>
<p ALIGN="JUSTIFY">铺设筋带</p>
<p ALIGN="JUSTIFY">↓ </p>
<p ALIGN="JUSTIFY">　</p>
<hr WIDTH="13%" SIZE="1">
<p>摊铺填料</p>
<p ALIGN="JUSTIFY">↓</p>
<p ALIGN="JUSTIFY">压实填料</font><font FACE="宋体" SIZE="1"></p>
<p ALIGN="JUSTIFY"></font><font FACE="宋体" SIZE="3">　</p>
<p ALIGN="JUSTIFY">筋土挡土墙施工工艺：</p>
<p ALIGN="JUSTIFY">（1）由测量人员根据设计，实地放线，确定加筋土挡土墙基础位置。</p>
<p ALIGN="JUSTIFY">（2）开挖基坑，排除地下水，并且做好防水工作。分层回填碎石垫层，充分压实平整，保证足够宽度，监理工程师认可后方可进行下道工序。</p>
<p ALIGN="JUSTIFY">（3）在碎石基础上支模板，浇筑砼基础，充分振捣，防止出现空洞，混凝土基础每15m设置伸缩缝或沉降缝，表面应平整，便于第一层面板的支立，待养生满足要求后，拆除模板。</p>
<p ALIGN="JUSTIFY">（4）第一层面板的施工：</p>
<p ALIGN="JUSTIFY">A、首先清除混凝土基础表面，准确划出面板边缘线，并拉线控制。面板与基础连接处用低强度砂浆调平，面板向内倾斜1/100～1/200作为填料压实时面板外倾的预留度。</p>
<p ALIGN="JUSTIFY">B、摊铺填料到面板预留拉环，由8吨压路机压实，在摊铺筋带前如拉筋带表面不能密贴，则用砂子摊平，保证筋带与填料表面密贴。</p>
<p ALIGN="JUSTIFY">C、在筋带上摊铺不小于20cm的填料后进行压实，后分层摊铺压实至面板顶部，方可进行第二层及以上各层的安装，摊铺，压实，铺带。</p>
<p ALIGN="JUSTIFY">（5）第二层及以上各层的施工</p>
<ol TYPE="A">
  <li>面板安装</li>
  <p ALIGN="JUSTIFY">面板安装要在下一层面板填料完成以后，才能进行。面板安装要挂线施工，保证墙面竖直，安装注意防止边角碰坏和插销孔及插销变形，禁止发生损坏的面板上墙。为防止相邻面板错位采用木螺栓或斜撑固定。控制相邻面板水平误差不大于10mm，轴线偏差每20m不大于10mm。</p>
  <li>填料的摊铺和压实</li>
  <p ALIGN="JUSTIFY">填料在碾压前要进行压实试验，填料时随时检查其含水量，保证其压实度达到要求。卸料作业要距面板1.5m～2.0m，填料时距面板1.0m以内先不予回填，只填筑1.0m范围以外的填料并将其压实，再铺筑筋带前，再回填预留部分，由于人工压实。填料摊铺要求厚度一致，表面平整，筋带上填料必须大于20cm，防止压实机具损坏筋带，更不允许在未铺料的筋带上行驶。压实采用轻型压实机具，且面板不小于1.0m，压实先由两边开始，方向垂直于筋带向中心逐渐靠拢，禁止急剧改变方向和急刹车。</p>
  <li>筋带的铺设和连接</li>
</ol>
<p ALIGN="JUSTIFY">在已经压实并整平的填料上承辐射状水平铺设，避免筋带在拉环上绕成死结并防止筋带的重叠。</p>
<p ALIGN="JUSTIFY">（6）、达到设计高程后安装C型面板，压实整平，修正整个墙顶填料面，为路面基层的铺筑做好准备。</p>
<p ALIGN="JUSTIFY">　</p>
<ol>
  <b>
  <li>稳定性验算</li>
</ol>
<ol>
  </b>
  <li>工程概况</li>
</ol>
<p ALIGN="JUSTIFY">1、于庄子通道桥桥台两侧加筋土挡墙，墙高H=5.85m，分坡长度为15m。</p>
<p ALIGN="JUSTIFY">2、路面宽度。</p>
<p ALIGN="JUSTIFY">3、荷载标准为汽-20级。</p>
<p ALIGN="JUSTIFY">4、墙后填土为粉煤灰r₁=11.47KN/m³ r₂=20KN/m³计算内磨擦角∮=25</p>
<p ALIGN="JUSTIFY">5、筋带采用聚丙烯土工带，带宽30mm，厚1.2m，容许拉应力为22.33MPa。</p>
<p ALIGN="JUSTIFY">6、粉煤灰与筋带之间的视磨擦系数f=0.4，加筋体与地基之间的磨擦系数f=0.35。</p>
<p ALIGN="JUSTIFY">7、地基为粘土，容许承载力=450Kpa</p>
<p ALIGN="JUSTIFY">8、面板采用120cm×60cm矩形混凝土面板，板厚为13cm，混凝土标号为25号。</p>
<blockquote>
  <p ALIGN="JUSTIFY">Sx=0.3 Sy=0.6</p>
  <p ALIGN="JUSTIFY">内部稳定计算：</p>
</blockquote>
<ol>
  <li>应力分析法</li>
</ol>
<p ALIGN="JUSTIFY">1、筋带受力计算</p>
<ol>
  <li>计算汽-20级重车荷载作用下等代土层厚度h_c。</li>
</ol>
<blockquote>
  <p ALIGN="JUSTIFY">由图可知H=5.65 b=0 a=0</p>
</blockquote>
<p ALIGN="JUSTIFY">(1)B₀的确定汽-20级中的重车为300KN，前后轴距L</font><font
SIZE="3">’</font><font FACE="宋体" SIZE="3">=1.4+4.0=5.4m.车轮接地长度a</font><font
SIZE="3">’</font><font FACE="宋体" SIZE="3">=0.2m</p>
<blockquote>
  <p ALIGN="JUSTIFY">因此，重车的扩散长度B₀为：</p>
  <p ALIGN="JUSTIFY">B₀</font><font SIZE="3">’</font><font FACE="宋体"
  SIZE="3">=L</font><font SIZE="3">’</font><font FACE="宋体" SIZE="3">+a</font><font
  SIZE="3">’</font><font FACE="宋体" SIZE="3">+Htg30°</p>
  <p ALIGN="JUSTIFY">=5.4+0.2=5.85tg30°</p>
  <p ALIGN="JUSTIFY">=5.4+0.2+3.38</p>
  <p ALIGN="JUSTIFY">=8.98(m)</p>
</blockquote>
<p ALIGN="JUSTIFY">由于加筋土挡墙分段长度15m＞8.98，故取B₀= B₀</font><font
SIZE="3">’</font><font FACE="宋体" SIZE="3">=8.98m</p>
<p ALIGN="JUSTIFY">(2)L₀的确定</p>
<p ALIGN="JUSTIFY">根据《加筋土工程设计规范》（JTJ015-91）规定，挡土墙在进行内部稳定性计算时，应首先判断活动区是否进入路面宽度，根据此情况决定L₀的限值车辆横向布置如图。</p>
<p ALIGN="JUSTIFY">由于0.3H=0.3</font><font FACE="Courier New" SIZE="3">×</font><font
FACE="宋体" SIZE="3">5.85=1.75 </p>
<p ALIGN="JUSTIFY">取L₀=12m</p>
<p ALIGN="JUSTIFY">（3）等到代土层厚度hc </p>
<p ALIGN="JUSTIFY">　</p>
<blockquote>
  <p ALIGN="JUSTIFY"></font><font FACE="宋体" SIZE="1">∑G </font><font FACE="宋体"
  SIZE="3"></p>
  <p ALIGN="JUSTIFY">计算</font><font FACE="宋体" SIZE="1">hc=棗棗?/P&gt; </font><font
  FACE="宋体" SIZE="3"></p>
  <p ALIGN="JUSTIFY"></font><font FACE="宋体" SIZE="1">B₀L₀r_1</p><p ALIGN="JUSTIFY">3</font><font FACE="Courier New" SIZE="1">×</font><font
  FACE="宋体" SIZE="1">300</p>
  </font><font FACE="宋体" SIZE="3"><p ALIGN="JUSTIFY"></font><font FACE="宋体" SIZE="1">=棗棗棗棗</font><font
  FACE="宋体" SIZE="3"> </p>
  <p ALIGN="JUSTIFY"></font><font FACE="宋体" SIZE="1">8.98</font><font FACE="Courier New"
  SIZE="1">×</font><font FACE="宋体" SIZE="1">12</font><font FACE="Courier New" SIZE="1">×</font><font
  FACE="宋体" SIZE="1">11.47</p>
  <p ALIGN="JUSTIFY">=0.73(m)</font></p>
</blockquote>
<p><font FACE="宋体" SIZE="3">　</p>
<p ALIGN="JUSTIFY">3、筋带所受拉力计算</p>
<p ALIGN="JUSTIFY">将等代均布土层h₁布置在路基全宽上，以2:1向下扩散。根据公式：</p>
<p ALIGN="JUSTIFY">T_I=T_hi+T_Fi+T_ci，</p>
<p ALIGN="JUSTIFY">计算的各层筋带所受拉力表：</p>
<p ALIGN="CENTER">　</p>
<blockquote>
  </font><font FACE="楷体_GB2312" SIZE="3"><p ALIGN="CENTER">筋带所受拉力表（垂直应力均匀分布法）</font></p>
</blockquote>
<table BORDER="1" CELLSPACING="1" CELLPADDING="7" WIDTH="483">
  <tr>
    <td WIDTH="7%" VALIGN="TOP" HEIGHT="23"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">加筋层号</font></td>
    <td WIDTH="7%" VALIGN="TOP" HEIGHT="23"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">H_1</p><p ALIGN="CENTER">(m)</font></td>
    <td WIDTH="12%" VALIGN="TOP" HEIGHT="23"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">K_I</font></td>
    <td WIDTH="9%" VALIGN="TOP" HEIGHT="23"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">B_i</p><p ALIGN="CENTER">(m)</font></td>
    <td WIDTH="10%" VALIGN="TOP" HEIGHT="23"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">B/B_1</p><p ALIGN="CENTER">(m)</font></td>
    <td WIDTH="7%" VALIGN="TOP" HEIGHT="23"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">R₁nF</p>
