孔压静探模型槽试验中土应力的变化规律  

The Variated Rule of Soil Stress in CPTU Chamber Test

作　　者：汤艳春[1] 孟高头[1] 

机构地区：[1]中国地质大学(武汉)工程学院,湖北武汉430074

出　　处：《西部探矿工程》2004年第1期17-18,共2页West-China Exploration Engineering

基　　金：国家自然科学基金项目 (基金号 40 1 72 0 90 )

摘　　要：通过以粘土为介质的孔压静探 (CPTU)模型槽试验研究 ,根据埋置在土中的微型土压力盒在贯入过程中所测到的土应力 (轴向附加应力和径向附加应力 ) ,分别分析了轴向和径向附加应力的变化规律 ,并进行了比较。然后根据所得到的轴向和径向附加应力值以及它们的变化规律 ,得到了由于探头贯入而产生的轴向和径向附加应力场 。Through studying the CPTU chamber test with the soil as a medium in door,according to the stress which generated in the course of probe penetrating,include axial additional stress and radial additional stress,measured by subminiature pressure cells which buried in the soil,this paper analyzed the rule of variation of axial and radial additional stresses,and compared with each other.And then according to the value of axial and radial additional stress and their rule of variation,this paper gained the axial and radial additional stress field which generated by the probe penetrating,and analyzed the character of them and the comparability and differences between axial and radial additional stress field.

关 键 词：土应力 应力场 模型槽试验 

分 类 号：TU413[建筑科学—岩土工程]