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Demolition method of double curved arch bridge

A technology for double-curved arch bridges and arch bridges, which can be used in bridges, bridge construction, bridge maintenance, etc., can solve problems such as high pressure on the vault, and achieve the effect of reducing safety risks and improving demolition efficiency.

Active Publication Date: 2021-10-22
CHONGQING JIAOTONG UNIVERSITY
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Problems solved by technology

[0008] In view of this, the object of the present invention is to provide a method for dismantling a double-curved arch bridge, which can effectively solve the problem of excessive pressure on the vault during the arching process and improve the demolition efficiency

Method used

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  • Demolition method of double curved arch bridge
  • Demolition method of double curved arch bridge
  • Demolition method of double curved arch bridge

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Embodiment Construction

[0048] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, so that those skilled in the art can better understand the present invention and implement it, but the examples given are not intended to limit the present invention.

[0049] The double curved arch bridge removal method of the present embodiment comprises the following steps:

[0050] 1) Remove the arch bridge structure except the main arch ring; specifically, demolish the arch bridge structure and arch upper arch except the main arch ring in the order of the bridge deck, the filling on the belly arch, the belly arch, the column, and the filling on the main arch. architecture.

[0051] 2) A support structure is built directly under the main arch ring. The support structure of this embodiment adopts the Bailey beam steel arch frame 4, such as Figure 8-10 shown.

[0052] 3) Install support jacks 5 at intervals between the arch rib 1 and the sup...

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Abstract

The invention discloses a method for dismantling a double-curved arch bridge, which comprises the following steps: 1) dismantling the arch bridge structure except the main arch ring; 2) building a supporting structure directly under the main arch ring; 3) building between the arch rib and the supporting structure Install support jacks at intervals; 4) Adjust the thrust of the two symmetrical support jacks so that the axial pressure value of the arch rib vault section is less than or equal to the set balance target value; arch wave; 6) Drill a hole at the vault position of the arch rib, install a pressure jack in the hole, and adjust the thrust of the pressure jack to be equal to the axial pressure value of the arch rib vault section; 8) split the arch feet of the two arch ribs located on both lateral sides of the bridge, and use hoisting equipment to lift them away; 9) cycle step 5) to step 8), and remove all the arch ribs of the arch bridge in turn; 10) Remove the construction equipment and supporting structures, and complete the demolition of the double-curvature arch bridge.

Description

technical field [0001] The invention belongs to the technical field of methods and equipment for dismantling bridges, in particular to a method for dismantling double-curved arch bridges. Background technique [0002] A double-curved arch bridge is a form of arch bridge whose shape is curved in both vertical and horizontal directions. It usually consists of arch ribs, arch waves, arch slabs, horizontal joint members and arch buildings. 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. [0003] During the demolition process of double-curved arch bridges, collap...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01D24/00
CPCE01D22/00
Inventor 郭增伟程皓周水兴
Owner CHONGQING JIAOTONG UNIVERSITY
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