Quick-beam change construction method for existing railway line of railroad

Abstract

The invention discloses a quick-beam change construction method for an existing railway line of a railroad. The method comprises the following steps: first building a beam change construction bracket platform at the original place below an old beam, and then arranging a slideway system on the bracket platform; then, mounting a temporary support cushion on the outer side of an old beam support; afterwards, removing barriers for beam moving, and moving the new beam onto the slideway system outside the old beam; mounting a temporary support at the bottom of the new beam; lifting a seamless long steel rail in a blocking point, synchronously and transversally moving the new and the old beam so as to move the new beam to the original place of the old beam, fixing the temporary support on the temporary support cushion, and placing the seamless long steel rail down on the new beam for fastening, so as to restore traffic; finally, after the mounting of a permanent support, dismantling the temporary support at the skylight point, so as to allow the permanent support to be stressed. The method can realize the beam change of the existing railway line of the railroad, ensures beam change construction safety, is short in key point time, reduces the influence on the normal operation of the railroad to the utmost, and feasibly and effectively reduces the construction risk.

Description

technical field [0001] The invention relates to a reconstruction construction of an existing line bridge, in particular to a construction method for quickly changing beams of an existing railway line. Background technique [0002] In recent years, as a large number of bridges built in the early days of liberation have reached their designed service life, as well as man-made damages caused by speed increase, traffic volume increase, heavy load and overloading, etc., both the bearing capacity of the bridge and the use of the bridge Performance, can not meet the requirements of continuous improvement. During the inspection of these "aging" bridges, the equipment management unit found that the structural functions of many bridges were seriously degraded and their bearing capacity was insufficient. The further development of bridge diseases will endanger the safety of traffic on them and cause immeasurable economic losses. Therefore, it is imperative to deal with these bridges r...

AI Technical Summary

Problems solved by technology

Using the above method, the disadvantages are that the "point" takes a long time, the lifting weight of the bridge erecting machine is limited, and the seamless steel rail of the original line needs to be sawn off

Therefore, it is extremely inadvisable to carry out this kind of beam replacement construction according to the traditional scheme on busy trunk lines

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