    <p ALIGN="CENTER">Kpa</font></td>
    <td WIDTH="7%" VALIGN="TOP" HEIGHT="23"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">R₂hc</p>
    <p ALIGN="CENTER">Kpa</font></td>
    <td WIDTH="10%" VALIGN="TOP" HEIGHT="23"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">R₁hc</p>
    <p ALIGN="CENTER">Kpa</font></td>
    <td WIDTH="10%" VALIGN="TOP" HEIGHT="23"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">б_ci</p><p ALIGN="CENTER">(Kpa)</font></td>
    <td WIDTH="10%" VALIGN="TOP" HEIGHT="23"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">SxSy</font></td>
    <td WIDTH="10%" VALIGN="TOP" HEIGHT="23"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">T_i</font></td>
  </tr>
  <tr>
    <td WIDTH="7%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">1</font></td>
    <td WIDTH="7%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">0.6</font></td>
    <td WIDTH="12%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">0.5599</font></td>
    <td WIDTH="9%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">25.6</font></td>
    <td WIDTH="10%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">0.977</font></td>
    <td WIDTH="7%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">0</font></td>
    <td WIDTH="7%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">20</font></td>
    <td WIDTH="10%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">8.37</font></td>
    <td WIDTH="10%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">4.685</font></td>
    <td WIDTH="10%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">0.18</font></td>
    <td WIDTH="10%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">1.538</font></td>
  </tr>
  <tr>
    <td WIDTH="7%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">2</font></td>
    <td WIDTH="7%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">1.2</font></td>
    <td WIDTH="12%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">0.5428</font></td>
    <td WIDTH="9%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">2602</font></td>
    <td WIDTH="10%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">0.954</font></td>
    <td WIDTH="7%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">0</font></td>
    <td WIDTH="7%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">20</font></td>
    <td WIDTH="10%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">8.37</font></td>
    <td WIDTH="10%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">4.545</font></td>
    <td WIDTH="10%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">0.18</font></td>
    <td WIDTH="10%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">2.163</font></td>
  </tr>
  <tr>
    <td WIDTH="7%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">3</font></td>
    <td WIDTH="7%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">1.8</font></td>
    <td WIDTH="12%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">0.5257</font></td>
    <td WIDTH="9%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">26.8</font></td>
    <td WIDTH="10%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">0.933</font></td>
    <td WIDTH="7%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">0</font></td>
    <td WIDTH="7%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">20</font></td>
    <td WIDTH="10%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">8.37</font></td>
    <td WIDTH="10%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">4.402</font></td>
    <td WIDTH="10%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">0.18</font></td>
    <td WIDTH="10%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">2.746</font></td>
  </tr>
  <tr>
    <td WIDTH="7%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">4</font></td>
    <td WIDTH="7%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">2.4</font></td>
    <td WIDTH="12%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">0.5086</font></td>
    <td WIDTH="9%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">27.4</font></td>
    <td WIDTH="10%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">0.912</font></td>
    <td WIDTH="7%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">0</font></td>
    <td WIDTH="7%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">20</font></td>
    <td WIDTH="10%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">8.37</font></td>
    <td WIDTH="10%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">4.259</font></td>
    <td WIDTH="10%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">0.18</font></td>
    <td WIDTH="10%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">3.287</font></td>
  </tr>
  <tr>
    <td WIDTH="7%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">5</font></td>
    <td WIDTH="7%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">3.0</font></td>
    <td WIDTH="12%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">0.4915</font></td>
    <td WIDTH="9%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">28</font></td>
    <td WIDTH="10%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">0.893</font></td>
    <td WIDTH="7%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">0</font></td>
    <td WIDTH="7%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">20</font></td>
