动力分析中无限地基两种近似方法的应用研究  

Study on application of two approximate base models to the soil-structural dynamic interaction analysis

作　　者：陈健云[1] 李静[2] 李建波[2] 

机构地区：[1]大连理工大学海岸与近海工程国家重点实验室,大连116024 [2]大连理工大学土木水利学院,大连116023

出　　处：《岩土力学》2006年第3期373-377,共5页Rock and Soil Mechanics

基　　金：国家自然科学基金资助(No.50209002);辽宁省自然科学基金资助(No.20022130)

摘　　要：在结构-地基的动力相互作用分析所提出的众多方法中,无质量地基和黏性边界地基仍然是应用最为广泛的近似方法。针对当前结构-地基动力相互作用分析中地基模型处理中的一些问题,通过结构-地基动力相互作用分析公式的推导以及各变量物理意义的解释,详细阐明了当前考虑地基影响的动力分析中无质量地基和黏性边界地基的概念和应用范围,对当前部分研究中应用这两种地基中存在的问题进行了分析说明,为简化地基动力分析模型提供了思路。The massless base model and viscous boundary base model are still the most widely applied approximate methods for easiness though many approaches have been proposed for the seismic response analysis of soil-structure system. But there are some problems in the application of various of approximate dynamic unbounded soil model. In this paper, detailed formula for the soil-structure dynamic interaction analysis is derived; the concept and the application criteria of mass-less base model and viscous boundary base model are clarified; and a simplified soil model for dynamic soil-structure interaction analvsis is suggested.

关 键 词：结构-地基相互作用 地下结构 地震 无质量地基 黏性边界 

分 类 号：TU528.1[建筑科学—建筑技术科学]