地震工程学报Issue(3)：713-717,726,6.DOI:10.3969/j.issn.1000-0844.2014.03.0713
初始主应力方向对饱和粉土循环剪切特性的影响
The Effect of Initial Principal Stress Orientation on the Cyclic Shear Behavior of Saturated Siltehavior of Saturated Silt
郭莹 1张俊峰2
作者信息
- 1. 大连理工大学土木工程学院岩土工程研究所，辽宁 大连 116024
- 2. 大连理工大学海岸和近海工程国家重点实验室，辽宁 大连 116024
- 折叠
摘要
Abstract
By using a soil static and dynamic universal triaxial and torsional shear apparatus, stress-controlled undrained cyclic torsional tests were performed on remolded saturated silt pre-pared by tamping methods with initial sampling water contents of 0% and 10%.The initial aniso-tropic consolidation conditions included an initial mean principal stress of 100 kPa,an initial inter-mediate principal stress coefficient of 0.5,an initial deviator stress ratio of 0.433,and principal stress initial orientation angles of 0°,30°,and 45°,respectively.During the undrained cyclic shear-ing process,the mean principal stress and the intermediate principal stress coefficient were fixed. We studied the effects of the initial orientation of the principal stress and the initial sampling wa-ter content on the silt’s dynamic shearing deformation,its strength,and its pore water pressure development.The test results show that the extent of the initial principal stress orientation’s effect on the remolded silt’s deformation and strength behaviors varied,and that the initial sam-pling water content has considerable influence on the cyclic behavior of saturated remolded silt.关键词
初始主应力方向/初始成样含水率/饱和粉土/动强度/循环孔隙水压力/应力-应变关系Key words
initial orientation of principal stress/initial sampling water content/saturated silt/dynamic strength/shaking-induced pore water pressure/stress-strain relations分类
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郭莹,张俊峰..初始主应力方向对饱和粉土循环剪切特性的影响[J].地震工程学报,2014,(3):713-717,726,6.
