Existing line D beam overall longitudinally-moving construction method

Abstract

The invention discloses an existing line D beam overall longitudinally-moving construction method. The lifting height of a D beam is calculated according to field D beam high-order arrangement, head blocks are placed on an existing line, a steel sleeper is placed on each head block, the steel sleepers are installed, upper brackets are connected, after the D beam is lifted in place, gaps between the steel sleepers above the head blocks and the head blocks are plugged through wooden footplates, wooden edges are tightly punched, the D beam is longitudinally moved to an existing line reinforced position, a jack falls back, the D beam falls to a required position, the head blocks and the steel sleepers above the line are removed, and the D beam is connected and fastened. By the adoption of the construction method, the D beam can be quickly and longitudinally moved, blocking key points and construction procedures are reduced, instability and the easy-to-topple risk in the D beam moving process are reduced, a contact net does not need to be powered off, the railway transport capacity is greatly released, station track limitation is avoided, the blocking key points are reduced, and construction time is saved.

Description

technical field [0001] The invention belongs to the field of railway construction, and in particular relates to a construction method for integral longitudinal movement of D beams on the main line. Background technique [0002] In the double-hole prefabricated D-beam reinforcement construction of the railway frame structure, according to the design requirements, D-shaped beams are used to reinforce the line. Under the condition of not interrupting the railway traffic, the traditional construction method needs to use the large block of the slide rail to transport the D-beam vertically and horizontally. To the reinforcement position, the construction process is cumbersome, and the construction time for the "skylight point" is short, and the center of gravity of the monolithic girder of the D-shaped beam is high, and the bottom surface is narrow, so it is easy to overturn during the movement. There are direct safety hazards and risks in the disassembly and assembly construction ...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a construction method for the overall longitudinal movement of D beams on this line, aiming to solve the problems of cumbersome construction procedures, long construction time and poor safety in the traditional railway frame structure divided into double-hole prefabricated D beams for hole-by-hole reinforcement

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