Construction method for embedded railway traffic engineering guided way

Abstract

The invention discloses a construction method of the embedded orbit guide rail in the traffic engineering. It aims at providing a method suitable for the Chinese situation, which has simple and practicable construction technology, low cost and high efficiency. It has the following steps: after derusting, the guide rail takes U90 primer treatment on its bottom surface and side. The welding of the guide rail: implement gas pressure welding on the whole line long track and curved track whose curvature radius>200m. Adopt narrow clearance manual arc welding on the points zone and curved track with small curvature radius. Spray and bond primer P21 and pour epoxy resin on both sides of the rail ditch and the guide rail separately. The construction method reduces the difficulty in operation and cost and improves the construction efficiency. It ensures the construction quality and resolves the rail slot welding problem in the points zone effectively by establishing the effective and feasible welding process.

Description

technical field [0001] The invention relates to a construction technology of an embedded rail transit project. Background technique [0002] The embedded rail transit project is a brand-new urban rail transit project. This new type of traffic project is the first case in China. The project adopts the guide rail and special turning turnout of the TRANSLOHR system. At present, the embedded rail transit construction technology refers to The construction technology of French LOHRE company and the resin material of international EDILON company. The above-mentioned construction techniques require professional construction teams and special construction equipment, which are not suitable for China's national conditions, and domestic construction is restricted. The main problems are as follows: [0003] 1. Seamless welding technology of guide rail: [0004] For the guide rails and turnouts of the TRANSLOHR system, the design requires the use of aluminothermic welding for long rails...

AI Technical Summary

Problems solved by technology

[0004] For the guide rails and turnouts of the TRANSLOHR system, the design requires the use of aluminothermic welding for long rails. However, aluminothermic welding is costly and inefficient, and it is not suitable for narrow gap welding of track seams in the turnout area.

In addition, according to the components provided by the guide rail manufacturer, the carbon content is between 0.4-0.6 and the manganese content is about 1.2. Combining other components, the carbon equivalent is high and the weldability is poor

At the same time, due to the limitation of the welded joint form and improper welding process, it is easy to produce defects such as pores, cracks and slag inclusions.

[0005] 2. The con

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