摘要
依据常规试验成果,对岩土材料的剪胀、剪缩和应变软化特性进行简化后,利用弹塑性理论和体积平衡原理,推导出应变软化Tresca材料中扩孔问题的一般解答,并分析了不排水饱和土扩孔问题的规律性,对解决诸如沉桩挤土效应等工程问题具有一定的应用价值。
Based on conventional experiment results, a simplified constitutive model is given to simulate the strain-softening and shear dilating characters of soils. By using elastoplastic theory and volume-balance equation, an analytical solution to cavity expansion of saturated clays is established with Tresca yield criterion. The regularities of cavity expansion in saturated clays are analyzed under undrained condition. The results have practical significances for analyzing engineering problems such as static piling in clays.
出处
《岩土力学》
EI
CAS
CSCD
北大核心
2004年第2期261-265,共5页
Rock and Soil Mechanics
基金
上海市教育发展基金会"曙光计划(2001)"项目。
关键词
剪胀
应变软化
Tresca屈服准则
扩孔
饱和软粘土
shear dilation
strain-softening
Tresca yield criterion
cavity expansion
saturated clays
