Weight-reducing load-increasing durability-prolonging two-way curved arch bridge reinforcing and maintaining method

A double-curved arch bridge, durability technology, used in bridge maintenance, bridge reinforcement, bridges, etc., can solve the problems of low design load level, incompleteness, incompleteness, etc., and achieve the effect of prolonging the service life.

Inactive Publication Date: 2018-10-26
CCCC ROAD & BRIDGE SPECIAL ENG
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Problems solved by technology

The double-curved arch bridge has the disadvantages of poor integrity (assembled by scattered small components), less structural reinforcement, and low design

Method used

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  • Weight-reducing load-increasing durability-prolonging two-way curved arch bridge reinforcing and maintaining method
  • Weight-reducing load-increasing durability-prolonging two-way curved arch bridge reinforcing and maintaining method
  • Weight-reducing load-increasing durability-prolonging two-way curved arch bridge reinforcing and maintaining method

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Embodiment Construction

[0033] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0034] Such as Figure 1~5 As shown, the maintenance and reinforcement method of the double-curved arch bridge in this embodiment is mainly adjusted from three aspects. One is to increase the structural strength of the main arch ring by increasing the cross-sectional area of ​​the main arch rib 1 and the transverse beam 3; The cross-sectional area of ​​the arch wave 2 increases the structural strength of the main arch ring; the third is to reduce the load of the arch bridge itself by replacing the filler 7 on the arch with light materials.

[0035] Such as Figure 3-5 As shown, it is a schematic diagram of the implementation of the first scheme. The main arch rib 1 is chiseled. The thickness of the chisel is about 1 cm to form a rough surface, and then it is planted with bars. The planted bars on the main arch rib 1 Such as Figure...

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Abstract

The invention relates to the field of bridge reinforcing and maintaining methods, in particular to a weight-reducing load-increasing durability-prolonging two-way curved arch bridge reinforcing and maintaining method. The method comprises the following steps that traffic on a bridge pavement is closed; arch padding materials are dismantled; concrete pouring is carried out on the upper end faces oftwo way curved arch tiles to increase cross sectional area of the two way curved arch tiles; reinforced concrete pouring is carried out on a main arch rib and a cross beam to increase cross sectionalareas of the main arch rib and the cross beam; and weight-reducing padding materials are arranged, in a filling mode, in the positions where arch padding materials are arranged of the two way curvedarch tiles and spandrel arch tiles, bridge deck structure pouring is carried out on the weight-reducing padding materials to complete arch bridge reinforcing and maintaining. The weight-reducing load-increasing durability-prolonging two-way curved arch bridge reinforcing and maintaining method has the advantaged of reducing self-weight of the structure, improving loading capacity of the structure,improving integral rigidity and stability, prolonging the service life of the structure, and having good application prospect.

Description

technical field [0001] The invention relates to the field of bridge reinforcement and maintenance methods, in particular to a double-curved arch bridge reinforcement and maintenance method for reducing weight, increasing load and prolonging durability. Background technique [0002] The double-curved arch bridge is a bridge structure independently invented by our country in a specific historical period from the 1960s to the 1970s. It is composed of the main arch ring and the arch building. Such as Figure 1~2 As shown, the main arch ring is composed of main arch ribs 1, arch waves 2 and transverse beams 3, and the arch structures are generally composed of abdominal arch walls or columns 4, abdominal arch waves 5, arch filler 6 and bridge deck structure. Because its shape is curved in both vertical and horizontal directions, it is called a double-curved arch bridge. From the late 1960s to the early 1980s, double-curved arch bridges were widely promoted and applied throughout ...

Claims

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Application Information

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IPC IPC(8): E01D22/00
CPCE01D22/00
Inventor 吴中鑫何初生吴俊明盛海军王蔚秦向杰陈进王世祥龙安曾铮
Owner CCCC ROAD & BRIDGE SPECIAL ENG
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