确定平面应变条件下无粘性土中主应力的一个经验公式

史宏彦　

摘　要：基于试验结果，提出了一个确定平面应变条件下无粘性土中主应力σ₂的经验公式。利用该式可以简便地确定出荷载作用过程中中主应力的变化，算例及试验结果表明具有重要的实用意义。
关键词：平面应变；无粘性土；中主应力；经验公式
分类号：TU441.4　文献标识码：A
文章编号：1007-4112(2001)01-0019-04

An Empirical Formula Determining Intermediate Principal Stress of Cohesionless Soil under Plane Strain Condition

SHI Hong-yan（Department of Civil Engineering,Shantou University,Shantou,515063,China）　
LIU Bao-jian（College of Highway Engineering, Chang′an University, Xi′an 710064, China）　

Abstract：On the basis of experimental results,an empirical formula deter mining intermediate stress σ₂ of cohesionless soil under plane strain condition is presented.With the formula the change of σ₂ can be easily determined during loading.The example and test show that this formula has significantly practical value.
Keywords：plane strain;cohesionless soil;intermediate principal stress;empirical formula

参考文献：

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［6］史宏彦.无粘性土的应力矢量本构模型［D］.西安：西安理工大学，2000.

收稿日期：2000年10月8日

出版日期：2001年1月1日