Installation and Construction Techniques for Elevated Corridors in High-Rise Buildings
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摘要: 目前随着施工建造技术的进步,高层建筑的结构形式日趋多样化,其中高位连廊、高空悬挑等结构的应用也日益广泛。高位连廊的安装施工常采用整体提升的施工方案,可以大大降低安装施工难度。整体提升对结构刚度和施工技术有着较高要求,准确计算预拼装时的变形预调值和精确控制施工整体提升过程中的提升力是顺利施工的关键。基于深圳自贸中心项目工程建设,研究了高位连廊整体提升安装施工技术,采用有限元数值分析的方法对施工过程中的连廊变形进行了施工模拟,实现了对"形变"和"力变"的精准控制。同时,研究了整体提升起吊方案的可行性,为整体提升方案的确定提供了重要依据,对后续类似高位连廊的整体提升模拟计算具有一定的借鉴和启发意义。最后,讨论了整体提升的一体化模拟方法、侧向刚度、成型内力等施工过程中的关键问题,对设计和施工一体化分析具有一定的指导作用。Abstract: With the advancement of construction technology, the structural forms of high-rise buildings are becoming increasingly diverse. Among them, the applications of elevated corridors and cantilevered structures are also becoming more widespread. The installation construction of elevated corridors often adopts an integral lifting construction scheme, which can significantly reduce the difficulty of installation construction. Integral lifting requires high structural stiffness and advanced construction techniques. Accurate calculation of the deformation pre-adjustment value during pre-assembly and precise control of the lifting force during the entire elevation process are crucial for smooth construction. Based on the engineering research of the Shenzhen Free Trade Center project, the installation and construction techniques of elevated corridors with integral lifting were investigated. The finite element numerical analysis method was utilized to simulate the corridor deformation throughout the construction process, achieving precise control over both "deformation" and "force variation." Additionally, the study examined various lifting schemes for integral lifting, analyzing the lifting forces associated with different approaches, providing valuable references for determining the optimal integral lifting scheme. The findings of the research had significant implications for subsequent simulations and calculations of integral lifting for similar elevated corridor structures. Finally, the paper discussed the key problems in the construction process, such as the integrated simulation method of the lifting, lateral stiffness, forming internal force, etc., which could provide a reference for the design and construction.
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