    <td WIDTH="10%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">8.37</font></td>
    <td WIDTH="10%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">4.115</font></td>
    <td WIDTH="10%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">0.18</font></td>
    <td WIDTH="10%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">3.785</font></td>
  </tr>
  <tr>
    <td WIDTH="7%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">6</font></td>
    <td WIDTH="7%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">3.6</font></td>
    <td WIDTH="12%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">0.4744</font></td>
    <td WIDTH="9%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">28.6</font></td>
    <td WIDTH="10%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">0.874</font></td>
    <td WIDTH="7%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">0</font></td>
    <td WIDTH="7%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">20</font></td>
    <td WIDTH="10%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">8.37</font></td>
    <td WIDTH="10%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">3.972</font></td>
    <td WIDTH="10%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">0.18</font></td>
    <td WIDTH="10%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">4.232</font></td>
  </tr>
  <tr>
    <td WIDTH="7%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">7</font></td>
    <td WIDTH="7%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">4.2</font></td>
    <td WIDTH="12%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">0.4573</font></td>
    <td WIDTH="9%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">29.2</font></td>
    <td WIDTH="10%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">0.856</font></td>
    <td WIDTH="7%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">0</font></td>
    <td WIDTH="7%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">20</font></td>
    <td WIDTH="10%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">8.37</font></td>
    <td WIDTH="10%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">3.829</font></td>
    <td WIDTH="10%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">0.18</font></td>
    <td WIDTH="10%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">4.656</font></td>
  </tr>
  <tr>
    <td WIDTH="7%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">8</font></td>
    <td WIDTH="7%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">4.8</font></td>
    <td WIDTH="12%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">0.437</font></td>
    <td WIDTH="9%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">29.8</font></td>
    <td WIDTH="10%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">0.839</font></td>
    <td WIDTH="7%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">0</font></td>
    <td WIDTH="7%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">20</font></td>
    <td WIDTH="10%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">8.37</font></td>
    <td WIDTH="10%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">3.659</font></td>
    <td WIDTH="10%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">0.18</font></td>
    <td WIDTH="10%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">4.989</font></td>
  </tr>
  <tr>
    <td WIDTH="7%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">9</font></td>
    <td WIDTH="7%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">5.4</font></td>
    <td WIDTH="12%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">0.4231</font></td>
    <td WIDTH="9%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">30.4</font></td>
    <td WIDTH="10%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">0.822</font></td>
    <td WIDTH="7%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">0</font></td>
    <td WIDTH="7%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">20</font></td>
    <td WIDTH="10%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">8.37</font></td>
    <td WIDTH="10%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">3.543</font></td>
    <td WIDTH="10%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">0.18</font></td>
    <td WIDTH="10%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">5.355</font></td>
  </tr>
</table>
<p><font FACE="宋体" SIZE="3">　</p>
<p ALIGN="JUSTIFY">　</p>
<ol>
  <li>内部稳定计算</li>
</ol>
<ol>
  <li>筋带断面计算</li>
</ol>
<blockquote>
  <p ALIGN="JUSTIFY">T_i×10^3</p><p ALIGN="JUSTIFY">根据公式：A_i=</font><font SIZE="3">———————</font><font
  FACE="宋体" SIZE="3">计算并</p>
  <p ALIGN="JUSTIFY">η_i</p><p ALIGN="JUSTIFY">列于下表</p>
  <p ALIGN="CENTER">筋带断面计算表（垂直应力均匀分布法）</font></p>
</blockquote>
<table BORDER="1" CELLSPACING="1" CELLPADDING="7" WIDTH="497">
  <tr>
    <td WIDTH="10%" VALIGN="TOP"><font FACE="宋体" SIZE="3"><p ALIGN="CENTER">加筋层号</font></td>
    <td WIDTH="11%" VALIGN="TOP"><font FACE="宋体" SIZE="3"><p ALIGN="CENTER">拉力 T_i</p><p ALIGN="CENTER">(KN)</font></td>
    <td WIDTH="15%" VALIGN="TOP"><font FACE="宋体" SIZE="3"><p ALIGN="CENTER">断面面积A_i</p><p ALIGN="CENTER">(mm²)</font></td>
    <td WIDTH="14%" VALIGN="TOP"><font FACE="宋体" SIZE="3"><p ALIGN="CENTER">总宽度 b_i</p><p ALIGN="CENTER">(mm)</font></td>
