钢筋砼筒塔地震响应分析的一个有效方法

An Effective Method for Earthuake Response Analysis of R.C.Tube Towers

将传递矩阵与 Newmark—β法(逐步积分)和 Riccati 变换相结合,导出求解钢筋砼筒塔结构地震响应分析的传递方程,然后将结构的边界条件代入、回代,就能很方便地求出结构的动力反应。在进行地震时程分析时,不但考虑了水平地震的作用,而且还考虑了竖向地震的作用,以及它们的共同作用。本文提出的方法,用 FORTRAN—77语言编出程序 DYRAT,算例在 DPS—8机上通过,说明其精度。

In this paper,the transfer matrix method is used,combined with a numerical integrationprocedure(Newmark-β method)and the Riccati transformation,to derive the transfer equation forearthquake response analysis of R.C.towers.Dynamic structural response can be obtained efficientlyby substitution of the boundary conditions.In analysis,both horizontal and vertical earthquake actionsand their interactions are considered in the time-history response analysis.Based on the proposed method,a program,named as DYRAT,is compiled in FORTRAN-77language in a DPS-8 computer.A numerical example is given to demonstrate the accuracy of the pro-posed method.