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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.
The transient response analysis of the structure under earthquake load is very important for the design of aseismic design.Most of seismic effects are studied by means of time-integral method and other numerical methods.The backpropagation matrix method is a new frequency response of truss and frame structure Domain matrix analysis method.Based on the Bernoulli beam theory backscattering matrix method extended to the ground acceleration load case, the transient stress calculation of a steel frame in the El Centro wave acceleration, the results show that the method can accurately Seismic effect analysis of structure effectively.