上海交通大学学报

上海交通大学学报 >

2009 , Vol. 43 >Issue 02: 173 - 177

DOI: https://doi.org/10.16183/j.cnki.jsjtu.2009.02.004

不同库区水位下坝基地震液化的有效应力分析

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  • 1.上海交通大学土木工程系，上海 　200030
    2.日本地域地盘环境研究所, 大阪
    3.日本名古屋工业大学，名古屋
    4.南昌工程学院，南昌 　330099
夏志凡（1978-)，男，江西丰城市人，博士生，主要研究方向为岩土地震工程．|王建华（联系人），男，教授，博士生导师，电话（Tel.): 021-62932915; E-mail: wjh417@sjtu.edu.cn

收稿日期: 2008-04-23

  网络出版日期: 2021-04-25

基金资助

国家自然科学基金资助项目(50679041);上海市教委重点学科资助项目(B208)

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Effective Stress Analysis of Earthquake Induced Liquefaction of Dam Foundation under Different Water Table in Reservoir

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  • 1.Department of Civil Engineering, Shanghai Jiaotong University, Shanghai 200030, China
    2.Geo-Research Institute, Osaka, Japan
    3.Nagoya Institute of Technology, Nagoya, Japan
    4.Nanchang Institute of Technology, Nanchang 330099, China

Received date: 2008-04-23

  Online published: 2021-04-25

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摘要

采用基于有效应力的完全耦合动力分析方法和Cyclic mobility动力本构模型，以某水库大坝作为工程实例进行分析，讨论在设计水位和死水位情况下坝基的地震液化可能性．计算结果表明，Cyclic mobility本构模型可以很好地模拟饱和砂土的液化．通过分析可以得出如下结论：在死水位情况下坝基的液化区域较设计水位情况下减少，但由液化所引起的上游变形明显增大，因此设计时需要对此引起注意．

关键词： 坝基; 液化; 交变移动性; 有效应力法; 动力分析

本文引用格式

夏志凡, 叶冠林, 王建华, 叶斌, 张锋 . 不同库区水位下坝基地震液化的有效应力分析[J]. 上海交通大学学报, 2009 , 43(02) : 173 -177 . DOI: 10.16183/j.cnki.jsjtu.2009.02.004

Abstract

The earthquake induced liquefaction of dam foundation was analyzed using an effective-stress based, fully coupled dynamic analysis method, in which the behavior of the sandy soil is described by means of a cyclic mobility constitutive model. The paper is primarily concerned with different responses under design water table and dead water table in a reservoir. The results show that the cyclic mobility constitute model can reflect the dynamic response of liquefiable soils, and that the liquefaction zone under dead water table decreases compared with the case of design water table, but the liquefaction induced deformations increase obviously in the upstream.

Key words： dam foundation; liquefaction; cyclic mobility; effective stress method; dynamic analysis

参考文献

[1] Ming H Y, Li XS. Fully coupled analysis of failure and remediation of Lower San Fernando Dam[J]. Journal of Geotechnical and Geoenvironmental engineering, 2003, 129(4): 336-349.
[2] Sharp M K, Adalier K. Seismic response of earth dam with varying depth of liquefiable foundation layer[J]. Soil Dynamics and Earthquake Engineering, 2006, 126: 1028-1037.
[3] Sica S, Pagano L, Modaressi A. Influence of past loading history on the seismic response of earth dams[J]. Computers and Geotechnics, 2007, 35: 61-85.
[4] Elgamal A, Parra E, Yang Z, et al. Numerical analysis of embankment foundation liquefaction counter-measures[J]. Journal of Earthquake Engineering, 2002, 6(4): 447-471.
[5] 蔡袁强, 钱磊, 凌道盛, 等.钱塘江防洪堤地震液化及稳定分析[J]. 水利学报, 2001, 32(1): 57-61.
[5] CAI Yuan-qiang, QIAN Lei, LING Dao-sheng, et al. Seismic liquefaction and stability analysis of Qiantang River Embankment[J]. Journal of Hydraulic Engineering, 2001, 32(1): 57-61.
[6] Zhang F, Ye B, Noda T, et al. Explanation of cyclic mobility of soils: Approach by stress-induced anisotropy[J]. Soils and Foundations, 2007, 47(4): 635-648.
[7] 张锋.计算土力学[M]. 北京: 人民交通出版社, 2007.
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