残余应力对冷弯厚壁压弯构件抗震性能影响分析

The influence of residual stress on the seismic performance of cold-formed thick-walled compression-bending members

冷弯型钢构件因其成本效益和多功能性而在结构工程中得到广泛应用。然而,由制造过程中产生的残余应力可能会显著影响其在地震荷载下的行为。因此,通过数值分析研究残余应力对冷弯厚壁压弯构件抗震性能的影响。研究结果表明,残余应力会影响构件的峰值强度、延性和能量耗散能力,从而影响其整体抗震响应。研究结果为改进冷弯型钢在地震作用下的设计规范和指南提供了参考。

Cold-formed steel members are widely used in structural engineering because of their cost-effectiveness and versatility.However,residual stresses generated by the manufacturing process may significantly affect its behavior under seismic loading.In this paper,the effect of residual stress on the seismic performance of cold-formed thick-walled compression-bending members is studied by numerical analysis.The results of the study show that residual stresses affect the peak strength,ductility,and energy dissipation capabilities of members,thereby affecting their overall seismic response.The research results provide a reference for improving design codes and guidelines for cold-formed steel under earthquake action.