往返荷载下粘性土的强度及取值标准试验研究  

Experiment study on shear strength and yield criterion of cohesive soils under repeated loads

作　　者：廖红建[1] 宋丽[1] 杨政[1] 外崎明 赤石胜[3] 

机构地区：[1]西安交通大学土木工程系,陕西西安710049 [2]日本金泽工业大学 [3]日本东海大学

出　　处：《岩土力学》2001年第1期16-20,共5页Rock and Soil Mechanics

基　　金：国家教育部留学回国人员基金资助项目(编号:1997436);陕西省自然科学基金资助项目(编号:2000C18)

摘　　要：通过对粘性土进行一系列动三轴试验，测定并分析了动荷载作用下粘性土的动剪应力、轴向应变及超孔隙水压力随时间的变化规律，分析了破坏时不同固结比的粘性土对静、动剪强度和孔隙水压力影响规律，得出了粘性土的动剪强度随固结比变化的关系式，并对粘性土的动剪强度判别方法的标准进行探讨，得出了有益的结果。A series of undrained cyclic triaxial shear tests were performed on normally consolidated or overconsolidated cohesive soils, which reveals the influences of consolidation ratio on the dynamic shear strength and pore water pressure. Additionally, monotonic triaxial compression tests were also performed on soil samples with the same initial test conditions. Dynamic anti static strength of these soils are also compared. The relationship between the dynamic shear strength and consolidation ratio for volcanic soils are obtained.

关 键 词：动剪强度 火山灰粘性土 孔隙水压力 液化 动三轴试验 固结比 

分 类 号：TU442[建筑科学—岩土工程] TU435[建筑科学—土工工程]