珠江口海洋软土滞回曲线特征研究  

The research on the characteristics of hysteresis curves of marine soft soil of the Pearl River estuary

作　　者：刘文程[1] 宋金良[1] 陈章毅[1] 廖原[1] 

机构地区：[1]广州大学土木工程学院,广东广州510006

出　　处：《广州大学学报（自然科学版）》2014年第6期54-58,共5页Journal of Guangzhou University:Natural Science Edition

基　　金：国家973资助项目(2011CB013600-6)

摘　　要：采用不同频率循环加载的方式对珠江口海洋软土进行动三轴试验,通过对软土滞回曲线的分析可以了解到动应变幅值、残余应变、刚度和能量耗散能力的变化,结果表明:随着荷载的增大,动应变幅值越大,残余应变先增大后减小,刚度和能量耗散能力减小;随着频率的增大,动应变幅值、残余应变以及能力耗散能力均减小,但刚度无明显变化.Triaxial tests for marine soft soil of the Pearl River estuary on the condition of different frequencies of cyclic loading are carried out to learn the dynamic strain amplitude,residual strain,stiffness and energy dissipation capacity by studying the hysteresis curves of marine soft soil.The test results showed that：with increasing loads,dynamic strain amplitude increases,residual strain increases and then decreases,stiffness and energy dissipation capacity decrease;with increasing frequency,dynamic strain amplitude,residual strain and energy dissipation capacity decrease,but no significant change in stiffness.

关 键 词：海洋软土 动三轴 滞回曲线 特征研究 

分 类 号：TU411.8[建筑科学—岩土工程]