Installation and Connection Mode of Stiffening Beam Segment of Steel Truss Suspension Bridge
During the construction of long-span steel truss suspension bridges,the main girder can be connected in segment-by-segment articulated connection method and rigid-articulated connection combination method.Taking a Yangtze River Highway Bridge in Hubei Province as an example,this paper established the plane calculation model of the full bridge using the Bridge Design and Construction Monitoring System BDCMS to simulate the above two connection methods of the main girder in construction.From the comprehensive analysis of chord member internal forces and line shape of the stiffening beam,this paper finds that the rigid-articulated connection combination method is more appropriate in the construction.In addition,this paper researched the opening width of the temporary hinge through simulation calculation to obtain the optimal conversion time of articulated and rigid connections.
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