楼房仓在地震荷载作用下的易损性分析  

Vulnerability Analysis of the Grain Multi-storied Warehouse Under Earthquake Load

作　　者：谷智炜 柳春光[1,2] GU Zhiwei;LIU Chunguang(State Key Laboratory of Coastal and Offshore Engineering,Dalian University of Technology,Dalian,Liaoning 116024,China;Institute of Earthquake Engineering,Faculty of Infrastructure Engineering,Dalian University of Technology,Dalian,Liaoning 116024,China)

机构地区：[1]大连理工大学海岸与近海工程国家重点实验室,辽宁大连116024 [2]大连理工大学建设工程学部水利工程学院工程抗震研究所,辽宁大连116024

出　　处：《水利与建筑工程学报》2022年第2期209-215,共7页Journal of Water Resources and Architectural Engineering

基　　金：国家自然科学基金重点项目(51738007)

摘　　要：楼房仓为提高土地利用率和储粮效果起到了重要作用,散装粮食楼房仓是一种具有很好推广价值的储粮仓型。然而由于粮食对楼房仓仓壁的侧压力作用,会对其结构性能提出许多新的要求,因此针对楼房仓的地震性能研究是很有必要的。文章以散装楼房仓为背景,通过ANSYS建立了一个满仓粮食的三层框架结构。选取地面峰值加速度和结构最大层间位移角作为指标,对楼房仓进行基于增量动力分析法(IDA)的地震易损性分析,最后得出易损性曲线。结果表明,在不同地震峰值加速度下,结构会依不同的概率达到相应的性能水准,综合概率曲线分析,满仓粮食下的楼房仓的抗震性能是满足要求的;针对散装楼房仓的IDA分析,可给出散装楼房仓地震损伤风险的定量评价结果,具有指导工程应用的意义。The grain multi-storied warehouse plays an important role in improving land utilization and grain storage effect.Bulk grain multi-storied warehouses are a new type of grain storage silo with good promotion value.However,due to the pressure of grain on the wall of silo,many new problems will be raised on its structural performance.There-fore,it is necessary to analyze the seismic performance research of the multi-storied warehouse full of grain.This paper takes bulk grain multi-storied warehouses as an example,and establishes a frame structure model of three-storey grain warehouses through ANSYS.The peak ground acceleration and the maximum interstory drift ratio are selected as indi-cators,the seismic vulnerability analysis based on the incremental dynamic analysis(IDA)method is carried out on the frame construction full of grain,and finally the vulnerability curves of structures is drawn.The results show that the multi-storied warehouses will reach the corresponding performance level according to different probabilities.Compre-hensive probability curve analysis shows that the seismic performance of the multi-storied warehouse full of grain is sat-isfactory.This study shows that IDA method can give quantified result of the damage risk of grain multi-storied ware-house under seismic action,which has the significance of guiding the engineering application.

关 键 词：ANSYS 楼房仓 增量动力分析法(IDA) 地震易损性 

分 类 号：TU249[建筑科学—建筑设计及理论]