CONSTRUCTION CONTROL TECHNOLOGY OF XIJIANG LARGE BRIDGE OF NEWLY BUILT NANSHA PORT RAILWAY
The main bridge across the Xijiang River adopts(2 × 57.5+172.5+600+4 × 57.5)m double-tower steel box mixed beam cable-stayed bridge structure.The main beam of the cable-stayed bridge is composed of steel box girder and concrete box girder,and adopts the form of asymmetric mixed beam cable-stayed bridge.The steel box beams in the middle span and closing section of the main bridge are constructed by cantilever assembly,and the other steel box beams and cast-in-place beams are constructed by support cast-in-place.The key control techniques,such as finite element simulation calculation,geometry monitoring,stress monitoring,cable force monitoring and adjustment,are used to ensure the good shape of the bridge.
asymmetryhybrid beamcable-stayed bridgelinear control
万方数据
维普
