广州地区海积软土蠕变特性试验研究  

Experimental Study on Creep Behaviors of Marine Soft Soil in Guangzhou

作　　者：杜雅峰[1] 夏欢欢[2] 刘会平[3] 王巍[1] 

机构地区：[1]华北水利水电学院资源与环境学院,河南郑州450011 [2]成都理工大学 四川省数学地质重点实验室,四川成都610059 [3]河南省地矿局第二地质勘查院,河南许昌461000

出　　处：《水利与建筑工程学报》2013年第2期12-16,共5页Journal of Water Resources and Architectural Engineering

基　　金：国家自然科学青年基金项目(40602034)

摘　　要：为探求广州地区海积软土在长期荷载作用下的蠕变规律,对广州地区海积软土开展了三轴压缩试验和不同固结围压作用下的三轴固结不排水蠕变试验,系统探讨了海积软土蠕变变形特性。试验结果表明,海积软土蠕变特性与多种因素有关,包括围压水平、偏压力水平、排水条件等;该地区软土具有较强的非线性蠕变特性,非线性特性通过偏应力水平的增大而逐渐显现;孔压增量与应力增量并非线性关系。For the search of the marine soft soil＇ s creep rule in Guangzhou area, the serious tests are carried out, includ- ing triaxial compression test and triaxial undrained consolidation creep test in different confining pressure so as to analyse the creep deformation characteristics of marine soft soil systematically. The experiment results indicate that there are many factors impacting on the creep characteristics of clay＇ s creep rule, such as confining pressure level, partial pressure level, drainage condition and so on; The marine soft soil in this area has the nonlinear creep feature, which could be revealed gradually with the increasing of partial stress; The relationship between hole pressure increment and stress increment is nonlinear.

关 键 词：软土 蠕变 结构性 

分 类 号：TU411[建筑科学—岩土工程]