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针对不对称大底板多塔楼隔震结构体系,通过建立地震响应的动力分析简化模型,推导出不对称大底板多塔楼隔震结构体系地震作用下的运动方程。对一实际的不对称大底板多塔楼隔震结构进行地震响应仿真分析,探讨塔楼质量偏心率和塔楼质量比对结构周期比、位移比和层剪力比的影响。结果显示,不对称大底板多塔楼隔震结构扭转角主要由隔震层产生;与不隔震结构相比,不对称大底板多塔楼隔震体系的扭转角减小,可取得较好的减震效果;塔楼与底板的位置分布和质量分布会影响体系的扭转效应和减震效果,应尽量使塔楼的质心与底板质心重合,塔楼质量分布均匀,以减小结构的扭转效应,提高减震效果。
Aiming at the asymmetrical large floor multi-tower isolated structure system, the dynamic equation under the seismic action of asymmetrical large floor multi-tower isolated structure system is deduced by establishing the dynamic model of seismic response. The seismic response simulation analysis of an actual asymmetric large floor multi-tower seismic isolation structure is carried out to investigate the influence of tower mass eccentricity and tower mass ratio on the structural period ratio, displacement ratio and layer shear ratio. The results show that the torsion angle of multi-tower isolation structure with asymmetric large bottom plate is mainly produced by isolation layer. Compared with non-isolation structure, the torsion angle of multi-tower isolation system with asymmetric large bottom plate can be reduced, Seismic effect; the location of the tower and floor distribution and quality distribution will affect the system of torsional and damping effect, should try to make the center of gravity of the tower coincides with the center of the floor, the tower mass distribution, in order to reduce the structure of the torsional effect and improve the shock absorption effect.