Unballasted track bed plate construction method

Abstract

The invention relates to a construction method of the bottom seat plate of the ballastless track, which belongs to a construction process method of tracks. The purpose of the invention is to provide a reliable construction method of the bottom seat plate of the ballastless track on bridges to meet the quality and accuracy requirement of the bottom seat plate of the ballastless track. The construction method comprises the following steps: step one, firstly, the bridge floor is checked and accepted and assessed before planking; secondly, the stakingout connecting line of the bottom seat plate is measured; thirdly, the connection of the fixed bolt is arranged; fourthly, a sliding layer with two cloth and one film is laid on the bridge floor of the box-beam bridge; step two, a hard plastics foam layer is laid on the two ends of the beam slot; step three, a post casting strip connector is installed; step four, firstly, tooth socket welding studs are installed; secondly, bottom seat plate reinforcing bars are installed; step five, bottom seat plate mould plates are installed; step six, the concrete of the bottom seat plate is cast; step seven, the cast post casting strip and the weldingstud tooth socket are fixedly connected, and the connection of the bottom seat plates is completed.

Description

technical field [0001] The invention belongs to a track construction process method, in particular to a construction method for a ballastless track base plate on a bridge. Background technique [0002] The slab ballastless track consists of four parts from top to bottom: track slab, asphalt mortar layer, base plate and sliding layer. In order to meet the structural needs, the rigidity of each part decreases successively from top to bottom, and the base plate adopts C30 with low elastic modulus. RC. [0003] The construction of the base plate of the slab-type ballastless track is the first time in China, and many new technologies have to be applied in the construction, especially the construction process of the base plate in the temporary end stab area is complicated, and there are many processes, and there is a strict construction sequence between the processes. [0004] The above-mentioned ballastless track base plate has the following technical difficulties in constructio...

AI Technical Summary

Problems solved by technology

[0007] 2. High construction precision requirements

[0009] 3. It is difficult to form the base plate of the large super high section

[0011] 4. Large technical management span

[0012] During the construction of the base plate, there are many processes and processes related to structural safety and engineering functions, which must be strictly controlled. Any mistakes in any link will bring unpredictable consequences to the quality of the project.

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