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Arch bridge dismantling method

A technology for arch bridges and abutments, which is applied in the field of demolition of arch bridges and top-through single-span stone arch bridges, and can solve problems such as low construction efficiency, long demolition period, and high risk of high-altitude operations

Pending Publication Date: 2022-01-18
CHINA COMM NORTH ROAD & BRIDGE +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] This application provides a method for demolition of an arch bridge to solve the problems of long demolition period, low construction efficiency and high risk of high-altitude operations using the direct impact crushing method

Method used

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Embodiment Construction

[0034] The embodiments will be described in detail hereinafter, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the following examples do not represent all implementations consistent with this application. These are merely examples of systems and methods consistent with aspects of the present application as recited in the claims.

[0035] Because the existing method for dismantling the arch bridge has a long construction period, low construction efficiency and high risk of high-altitude operation. Therefore, providing a kind of new method for demolishing the arch bridge is the main problem to be solved at present.

[0036] Among them, the purpose of this construction method is to shorten the construction period, avoid lateral collapse affecting the new bri...

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Abstract

The invention relates to an arch bridge dismantling method which comprises the steps that at least one side of an arch bridge is filled with soil to form a cofferdam; a bridge deck is milled from one end to the other end of the arch bridge; guardrails on the two sides of the arch bridge are dismantled; two excavators are adopted to dismantle arch filling and web arch rings from the middle to the two ends of the bridge deck of the arch bridge; the excavators are stopped on the soil cofferdam, vault strip stones of the main arch ring are dismantled till the vault is broken to the soil cofferdam and the riverbed from the dismantling position, and dismantling continues to be conducted from the main arch position to the bridge abutment; and the two excavators are adopted to stop on the road surfaces at the two ends of the arch bridge to dismantle bridge abutments at the two ends of the arch bridge. By the adoption of the arch bridge dismantling method, arch bridge dismantling construction can be completed two days earlier than that of a direct impact crushing method, the aim of quickening the construction progress while construction machinery is saved is achieved, the construction efficiency is greatly improved, and meanwhile the danger of high-altitude operation is reduced.

Description

technical field [0001] The present application relates to the technical field of dismantling an upward-supporting single-span stone arch bridge, in particular to a method for dismantling an arch bridge. Background technique [0002] Bridges generally refer to structures erected on rivers, lakes and seas to allow vehicles and pedestrians to pass smoothly. During the service period of the bridge, maintenance and reinforcement are required to meet the long-term service function of the bridge. When the bridge is increasingly degraded, cracked and other diseases develop seriously, and the repair and reinforcement can no longer meet the long-term service function of the bridge under economical and reasonable conditions, the bridge needs to be demolished. [0003] A common bridge demolition method in the prior art is the direct impact crushing method. The demolition of the old bridge by the direct impact crushing method basically starts from the 1 / 4 of the vault and advances to bo...

Claims

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Application Information

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IPC IPC(8): E01D24/00
CPCE01D22/00
Inventor 孟鸿昌娄占龙吴丹丹
Owner CHINA COMM NORTH ROAD & BRIDGE
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