Construction method of overhead fast longitudinal moving auxiliary beam

Abstract

The invention relates to the technical field of underpass construction, in particular to a construction method of an overhead fast longitudinal moving auxiliary beam. The construction method is characterized by at least comprising the following steps that hanger rail reinforcement is carried out on a front triangular area line of a jacked box culvert, and front auxiliary beam steel sleepers penetrate in advance; a beam moving trolley is erected on an existing steel rail, the auxiliary beam is suspended and longitudinally moved to the upper portion of a next box culvert to be jacked through thebeam moving trolley. The construction method has the advantages that the construction method can adapt to the project characteristic that D-shaped auxiliary beams in continuous jacking construction of underpass porous box culverts of linear zones and curved zones of existing railroad business lines, the construction speed is high, the efficiency is high, the cost is low, machines, tools and equipment are light, the line blocking frequency is low, the influence on line operation and safety is small, an overhead line system does not need to be powered off for cooperating, and especially duringsequential and continuous jacking construction of porous adjacent box culverts of multiple busy trunk line zones, the construction method is more prominent in benefit and advantage.

Description

technical field [0001] The invention relates to the technical field of construction of an underpass type interchange, in particular to a construction method for a suspended beam that can be suspended and quickly longitudinally moved. Background technique [0002] With the rapid development of my country's economy, the scale of urban and railway construction continues to expand, and when the railway passes through the city in the form of roadbed lines, it will block the urban traffic on both sides. Level crossings can no longer meet the increasingly busy urban traffic and railway transport efficiency and security requirements. In order to improve the status quo of urban traffic and promote the coordinated development of the city, it is necessary to build (rebuild) over-span bridges or under-pass box culvert passages at the intersections of urban roads and operating lines, and change level crossings into overpasses to realize urban traffic and railway transportation Mutual non...

AI Technical Summary

Problems solved by technology

The rail car longitudinal moving method is safe and reliable, but the cost is high, and the electrified section needs to cooperate with the power outage of the catenary, which is very inconvenient; there are usually two methods for the manual longitudinal moving method. Construction preparations, and there are great safety hazards in the process of moving beams; the second is the longitudinal beam moving method developed in recent years, which is implemented smoothly on straight lines, but it is easy to cause rail jamming and derailment when encountering curved lines

In addition, when the porous box culvert of the same section is continuously jacked, it is usually necessary to backfill the triangular area to restore the line after the jacking of a box culvert is completed, and then move the beam longitudinally to the next box culvert jacking reinforcement line. Then the follow-up process and jacking construction can be carried out. The repeated excavation and backfilling of the line not only consumes time and materials, has low efficiency and high cost, but also has great safety hazards to the stability of the line and operation safety, and the maintenance workload is also large.

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