Key Construction Technology of Curved Grid Structures on the North and South Sides of Guangzhou-Shanwei High-speed Railway Xintang Station Building
The roof on the north and south sides of Guangzhou-Shanwei High-speed Railway Xintang Station building adopts curved grid structure,and the construction accuracy is high.In view of this,the comparison and selection of construction schemes are carried out,and the finite element analysis model is established by MIDAS Gen to simulate the whole process of construction,the stress and deformation response of components and connections during block hoisting and unloading of support bed-jig are analyzed,as well as the influence of temperature stress caused by day and night alternation in construction process on the structure.The analysis results show that the block hoisting construction method overcomes the limitation of narrow site,and the construction efficiency and assembly quality are high,the displacement and stress of the grid under different working conditions meet the requirements of the current national norms.The equal displacement unloading method should be adopted for the unloading of the support bed-jig,and the adverse effect of temperature stress on the structure should be considered in the construction process.
station buildingsroofsgridshoistsbed-jigunloadingsimulationtemperature effect
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