高层建筑上部结构桩-土共同作用下随机地震响应分析  

ANALYSIS ON RANDOM SEISMIC RESPONSE OF HIGH-RISE BUILDING SUPERSTRUCTURE UNDER THE COACTION OF PILE-RAFT FOUNDATION AND SOIL

作　　者：熊仲明[1] 赵鸿铁[2] 俞茂宏[1] 

机构地区：[1]西安交通大学建力学院,西安710049 [2]西安建筑科技大学土木工程学院,西安710055

出　　处：《振动与冲击》2003年第2期60-62,39,共4页Journal of Vibration and Shock

基　　金：博士后基金资助项目

摘　　要：本文对高层建筑上部结构在桩 -土共同作用下的地震响应进行了研究。利用Bouc -Wen滞回模型构造了便于数值分析的上部结构在共同作用下的复合运动方程 ,并给出了系统状态变量的响应表达式。算例分析结果表明 :在桩 -土共同作用下 ,上部结构将有效地减少地震作用 ,它随着地基土的软弱程度的增加反映出更加明显。Seismic response of high-rise building superstructure under the coaction of pile-raft foundation and soil is studied in the paper.By using Bouc-wen model of the restoring force,the coupled equation of interaction,which is suitable for numerical analysis is constructed and the response expressed by state variables of system is given out.The simulation results indicate that the reduction of seismic response of superstructure is quite notable under pilr soil interaction especially when the soil softness is increased.

关 键 词：高层建筑 上部结构 桩-土共同作用 地震响应 Bouc-Wen滞回模型 减震 

分 类 号：TU973.31[建筑科学—结构工程]