某医院高层悬挑钢连廊设计及施工模拟

Tall Buildings Cantilever Steel Truss Design and Construction Simulation of a Hospital

某医院两栋住院楼对称布置,建筑总高98.7m,共24层,两栋楼相距40 m,在21~22层用连廊联系两栋楼,两栋楼分别悬挑19.5m钢桁架。本文根据高位悬挑构件的复杂性,有针对性地进行抗震受力分析及设计,并对大型复杂钢结构施工过程的高空安装、卸载全过程进行施工模拟。分析结果及后期实践表明,本工程所采取的设计方法、施工模拟是安全可靠的,也为以后类似项目提供了宝贵经验。

Two 24-storey inpatient buildings,which both have a height of 98. 7 meters,are placed symmetrically with a distance of 40 meters. In order to connect them with steel structural corridors,two 19. 5-meter-long cantilever steel trusses are made respectively between 21 st and 22 nd storeys on each building. In consideration of the complexity of high cantilever components,the seismic performance and component design are carried out based on the analysis of stress mechanism. Moreover,the high altitude installation construction process and overall unloading process are examined. The analysis results and practice prove that the design is safe and construction estimation is reliable. This project provides useful reference to other projects in civil infrastructures.