既有单跨钢筋混凝土框架结构抗震性能评估

Seismic performance evaluation of existing single-span reinforced concrete frame structure

介绍并分析了采用多遇地震作用下的结构抗震验算、设防烈度地震作用下的抗侧力构件屈服状况验算和罕遇地震作用下的弹塑性变形验算等来综合评价既有单跨钢筋混凝土框架结构的抗震性能。分析结果表明,当满足所在地区设防烈度地震作用下抗侧力构件不屈服和罕遇地震作用下的弹塑性变形验算要求时,可评定既有单跨框架结构抗震性能够满足抗震设防的要求。

The seismic performance of the existing single-span reinforced concrete frame structure was comprehensively evaluated by introducing and analyzing the seismic checking calculation under the action of frequently earthquakes,the checking calculation of the yield condition of the lateral force members under the action of the fortification earthquakes and the elasto-plastic deformation checking under the action of the rare earthquakes. The analysis results show that the seismic resistance of the existing single-span frame structure can meet the requirements of seismic fortification when the anti-lateral force components are not yielded under fortification earthquakes and the elasto-plastic deformation checking requirements under the rare earthquake action.