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利用地铁上部空间进行商业开发,在国外已有不少成功案例,国内也已有相关的工程经验,但是利用同时包含地铁、铁路在内的大型交通枢纽工程的上部空间进行二次开发尚属首次。为满足地铁及铁路的限界要求,并同时解决平台上下刚度突变问题,考虑在平台上设置由水平滑移支座+普通橡胶支座+速度型粘滞阻尼器组成的组合隔震层,形成底部框架+隔震层+上部剪力墙的结构体系,通过对比隔震前后结构的地震反应,证明了这种结构体系的抗震有效性,为类似工程的结构体系选择提供参考方案。
It is the first time that commercial development has been carried out in the upper space of the subway. There are quite a few successful cases abroad and related domestic engineering experience. However, it is the first time for the secondary development in the upper space of a major transportation hub project that includes both metros and railways . In order to meet the requirements of the subway and the railway, and to solve the sudden change of the upper and lower stiffness of the platform simultaneously, a combination of a horizontal shock bearing, a common rubber bearing and a speed-type viscous damper is proposed to form a bottom of the platform Frame + isolation layer + upper shear wall structure. By comparing the seismic response of structures before and after isolation, the seismic effectiveness of this kind of structure system is proved, which provides a reference scheme for the selection of structural system for similar projects.