【摘要】 2013年4月20日四川芦山7.0级地震给震区建筑结构造成了严重破坏。本文选择不同烈度区典型震害的钢筋混凝土框架结构,介绍了结构梁柱、填充墙、其他附属构件及地基等的破坏特点,分析了各类震害特征与破坏机理。结果显示,钢筋混凝土框架结构在本次地震中表现出了良好的抗震性能,除了极震区个别建筑框架柱发生了结构性破坏外,地震区绝大部分均为非结构性破坏,如填充墙及其他附属构件破坏,且大部分破坏不影响结构框架承重体系继续使用。最后针对该次地震中钢筋混凝土框架结构存在的主要问题,给出了一些钢筋混凝土框架结构设计与建设改进建议。更多还原

【Abstract】 The buildings were damaged seriously in the Lushan Earthquake with magnitude 7.0,April 20,2013.Dozens of typical reinforced concrete frame buildings were selected to analyze the damage characteristics and mechanism of bearing frame,infill walls and other accessory components.The results show that the reinforced concrete frame structures had high seismic capacity,and the non-structural members,such as infill walls,were damaged more seriously than the bearing frame system.In fact,only small number of buildings was damaged at the column ends.According to the investigation and analysis results,some suggestions were provided to improve the seismic design and construction of reinforced concrete frame structures.更多还原