钢筋混凝土框架结构的延性抗震设计

Seismic ductility design for reinforced concrete framework structure

保证结构的延性是提高建筑抗震性能的重要措施,在地震区的结构都应设计成延性结构.简述了钢筋混凝土框架结构在地震作用下的耗能机理,并结合新的《建筑抗震设计规范》分别对框架结构的梁、柱及节点的延性设计进行探讨,采用轻质高强的填充墙来降低框架柱的轴压比,增加框架柱的配筋等级和数量均可提高框架结构的延性,同时对整个建筑的造价增加不多.

To enhance earthquake-resistance capability of building structure' s ductility is an important measure. In earthquake region, all frameworks should be designed in ductile structure. The energy-consumption's mechanism of reinforced concrete framework structure in the earthquake is briefly stated. Base on the new Code for seismic design of buildings, the ductility of framework structure in the seismic design is discussed. Two measures are put forward to enhance the ductility of framework:adopting light and high-strength filler wall,increasing the steel bar's grade and area of the column, with little influence on the cost of building.