配置HRB500高强钢筋框架与框剪结构的抗震性能分析

Seismic performance analysis of frame and frame-shear wall structures using HRB500 high-strength rebar

对配置HRB500高强钢筋作为受力钢筋的框架与框剪结构体系的抗震性能进行了分析。应用EPDA软件对采用HRB500高强钢筋代替HRB400高强钢筋的若干工程实例进行建模和弹塑性时程分析。对于配置HRB500高强钢筋的结构,在满足轴压比、构造要求及常遇地震作用时的变形要求等条件下,结构在罕遇地震作用下的最大层间位移角均小于规范要求,满足罕遇地震作用下的变形要求,达到了"大震不倒"的第三水准抗震设防目标。分析结果可为使用HRB500高强钢筋的结构的安全性提供数据支持和技术依靠。

The seismic performances of frame and frame-shear wall structural systems using HRB500 high-strength rebar as mechanical reinforcement were researched. EPDA software was applied to carry out the structure modeling and elasticplastic time-history analysis of several engineering projects using HRB500 high-strength rebar instead of HRB400 rebar.The structure using HRB500 high-strength rebar satisfied the requirements of axial compression ratio,structural details and deformation requirement under the frequent earthquake condition. Considering the largest interlayer displacement angle under the rare earthquake fulfilling code requirement,the structure using HRB500 high-strength rebar satisfied the deformation requirement under the rare earthquake condition,and can achieve the third level seismic fortification goal of ″not collapse under the rare earthquake″. The analyses results can provide data support and technical support for the safety of the structure using HRB500 high-strength rebar.