高位隔震技术在铁路上盖物业开发中的应用研究

Application Research on High-level Story Isolation Technology in Property Development above Railway

铁路上盖物业开发受到铁路车场的限制,上部结构的竖向构件难以直接贯通落地,为解决大底盘与上部结构刚度突变的问题,提出采用高位层间隔震技术,提高结构的安全性。高位层间隔震体系可以解决铁路上盖物业开发竖向构件无法落地的问题;合理选用隔震层的等效周期和阻尼比,对隔震层支座选型、上部结构的隔震效果以及隔震层在罕遇地震作用下的变形至关重要;为避免结构发生倾覆,控制隔震层隔震支座在罕遇地震作用下的拉应力对整个结构的安全非常重要。

The vertical components of upper structures can not be directly landed to the ground in the property development above railway subject to train running. To solve the stiffness mutation between the large chassis structure and the upper structure,high-level story isolation technology is proposed to improve the safety of the structure. The high-level story isolation system can solve the problem of vertical components landing in the property development above railway. Reasonable equivalent period and damping ratio of isolation floor are very important to the selection of isolation bearing type,the isolation effect of the upper structure and the deformation of the isolation layer under rare earthquake. In order to avoid structure collapse,it is very important to control the tensile stress of the isolation bearing under the action of rare earthquake for the safety of the whole structure.