• 首页关于本刊投稿须知期刊订阅编委会期刊合作查询检索English

查看全文   查看HTML全文 下载PDF阅读器  

  张海,王震,周泽辉,尤红兵.基于DEEPSOIL的软土场地地震反应研究[J].震灾防御技术,2015,10(2):291-304, DOI:10.11899/zzfy20150209.

基于DEEPSOIL的软土场地地震反应研究
摘要:    软土场地地震反应分析是目前工程场地地震安全性评价中的重要组成部分,对场地设计地震动参数的确定具有重要意义。利用一维场地地震反应分析软件DEEPSOIL,可进行场地线性、等效线性化和时域非线性等多种分析,并可考虑孔隙水压的影响。笔者根据土层计算参数,编制了DEEPSOIL软件场地模型输入文件的自动生成程序,可高效、快速地完成对场地的建模。通过数值算例验证了DEEPSOIL软件的精度。同时通过对某典型Ⅲ类软土场地的地震反应分析,研究了拟合参数的敏感性以及等效线性化方法和时域非线性方法对峰值加速度和地表加速度反应谱的影响,并指出了等效线性化方法在分析软土场地地震反应中的不足。对于软土场地建议采用DEEPSOIL软件进行时域非线性分析,因为其参数简单并容易确定,适合建模快速和使用方便的要求。
作者单位
张海 天津城建大学土木工程学院天津300384 
王震 天津城建大学土木工程学院天津300384 
周泽辉 天津城建大学土木工程学院天津300384 
尤红兵 中国地震灾害防御中心北京100029 
关  键  词:DEEPSOIL软件  等效线性化方法  时域非线性方法  软土场地  地震反应
DOI:10.11899/zzfy20150209
基金项目:国家自然科学基金项目(编号51248004);天津市应用基础与前沿技术研究计划(编号13JCQNJC07400);天津市高校中青年骨干创新人才培养计划
收稿日期:2014-08-29
作者简介:张海,男,生于1977年。教授,博士。主要研究领域:工程波动理论、城市综合防灾减灾。E-mail: zhanghai@tju.edu.cn
通讯作者:尤红兵,男,生于1970年。研究员级高工。主要研究领域:地震工程。E-mail: hbyou@126.com
The Study of Seismic Response in Soft Soil Site Based on DEEPSOIL
Abstract:      The seismic response analysis of soft site is an important part of the current seismic safety evaluation of engineering site, and is of great significance for the determination of design ground motion parameters. One-dimensional site seismic response analysis software DEEPSOIL can be used for linear analysis, equivalent linear analysis and nonlinear time-domain analysis. The influence of the water pressure can also be considered when users need to. According to the calculated parameters of the soil, we compiled automatically generating procedures of the site model input file for DEEPSOIL software, and then the site model can be built efficiently and quickly. The precision of DEEPSOIL software was validated through numerical examples. For seismic response of a typical class Ⅲ soft site, we analyzed the sensitivity of the fitting parameters. The influence of the equivalent linear analysis method and nonlinear time-domain analysis method on the peak accelerations and ground surface acceleration response spectrum is studied, and the shortage of the equivalent linear analysis method for seismic response of the soft site is pointed out. For soft site it is recommended to use DEEPSOIL software for the nonlinear time domain analysis, because of simple parameters, rapid modeling, and convenient to apply.
Keywords:  DEEPSOIL software  Equivalent linearization method  Time-domain nonlinear method  Soft site  Seismic response
关闭