摘要
为研究不同框架倾覆弯矩比例的框剪结构抗震性能的差异,按现行中国规范设计了6个框剪结构模型,运用IDARC程序对其进行7度大震下弹塑性时程分析和比较,并进行基于性能的抗震评估。结果表明:按中国规范设计的超过框架结构最大适用高度且在基本振型地震作用下框架倾覆弯矩比例达60%的框剪结构,在7度大震下抗震性能能够得到保证;相对于框架倾覆弯矩比例小于50%的框剪结构,其抗震性能没有明显下降。
In order to study the aseismic capacity differences of frame-shear wall structures with different percentages of overturning moment resisted by frame, three 15-story and three 20- story frame-shear wall structure models are designed according to current Chinese code, and are analyzed under rare earthquake of Intensity VII using IDARC program with nonlinear dynamic procedure, then the results of different models are compared and performance based aseismic capacity evaluations are conducted. It is shown that： for the frame-shear wall structure designed according to current Chinese code, when the height exceeds the maximum applicable height of pure frame structure and the percentage of overturning moment resisted by frame reaches 60%, its seismic performance under rare earthquake of Intensity VII could be assured, and has no obvious decrease compared to that of the frame-shear wall structure of which the percentage of overturning moment resisted by frame is below 50%.
出处
《华南地震》
2009年第2期80-87,共8页
South China Journal of Seismology
关键词
框剪结构
框架倾覆弯矩比例
弹塑性时程分析
基于性能的抗震评估
Frame-shear wall structure
Overturning moment percentage resisted by frame
Nonlinear dynamic procedure
Performance based aseismic capacity evaluation
