红层旁压试验、载荷试验与单轴抗压试验对比研究  

Comparative Study on PMT and Loading Test and Uniaxial Compressive Test of Red Layer

作　　者：彭柏兴 金飞 Peng Baixing;Jin Fei(Changsha Urban Planning,Investigation & Design,Institute,Changsha 410007,China;Wharf (Changsha) Real Estate Co.,Ltd,Changsha 410002,China)

机构地区：[1]长沙市规划勘测设计研究院,湖南长沙410007 [2]九龙仓(长沙)置业有限公司,湖南长沙410002

出　　处：《城市勘测》2019年第5期174-179,194,共7页Urban Geotechnical Investigation & Surveying

基　　金：住房和城乡建设部软科学研究项目(2012-R2-28)

摘　　要：基于长沙国际金融中心的载荷试验(d=1130mm)、旁压试验和天然单轴抗压试验数据对比分析,获得了中风化泥质粉质岩的比例界限压力p、变形模量E0与垂直基床系数KV、临塑压力Pf、旁压模量EM、似弹性模量E、旁压剪切模量GM及水平基床系数KX等系列参数,并对它们之间的关系进行了对比分析,提出了软岩承载力的试验取值原则,对同类软岩的承载力取值具有参考意义。Through comparison of case history data of moderate weathered argillaceous siltstone between pressuremeter test (PMT)、loading test with the diameter of 1130mm and uniaxial compressive test from Changsha International Finance Center Building site,a series of parameter values such as P、E0、KV、Pf、EM、E、GM、KX had been obtained. The relation of those parameters had been compared and analyzed. In addition,the principles of determining the characteristic value of bearing capacity of this rock was put forward,which is deserved to be applied to practical problems such as those rocks.

关 键 词：载荷试验 旁压试验 单轴抗压试验 变形模量 基床系数 红层 

分 类 号：TU45[建筑科学—岩土工程]