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《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

卷:

26卷

期数:

2009年04期

页码:

1-6

栏目:

出版日期:

2009-12-20

文章信息/Info

Title:

Numerical Simulation and Test Verification of Liquefiable Soil Under Seismic Action

作者:

吕西林，任红梅，李培振

同济大学土木工程防灾国家重点实验室,上海200092

Author(s):

LU Xi-lin, REN Hong-mei, LI Pei-zhen

State Key Laboratory for Disaster Reduction in Civil Engineering, Tongji University, Shanghai 200092, China

关键词:

可液化土;  地震响应;  数值模拟;  孔隙水压力;  动力特性

Keywords:

liquefiable soil;  seismic response;  numerical simulation;  pore water pressure;  dynamic characteristic

分类号:

TU352.1

DOI:

-

文献标志码:

A

摘要:

将有限差分法程序用于可液化土的地震响应分析,采用动力和流体的流固耦合理论分析了振动过程中土体孔隙水压力的产生、扩散与消散,并对液化场地桩-土-结构相互作用体系振动台试验进行了三维数值模拟; 通过与振动台试验数据的对比分析,验证了计算模型的可靠性和合理性。结果表明:采用的方法能较好地模拟可液化土的动力特性,所得结论为液化场地土-结构相互作用体系动力分析提供了参考。

Abstract:

Finite differential program was employed to analyze the seismic response of liquefiable soil. Fluid-mechanical coupling method was employed to calculate the generation, diffusion and dissipation of pore water pressure in the soil during vibration process; furthermore, 3-D numerical simulations on shaking table tests of pile-soil-superstructure interaction system in liquefaction field were performed. Through comparing with the data of shaking table tests, the reliability and validation of the calculation model were verified. The results show that the dynamic characteristics of liquefaction soil can be simulated by using this method. The research work can provide references for dynamics analysis of soil-structure interaction system in liquefaction field.

参考文献/References:

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备注/Memo

备注/Memo:

收稿日期:2009-09-14
基金项目:国家自然科学基金重点项目(90815029); 上海市青年科技启明星计划项目(07QA14054)
作者简介:吕西林(1955-),男,陕西岐山人,长江学者特聘教授,博士研究生导师,工学博士,E-mail:lxlst@tongji.edu.cn。

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更新日期/Last Update: 2009-12-20