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通过在巨型框架-次框桁架结构中增加隔震装置,得到巨型框架-次框桁架结构隔震减震体系。采用ANSYS有限元程序对该隔震减震体系进行了隔震减震动力时程计算,得到该结构体系在多条地震波作用下的地震响应。计算结果表明,巨型框架-次框桁架结构隔震减震体系是一种抗震性能良好的结构体系,可改善巨型结构的受力,具有优良的抗震性能:主、次框架顶点位移相对于巨型框架-次框桁架结构的顶点位移明显减小,主框架位移最大减少约47%,次框架最大减少约64%;主框架地震内力最大值响应低于巨型框架-次框桁架结构,剪力减少约33%,弯矩减少约34%。计算结果对巨型结构的抗震设计有较大的参考价值。
By adding the isolation device in the mega-frame-sub-frame truss structure, the mega-frame-sub frame-framed seismic isolation system is obtained. ANSYS finite element program was used to calculate the dynamic time-history of the isolated shock-absorbing system and the seismic response of the system under the action of multiple seismic waves. The calculation results show that the mega frame-frame-framed seismic isolation system is a kind of structural system with good anti-seismic performance, which can improve the force of the mega structure and has excellent seismic performance. The displacement of the apexes of the main frame and the sub-frame relative to the mega frame - the displacement of the sub-frame truss structure significantly reduces the displacement of the main frame, the maximum displacement of the main frame is reduced by about 47%, the maximum reduction of the sub-frame is about 64%; the maximum internal force response of the main frame is lower than that of the mega-frame truss structure, 33%, bending moment reduced by 34%. The calculation results have great reference value for the seismic design of huge structure.