Experimental study of cyclic shear behaviour of silty soils in Yellow River Delta

被引:0
|
作者
Luan Mao-tian [1 ,2 ]
He Yang [2 ,3 ]
Xu Cheng-shun [2 ,4 ]
Zhang Zhen-dong [2 ]
Wang Zhong-tao [2 ]
Guo-Ying [2 ]
机构
[1] Dalian Univ Technol, State Key Lab Coastal & Offshore Engn, Dalian 116024, Peoples R China
[2] Dalian Univ Technol, Inst Geotech Engn, Sch Civil & Hydraul Engn, Dalian 116024, Peoples R China
[3] Offshore Oil Engn Co Ltd, Design Dept Subsea Pipeline Engn Co, Tianjin 300451, Peoples R China
[4] Beijing Univ Technol, Minist Educ, Key Lab Urban Secur & Disaster Engn, Beijing 100022, Peoples R China
关键词
dynamic behaviour; undisturbed marine silty soil; wave-induced cyclic stress; dynamic deformation parameters; pore water pressure; cyclic strength;
D O I
暂无
中图分类号
P5 [地质学];
学科分类号
0709 ; 081803 ;
摘要
The soil static and dynamic universal triaxial and torsional shear apparatus was employed to perform both undrained cyclic triaxial tests and cyclic torsional tests for undisturbed silty soil samples. Based on the experimental test results, dynamic characteristics of both deformation and strength of undisturbed marine silty soil is investigated. The maximum dynamic shear modulus and the dependency of dynamic shear modulus and damping ratio on shear strain are defined through cyclic triaxial shear tests. An empirical pattern is established for residual pore water pressure generated during cyclic shear which is represented by a hyperbolic function with respect to the number of cycles of dynamic stress. And an empirical formula is developed to describe the cyclic strength with respect to the number of cycles. The related parameters involved in both patterns of pore water pressure and cyclic strength are determined by experimental tests; and their dependency on the consolidation stress ratio is clarified. The experimental data achieved from cyclic torsional shear tests are used to validate the results from the triaxial shear tests. It should be more conservative using the cyclic strength determined by triaxial shear tests in geotechnical earthquake design.
引用
收藏
页码:3211 / 3216
页数:6
相关论文
共 10 条
  • [1] [冯秀丽 Feng Xiuli], 2002, [青岛海洋大学学报. 自然科学版, Journal of ocean university of qingdao], V32, P429
  • [2] He Changrong, 1997, CHIN J GEOTECH ENG, V19, P39
  • [3] [栾茂田 Luan Maotian], 2003, [大连理工大学学报, Journal of Dalian University of Technology], V43, P670
  • [4] ANALYTICAL STUDY OF INDUCED ANISOTROPY IN IDEALIZED GRANULAR-MATERIALS
    ROTHENBURG, L
    BATHURST, RJ
    [J]. GEOTECHNIQUE, 1989, 39 (04): : 601 - 614
  • [5] Shen R F., 1994, CHINESE J GEOTECHNIC, V16, P70
  • [6] SHEN ZJ, 1999, CHINESE J GEOTECHNIC, V21, P742
  • [7] WANG Jian-hua, 1997, J HYDRAULIC ENG, P24
  • [8] Zhong X.X., 1992, CHINESE J GEOTECHN S, V14, P39
  • [9] Zhou J., 2000, CHINESE J GEOTECHNIC, V6, P701, DOI [10.3321/j.issn:1000-4548.2000.06.014, DOI 10.3321/J.ISSN:1000-4548.2000.06.014]
  • [10] 钟晓雄, 1992, 岩土力学, V13, P1