砖填充墙钢筋砼框架的抗震优化设计

本文在分析总结国内外关于填充墙框架抗侧力性能资料的基础上,提出采用“等效斜撑框架模型”对砖填充墙钢筋砼框架进行抗震设计,并用可行方向法对此类结构进行抗震优化设计,编制了相应的计算机程序IFOSD-88(Fortran77),对于一般多层填充墙框架结构,经2～3次迭代即可获得稳定的结果。文末给出一个工程设计实例,计算结果表明,与现行设计方法相比,工程造价可降低8％左右。

Optimization Design of Seismic Resistant RC Frame with Brick Masonry Infill Walls

In this paper, on the basis of analyzing and summarizing main references about infilled frame's behaviours of resistanting lateral loads, a modle called as "equivalent bracing frame" is advanced for designing seismic resistant RC frame with brick masonry filler walls. And the feasible direction method is employed to obtain an optimum design of seismic resistant frame. The corresponding microcomputer program IFOSD-88 ( Fortran 77 ) is developed. For a common multistory infilled frame, a stable result will be achieved for 2 - 3 iterations. At the end of this paper, a practical example is given. The computed results show that the cost of the structure will be reduced about 8 % comparing with that of existing structures.