    <td WIDTH="10%" VALIGN="TOP"><font FACE="宋体" SIZE="3"><p ALIGN="CENTER">加筋层号</font></td>
    <td WIDTH="11%" VALIGN="TOP"><font FACE="宋体" SIZE="3"><p ALIGN="CENTER">拉力T_i</font></td>
    <td WIDTH="14%" VALIGN="TOP"><font FACE="宋体" SIZE="3"><p ALIGN="CENTER">断面面积A_i</p><p ALIGN="CENTER">(mm²)</font></td>
    <td WIDTH="14%" VALIGN="TOP"><font FACE="宋体" SIZE="3"><p ALIGN="CENTER">总宽度</p>
    <p ALIGN="CENTER">b_i</p><p ALIGN="CENTER">(mm)</font></td>
  </tr>
  <tr>
    <td WIDTH="10%" VALIGN="TOP"><font FACE="宋体" SIZE="3"><p ALIGN="CENTER">1</font></td>
    <td WIDTH="11%" VALIGN="TOP"><font FACE="宋体" SIZE="3"><p ALIGN="CENTER">1.583</font></td>
    <td WIDTH="15%" VALIGN="TOP"><font FACE="宋体" SIZE="3"><p ALIGN="CENTER">68.90</font></td>
    <td WIDTH="14%" VALIGN="TOP"><font FACE="宋体" SIZE="3"><p ALIGN="CENTER">68.1</font></td>
    <td WIDTH="10%" VALIGN="TOP"><font FACE="宋体" SIZE="3"><p ALIGN="CENTER">6</font></td>
    <td WIDTH="11%" VALIGN="TOP"><font FACE="宋体" SIZE="3"><p ALIGN="CENTER">4.232</font></td>
    <td WIDTH="14%" VALIGN="TOP"><font FACE="宋体" SIZE="3"><p ALIGN="CENTER">189.5</font></td>
    <td WIDTH="14%" VALIGN="TOP"><font FACE="宋体" SIZE="3"><p ALIGN="CENTER">189.5</font></td>
  </tr>
  <tr>
    <td WIDTH="10%" VALIGN="TOP"><font FACE="宋体" SIZE="3"><p ALIGN="CENTER">2</font></td>
    <td WIDTH="11%" VALIGN="TOP"><font FACE="宋体" SIZE="3"><p ALIGN="CENTER">2.163</font></td>
    <td WIDTH="15%" VALIGN="TOP"><font FACE="宋体" SIZE="3"><p ALIGN="CENTER">96.9</font></td>
    <td WIDTH="14%" VALIGN="TOP"><font FACE="宋体" SIZE="3"><p ALIGN="CENTER">96.9</font></td>
    <td WIDTH="10%" VALIGN="TOP"><font FACE="宋体" SIZE="3"><p ALIGN="CENTER">7</font></td>
    <td WIDTH="11%" VALIGN="TOP"><font FACE="宋体" SIZE="3"><p ALIGN="CENTER">4.656</font></td>
    <td WIDTH="14%" VALIGN="TOP"><font FACE="宋体" SIZE="3"><p ALIGN="CENTER">208.5</font></td>
    <td WIDTH="14%" VALIGN="TOP"><font FACE="宋体" SIZE="3"><p ALIGN="CENTER">208.5</font></td>
  </tr>
  <tr>
    <td WIDTH="10%" VALIGN="TOP"><font FACE="宋体" SIZE="3"><p ALIGN="CENTER">3</font></td>
    <td WIDTH="11%" VALIGN="TOP"><font FACE="宋体" SIZE="3"><p ALIGN="CENTER">2.746</font></td>
    <td WIDTH="15%" VALIGN="TOP"><font FACE="宋体" SIZE="3"><p ALIGN="CENTER">123</font></td>
    <td WIDTH="14%" VALIGN="TOP"><font FACE="宋体" SIZE="3"><p ALIGN="CENTER">123</font></td>
    <td WIDTH="10%" VALIGN="TOP"><font FACE="宋体" SIZE="3"><p ALIGN="CENTER">8</font></td>
    <td WIDTH="11%" VALIGN="TOP"><font FACE="宋体" SIZE="3"><p ALIGN="CENTER">4.989</font></td>
    <td WIDTH="14%" VALIGN="TOP"><font FACE="宋体" SIZE="3"><p ALIGN="CENTER">223.4</font></td>
    <td WIDTH="14%" VALIGN="TOP"><font FACE="宋体" SIZE="3"><p ALIGN="CENTER">223.4</font></td>
  </tr>
  <tr>
    <td WIDTH="10%" VALIGN="TOP"><font FACE="宋体" SIZE="3"><p ALIGN="CENTER">4</font></td>
    <td WIDTH="11%" VALIGN="TOP"><font FACE="宋体" SIZE="3"><p ALIGN="CENTER">3.287</font></td>
    <td WIDTH="15%" VALIGN="TOP"><font FACE="宋体" SIZE="3"><p ALIGN="CENTER">147.2</font></td>
    <td WIDTH="14%" VALIGN="TOP"><font FACE="宋体" SIZE="3"><p ALIGN="CENTER">147.2</font></td>
    <td WIDTH="10%" VALIGN="TOP"><font FACE="宋体" SIZE="3"><p ALIGN="CENTER">9</font></td>
    <td WIDTH="11%" VALIGN="TOP"><font FACE="宋体" SIZE="3"><p ALIGN="CENTER">5.355</font></td>
    <td WIDTH="14%" VALIGN="TOP"><font FACE="宋体" SIZE="3"><p ALIGN="CENTER">239.8</font></td>
    <td WIDTH="14%" VALIGN="TOP"><font FACE="宋体" SIZE="3"><p ALIGN="CENTER">239.8</font></td>
  </tr>
  <tr>
    <td WIDTH="10%" VALIGN="TOP"><font FACE="宋体" SIZE="3"><p ALIGN="CENTER">5</font></td>
    <td WIDTH="11%" VALIGN="TOP"><font FACE="宋体" SIZE="3"><p ALIGN="CENTER">3.785</font></td>
    <td WIDTH="15%" VALIGN="TOP"><font FACE="宋体" SIZE="3"><p ALIGN="CENTER">169.5</font></td>
    <td WIDTH="14%" VALIGN="TOP"><font FACE="宋体" SIZE="3"><p ALIGN="CENTER">169.5</font></td>
    <td WIDTH="10%" VALIGN="TOP">　</td>
    <td WIDTH="11%" VALIGN="TOP">　</td>
    <td WIDTH="14%" VALIGN="TOP">　</td>
    <td WIDTH="14%" VALIGN="TOP">　</td>
  </tr>
</table>
<blockquote>
  <font FACE="宋体" SIZE="3"><p ALIGN="JUSTIFY">2)筋带长度验算</p>
  <p ALIGN="JUSTIFY">根据初步拟定的筋带长度，</p>
  <p ALIGN="JUSTIFY">s_i</p><p ALIGN="JUSTIFY">按公式K_f=棗 验算的各层的抗拔</p>
  <p ALIGN="JUSTIFY">T_I</p>
</blockquote>
<p ALIGN="JUSTIFY">稳定系数列于下表：</p>
<blockquote>
  </font><font FACE="楷体_GB2312" SIZE="3"><p ALIGN="CENTER">抗拔稳定系数（垂直应力均匀分布法）</p>
  </font>
</blockquote>
<p ALIGN="center">　</p>
<div align="center"><center>
<table BORDER="1" CELLSPACING="1" CELLPADDING="7" WIDTH="496">
  <tr>
    <td WIDTH="9%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">筋带层号</font></td>
    <td WIDTH="7%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">h_I</p><p ALIGN="CENTER">(m)</font></td>
    <td WIDTH="10%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">T_i</p><p ALIGN="CENTER">(KN)</font></td>
    <td WIDTH="8%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">L_i</p><p ALIGN="CENTER">(m)</font></td>
    <td WIDTH="10%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">L_oi</p><p ALIGN="CENTER">(m)</font></td>
    <td WIDTH="10%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">L_ei</p><p ALIGN="CENTER">(m)</font></td>
    <td WIDTH="13%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">b_I</p><p ALIGN="CENTER">(m)</font></td>
