Comparison and Selection of Construction Technology Schemes for Double Tower Cable-Stayed Bridges Without Back Cables
Taking the Weihe River Bridge as the engineering background,and combines the construction environment and structural characteristics of the steel inclined tower of the main bridge to demonstrate and analyze the con-struction plan of the main tower.The main tower is divided into twenty-three sections,and the construction of the main tower is carried out quickly using a segmented lifting scheme.Through finite element simulation anal-ysis of different construction schemes,the stress at the tower root and the maximum deformation of the tower under the key construction processes of the cantilever assembly,bracket assembly,and synchronous installa-tion of partial cable-stayed cable schemesare obtained.It is found that the stress at the root and deformation at the top of the main tower in the synchronous tension cable scheme are significantly reduced compared to the non support method,and compared to the support method scheme,the deformation in all directions except for the Y direction is reduced.
cable stayed bridge without back cablesteel main towercantilever assemblybracket assemblysynchro-nous installation
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