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Business line tunnel and bridge section concrete tie renewal method

A technology for concrete and sleepers, which is applied in the field of replacement of concrete sleepers in business line tunnels and bridge sections. It can solve problems such as failure to meet operational requirements, and achieve the effect of improving sleeper replacement efficiency and improving replacement efficiency.

Active Publication Date: 2018-08-07
CHINA RAILWAY 22ND BUREAU GROUP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, a batch of single-track railways built in the 1970s and 1980s can no longer meet the operational requirements

Method used

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  • Business line tunnel and bridge section concrete tie renewal method
  • Business line tunnel and bridge section concrete tie renewal method
  • Business line tunnel and bridge section concrete tie renewal method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] A method for replacing concrete sleepers in a tunnel section of a business line provided in this embodiment includes:

[0041] To unload the sleeper, unload the sleeper 4 to the ditch on both sides of the first section of the roadbed at both ends of the tunnel in advance, arrange it neatly and anchor it;

[0042] For construction preparation, first determine the position of "opening the door", remove or remove the anti-climbing equipment and gauge rods that affect the operation, and mark the rail waist of track 3 with paint according to the designed sleeper position. Sprinkle water on the ballast bed in the replacement section, and install temporary lighting equipment at the same time. According to the compaction or dirtiness of the ballast bed in the replacement section, replenish the ballast 2 with a ballast repair vehicle;

[0043] Reverse the sleepers, and use a flatbed car or a monorail trolley to transport the new sleepers into the tunnel. The 4 sleepers are stack...

Embodiment 2

[0066] A method for replacing concrete sleepers in the bridge section of the business line provided in this embodiment includes:

[0067] Before changing pillows, manually remove the guard rails on the bridge by using the pillow changing skylight point, and push the inside point to the roadbed on both sides of the line outside the bridge head with a flatbed truck, outside the safety limit.

[0068] The beam body is strengthened, and the anchorage strength, corrosion degree and damage degree of the steel bracket U-bolt are inspected on site, and corresponding marks are made. To check the transverse connection of concrete beams, and to consider whether the increase of eccentric load on the beam body will affect its stability, it is necessary to have the investigation and experiment results of relevant units, and take corresponding reinforcement measures.

[0069] Among them, it is forbidden to stack sleepers and bridge sleepers on the sidewalk, and bridge sleepers must be placed...

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Abstract

The invention discloses a business line tunnel and bridge section concrete tie renewal method, and relates to the technical field of operation railway tunnel and bridge section concrete tie renewal. The business line tunnel and bridge section concrete tie renewal method includes the steps of tie unloading, construction preparation, tie reshipment, tie box railway ballast opening, fastener disassembly, old tie extraction, ballast bed leveling, new tie penetration, fastener installation, railway ballast backfilling, track lifting, tamping and finishing, anti-crawling device and gauge installation, old material recovery, acceptance and opening, rechecking and renovation. A train passes a tunnel needing tie renewal, new ties are transported by the train, unloaded at two ends of the tunnel andmanually transported, the unloaded ties are placed on two sides of a track forwards, the quantity ratio of the ties on two sides of the track is 3:2, workers can conveniently and simultaneously startworking from two sides, cross replacement is performed, and tie renewal efficiency is improved.

Description

technical field [0001] The invention relates to the field of replacing concrete sleepers in operating railway tunnels and bridge sections, in particular to a method for replacing concrete sleepers in operating railway tunnels and bridge sections. Background technique [0002] With the rapid development of my country's economy, the demand for transportation is increasing significantly, especially the demand for railway transportation. As a result, the capacity and quality of railway transportation are far from meeting the needs of social and economic development for railway transportation. Among them, a batch of single-track railways built in the 1970s and 1980s can no longer meet the operational requirements. Therefore, it is necessary to improve the transport capacity by transforming existing lines and adding second lines. [0003] Existing lines that need to be modified such as figure 1 As shown, it includes a roadbed 1 , a track 3 arranged on the roadbed 1 , and a sleep...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01B29/10
Inventor 孙向楠吴兰青王富武杨维华朱全泉张克智蔺俊杰袁涛吴建国陈晨申国顺刘凯史涛宁
Owner CHINA RAILWAY 22ND BUREAU GROUP
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