摘要
基于文克尔弹性地基模型理论,介绍了基床系数的概念以及三轴测试方法和原理。通过对西安某工程饱和黄土测试结果分析,对比载荷试验结果,建议三轴测定饱和黄土基床系数采用的控制比值,针对不同的曲线类型,提供了停止试验条件的选取方法。另外,分析了液性指数I_L对基床系数的影响,给出了关系曲线。提出了室内测定基床系数目前存在的主要问题,建议了有关课题的研究方向。
Based on the Winkler elastic foundation theory, the concept of the coefficient of subgrade reaction is introduced and the methods for the triaxial test are summarized. By analyzing the results from the saturated loess in Xi＇an and contrasting the results from loading tests, the control ratio for the test to get the coefficient of the subgrade reaction of saturated loess by triaxial apparatus is suggested, The selection process for the end shear strain is given according to the different types of curves, and the influence of relative water content IL to the coefficient is analyzed. The main problems existed in the testing are proposed and the related research topic is suggested.
出处
《工程勘察》
CSCD
北大核心
2008年第3期10-13,共4页
Geotechnical Investigation & Surveying
关键词
基床系数
三轴试验
饱和黄土
coefficient of subgrade reaction
triaxial test
saturated loess
