用回传波射矩阵法分析框架的地震效应  

ANALYSIS OF EARTHQUAKE EFFECT FOR FRAMES BY THE METHOD OF REVERBERATION RAY MATRIX

作　　者：陈科夫[1] 孙国钧[1] 赵社戌[1] 

机构地区：[1]上海交通大学船舶海洋与建筑工程学院,上海200240

出　　处：《力学与实践》2010年第4期47-50,46,共5页Mechanics in Engineering

摘　　要：结构在地震载荷作用下的瞬态响应分析对抗震设计很重要.大部分地震效应研究采用时程积分等数值方法.回传波射矩阵法是桁架和框架结构瞬态响应的一种新的频域矩阵分析法.基于Bernulli梁理论的回传波射矩阵法扩展到地面加速度载荷的情形,对一榀钢制框架在地面El Centro波加速度作用下的瞬态应力计算,结果表明该方法能准确有效地进行结构的地震效应分析.Transient response analysis of structures under seismic load is important in a seismic design.Most earthquake effect studies use time domain numerical integration methods.The method of reverberation ray matrix is a novel frequency domain matrix method for transient analysis of trusses and frames.Based on Bernoulli beam theory,the present work extends the reverberation ray matrix method to the case of ground acceleration loads.The calculation of a piece of steel frame subjected to the ground El Centro acceleration wave demonstrates that the method can be used to analyze the earthquake effect of structure accurately and effectively.

关 键 词：框架 地震 瞬态响应 

分 类 号：TU311.3[建筑科学—结构工程]