地基土—偏心结构相互作用体系强解耦法可行性研究  

Feasibility Study on Forced Decoupling Method for Lateral-torsional Coupling of Soil-asymmetric Structure

作　　者：王美丽[1] 姜忻良[2,3] 兰姣霞[1] 

机构地区：[1]军事交通学院基础部,天津300161 [2]天津大学建工学院,天津300072 [3]天津市土木工程结构及新材料重点实验室,天津300072

出　　处：《水利与建筑工程学报》2011年第1期62-65,94,共5页Journal of Water Resources and Architectural Engineering

摘　　要：进行了平扭耦联问题时域内地震反应分析,建立了地基土—偏心结构相互作用体系弹性地震反应运动方程,采用Wilson-θ法编制Matlab程序在时域内直接积分得到体系地震反应,并与地震波频域内强解耦法计算的体系地震反应结果进行对比来验证强解耦法的可行性。结果表明:采用强解耦法得到的地震反应与采用时域内直接积分得到的地震反应非常接近,表明强解耦方法求解地基土—偏心结构相互作用体系平扭耦联问题的可行性,为地基土—偏心结构相互作用体系地震反应分析提供新的方法和理论依据。In order to study the feasibility of the forced decoupling method in solving the earthquake response of soil-asymmetric structure interaction system,the time domain analysis is made here on lateral-torsional coupling response.Acoording to the lateral-torsional coupling vibration equations of soil-asymmetric structure system,the direct integral MATLAB program in time domain is made by using Wilson-θ method,and the feasibility of the forced decoupling method is verified by comparing the result in time domain with the result in frequency domain.Finally,it is derived that the results are very close to each other,which could verify the feasibility of the forced decoupling method.This conclusion could supply references to the engineering calculation and structural design of similar projects.

关 键 词：偏心结构 强解耦 土—结构相互作用 平扭耦联 直接积分法 

分 类 号：TU311.3[建筑科学—结构工程] TU352.11