【摘要】 为研究配置HRB500高强钢筋的框架结构的经济性与抗震性能，以一栋框架结构为例，在配置HRB400钢筋的结构方案基础上，按钢筋等强度替换的原则，将框架梁与框架柱的纵筋替换为HRB500高强钢筋重新设计，对两个结构方案的钢筋用量和经济性进行了对比，通过动力弹塑性分析研究了两个结构方案的抗震性能，并对两个结构方案的抗震韧性进行了对比分析。结果表明：配置HRB500高强钢筋的框架结构的钢筋用量明显减少，具有较好的经济效益。在设防地震与罕遇地震作用下，替换前后框架结构的层间位移角和楼面加速度基本一致，均满足罕遇地震作用下变形要求。两个结构方案的抗震韧性评价均为一星，说明配置HRB500高强钢筋的框架结构与配置HRB400钢筋的框架结构的抗震性能无显著差异。更多还原

【Abstract】 To study the economic efficiency and seismic performance of frame structures configured with HRB500 high-strength steel reinforcement, a frame structure was taken as an example. Based on the structural design scheme using HRB400 steel reinforcement, the longitudinal steel reinforcement in the frame beams and columns was redesigned by replacing it with HRB500 high-strength steel reinforcement following the principle of equal-strength substitution. The steel reinforcement consumption and economic efficiency of the two structural schemes were compared. The seismic performance of the two schemes was investigated through dynamic elastoplastic analysis, and a comparative analysis of their seismic resilience was conducted. The results indicate that the frame structure configured with HRB500 high-strength steel reinforcement significantly reduces steel consumption, demonstrating favorable economic benefits. Under the action of design-basis earthquakes and rare earthquakes, the inter-story drift angles and floor accelerations of the frame structures before and after the replacement are essentially the same, both meeting the deformation requirements under rare earthquakes. The seismic resilience evaluation of both structural schemes is rated as one star, indicating no significant difference in seismic performance between the frame structure configured with HRB500 high-strength steel reinforcement and the one using HRB400 steel reinforcement.更多还原