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通过15层钢筋混凝土异型柱斜撑框架结构模型的模拟地震振动台试验,研究了斜撑框架结构的自振特性、地震反应时程及频谱特征,并采用空间结构有限元分析程序进行了建模研究和理论计算.计算模型采用空间梁单元与空间板单元,材料特性取实测值.通过模态计算得到结构各阶自振特性值,利用直接积分法计算结构的动力反应.由数值的分析可知,理论计算与试验结果一致.
Based on the simulated earthquake shaking table test of a 15 layer reinforced concrete special-shaped column braced frame structure model, the natural vibration characteristics, seismic response time history, and frequency spectrum characteristics of the braced frame structure were studied. The spatial structure finite element analysis program was used to model the structure. Research and theoretical calculations. The calculation model uses spatial beam elements and space plate elements, and the material properties take actual measured values. Through the modal calculation, the structural self-vibration characteristic values are obtained, and the dynamic response of the structure is calculated by direct integration method. From the numerical analysis, the theoretical calculation is consistent with the experimental results.