功能集成型RC框架结构的损伤机制控制研究

Research on damage mechanism control of functional integrated RC frame structure

为了改善框架结构的层倒塌破坏模式,选择在框架结构中增设局部抗震墙提高结构的抗震性能.建立5个梁-柱-抗震墙子结构模型,通过对模型进行低周往复位移加载,分析结构的损伤分布、极限承载力、延性和耗能能力.结果表明:增设抗震墙可以提高结构的极限承载力和耗能能力,使结构的延性系数满足延性破坏的要求.同时在结构体系中抗震墙与承重构件功能集成或功能分离也能影响结构的抗震性能.

In order to improve the collapse mode of a frame structure, we choose to add a local seismic wall in a frame structure to improve the seismic performance of the frame structure. Five beam-column-seismic wall substructure models were established. Through the low-cycle reciprocal displacement loading to the models, the damage distribution, ultimate bearing capacity, ductility, and energy dissipation capacity of the structure were analyzed. The results show that the addition of the seismic wall can increase the ultimate bearing capacity and energy dissipation capacity of the structure, and make the ductility coefficient of the structure meet the requirements of ductile failure. At the same time, the functional integration or functional separation of the seismic wall and the load-bearing components in the structural system can also affect the seismic performance of the structure.