Quick dismantling method for multi-span continuous double arch bridge causing connected arch effect

A double-curved arch bridge and effect technology, which is applied in building maintenance, construction, building construction, etc., can solve the problems of hidden safety hazards, long suspension time, and slow speed, so as to achieve fast demolition speed, improve efficiency, and ensure safety Effect

Inactive Publication Date: 2012-10-24
ZHEJIANG UNIV OF TECH
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Problems solved by technology

[0004] In order to overcome the deficiencies of the existing double-curved arch bridge demolition method, such as slow speed, long break-off time, and potential safety hazards, the purpose of the present invention is to provide a safe and reliable double-curved arch bridge with fast bridge demolition speed, short break-off time Removal method

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  • Quick dismantling method for multi-span continuous double arch bridge causing connected arch effect
  • Quick dismantling method for multi-span continuous double arch bridge causing connected arch effect
  • Quick dismantling method for multi-span continuous double arch bridge causing connected arch effect

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Embodiment Construction

[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0024] refer to Figure 1~Figure 4 A rapid demolition method for a multi-span continuous double-curved arch bridge that induces a double-arch effect, comprising the following steps: (1) cofferdams of river courses to ensure that debris and residues during bridge demolition can be cleaned up in time. (2) Pump water for dredging and reserve the construction site. (3) Close navigable rivers. (4) Remove railings and deck concrete. (5) Cut off the arch ribs from...

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Abstract

The invention discloses a quick dismantling method for a multi-span continuous double arch bridge causing a connected arch effect. The quick dismantling method comprises the following steps of: (1) coffering a river channel and ensuring that fragments and residues during bridge dismantling can be cleaned in time; (2) pumping water and dredging to leave a construction site; (3) closing a navigable river and ensuring the safety of navigable vessels; (4) dismantling the railing and bridge surface concrete and reducing objects falling on the bridge surface; (5) sequentially chiseling off the arch ribs from the middle of an arch springing toward two sides; (6) enabling the bridge to continuously collapse by using the connected arch effect; and (7) treating wastes. According to the quick dismantling method disclosed by the invention, the construction period can be effectively shortened and the construction safety is improved; and the phenomenon that the river channel is blocked in the dismantling process is avoided by dredging a cofferdam, so that the construction cost is greatly reduced.

Description

technical field [0001] The invention relates to the field of bridge demolition, in particular to a construction method for dismantling a multi-span continuous double-curved arch bridge by using a machine chisel to trigger a double-arch effect. Background technique [0002] Since the 1960s, double-curved arch bridges have been widely adopted all over the country. However, after decades of use, except for a small number of double-curved arch bridges that can meet the current traffic requirements through reinforcement, most of them have become dangerous bridges due to low load levels and overdue service, with cracks and concrete weathering in varying degrees. , no maintenance value, must be demolished and rebuilt in road reconstruction. Due to various reasons such as lack of necessary precautionary measures, serious violation of construction procedures and construction plans, blind construction, inadequate technical safety management of the construction unit, and low quality o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01D24/00
Inventor 彭卫兵史贤豪潘晓东
Owner ZHEJIANG UNIV OF TECH
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