    <td WIDTH="14%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">r₁h_i</p><p ALIGN="CENTER">(KPa)</font></td>
    <td WIDTH="10%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">r₂h_F</p><p ALIGN="CENTER">(KPa)</font></td>
    <td WIDTH="9%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">K_f</font></td>
  </tr>
  <tr>
    <td WIDTH="9%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">1</font></td>
    <td WIDTH="7%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">0.6</font></td>
    <td WIDTH="10%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">1.538</font></td>
    <td WIDTH="8%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">4.00</font></td>
    <td WIDTH="10%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">1.47</font></td>
    <td WIDTH="10%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">2.53</font></td>
    <td WIDTH="13%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">0.0681</font></td>
    <td WIDTH="14%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">6.882</font></td>
    <td WIDTH="10%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">0</font></td>
    <td WIDTH="9%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">0.62</font></td>
  </tr>
  <tr>
    <td WIDTH="9%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">2</font></td>
    <td WIDTH="7%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">1.2</font></td>
    <td WIDTH="10%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">2.163</font></td>
    <td WIDTH="8%" VALIGN="TOP">　</td>
    <td WIDTH="10%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">1.302</font></td>
    <td WIDTH="10%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">2.698</font></td>
    <td WIDTH="13%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">0.0969</font></td>
    <td WIDTH="14%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">13.764</font></td>
    <td WIDTH="10%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">0</font></td>
    <td WIDTH="9%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">1.33</font></td>
  </tr>
  <tr>
    <td WIDTH="9%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">3</font></td>
    <td WIDTH="7%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">1.8</font></td>
    <td WIDTH="10%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">2.746</font></td>
    <td WIDTH="8%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">4.00</font></td>
    <td WIDTH="10%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">1.134</font></td>
    <td WIDTH="10%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">2.866</font></td>
    <td WIDTH="13%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">0.123</font></td>
    <td WIDTH="14%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">20.646</font></td>
    <td WIDTH="10%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">0</font></td>
    <td WIDTH="9%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">2.12</font></td>
  </tr>
  <tr>
    <td WIDTH="9%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">4</font></td>
    <td WIDTH="7%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">2.4</font></td>
    <td WIDTH="10%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">3.287</font></td>
    <td WIDTH="8%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">4.00</font></td>
    <td WIDTH="10%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">0.966</font></td>
    <td WIDTH="10%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">3.034</font></td>
    <td WIDTH="13%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">0.1472</font></td>
    <td WIDTH="14%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">27.528</font></td>
    <td WIDTH="10%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">0</font></td>
    <td WIDTH="9%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">2.99</font></td>
  </tr>
  <tr>
    <td WIDTH="9%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">5</font></td>
    <td WIDTH="7%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">3.0</font></td>
    <td WIDTH="10%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">3.785</font></td>
    <td WIDTH="8%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">4.00</font></td>
    <td WIDTH="10%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">0.798</font></td>
    <td WIDTH="10%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">3.202</font></td>
    <td WIDTH="13%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">0.1695</font></td>
    <td WIDTH="14%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">34.41</font></td>
    <td WIDTH="10%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">0</font></td>
    <td WIDTH="9%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">3.74</font></td>
  </tr>
  <tr>
    <td WIDTH="9%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">6</font></td>
    <td WIDTH="7%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">3.6</font></td>
    <td WIDTH="10%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">4.232</font></td>
    <td WIDTH="8%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">4.00</font></td>
    <td WIDTH="10%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">0.63</font></td>
