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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。
In this paper, based on the analysis of domestic and international data on the lateral resistance of infilled wall frames, an “equivalent bracing frame model” is proposed to apply seismic design to the reinforced concrete frame of a brick infilled wall, and a feasible direction method is applied to this type of structure to resist earthquakes. Optimized design, and compiled the corresponding computer program IFOSD-88 (Fortran77), for the general multi-layer infill wall frame structure, through 2 to 3 iterations to get stable results. At the end of the paper, an engineering design example is given. The calculation results show that compared with the current design method, the project cost can be reduced by about 8%.