冷弯中厚壁轴压方矩形钢管柱抗震可靠度分析  

Seismic Reliability Analysis of Axially Compressed Cold-Formed Medium Thick-Walled Square and Rectangular Steel Tube Columns

作　　者：李功文[1] 李元齐[1,2] LI Gongwen;LI Yuanqi(College of Civil Engineering,Tongji University,Shanghai 200092,China;State Key Laboratory of Disaster Reduction in Civil Engineering,Tongji University,Shanghai 200092,China)

机构地区：[1]同济大学土木工程学院,上海200092 [2]同济大学土木工程防灾国家重点实验室,上海200092

出　　处：《同济大学学报（自然科学版）》2018年第8期1003-1010,共8页Journal of Tongji University:Natural Science

基　　金：国家自然科学基金重点项目(51538002)

摘　　要：收集了Q235和Q345冷弯厚壁方矩管的材料不定性、几何不定性、稳定设计计算模式不定性以及短柱的承载力数据.在此基础上运用一次二阶矩法进行了抗震及非抗震设计可靠度分析.最终给出Q235和Q345冷弯厚壁型钢构件强度和稳定设计抗力分项系数以及承载力抗震调整系数建议值,为相关技术标准的修编提供了依据.Data of material property uncertainty,geometrical uncertainty,calculation model uncertainty for overall stability design and load bearing capacity of short columns for Q235,Q345 cold-formed thick-walled square and rectangular steel tubes were collected and on this basis,seismic and non-seismic design reliability analysis was conducted through the first-order second-moment method.Finally,the resistance partial factor and seismic adjustment coefficient of bearing capacity under strength and overall stability design for Q235 and Q345 coldformed thick-walled steel members were proposed for the reference in current revising of related design codes.

关 键 词：冷弯厚壁型钢 抗震设计 设计可靠度分析 抗力分项系数 承载力抗震调整系数 

分 类 号：TU392.1[建筑科学—结构工程]