带型钢混凝土转换层结构地震易损性分析  

Seismic fragility analysis of steel reinforced concrete transfer story structure

作　　者：钟岱辉[1] 高家军 姜来峰 牟国林 ZHONG Daihui;GAO Jiajun;JIANG Laifeng;MU Guolin(School of Civil Engineering,Shandong Jianzhu University,Jinan 250101,China;School of Resources and Safety Engineering,Chongqing University,Chongqing 400044,China;Zhuofang Drilling Engineering Group Co.,Ltd.,Chongqing 400700,China;Sinochem Hongrun Petrochemical Co.,Ltd.,Weifang 262513,China)

机构地区：[1]山东建筑大学土木工程学院,山东济南250101 [2]重庆大学资源与安全学院,重庆400044 [3]倬方钻探工程集团有限责任公司,重庆400700 [4]中化弘润石油化工有限公司,山东潍坊262513

出　　处：《山东建筑大学学报》2023年第5期25-32,57,共9页Journal of Shandong Jianzhu University

摘　　要：转换层结构的地震易损性分析可为其他复杂结构的定量分析提供参考依据。以实际工程为背景,定义适用于该结构的极限状态和损伤指标,并基于增量动力分析的结果,分析结构的地震易损性,从结构失效概率的角度评估结构的抗震性能。借助抗震性能设计软件(Performance-Based Seismic Design,PBSD),分析结构构件的损伤及位置分布,以此作为结构性能评估的补充与完善。结果表明:多遇地震作用下的结构可能会发生较大变形,但不会损坏,且保持正常使用状态的概率为62.17%,保持其他状态的概率约为100%;基本设防地震作用下结构会发生损坏,但其处于可控范围,保持修复后可使用状态的概率为92.16%;罕遇地震作用下结构有90.15%概率保持生命安全状态,结构抗震能力储备充足。从构件损坏的程度上看,罕遇地震下构件损伤主要出现在梁上,剪力墙损伤比例较小,且均为轻微损坏,说明结构抗震性能良好。The seismic fragility analysis and research of the transfer story structure provides a reference for the quantitative analysis of other complex structures.This study,grounded in the actual engineering scenarios,firstly defines limit states and dynamic index applicable to the structure.Then,leveraging the results of incremental dynamic analysis,the study conducts seismic fragility analysis of the structure and evaluates its seismic performance in terms of structural failure probability.Furthermore,PBSD(Performance-Based Seismic Design)is employed to analyze damage patterns and component distribution within the structure,complementing and enhancing structural performance evaluations.The results show that the structure may experience substantial deformation under frequent earthquakes,but remain undamaged.The probability of the structure maintaining the normal functionality stands at 62.17%,and the probability of others is about 100%.The structure will be damaged under the impact of a basic fortification earthquake,but the damage is within the controllable range,and the probability of restoring to a usable state is 92.16%.In a event of a rare earthquake,the structure boasts a 90.15%probability of maintaining a life-safe state,underscoring its robust seismic capacity reserves.From the perspective of the damage degree of component,it can be seen that during rare earthquakes,beam damage prevails with shear wall damage being minimal and generally characterized as slight,which indicates the structure’s commendable seismic performance.

关 键 词：转换层 增量动力分析 地震易损性分析 抗震性能评估 

分 类 号：TU375[建筑科学—结构工程]