摘要
为了提高坡地建筑的抗震性能,本文对坡地建筑掉层框架结构强震破坏模式进行研究。通过分析掉层框架结构与平地框架结构在大震下破坏模式的差异,给出了三种坡地建筑掉层框架结构大震下破坏模式,考虑到坡地建筑掉层框架结构在上接地水平地震振动放大效应,采用分段侧向模式,分析了坡地建筑掉层框架结构从左到右、从右到左的推覆情况,得到坡地建筑掉层框架结构在不同掉层数下和不同掉跨数下的推覆曲线,分析了掉层数和掉跨数对坡地建筑掉层框架结构大震下破坏模式的影响,为该类结构设计提供了一定的参考建议。
In order to improve the seismic performance of sloping buildings,a study on the failure mode of falling-story frame structures of sloping buildings under strong earthquake is proposed.Based on the analysis on the failure mode difference between the dropped frame structure and the flat frame structure under a large earthquake,three failure modes of the dropped frame structure of the slope building under a large earthquake are given.Considering that the dropped frame structure of the slope building is grounded on the horizontal,the paper uses the segmented lateral mode to analyze the push-over situation of the frame structure of the sloping building from left to right and from right to left.The push-over curve of the dropped-story frame structure of the sloping building under different number of floors and under different number of dropped spans is obtained.The influence of the number of stories and the number of spans on the failure mode of the frame structure of sloping buildings under a large earthquake is analyzed to provide certain reference suggestions for the design of this type of structure.
作者
刘志强
Liu Zhiqiang(Kunming Architectural Design and Research Institute Co.,Ltd.,Kunming Yunnan 650040,China)
出处
《城市建筑》
2021年第30期131-133,共3页
Urbanism and Architecture
关键词
坡地建筑
掉层框架结构
破坏模式
推覆曲线
掉层数
slope building
frame structure with falling stories
failure mode
push-over curve
number of stories falling
