罕遇地震下半刚性连接框架弹塑性位移的实用计算

A Practical Approach for Estimating Elasto-Plastic Seismic Drift of Steel Frames with Semi-Rigid Connections

本文提出了半刚性连接框架弹塑性地震反应分析模型,并针对半刚性连接框架结构的弹塑性地震位移的实用计算开展研究。在合理选取一定数量的地震记录及典型的结构形式的基础上,基于提出的分析模型,通过大量参数统计分析,得出了半刚性连接框架结构弹塑性层间位移与各参数的定量关系,以此提出了抗震设计时进行罕遇地震作用下多层半刚性连接框架弹塑性位移计算的实用表格。

The analysis model for elasto-plastic seismic response of semi-rigidly connected steel frames is proposed. A practical approach for estimating elasto-plastic seismic story displacement is established. Based on analysis model presented in this paper, the relationship between elasto-plastic inter-story drifts of semi-rigidly connected steel frames and primary structural parameters is obtained on the basis of statistical investigation on a class of typical structures subjected to various seismic excitations. A table of factors is proposed for calculating the elasto-plastic inter-story drifts of semirigidly connected steel frames to implement aseismic design requirements under severe earthquakes.