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Method for cutting and dismantling tied-arch bridge through few-support chain saw

A tie-bar arch bridge and chain saw technology, which is applied in the field of chain saw cutting and dismantling of tie-bar arch bridges with few brackets, can solve the problems of long construction period and achieve the effects of high operating efficiency, less equipment, and shortened construction period

Active Publication Date: 2021-06-25
NANJING RUNHUA MUNICIPAL CONSTR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to improve the problem of long construction period in the process of dismantling tie-bar arch bridges, this application provides a chainsaw cutting and demolition method for tie-bar arch bridges with few brackets

Method used

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  • Method for cutting and dismantling tied-arch bridge through few-support chain saw
  • Method for cutting and dismantling tied-arch bridge through few-support chain saw
  • Method for cutting and dismantling tied-arch bridge through few-support chain saw

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Embodiment Construction

[0055] The following is attached Figure 1-10 The application is described in further detail.

[0056] The embodiment of the present application discloses a chainsaw cutting and dismantling method for a tied arch bridge with few supports. refer to figure 1 and figure 2 The chainsaw cutting and removal method of the tied arch bridge with few brackets includes the following steps:

[0057] Step S1: Before demolition, both ends of the tie-bar arch bridge shall be closed with fences, and eye-catching notices and warning signs shall be hung on the fences. Personnel shall be on duty at the entrance of the construction area 24 hours a day, and irrelevant personnel and vehicles are strictly prohibited from entering the construction site.

[0058] Then measure the bottom elevation of the existing waterway with the waterway management department as the acceptance standard of the waterway after dismantling (not lower than the old river bottom elevation after demolition and cleaning)....

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Abstract

The invention relates to a method for cutting and dismantling a tied-arch bridge through a few-support chain saw. The method comprises the following steps of erecting temporary buttresses; dismantling bridge deck slabs and anti-collision guardrails; symmetrically dismantling a middle cross beam; detaching the suspender; removing the middle section of the main arch rib; removing a middle-section straining beam; removing two side sections of the arch rib; removing the straining beam side section; dismantling the end cross beam; dismantling the straining beam buttresses and the arch rib supporting frames; cleaning the river channel; and performing channel acceptance. The method has the characteristics of few supports and few working procedures, the construction period is short, in the construction process, manpower and equipment are few, the operation efficiency is high, and the construction cost is effectively reduced.

Description

technical field [0001] The present application relates to the field of bridge construction, in particular to a method for cutting and dismantling a tied-rod arch bridge with few brackets and chainsaws. Background technique [0002] Tied arch bridges are generally composed of arch ribs, tie rods (beams), suspenders (or columns), etc. Tied arch bridges are a type of bridge that combines the advantages of both arches and beams in one reinforcement. The basic structural forms are combined to bear the load together, and give full play to the structural performance and combined effect of the beam under bending and arch compression. At present, with the rapid development of the city and the continuous upgrading of waterways, more and more old tied arch bridges are facing demolition and reconstruction. [0003] In the related art, the Chinese patent with the publication number CN108411804A discloses a Bailey anti-hanging composite girder device and its dismantling method for disman...

Claims

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Application Information

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IPC IPC(8): E01D24/00E01D4/00
CPCE01D22/00E01D4/00
Inventor 陈伟江一飞梁安东董宇汪亮
Owner NANJING RUNHUA MUNICIPAL CONSTR CO LTD