考虑场地各向异性的结构输入地震反应谱调整
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摘要
为了预测地震动特性,同时考虑场地土动力特性各向异性及其对结构输入地震动的影响,基于地震各向异性理论,提出了场地动力特性各向异性的概念,研究了场地动力特性各向异性的微动测试分析方法.考虑地震动的各向异性特征,分析了地震动各向异性对结构地震动力响应的影响,以及结构分析中现有的地震时程选择和调整中存在的问题,提出了基于场地微动测试确定场地动力特性及其各向异性的输入地震动调整新思想.
Considering the anisotropic characteristic of soil and the influence of earthquake input under anisotropy dynamic properties of the soil,the conception of the ground dynamic properties has been put forward to predict the characteristics of ground seismic.The method for determining the dynamic properties of the soil by use of ground microtremor,based on the theory of elastic wave,has been studied in this article.Considering also the anisotropic characteristic of ground motion,this paper analyses the influence of the architecture response under anisotropic ground seismic and discusses some problems of the existing methods to the choice and the adjustment of determining seismic ground motion time history for analysis of structures.A method of determining ground motion time history on the basis of site condition that is determined by use of ground microtremor can also be used for predicting the anisotropy characteristics of ground seismic.
Considering the anisotropic characteristic of soil and the influence of earthquake input under anisotropy dynamic properties of the soil,the conception of the ground dynamic properties has been put forward to predict the characteristics of ground seismic.The method for determining the dynamic properties of the soil by use of ground microtremor,based on the theory of elastic wave,has been studied in this article.Considering also the anisotropic characteristic of ground motion,this paper analyses the influence of the architecture response under anisotropic ground seismic and discusses some problems of the existing methods to the choice and the adjustment of determining seismic ground motion time history for analysis of structures.A method of determining ground motion time history on the basis of site condition that is determined by use of ground microtremor can also be used for predicting the anisotropy characteristics of ground seismic.
引文
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[11]彭远黔,路正,李雪英,等.场地脉动卓越周期在工程抗震中的应用[J].华北地震科学,2000,18(4):61-68.
[12]杨柏坡,窦立军.地震安全性评价和高层建筑的地震动输入[J].地震工程与工程振动,2000,20(1):35-41.
[13]杨溥,李英明,赖明.结构时程分析法输入地震波的选择控制指标[J].土木工程学报,2000,33(6):33-37.
[14]高广运,吴世明,周健,等.场地卓越周期的讨论与测定[J].工程勘察,2000.(5):29-31.
[15]Bard P Y.M icrotrem ors m easurem en ts:a too l for site effect estim ation[A].ESG 98 Sym posium[C].1998.
[16]谢忠球,温佩琳.各向异性场地微动数值模拟研究[J].中南林学院学报,2004,24(1):70-74.
[2]李英明,杨洁,赖明.双向水平地震动峰值特性的相关性研究[J].重庆建筑大学学报,1999,21(2):5-11,18.
[3]陈国兴,孙士军,宰金珉.多维相关地震动作用下结构反应的反应谱法[J].南京建筑工程学院学报,1999,(2):15-17.
[4]李宏男.结构多维抗震理论与设计方法[M],北京:科学出版社.1998.
[5]蔡宏英,周健.深厚覆盖软土地层多向地震动力反应分析[J].同济大学学报,2000,28(2):177-182.
[6]戴国莹.新建筑抗震设计规范简介[J].建筑结构,2001,31(10):68-71.
[7]窦立军.场地条件与设计地震动[D].哈尔滨:中国地震局工程力学研究所,2001.
[8]谢忠球.各向异性介质中的场地微动理论及其应用研究[D].长沙:中南大学,2002.
[9]郑柱坚.场地卓越周期的测定及其在建筑抗震设计中的应用[J].工程抗震,2000.(1):36-39.
[10]窦立军,杨柏坡,雷艳,等.根据场地条件确定地震动时程的方法[J].世界地震工程,2001,17(2).
[11]彭远黔,路正,李雪英,等.场地脉动卓越周期在工程抗震中的应用[J].华北地震科学,2000,18(4):61-68.
[12]杨柏坡,窦立军.地震安全性评价和高层建筑的地震动输入[J].地震工程与工程振动,2000,20(1):35-41.
[13]杨溥,李英明,赖明.结构时程分析法输入地震波的选择控制指标[J].土木工程学报,2000,33(6):33-37.
[14]高广运,吴世明,周健,等.场地卓越周期的讨论与测定[J].工程勘察,2000.(5):29-31.
[15]Bard P Y.M icrotrem ors m easurem en ts:a too l for site effect estim ation[A].ESG 98 Sym posium[C].1998.
[16]谢忠球,温佩琳.各向异性场地微动数值模拟研究[J].中南林学院学报,2004,24(1):70-74.
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