The Bridge Type Scheme Design of Existing Bridge across Railway Demolition and Reconstruction in a Project
An existing bridge across Wuhan-Danjiangkou Railway was built in March 1989.The cross-railway hole is 20-meter hollow slab,and the bridge holes on both sides are 20-meter reinforced concrete T-beams.It needs to be demolished and rebuilt.According to the current conditions of the site topography and ground objects,under the conditions of ensuring the continuous operation and operation safety of the bridge and railway,three bridge type schemes are proposed:swivel T-structure,incremental launching through rigid binder and rigid arch,and hoisting prestressed reinforced concrete small box girder.According to the known conditions,this paper focuses on the analysis of the advantages and disadvantages of three schemes,so that the construction of the bridge across railway can not only meet the functional requirements,but also be safe,economical and practical.
NETL
NSTL
万方数据
维普