    <td WIDTH="10%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">3.37</font></td>
    <td WIDTH="13%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">0.1895</font></td>
    <td WIDTH="14%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">41.292</font></td>
    <td WIDTH="10%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">0</font></td>
    <td WIDTH="9%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">4.98</font></td>
  </tr>
  <tr>
    <td WIDTH="9%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">7</font></td>
    <td WIDTH="7%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">4.2</font></td>
    <td WIDTH="10%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">4.656</font></td>
    <td WIDTH="8%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">4.00</font></td>
    <td WIDTH="10%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">0.462</font></td>
    <td WIDTH="10%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">3.538</font></td>
    <td WIDTH="13%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">0.2085</font></td>
    <td WIDTH="14%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">48.174</font></td>
    <td WIDTH="10%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">0</font></td>
    <td WIDTH="9%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">6.11</font></td>
  </tr>
  <tr>
    <td WIDTH="9%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">8</font></td>
    <td WIDTH="7%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">4.8</font></td>
    <td WIDTH="10%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">4.989</font></td>
    <td WIDTH="8%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">4.00</font></td>
    <td WIDTH="10%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">0.294</font></td>
    <td WIDTH="10%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">3.696</font></td>
    <td WIDTH="13%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">0.2234</font></td>
    <td WIDTH="14%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">54.72</font></td>
    <td WIDTH="10%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">0</font></td>
    <td WIDTH="9%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">7.17</font></td>
  </tr>
  <tr>
    <td WIDTH="9%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">9</font></td>
    <td WIDTH="7%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">5.4</font></td>
    <td WIDTH="10%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">5.355</font></td>
    <td WIDTH="8%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">4.00</font></td>
    <td WIDTH="10%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">0.126</font></td>
    <td WIDTH="10%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">3.874</font></td>
    <td WIDTH="13%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">0.2398</font></td>
    <td WIDTH="14%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">61.938</font></td>
    <td WIDTH="10%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">0</font></td>
    <td WIDTH="9%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">8.55</font></td>
  </tr>
</table>
</center></div>
<p><font FACE="宋体" SIZE="3">　</p>
<p ALIGN="JUSTIFY">　</p>
<p ALIGN="JUSTIFY">由上表可知除第1、2层筋带抗拔稳定系数K_f=0.62＜[K_f]</p>
<p ALIGN="JUSTIFY">K_f=1.33＜[K_f] (=0.2)外，其余各层的K_f均大于2.0，为此，采用K_f=2.0仅求第1、2层筋带所需总宽度b₁、b_{2</p>
<blockquote>}<p ALIGN="JUSTIFY"></font><font FACE="宋体" SIZE="1">T_i K_{f </p>}<p ALIGN="JUSTIFY">b₁= 棗棗棗 </p>
  <p ALIGN="JUSTIFY">2r₁h_iz^xL_{ei </p>}<p ALIGN="JUSTIFY">1.538</font><font FACE="Courier New" SIZE="1">×</font><font
  FACE="宋体" SIZE="1">0.62</p>
  <p ALIGN="JUSTIFY">=棗棗棗棗?/P&gt; </p>
  <p ALIGN="JUSTIFY">2</font><font FACE="Courier New" SIZE="1">×</font><font FACE="宋体"
  SIZE="1">6.882</font><font FACE="Courier New" SIZE="1">×</font><font FACE="宋体"
  SIZE="1">0.4</font><font FACE="Courier New" SIZE="1">×</font><font FACE="宋体" SIZE="1">2.53</p>
</blockquote>
<p ALIGN="JUSTIFY">=0.119</p>
<blockquote>
  <p ALIGN="JUSTIFY">T₂ K_{f </p>}<p ALIGN="JUSTIFY">b₂=棗棗棗</p>
  <p ALIGN="JUSTIFY">2r₁h_if^xL_{ei </p>}<p ALIGN="JUSTIFY">2.163</p>
  <p ALIGN="JUSTIFY">=棗棗棗棗棗</p>
  <p ALIGN="JUSTIFY">2</font><font FACE="Courier New" SIZE="1">×</font><font FACE="宋体"
  SIZE="1">13.764</font><font FACE="Courier New" SIZE="1">×</font><font FACE="宋体"
  SIZE="1">0.4</font><font FACE="Courier New" SIZE="1">×</font><font FACE="宋体" SIZE="1">2.698</p>
</blockquote>
<p ALIGN="JUSTIFY">=0.14(m)</p>
<ol>
  </font><font FACE="宋体" SIZE="3">
  <li>设计采用值</li>
</ol>
<p ALIGN="JUSTIFY">聚丙烯土工带的用量应以偶数的根据数表示，因此，需将计算筋带数量进行适当调整，从而确定设计采用量，根据采用的筋带数量计算抗拉强度安全系数Ks和抗拔稳定系数K_f值，结果列表1-5</p>
<p ALIGN="CENTER"></font>　</p>
<p ALIGN="LEFT">　</p>
<table BORDER="1" CELLSPACING="1" CELLPADDING="5" WIDTH="483">
  <tr>
    <td WIDTH="7%" VALIGN="TOP" ROWSPAN="2" HEIGHT="20"><font FACE="宋体" SIZE="1"><hr
    WIDTH="7%" SIZE="1">
    <p ALIGN="CENTER">序号</font></td>
    <td WIDTH="13%" VALIGN="TOP" ROWSPAN="2" HEIGHT="20"><font FACE="宋体" SIZE="1"><p
    ALIGN="CENTER">筋带计算宽度</p>
    <p ALIGN="CENTER">（m）</font></td>
    <td WIDTH="29%" VALIGN="TOP" COLSPAN="2" HEIGHT="20"><font FACE="宋体" SIZE="1"><p
    ALIGN="CENTER">筋带数量</font></td>
    <td WIDTH="12%" VALIGN="TOP" ROWSPAN="2" HEIGHT="20"><font FACE="宋体" SIZE="1"><p
