破损结构地震反应简化分析法的单自由度破损模型研究

MSP(Multi-step pushover method)法是一种弹塑性推覆方法,可以评估破损状态的建筑结构的地震反应。它以地震反应谱作为输入,根据结构的动力特性分配荷载,逐步推覆,得到破损结构的最大地震反应,简便实用。作者针对MSP法中破损模型的选择和改善问题进行了专门研究和探讨。通过与非线性时程法进行对比,首次提出适用于单自由度体系的破损模型。实例计算表明,本文提出的模型可用,分析误差小,有助于MSP法进一步完善。

The breakage structure earthquake responds the simplification analytic method the single degree of freedom breakage model study

Multi-step pushover method (MSP) is a new earthquake damage evaluation method according with current code, which is proved to be a method with high efficiency, simplicity and good accuracy. It has been widely used in civil engineering seismic damage forecasting . In MSP method, The stiffness model (MSK) of the civil engineering building is affected by several factors which have not yet been completely realized. In this paper, a nonlinear SDOF MSK model, based parallelogram hysteretic model is put forward. The error between MSP method and nonlinear time-stepping method is suitable to the demand of the civil engineering building.