摘要
针对广州南沙原状软土进行一系列室内试验研究,探讨了软土非线性流变变形特性.所做试验包括:不考虑预压荷载的固结试验、考虑预压荷载的固结试验、分别加荷的固结试验、不同排水条件下的三轴蠕变试验等.试验结果表明:次固结系数主要受到先期固结压力pc的影响,当p<pc或p>pc时,次固结系数Cα表现出不同的变化规律;经预压处理后土样的次固结系数Cα与预压力pp密切相关;同一荷载下,分级加荷的变形量大于分别加荷的变形量;排水条件和加荷速率对蠕变变形有很大的影响.
Based on a series of odometer tests for undisturbed samples in Guangzhou Nansha, properties of non-liner rheological characteristics of soft soil have been researched.The tests include: consoildation test with or without considering preloaded,consoildation test with part-preloaded,creep test with different drainage.The results show that secondary consolidation was mainly affected by preconsoildation pressure p_c.As(p<p_c) or p>p_c,the coefficent C_α presents different regularity.After preloading,the s...
出处
《暨南大学学报（自然科学与医学版）》
CAS
CSCD
北大核心
2006年第1期75-80,共6页
Journal of Jinan University(Natural Science & Medicine Edition)
基金
广东省自然科学基金项目资助(021145)
广东省科技计划项目(2004B32801003)
广东省水利厅科技计划项目(2003-13)
关键词
软土
非线性
流变
蠕变
次固结
soft soil
non-linear
rheology
creep
secondary consolidation
