基于受损的某单层轻钢厂房抗震性能分析  

Analysis of seismic performance of a single-storey light steel plant based on damaged

作　　者：丛宇[1] 钟燕 Cong Yu;Zhong Yan(Sichuan Institute of Archaeology Chengdu 610041,China;College of civil engineering and architecture,Southwest University of Science and Technology,Mianyang 621010,China)

机构地区：[1]四川省文物考古研究院,四川成都610041 [2]西南科技大学土木工程与建筑学院,四川绵阳621010

出　　处：《山西建筑》2021年第3期28-31,共4页Shanxi Architecture

基　　金：四川省科技厅科研院所科技成果转化项目(2020JDZH0025)。

摘　　要：某农贸市场单层轻钢厂房由于受外界环境腐蚀,加之年久失修,部分柱底断面开裂,降低了整体结构的承载能力,若有地震发生可能会引起结构连续倒塌。采用有限元软件SAP2000对柱底不同约束状态的工况进行抗震性能数值计算,探讨不同受损结构在遭受7度罕遇地震作用后的柱顶侧移,并对受损结构采用角钢斜向支撑进行加固,得出加固后结构柱顶侧移远小于加固前,且未出现新的塑性铰,结构加固后抗震能力明显提高。Due to the corrosion of the external environment and the disrepair of a single layer light steel factory building in a farmers’market,part of the bottom section of the column is cracked.The bearing capacity of the whole structure is reduced,and if an earthquake occurs,the structure may collapse continuously.By using finite element software SAP2000,the seismic performance of different constrained conditions at the bottom of the column is calculated numerically.The lateral displacement of the column top of different damaged structures after 7 degrees rare earthquake is discussed.The angle steel inclined support is used to reinforce the damaged structure,and it is concluded that the lateral displacement of the top of the structural column is much smaller than that before the reinforcement,and there is no new plastic hinge,and the seismic capacity of the structure is obviously improved after the reinforcement.

关 键 词：单层钢结构厂房 柱顶侧移 破坏模式 抗震性能 

分 类 号：TU392.5[建筑科学—结构工程]