多层框架结构竖向地震作用下的时程分析  

Time-history analysis of multi-story frame structures subjected to vertical seismic action

作　　者：张永康[1] 刘洪兵[1] 张春燕[1] 

机构地区：[1]西北工业大学力学与土木建筑学院,陕西西安710072

出　　处：《四川建筑科学研究》2005年第4期95-96,103,共3页Sichuan Building Science

摘　　要：采用了考虑结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采用静力凝聚法,消去竖向位移和转角位移之间的耦联关系,从而使动力矩阵的维数得到降低,进而使框架结构的抗震计算工作量大大减少。通过具体算例分析,得出了多层框架结构在竖向地震作用下的一些动力反应特点。This paper presents the series- parallel - connection model with considering joint rotation. To the dynamic matrix of plan frame, through static force condensing, the coupling relationship of vertical displacement and rotation is eliminated. Thereby, the degree of dynamic matrix and the quantity of earthquake - resistant calculation are lowering. The example obtains some dynamic response characteristic from the result of multi-story frame structures subjected to vertical earthquake action.

关 键 词：竖向地震 节点转动 串并联多质点系 时程分析 

分 类 号：TU311.3[建筑科学—结构工程]