Study on Design of Girder Erection Conversion Scheme for Long-Distance Tunnel
This article is based on the Zhongwei-Lanzhou Passenger Dedicated Line project.In order to solve the problem of long-distance tunnel girder erection,through in-depth research and analysis of on-site construction conditions,construction period,and tooling configuration,a transport and erection integrated machine is used to pass through the tunnel for erecting girder.This solves the problem of the inability to use the self owned large transport and erection equipment due to the construction site,narrow roads,steep slopes,and sharp bends at the entrance and exit of the tunnel.The relay girder-transporting method of two self owned transporter+transport and erection integrated machines is adopted to solve the problem of long transportation distance and low efficiency of box girder transportation.The self owned SXJ900 bridge erecting machine is transformed into a lifting machine,which solves the cost of installing and dismantling a 900 t lifting machine,no site for operation,and entering and exiting the site.The tough problem is solved by organically combining transporter,bridge erecting machines,and transport and erection integrated machines,which successfully settles the problem of long-distance tunnel girder erection,and provides reference for the girder erection of similar engineering in the future.
high-speed railwayerecting girderinverted girderbridge erecting machinetransport and erection integrated machine
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