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Method for strengthening truss arch bridge

A technology for arch bridges and trusses, which is applied in the field of reinforcement of truss arch bridges. It can solve problems such as water seepage of bridge decks, endangering bridge safety, and aging of component concrete, and achieves the effects of increasing horizontal connections, prolonging bridge life, and improving integrity

Inactive Publication Date: 2014-05-07
SHAANXI LONGHAI ENG CONSTR
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0002] The main bridge of the truss arch bridge is composed of multiple pieces of truss arch ribs. After long-term use, water seepage of the bridge deck, cracking of arch ribs, corrosion of steel bars, and aging of component concrete will occur, which seriously endanger the safety of the bridge.

Method used

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Embodiment Construction

[0013] Below in conjunction with embodiment the present invention is described in more detail.

[0014] The present invention is a kind of reinforcement method of truss arch bridge, comprises the following steps:

[0015] Step 1, grouting the open cracks to seal them;

[0016] Since the cracks of the components will reduce the structural rigidity of the bridge, and the cracks that are too wide may cause corrosion of the steel bars and reduce the durability of the structure, it is necessary to grout or seal the cracks of the upper chord, lower chord and web of the truss arch to Restores structural rigidity, integrity, durability. In this step, all cracks with a width greater than 0.15 mm should be filled with glue, and all cracks with a width less than 0.1 mm should be sealed during the grouting process.

[0017] Step 2: Chisel away the original bridge concrete deck pavement, remove the original truss arch bridge deck, and re-cast the 30cm thick reinforced concrete overall br...

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Abstract

A method for strengthening a truss arch bridge comprises the steps that (1) a cracked crack is grouted and sealed; (2) an original bridge concrete bridge deck pavement layer is chiseled and removed, an original truss arch bridge face plate is demounted, and a reinforced concrete overall bridge face plate with the thickness of 30cm is cast in situ again; (3) handrails are strengthened; (4) diaphragm plates are added; (5) the cross sections of arc rib components are enlarged, the cross sections of arch rib lower chords and the cross sections of web members are enlarged, steel bars are embedded on the arch rib side, a reinforcing mesh is assembled, and concrete is poured. According to the method for strengthening the truss arch bridge, transverse connection is increased, the integrity of the structure is improved, and the service life of bridges can be prolonged effectively.

Description

technical field [0001] The invention relates to the field of building materials and movable houses, in particular to a reinforcement method for a truss arch bridge. Background technique [0002] The main bridge of the truss arch bridge is composed of multiple truss arch ribs. After long-term use, water seepage of the bridge deck, cracking of the arch ribs, corrosion of steel bars, and aging of component concrete will occur, which seriously endanger the safety of the bridge. Contents of the invention [0003] In order to overcome the deficiencies of the above-mentioned prior art, the object of the present invention is to provide a reinforcement method for a truss arch bridge. [0004] In order to achieve the above object, the technical scheme adopted in the present invention is: [0005] A method for strengthening a truss arch bridge, comprising the steps of: [0006] Step 1, grouting the open cracks to seal them; [0007] Step 2: Chisel away the original bridge concrete...

Claims

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Application Information

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IPC IPC(8): E01D22/00
Inventor 刘斌
Owner SHAANXI LONGHAI ENG CONSTR
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