    ALIGN="CENTER">筋带总宽度b_I</p><p ALIGN="CENTER">(m)</font></td>
    <td WIDTH="19%" VALIGN="TOP" ROWSPAN="2" HEIGHT="20"><font FACE="宋体" SIZE="1"><p
    ALIGN="JUSTIFY">采用的Ks</p>
    <p ALIGN="JUSTIFY">A_I</p><p ALIGN="JUSTIFY">Ks=</p>
    <p ALIGN="JUSTIFY">T_i×10</font></td>
    <td WIDTH="20%" VALIGN="TOP" ROWSPAN="2" HEIGHT="20"><font FACE="宋体" SIZE="1"><p
    ALIGN="CENTER">采用的</p>
    <p ALIGN="CENTER">K_f</font></td>
  </tr>
  <tr>
    <td WIDTH="14%" VALIGN="TOP" HEIGHT="20"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">计算数量</p>
    <p ALIGN="CENTER">（m）</font></td>
    <td WIDTH="14%" VALIGN="TOP" HEIGHT="20"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">采用数量</p>
    <p ALIGN="CENTER">(根)</font></td>
  </tr>
  <tr>
    <td WIDTH="7%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">1</font></td>
    <td WIDTH="13%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="JUSTIFY">0.172</font></td>
    <td WIDTH="14%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">5.2</font></td>
    <td WIDTH="14%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">4</font></td>
    <td WIDTH="12%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">0.18</font></td>
    <td WIDTH="19%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">1.35</font></td>
    <td WIDTH="20%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">2.02</font></td>
  </tr>
  <tr>
    <td WIDTH="7%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">2</font></td>
    <td WIDTH="13%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="JUSTIFY">0.14</font></td>
    <td WIDTH="14%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">4.6</font></td>
    <td WIDTH="14%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">4</font></td>
    <td WIDTH="12%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">0.12</font></td>
    <td WIDTH="19%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">1.16</font></td>
    <td WIDTH="20%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">2.01</font></td>
  </tr>
  <tr>
    <td WIDTH="7%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">3</font></td>
    <td WIDTH="13%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="JUSTIFY">0.123</font></td>
    <td WIDTH="14%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">4.1</font></td>
    <td WIDTH="14%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">4</font></td>
    <td WIDTH="12%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">0.12</font></td>
    <td WIDTH="19%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">1.29</font></td>
    <td WIDTH="20%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">2.06</font></td>
  </tr>
  <tr>
    <td WIDTH="7%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">4</font></td>
    <td WIDTH="13%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="JUSTIFY">0.147</font></td>
    <td WIDTH="14%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">4.9</font></td>
    <td WIDTH="14%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">4</font></td>
    <td WIDTH="12%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">0.12</font></td>
    <td WIDTH="19%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">1.31</font></td>
    <td WIDTH="20%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">2.43</font></td>
  </tr>
  <tr>
    <td WIDTH="7%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">5</font></td>
    <td WIDTH="13%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="JUSTIFY">0.169</font></td>
    <td WIDTH="14%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">5.6</font></td>
    <td WIDTH="14%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">6</font></td>
    <td WIDTH="12%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">0.18</font></td>
    <td WIDTH="19%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">1.40</font></td>
    <td WIDTH="20%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">4.19</font></td>
  </tr>
  <tr>
    <td WIDTH="7%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">6</font></td>
    <td WIDTH="13%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="JUSTIFY">0.189</font></td>
    <td WIDTH="14%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">6.3</font></td>
    <td WIDTH="14%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">6</font></td>
    <td WIDTH="12%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">0.18</font></td>
    <td WIDTH="19%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">1.19</font></td>
    <td WIDTH="20%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">4.73</font></td>
  </tr>
  <tr>
    <td WIDTH="7%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">7</font></td>
    <td WIDTH="13%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="JUSTIFY">0.209</font></td>
    <td WIDTH="14%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">6.9</font></td>
    <td WIDTH="14%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">6</font></td>
    <td WIDTH="12%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">0.18</font></td>
    <td WIDTH="19%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">1.21</font></td>
    <td WIDTH="20%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">5.27</font></td>
