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Rapid dismantling method for main road overline pedestrian overpass

A technology for pedestrian overpasses and arterial roads, which is applied to bridges, bridge maintenance, bridge reinforcement, etc., can solve the problems of the impact of the surrounding traffic system, long construction period, difficult construction, etc., and achieves short closed traffic time, low construction cost, and construction. The effect of the progress block

Pending Publication Date: 2022-02-08
CHINA RAILWAY TUNNEL GROUP CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a method for quickly dismantling the main road cross-line pedestrian bridge to solve the technical problems of long construction period, high construction difficulty and great impact on the surrounding traffic system during the demolition construction process of the main road cross-line pedestrian bridge

Method used

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  • Rapid dismantling method for main road overline pedestrian overpass
  • Rapid dismantling method for main road overline pedestrian overpass
  • Rapid dismantling method for main road overline pedestrian overpass

Examples

Experimental program
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Embodiment

[0040] Example: The demolition project of a pedestrian overpass on a main road in a downtown area

[0041] Project overview: The pedestrian bridge is located on the main road in the central city. The main bridge 1 is a single-span steel box girder bridge with a total length of 57.31m, a maximum width of the bridge deck of 30m, and a net width of the standard section of 10m. The pedestrian bridge is composed of upper and lower parts. The upper part is mainly a single-span steel box girder structure. The main span is 42.4m long and has an irregular shape as a whole. , the staircase is a reinforced concrete structure; the main bridge 1 weighs about 550 tons.

[0042] For specific removal plan, see Figure 1 to Figure 4 , including the following steps:

[0043] S1, construction preparation:

[0044] (1) The site is equipped with power supply (380V150KW and 220V lighting power), and equipped with an emergency generator of 200Kw, clean water source (if it is difficult to supply w...

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Abstract

The invention discloses a rapid dismantling method for a main road overline pedestrian overpass. The method comprises the following steps: S1, removing the accessory structure of the overpass; S2, carrying out site cleaning; S3, dismantling bridge deck pavement of the main bridge and dismantling attached facilities; S4, carrying out preparation work before main bridge translation; S5, translating the main bridge; S6, cutting and dismantling the main bridge; and S7, clearing the site, opening side road traffic, and recovering normal passing of vehicles and personnel. The technical problems that the construction period is long, the construction difficulty is high and a surrounding traffic system is greatly influenced in the main road overline pedestrian overpass dismantling construction process are solved.

Description

technical field [0001] The invention relates to the technical field of municipal bridge construction, in particular to a method for quickly dismantling a main road cross-line pedestrian bridge. Background technique [0002] With the development of urban construction and underground space, there are more and more engineering projects for rail transit and street crossing passages. Through the seamless connection between the existing rail transit and street crossing passages, the two will move toward integrated design and simultaneous construction, avoiding the burden caused by phased construction. While urban traffic brings impact, it also creates good social and economic benefits. [0003] However, due to limited road space resources, the development of underground space often requires the integration of ground transportation facilities; therefore, it is often necessary to remodel, relocate or demolish the overpass. According to the structural form and location of the overpa...

Claims

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Application Information

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IPC IPC(8): E01D24/00
CPCE01D22/00
Inventor 李现朋王阿龙袁中凯张强梁广胜马瑞升何列李恩雷何明娄志豪董锋利张万洲桂斌
Owner CHINA RAILWAY TUNNEL GROUP CO LTD