Research on Swivel Monitoring Technology for Large-span Bridges Overcrossing Expressways
Based on the structural form and construction characteristics of the large-span continuous beam of the Xiong'an-Beijing Airport Express across Daqing-Guangzhou Expressway,this paper studies the swivel process safety monitoring technology of the large-span continuous beam based on the field test method.The results show that the spherical hinge swivel method has a good effect in the unbalanced weighing test.The unbalanced torque of the swivel bridge is small,and the friction coefficient is less than the design requirement.In the trial and formal swivel process,the test parameters such as vibration,acceleration,support foot displacement at the end of the main beam change gently,and all parameters meet the requirements of relevant specifications,and the swivel process is stable and orderly.
large-span bridgeswivel constructionsafety monitoringweighing test
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