Research on Key Construction Techniques for Giant and Complex Suspension Steel Structures

Research on Key Construction Techniques for Giant and Complex Suspension Steel Structures

The structural form of a project in Shenzhen, Guangdong Province, China adopts a "frame support structure with hanging frame", consisting of two towers. Each tower is composed of a steel core tube and six asymmetric staggered giant hanging steel structure outer frames. For different installation sequences, finite element analysis software is used to simulate and analyze the entire construction process and calculate deformation. Based on the software calculation results, the reverse pre-deviation of the steel structure core tube and the pre-lifting of the suspended outer frame steel structure are achieved to control the deformation of tower construction. Meanwhile, based on comparative analysis of construction simulation calculations, the optimal support unloading scheme is selected to achieve overall deformation control of the structure. After the completion of the project, the deformation values of the structure and key components before and after unloading were basically consistent with theoretical calculations through total station retesting.