  </tr>
  <tr>
    <td WIDTH="7%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">8</font></td>
    <td WIDTH="13%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="JUSTIFY">0.223</font></td>
    <td WIDTH="14%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">7.4</font></td>
    <td WIDTH="14%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">8</font></td>
    <td WIDTH="12%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">0.24</font></td>
    <td WIDTH="19%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">1.21</font></td>
    <td WIDTH="20%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">7.78</font></td>
  </tr>
  <tr>
    <td WIDTH="7%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">9</font></td>
    <td WIDTH="13%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="JUSTIFY">0.239</font></td>
    <td WIDTH="14%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">7.9</font></td>
    <td WIDTH="14%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">8</font></td>
    <td WIDTH="12%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">0.24</font></td>
    <td WIDTH="19%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">1.23</font></td>
    <td WIDTH="20%" VALIGN="TOP"><font FACE="宋体" SIZE="1"><p ALIGN="CENTER">8.60</font></td>
  </tr>
</table>
<p><font FACE="宋体" SIZE="3">　</p>
<p ALIGN="JUSTIFY">　</p>
<ol START="3">
  <li>外部稳定计算</li>
</ol>
<ol>
  <li>滑移稳定性</li>
</ol>
<p ALIGN="JUSTIFY">等代土层hc布置于墙体后缘起的路基范围内，由图可知，作用于墙体的土压力是E</font><font
FACE="宋体" SIZE="1"> </p>
<blockquote>
  <p ALIGN="JUSTIFY">tgθ=-tg2∮±(ctg∮+tg2∮)tg2∮</p>
</blockquote>
<p ALIGN="JUSTIFY">=-tg50±(ctg25+tg50)tg50</p>
<p ALIGN="JUSTIFY">=-1.19±10.2</p>
<blockquote>
  <p ALIGN="JUSTIFY">=0.993</p>
</blockquote>
<p ALIGN="JUSTIFY">θ=44.79°</p>
<p ALIGN="JUSTIFY">cos(θ+∮) </p>
<p ALIGN="JUSTIFY">Ka=棗棗棗棗tgθ </p>
<p ALIGN="JUSTIFY">Sin(θ+2∮) </p>
<p ALIGN="JUSTIFY">cos(44.79+25)</p>
<p ALIGN="JUSTIFY">=棗棗棗梩g44.79</p>
<p ALIGN="JUSTIFY">sin(44.79+50)</p>
<p ALIGN="JUSTIFY">=0.344</p>
<p ALIGN="JUSTIFY">E=1/2rH(H+2h_c)Ka</p>
<p ALIGN="JUSTIFY">=1/2</font><font FACE="Courier New" SIZE="1">×</font><font
FACE="宋体" SIZE="1">11.47</font><font FACE="Courier New" SIZE="1">×</font><font
FACE="宋体" SIZE="1">5.85(5.85+2</font><font FACE="Courier New" SIZE="1">×</font><font
FACE="宋体" SIZE="1">0.73)</font><font FACE="Courier New" SIZE="1">×</font><font
FACE="宋体" SIZE="1">0.366</p>
<p ALIGN="JUSTIFY">=89.76(KN)</p>
<p ALIGN="JUSTIFY">∴Ex=89.76</font><font FACE="Courier New" SIZE="1">×</font><font
FACE="宋体" SIZE="1">cos25=81.35(KN)</p>
<p ALIGN="JUSTIFY">Ey=89.76</font><font FACE="Courier New" SIZE="1">×</font><font
FACE="宋体" SIZE="1">sin25=37.93(KN)</p>
<p ALIGN="JUSTIFY">墙体填土重力</p>
<p ALIGN="JUSTIFY">W₁=4.00×58511.47=268.4(KN)</p>
<p ALIGN="JUSTIFY">W₂=20×4.4×11.47=101Kg(KN)</p>
<p ALIGN="JUSTIFY">ΣT=Ex=81.35(KN)</p>
<p ALIGN="JUSTIFY">ΣN=268.4+101+37.93=407.33(KN)</p>
<p ALIGN="JUSTIFY">fΣN 0.35×407.33</p>
<p ALIGN="JUSTIFY">Kc= 棗?= 棗棗棗棗=1.75＞1.3</p>
<p ALIGN="JUSTIFY">ΣT 81.35</font><font FACE="宋体" SIZE="3"></p>
<p ALIGN="JUSTIFY">(二)倾覆稳定性</p>
<p ALIGN="JUSTIFY">1、求各力对墙0点的力矩</p>
<blockquote>
  </font><font FACE="宋体" SIZE="1"><p ALIGN="JUSTIFY">M₁=W₁</font><font
  FACE="Courier New" SIZE="1">×</font><font FACE="宋体" SIZE="1">2W₁=268.4</font><font
  FACE="Courier New" SIZE="1">×</font><font FACE="宋体" SIZE="1">20=536.8(KN.m)</p>
  <p ALIGN="JUSTIFY">M₂=W₂</font><font FACE="Courier New" SIZE="1">×</font><font
  FACE="宋体" SIZE="1">2W₂=101</font><font FACE="Courier New" SIZE="1">×</font><font
  FACE="宋体" SIZE="1">×5.0=505(KN.m)</p>
  <p ALIGN="JUSTIFY">MEy=Ey</font><font FACE="Courier New" SIZE="1">×</font><font
  FACE="宋体" SIZE="1">2WEy=37.93</font><font FACE="Courier New" SIZE="1">×</font><font
  FACE="宋体" SIZE="1">6=227.6(KN.m)</p>
  <p ALIGN="JUSTIFY">MEx=Ey</font><font FACE="Courier New" SIZE="1">×</font><font
  FACE="宋体" SIZE="1">2WEy=81.35</font><font FACE="Courier New" SIZE="1">×</font><font
  FACE="宋体" SIZE="1">2.93=238.4(KN.m</p>
  <p ALIGN="JUSTIFY">ΣMy 536.8+505+227.6</p>
  <hr ALIGN="LEFT" WIDTH="0%" SIZE="1">
  <p>K_o=棗=棗棗棗棗=5.32＞1.5</p>
</blockquote>
<p ALIGN="JUSTIFY">ΣM_o 238.7</font><font FACE="宋体" SIZE="3"></p>
<p ALIGN="JUSTIFY">(三)基础底面地基承载力验算</p>
<p ALIGN="JUSTIFY">　</p>
<p ALIGN="JUSTIFY">L L </font><font FACE="宋体" SIZE="1">W₁2W₁+W2W₂+Ey2Ey-Ex2Ex</p>
<p ALIGN="JUSTIFY">　</p>
<hr ALIGN="LEFT" WIDTH="0%" SIZE="1">
<p>e=?-2dw = ?- 棗棗棗棗?/P&gt; </p>
<p ALIGN="JUSTIFY">2 2 W₁+W₂+Wy</p>
<p ALIGN="JUSTIFY">6 536.8+5.5+227.6-238.4</p>
<p ALIGN="JUSTIFY">=?- </font><font SIZE="1">————————————————————</font><font
FACE="宋体" SIZE="1"></p>
<p ALIGN="JUSTIFY">2 268.4+101+37.93</p>
<p ALIGN="JUSTIFY">L</p>
<p ALIGN="JUSTIFY">=3-2.55=0.45m＜?（=1m）</p>
<p ALIGN="JUSTIFY">6</p>
<p ALIGN="JUSTIFY">ΣN 6e</p>
<p ALIGN="JUSTIFY">б_max= 棗?1+ 棗)</p>
<p ALIGN="JUSTIFY">L L</p>
<p ALIGN="JUSTIFY">4.73 6×0.45</p>
<p ALIGN="JUSTIFY">= 棗?1+ 棗棗?)</p>
<p ALIGN="JUSTIFY">6 6</p>
<p ALIGN="JUSTIFY">=98＜ (=450KPa)</font><font FACE="宋体" SIZE="3"></p>
<p ALIGN="JUSTIFY">(四)整体滑动稳定</p>
<p ALIGN="JUSTIFY">由于墙前地形平坦，地基承载力较高，因此整体滑动可不作验算。</font></p>
<hr color="#FF0000">

chengong

怎么会这样，能发个文档附件吗？先谢了！

hejiangliang

有乱码想象,楼主请做成压缩文件好吗?以便于下载浏览,节省论坛空间资源.谢谢了

zchlb

加筋挡土墙到底有没有质量保证？

lsq741201

有乱码，能做个附件吗？？？？？？

小荷流水

没办法看，乱码而且又没有图，唉。。。虽然是好文章。