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为进一步了解传统风格建筑钢-混凝土组合框架的抗震性能,在1榀缩尺比为1∶2的传统风格建筑钢-混凝土组合框架拟动力试验的基础上,利用SAP 2000软件建立有限元模型,重点分析结构在地震作用下的受力性能和破坏机制。其有限元模拟的位移时程曲线与试验结果较为吻合,塑性铰出现在结构穿插枋和框架柱处,穿插枋在模拟中率先出铰并最终破坏,故在结构设计中应予以重视。在整个有限元模拟过程中,结构的最大层间位移角达到1/48,同时结构的延性系数为3.14,表明传统风格建筑钢-混凝土组合框架具有良好的抗震性能。
In order to further understand the seismic performance of steel-concrete composite frames in traditional style buildings, a finite element model was established using SAP 2000 software on the basis of a pseudo-dynamic test of a steel-concrete composite frame with a traditional scale of 1:2. The stress performance and failure mechanism of structures under earthquakes are mainly analyzed. The displacement time history curve of the finite element simulation is in good agreement with the experimental results. The plastic hinges are present at the structure interspersed flaws and frame posts. The interspersed flaws are first hinged and eventually destroyed in the simulation. Therefore, attention should be paid to the structural design. Throughout the finite element simulation process, the maximum interlayer displacement angle of the structure reached 1/48, and the ductility coefficient of the structure was 3.14, indicating that the traditional style steel-concrete composite frame has good seismic performance.