核心筒结构破坏模式分析

The Analysis of the Failure Mode of Core Tube Structure

文章通过静力弹塑性方法对核心筒进行推覆分析,研究了核心筒在地震作用下的屈服破坏模式,并在此基础上通过改变结构的高宽比和连梁高度,进行了一系列对比模型的分析比较。分析结果表明:合理设计的核心筒在水平作用下可以实现强墙肢-弱连梁的破坏模式;核心筒高宽比较大及连梁高度较高时连梁屈服不充分,不利于实现理想破坏模式。

In this paper,by the method of Pushover Analysis,Failure mode of core tube structure is researched.Besides,by changing the ratio of height to width and the height of coupling beam,a series of comparative analysis was done.The results show that the reasonably designed core tube structure can follow ideal failure mode,which has strong pier and weak coupling beam.However, when the ratio of height to width or the height of coupling beam is high,only some coupling beams are in the yield state,and the failure mode is not ideal.