9度区某高层酒店隔震设计及经济性分析

Isolation design and economy analysis for a high-rise hotel building in the seismic region of 9-level intensity

位于设防烈度9度的盛世建昌酒店结构采用框架-核心筒结构体系,若采用传统的抗震设计方法,难以控制结构位移,且会造成构件截面过大。故采用基础隔震技术,在结构基础设置带有铅芯叠层橡胶支座的隔震层。设计中使用了PKPM软件进行上部结构设计,采用ETABS软件进行隔震结构时程分析,得到了水平向减震系数,并进行了大震下验算以及抗风验算。通过隔震方案与非隔震方案的直接建设费用对比,对采用隔震方案的经济性做了简要分析。研究结果表明,进行隔震设计后的结构,构件截面相对减小,增加了商业使用面积,减小了上部结构的设计难度,并一定程度上节约了工程造价。

Located in the seismic region of 9-level precautionary intensity,Sheng Shi Jian Chang Hotel adopts the structural system of frame-corewall. If the traditional seismic design method is adopted, it is difficult to control structure displacement,and can cause too large component cross section. Therefore,the base isolation technology was adopted to set the isolation layer with lead core laminated rubber bearing at the structural base. PKPM software was used to design the upper structure and ETABS program was used for time-history analysis on the isolation structure to get the horizontal seismic reduction coefficient,and the check calculations under the rare earthquake and the wind were conducted. Through direct construction cost comparison between the isolation scheme and the non-isolation scheme,a brief analysis was made on economy of isolation scheme. The research results show that the structure with isolation design can reduce component cross section relatively,increase business use area,reduce the design difficulty of the upper structure,and save the project cost to a certain extent.