【摘要】 以某长度为120m的双层柱面网壳工程为例,采用位移输入模型,对其进行多点输入和一致输入下的纵向地震反应分析,分别从纵向杆件、横向杆件和腹杆探讨该结构的地震响应规律,并通过改变模型长度研究了不同部位杆件的多点输入影响系数,得出仅考虑纵向地震作用时,对于文中算例当长度达到60m时应考虑多点地震输入进行设计的结论。更多还原

【Abstract】 Taking a length of 120 mdouble-layer cylindrical latticed shell as an example,and using displacement input model,the seismic response analysis under multiple-support excitation and single excitation was carried out.The seismic response of the structure was investigated by the vertical bars,horizontal bars and belly bars.The influencing index of multiple-support excitation of different bars was investigated by changing the length of the model.The conclusion was worked out that multiple-support excitation should be used when the length of the model reaches 60 m.更多还原