Line reinforcement device for frame bridge jacking into railway branch area

Abstract

The invention discloses a reinforcing device for a railway turnout area circuit during jacking for a frame bridge. The reinforcing device comprises a transversal beam and a longitudinal beam, wherein the transversal beam is placed right below a sleeper; a longitudinal steel plate is cushioned between the sleeper of a point rail switch part in a turnout area and the transversal beam; the transversal beam is connected with the sleeper by a U-shaped clamp, an overhead rail beam and a cover plate; and the steel plate is tightly clamped between the transversal beam and the sleeper. After the improvements aforementioned are performed for reinforcing the circuit, the steel plate is connected with the sleeper above the steel plate, the transversal beam below the sleeper and the overhead rail beam, so as to ensure that the whole point rail in a point rail range is located on one plane and then the point rail flexibly rotates in the plane and can be normally used; with the adoption of the reinforcing device disclosed by the invention, the situation that the railway turnout point-rail section circuit is reinforced into an integral structure which is stable and reliable can be effectively ensured, and normal use for a turnout during circuit reinforcement and frame bridge jacking construction is ensured, thus meeting the safety requirements of driving, and reducing the workloads of maintenance and repair.

Description

technical field [0001] The invention relates to an overall reinforcement device for a railway turnout area, in particular to a line reinforcement device for ensuring the normal use of a railway turnout and the safety of railway traffic under the condition of normal jacking of a frame bridge. Background technique [0002] The new frame bridge under the existing line must ensure the normal operation of the existing railway. The frame bridge is constructed by the jacking method, and the railway line must be reinforced to bear the train load and the weight of the line equipment within the scope of the excavated subgrade of the jacked frame bridge. At present, the line reinforcement usually adopts the vertical and horizontal beams of the hanging rail: the vertical and horizontal beams are generally I-beams, and the hanging rails are 43kg / m or 50kg / m rails combined to form a 3-5-3 or 3-7-3 rail beam. This reinforcement method is relatively mature and widely used. [0003] However...

AI Technical Summary

Problems solved by technology

[0003] However, this line reinforcement method is obviously not good when there is a turnout, and it cannot guarantee the normal operation of the turnout point rail. It often happens that the point rail cannot be rotated or cannot be tightly attached, which leads to abnormal changes in the signal, thereby affecting the normal driving organization.

In this situation, traditionally two methods are generally adopted: one is to consider the design, avoid the turnout group at the bridge position, and pass the railway under the straight section. The advantage of this method is that it can be constructed according to the general reinforcement method. The disadvantage is It will affect the selection of road alignment, which may cause regret for urban traffic construction or cause a lot of demolition work; another method is to strengthen maintenance and slow down the progress of jacking and excavation when jacking to the fork area and speed, adjust and reinforce at any time, the maintenance workload is heavy, and the construction difficulty increases

This is because the turnout area is more sensitive to changes in the level of the track, and because the traditional method of strengthening the turnout area is weak, the beams are separated by sleepers, and the working status of each beam directly affects the geometry of the turnout, that is, the longitudinal strength is insufficient and cannot be guaranteed. The geometric shape of the turnout often leads to the deformation of the switch part, the jamming of the point rail, and the lack of close contact with the point rail. Faults occur from time to time, which affects driving safety.

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