柱-环梁法对料仓框架结构地震响应研究

为研究料仓-框架及其等效模型在地震作用下的动力响应，拟结合某石化公司脱气及储存料仓-框架结构项目，将料仓按刚度等效原则，简化为柱-环梁结构。通过改变柱环梁截面尺寸及环梁道数，建立料仓-框架结构与柱环梁-框架结构的有限元模型，进行对比分析，并选取合理的柱环梁-框架模型对原结构进行模拟。在此基础上，进而确定了刚度等效增大系数为1.25。采用时程分析法，选取EL-Centro波、Taft波和人工波SHM2波3种地震波，给出了结构在3种工况下的最大位移与最大等效应力地震响应。

Study on Seismic Response of Silo Frame Structure by Column Ring Beam Method

In order to study the dynamic response of silo frame and its equivalent model under earthquake action, this paper intends to simplify the silo into column ring beam structure according to the principle of stiffness equivalence in combination with the degassing and storage silo frame structure project of a petrochemical coMPany. By changing the cross-section size of column ring beam and the number of ring beam, the finite element models of silo frame structure and column ring beam frame structure are established, and the reasonable column ring beam frame model is selected to simulate the original structure. On this basis, the equivalent increase coefficient of stiffness is determined to be 1.25. Using time history analysis method, three seismic waves, El Centro wave, Taft wave and artificial wave shm2 wave, are selected to give the maximum displacement and maximum equivalent stress seismic response of the structure under three working conditions.