考虑屋盖整体空间工作时的单层偏心厂房的平扭耦联地震反应分析

本文研究了单层偏心厂房的平动-扭转耦联地震反应.建立了考虑屋盖整体空间工作时的地震反应运动方程,并进行了分析,讨论.指出在包含有地震动转动分量作用时,地震动各运动分量独立作用的迭加原理和动力反应分析的振型分解法已不再适用.本文在不计地震转动分量的前提下,对单层偏心厂房的平扭耦联地震反应进行了大量的计算及对比分析,结论是:考虑屋盖变形后的计算结果能更好地解释地震破坏现象,并指出了不考虑屋盖变形的适用范围.

The Analysis of the Translation-Torsion Coupling Earthquake Responses of Single-Story Eccentric Factory Buildings with Consideration of Roof Whole-Space-Work

Scholars at home and abroad have done a great deal of work on analysing translation-torsion coupling earthquake responses of single-story eccentric factory buildings,but all of them ignored the deformation of the roof of the building, This paper simplifies the roof system of the building as an elastic shear beam,According to this scheme, general equations of motion of single-story eccentric factory buildings under the action of horizontal and torsional earthquake components have been established and discussed.In this paper, the translation-torsion coupling earthquake responses of some buildings are calculated and analysed by medal analysis procedure with the use of response spectrum without consideration of the earthquake torsional component. The conclusion of the roof is considered,and the results of calculation are more conformable to the actual earthquake dam age.Moreover,this paper presents a simplified method for calculation and points out the conditions in which the deformation of the roof can be neglected.