期刊论文

Deng, Z.

中文

重庆大学学报

1000-582X

2014

37

8

59-66

10.11835/j.issn.1000-582X.2014.08.009

51308198:国家自然科学基金 2013GK3086:湖南省科技计划 12C0580:湖南省教育厅科学研究项目 13B010:湖南省教育厅青年项目

本校为第一且通讯机构

考查动应力幅值、振动频率和围压3个因素,进行3因素3水平的正交试验设计,根据正交设计方案进行动三轴试验,研究了循环动荷载下湖相软土的轴向累积应变、动孔隙水压力和动弹性模量等动力特性,并通过敏感性分析探讨了各加载因素对软土动力特性指标影响的显著性。结果表明,动应力幅值对软土轴向累积应变、动孔隙水压力和动弹性模量的影响均十分显著,围压为影响轴向累积应变和动弹性模量的次要因素,而影响动孔隙水压力的次要因素为振动频率。

Three factors, i.e. dynamic stress amplitude, vibration frequency and confining pressure, are considered for the orthogonal test design of 3 factors and 3 levels. And according to the orthogonal design, dynamic triaxial tests are carried out to study the axial accumulated strain, dynamic pore water pressure and dynamic elastic modulus of lacustrine soft soil under cyclic loads. Then the sensitivity analysis method is employed to research the sensitivity of each dynamic characteristic index influenced by various loading factors. Results show tha...