[求助]：有人知道california bearing ratio的含义吗?

richardxdcad

本人最近阅读一份英国规范的地质报告，它把california bearing ratio当作一个最重要的指标，其地位有点类似于我们的地基承载力特征值。有哪位高手知道它的含意吗？

niohuru

California Bearing Ratio Test
The California Bearing Ratio (CBR) test was developed by the California Division of Highways as method of classifying soils for suitability for use in highway construction for the classification of base course materials for the support of flexible pavements.
Actually the CBR is a measure of shearing resistance of the soil under controlled density and moisture conditions, therefore the test cannot be considered as a classification test since the results are not constant for a given soil but depend on such as density and the moisture content as well as size and shape of grains. It has been found that certain soils are very sensitive to such variables as slight changes in molding moisture, compactive effort and soaking of the specimen.
The CBR value is obtained by getting the percentage of the unit load required to force a piston to penetrate 0.10 inch into the molded soil to the value of 1000 pounds per square inch which is required to effect the same depth into a standard crushed rock.
The CBR test can be made in the laboratory on undisturbed or compacted samples.

加州支承率(?)是由加州高速公路部研发的一种在高速公路的建造中区分土的稳定性与解决柔性人行道的基础材质问题的方法???

richardxdcad

不是支承，是承压

niohuru

最初由 richardxdcad 发布
[B]不是支承，是承压 [/B]

谢谢前辈指正
不知道"flexible pavements"到底是个什么东西
在下不是学路桥的出身