岩土工程学报2012，Vol.34Issue(12)：2249-2254,6.
长期循环荷载作用下温州结构性软黏土的应变特性研究
Long-term cyclic strain behavior of Wenzhou structural soft clay
摘要
Abstract
Undrained monotonic and high-cycle loading (50000 cycles) triaxial teats are conducted on natural Wenzhou soft clay to study the influence of soil structure on the strength and cyclic strain behavior. The results show that when the confining pressure is low, the soil structure has little damage during consolidation, and the test samples exhibit higher normalized strength. With the increase of the confining pressure, the normalized strength decreases. When the confining pressure is higher than the yield pressure, the soil structure is completely damaged during consolidation, and then the normalized strength reaches a constant value, which is similar to that of remold samples. Because of this characteristic, the cyclic strain behavior of soft clay shows a clear difference with the confining pressure even keeping a constant value of qd/Po = 0.45. The differences in stress-strain hysteresis loop, resilient behavior and permanent strain are discussed.关键词
软黏土/结构性/应力-应变滞回曲线/回弹特性/累积塑性应变Key words
soft clay/soil structure/stress-strain hysteresis loop/resilient behavior/cumulative plastic strain分类
建筑与水利引用本文复制引用
郭林,蔡袁强,王军,谷川..长期循环荷载作用下温州结构性软黏土的应变特性研究[J].岩土工程学报,2012,34(12):2249-2254,6.基金项目
国家自然科学基金项目 （）
国家重点基础研究发展计划项目 （）
