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

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.

Abstract:

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 coldformed thickwalled steel members were proposed for the reference in current revising of related design codes.