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以某实际的框架隔震建筑结构为工程背景,该工程在基础与主体结构之间使用了摩擦摆隔震支座,加入了隔震层后出现过大的位移,从而影响了隔震建筑物的使用。为解决隔震层在地震作用下出现过大位移的问题,考虑隔震层中按照一定的规律加入阻尼器,同时研究了阻尼器在地震作用下的减震率。在SAP2000有限元软件中建立该建筑物的有限元模型,在模型中并考虑阻尼器和摩擦摆隔震支座的加入,并对在隔震层中加入与未加阻尼器的地震响应做了系统的对比研究。研究结果表明,在建筑物的隔震层中加入阻尼器后能有效减少隔震建筑物在地震作用下的刚体位移,同时使隔震建筑物的适用性更强。
Taking an actual frame isolated structure as the engineering background, the project uses a friction pendulum bearing between the foundation and the main structure. After the addition of the seismic isolation layer, excessive displacement occurs, which affects the isolation structure usage of. In order to solve the problem of excessive displacement of the isolation layer under the action of the earthquake, the damper is added according to a certain rule in the isolation layer, and the damping of the damper under earthquake action is studied. The finite element model of the building was established in SAP2000 finite element software. In the model, the addition of dampers and friction pendulum bearings was taken into consideration, and the seismic response of the isolation layer with and without damper was made Systematic comparative study. The results show that adding a damper to the isolation layer of a building can effectively reduce the rigid body displacement of the isolated building under the action of earthquake and at the same time makes the isolation building more applicable.