Research on Scheme for Temporary Support and Upper Beam Support of Portal Bridge Pylon
In order to ensure the safety and inclination to meet the requirements in the construction of the portal leaning bridge pylon,the temporary support and upper beam support schemes for the pylon construction of a super-large-span suspension bridge are analyzed and compared.A construction scheme with the safe stress and reasonable economy is proposed,and its relative stress is analyzed.The research shows that the asynchronous construction of the upper beam and pylon can improve the construction efficiency and simplify the formwork system.For the leaning pylon without portal structure,it is required to apply the temporary support and the active horizontal force to ensure the stress and alignment of the pylon.The separated triangular bracket scheme is adopted for the upper beam formwork system,which is convenient for construction,economical,applicable,safe and reliable,and provides the relevant experience for the construction of similar leaning pylons.
portal leaning bridge pylonasynchronous constructiontemporary support of pylonactive horizontal forceupper beam support
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