建筑基础中设备对土-结构动力相互作用影响的一个解析解  

An analytical solution for dynamic soil-structure interaction with considering the influence of building equipment

作　　者：梁建文[1,2] 金立国[2] 

机构地区：[1]天津大学水利工程仿真与安全国家重点实验室,天津300354 [2]天津大学建筑工程学院土木工程系,天津300354

出　　处：《地震工程与工程振动》2016年第5期10-20,共11页Earthquake Engineering and Engineering Dynamics

基　　金：国家自然科学基金项目(51378348;51578372)~~

摘　　要：为研究建筑基础中设备对土-结构动力相互作用的影响，论文建立了刚柔复合基础上多质点理想数学模型，将基础中设备抽象为质点，并在波动法中引入有限元单元离散思想，给出了考虑基础中设备对土-结构动力相互作用影响的一个解析解。研究表明，当基础较柔且设备质量较大时，上部结构的动力响应可放大30％-50％。本文对于相关工程设计具有一定的参考价值。To consider the influence of building equipment on the dynamic soil-structure interaction, this paper proposes a mathematical model of a MDOF on rigid-flexible composite foundation, treats the building equipment as a particle in the foundation, and presents an analytical solution for dynamic soil-structure interaction by introducing the idea of FEM element discretization into the wave propagation method. It is shown that when the foundation is relatively flexible and the equipment mass is relatively heavy, the response of superstructure with considering equip- ment influence can be amplified by 30% - 50% than that without considering equipment influence. This paper has some value to the associated engineering design.

关 键 词：设备 复合基础 土-结构动力相互作用 单元离散 波动法 SH波 

分 类 号：TU311[建筑科学—结构工程]