摘要
通过对杭州软粘土进行应力控制的循环三轴试验,研究了各向异性固结软粘土的循环软化特性及孔压发展规律.试验结果表明,随着循环次数的增加和循环应力比的提高,软化指数逐渐降低,残余孔压逐渐增高;当采用各向异性固结时,初始静剪应力的增大会造成土体软化加快,但残余孔压变化缺乏一定规律性.建立了各向异性固结软粘土循环软化-孔压模型,该模型反映了软粘土循环软化特性及残余孔压增长规律.
In this paper,the residual pore-water pressures correlating to degradation index of anisotropic consolidated clay subjected to uniform stress-controlled triaxial loading are investigated.It is observed that the degradation index is lowered and the residual pore-water pressure is increased with the increasing number of cycles and the cyclic stress ratio.For anisotropic consolidated clay,the degradation index is lowered reduced with the increasing initial consolidation shear stress,however the development of ...
出处
《哈尔滨工业大学学报》
EI
CAS
CSCD
北大核心
2009年第12期166-170,共5页
Journal of Harbin Institute of Technology
基金
国家自然科学基金资助项目(50979096
50808145
50908212)
浙江省自然科学基金资助项目(Y1090105)
温州市科技计划资助项目(S20080046
S20090006)
浙江省建设厅科研资助项目(08Z027)
关键词
应变软化
循环荷载
孔压
各向异性固结
degradation
cyclic loading
pore water pressure
anisotropic consolidation
