日照市日广中心A塔楼超限高层结构设计

Out-of-code high-rise structural design on tower A of Rizhao Riguang Center

日照市日广中心A塔楼采用钢筋混凝土框架-核心筒结构体系,结构高度178.45m,为B级高度的高层建筑。主要介绍了工程结构特点、结构选型、超限情况、斜柱分析,并提出相应的加强措施。采用PKPM和MIDAS Building两种软件对结构进行了多遇地震作用下的整体计算,并采用弹性时程分析法进行补充验算。采用等效弹性分析法进行了抗震性能化设计,保证主要构件在设防地震和罕遇地震作用下的性能要求。罕遇地震作用下,采用SAUSAGE软件对结构进行动力弹塑性时程分析,保证了结构大震不倒并找到薄弱部位进行加强。分析结果表明,结构具有良好的抗震性能,能够实现"三水准"抗震设防目标。

Tower A of Rizhao Riguang Center adopts reinforced concrete frame-core tube structure system,with a structural height of 178.45 m,which is a high-rise building with a B-level height.The characteristics of engineering structure,structure selection,the out-of-code situation and analysis of inclined columns were mainly introduced,and corresponding strengthening measures were put forward.Two softwares,PKPM and MIDAS Building were used to conduct the elastic calculation under the frequently occurred earthquakes,and the elastic time-history analysis method was used for supplementary calculation.The equivalent elastic analysis method was used to carry out seismic performance design to ensure performance requirements of main components under the action of fortification and rare earthquakes.SAUSAGE software was used to conduct the dynamic elastic-plastic analysis to ensure that the structure does not collapse under rare earthquake and finds the weak parts to strengthen.The analysis results show that the structures has good seismic performance and can achieve the performance-based seismic design goals of"three-level".