A Construction Technology of Turnout Pier with Accurate Control of Top Surface Elevation

Abstract

The invention discloses a turnout buttress construction process capable of accurately controlling the top face elevation. The process includes the steps that multiple supporting legs are fixed to the bottom face of a foundation, wherein the top end of each supporting leg is provided with a height adjusting device; a foundation board is fixed to height adjusting rods of the supporting legs; a concrete pouring formwork is installed to conduct early concrete pouring operation; after early concrete pouring and curing are finished, the actual top face elevation of the height adjusting rod of each supporting leg is measured, and the height of the height adjusting rod of each supporting leg is adjusted, so that the top face elevation of the height adjusting rod of each supporting leg reaches the design elevation, and therefore it is guaranteed that the elevation of the foundation board reaches the design elevation; and concrete is poured into grouting holes in the foundation board, concrete pouring and fixing of the foundation board are finished, and construction of a turnout buttress is finished. The invention further discloses the corresponding turnout buttress. By the adoption of the process, the top face elevation of the buttress can be accurately adjusted and controlled, and therefore the top face elevation of the poured and molded buttress is more accurate.

Description

technical field [0001] The invention belongs to the technical field of medium and low-speed maglev rail transit, and in particular relates to a construction technique of a turnout support pier. Background technique [0002] Turnout is a line connection device used in rail transit to transfer rolling stock from one track to another. It is usually laid in the throat area of ​​a station or at the intersection of two lines. The turnouts of medium and low speed maglev rail transit usually include turnout beams, stacking beams, trolleys, beam upper guide rails, driving devices, locking devices, movable end guide rails, and electrical control systems. When the train needs to change lanes, through the control of the electrical system, The locking device is unlocked, and the turnout beam moves from one track to the other under the action of the driving device. After the track at the movable end is flush with the track on the stacking beam, the locking device locks to complete the swi...

AI Technical Summary

Problems solved by technology

The above process pours the concrete into the prefabricated formwork at one time to form the buttress. Although the process is simple, the height of the foundation slab cannot be controlled during the pouring process, and the error or precision control method caused during the construction process is difficult to meet the requirements. On the one hand, the height of the top surface of the buttress prepared in this way often has a large error, which cannot fully match the design requirements. On the other hand, more importantly, the height of the top surface cannot be adjusted accurately, so that the F track The rail surface elevation error is large, which affects the stability and smoothness of the line

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