巨型框架结构竖向地震作用抗震性能研究

Study of Aseismatic Performance of Mega-frame Structure Systems Subjected to Vertical Earthquake Action

本文对在竖向地震作用下的巨型框架结构采用考虑节点转动的串并联多质点系模型;并对在该模型下建立的动力矩阵用动力凝聚法进行简化,推导了相应的振动微分方程。通过具体算例分析得出了巨型框架结构在竖向地震作用下的一些震害特点。

This paper presents the series-parallel-connection model with considering joint rotation.Through dynamic force condensing,the dynamic matrix of mega-frame is simplified,and corresponding oscillatory differential equation is obtained.The results of the computational example show that some seismic damage characteristics of mega-frame structures are subjected to vertical earthquake action.