RESEARCH ON CABLE HOISTING CONSTRUCTION TECHNOLOGY FOR STEEL BOX LATTICE BEAM OF LARGE SPAN MID THROUGH ARCH BRIDGE
The Wushan Daning river bridge project has a dangerous terrain and high construction risks,and there are certain technical difficulties in the hoisting construction of steel box lattice beams.Based on actual bridge construction projects,this study analyzed the key technologies for hoisting steel box lattice beams.Based on the specific construction environment,an overall construction plan for the steel box girder of this bridge has been de-veloped,which involves lifting from the sides of both banks to the middle of the span.For different sections at dif-ferent positions,the lifting methods were adopted,including lifting inside the arch with side spans,lifting with hook replacement inside the arch,lifting outside the arch with pole beams,and lifting with a single hook for the closure section.Solved the engineering difficulties encountered during the lifting process,such as narrow construction sites and high difficulty in lifting construction,ensuring project quality and construction safety,and providing reference for similar projects in the future.
long span bridgesteel box lattice beamcable hoistingarch bridgehoisting construction
NETL
NSTL
万方数据
