Synchronous Construction Technology and Climbing Arch Crane Design for the Arch and Beam of Muping Xiangjiang Large Bridge
Due to on-site constraints,the erection of steel truss arch bridges often encounters the challenge of taking beams at a 90° angle on the side beam section.If a conventional construction approach is adopted,it is usually difficult to balance the construction safety and economy of the structure.This paper comprehensively analyzes the feasibility of three steel beam erection schemes from the five aspects of on-site conditions with Muping Xiangjiang Large Bridge as the project background,installation difficulty,erection construction method,economy,hydrogeological conditions.Three feasible steel beam erection schemes are evaluated,and a construction technique involving the use of a climbing arch full-rotation crane for the simultaneous construction of the arch and beam is proposed.Finite element analysis is employed to assess the safety of the climbing arch full-rotation crane under various unfavorable conditions.The results show that the simultaneous construction scheme for the arch and beam using the climbing arch full-rotation crane is simple,cost-effective,and which exhibits high safety performance.It ensures the smooth construction of the bridge.
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