Study on Design of Large Cantilever Cast-in-place Prestressed Concrete Continuous Box Girder Beam
Due to its advantages such as good overall performance,high structural stiffness,high torsional performance,and good landscape function,prestressed concrete continuous beam bridges are commonly used as structural forms for urban elevated bridges.At present,the traf-fic flow of urban elevated bridges is large,the bridge deck is wide,and the crossing conditions are usually limited.Usually,only two supports can be arranged with small spacing between them.The distance between the bridge supports and the cantilever end is large.In order to ensure the safety and reliability of lateral stress,separate design and calculation of the crossbeam are required.Based on engineering practice,the de-sign and calculation analysis of the beam configuration and cross-sectional dimensions of wide bridge deck and large cantilever beams were car-ried out,providing a certain theoretical reference for the design of prestressed concrete box girder beams with wide bridge deck and large canti-lever.
Prestressed concreteBox girderCrossbeamFinite element analysis
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