【摘要】 广泛应用于大型公共建筑中的双层索系支承玻璃幕墙结构是一种新型结构形式。针对这种结构的研究,以往大多侧重于其抗风性能,而对于其抗震性能的研究较少。针对双层索系支承幕墙结构的特点,构造非线性单质点体系,利用多条最不利地震动记录,采用时程分析法计算该类结构在小震、中震和大震下的加速度反应谱。在此基础上,经过统计、平滑处理,得到适用于双层索系支承玻璃幕墙结构抗震设计的设计地震反应谱和地震影响系数。算例分析表明,采用该反应谱所得到的结构地震响应值与时程分析结果较为接近。更多还原

【Abstract】 Cable-truss-supported glass curtain walls are a new type of structures,widely used in large public constructions.Researches have been mainly focused on wind resisting of those structures,while the researches on seismism resisting are little.The method for constructing nonlinear single degree of freedom(SDOF) was proposed.The nonlinear acceleration spectra were calculated under given conditions and different seismic intensities through time-history analysis method using many severest ground motion records.The acceleration response spectrums,average acceleration response spectra and statistic smoothing design aseismic response spectra were presented.Through an illustration, the results of nonlinear response spectrum method are closed to those of timehistory method.更多还原