相连两结构体系的动力特性和抗震性能

不同动力特性的子结构通过某种方式连接后，体系的动力特性不仅取决于独立结构和连接构件本身的性能，而且还取决于它们之间的相互作用，其相互作用的影响程度主要是取决于连接构件的刚度以及连接方式。研究了此类结构体系的动力特性随着连接构件刚度的变化规律。对于利用天桥相连的两实际结构三雏模型的时程分析结果显示：（1）子结构的各项反应有着不同的变化规律，因此不能仅从一项反应的结果得出一般的结论；（2）利用非耗能元件相连结构动力特性的变化非常大，设计时不能忽视。

Study on Dynamic Behavior of Two Connected Structures

Dynamic behavior of structural system connected by the connectors not only depends upon the individual structures but also depends upon the mutual interactions(dynamic coupling) among them.The level of influence of mutual interaction completely relies on the stiffness of connectors and the method of connection.This paper performed a numerical analysis in order to study the sensitivity of the stiffness towards the changes in dynamic behavior of connected structural system.Time history analysis of a three dimensional model of connected structure shows that even a very small stiffness of connectors causes drastically different dynamic responses of the individual structures.From the diversification of different seismic responses it is concluded that design of such types of structures should be specially treated for each and every responses;moreover it is(simply) impossible to draw a deterministic conclusion from the analytical results of just a few responses.