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Reinforcement method for single beam bearing of bridge and construction method thereof

A technology of single-board force and construction method, which is applied in bridge reinforcement, bridge, bridge maintenance, etc., can solve the problems of affecting the reinforcement effect and the difficulty of small hinge gaps, etc., and achieve the effect of convenient construction and improvement of lateral force

Inactive Publication Date: 2015-02-04
金辉
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Lateral prestressing technology is also used, but it is difficult to handle due to the small hinge gap, which affects the reinforcement effect

Method used

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  • Reinforcement method for single beam bearing of bridge and construction method thereof
  • Reinforcement method for single beam bearing of bridge and construction method thereof
  • Reinforcement method for single beam bearing of bridge and construction method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0033] Another object of the present invention is to provide a construction method for reinforced bridge veneers, comprising the following steps:

[0034] Step 1, perform horizontal lofting and positioning at the position where the beam needs to be set;

[0035] Step 2, roughen the surface of the positioning position, and punch holes according to the hole positions on the U-shaped steel flange;

[0036] Step 3, clear the hole and embed steel bars and anchor screws in the hole;

[0037] Step 4, Anchor and install U-shaped steel at the positioning position;

[0038] Step 5, pouring concrete into the U-shaped steel.

Embodiment 2

[0040] A construction method for stress-strengthening a bridge veneer, comprising the following steps:

[0041] Step 1, washing and repairing the beam and slab defects;

[0042] Step 2, perform horizontal lofting and positioning at the position where the beam needs to be set;

[0043] Step 3, roughen the surface of the positioning position, and punch holes according to the hole positions on the U-shaped steel flange;

[0044] Step 4, clear the hole and embed steel bars and anchor screws in the hole;

[0045] Step 5, Anchor and install U-shaped steel at the positioning position;

[0046] Step 6, pouring concrete into the U-shaped steel.

Embodiment 3

[0048] A construction method for stress-strengthening a bridge veneer, comprising the following steps:

[0049] Step 1, perform horizontal lofting and positioning at the position where the beam needs to be set;

[0050] Step 2, roughen the surface of the positioning position, and punch holes according to the hole positions on the U-shaped steel flange;

[0051] Step 3, clear the hole and embed steel bars and anchor screws in the hole;

[0052] Step 4, Anchor and install U-shaped steel at the positioning position;

[0053] Step 5, pouring concrete into the U-shaped steel.

[0054] Step 6, install anchor ends of stay cables at both ends of the vertical beam of the bridge, the anchor ends of stay cables are connected with longitudinal prestressed steel bars, and stretch the prestressed steel bars.

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Abstract

The invention relates to a reinforcement method for single beam bearing of a bridge and a construction method thereof, and provides an anchor riveted steel concrete cross beam which is provided with longitudinal pre-stressed reinforcements to serve as elastic support so as to achieve the purposes of increasing the integrity of a hollow slab, improving load lateral distribution and improving the integral bearing capacity of the bridge. The other purpose of the invention is to provide a reinforcement construction method for single beam bearing of the bridge. The method comprises the following steps: 1, transversely lofting and positioning; 2, matting on the surface and perforating; 3, cleaning holes and embedding reinforcements and anchor screws in the holes; 4, arranging U-shaped steel at the locating position through anchor riveting; 5, pouring concrete into the U-shaped steel. The method has the technical effects that certain rigidity is achieved by additionally arranging the cross beams and the purpose of improving the lateral stress is achieved. Active reinforcement can be achieved and the elastic support is also equivalently added by tensioning the longitudinal pre-stressed reinforcements; the under-bridge construction causes less interference to traffic, and the construction is convenient.

Description

technical field [0001] The invention relates to the field of bridge reinforcement, in particular to a method for reinforcing a single plate of a bridge under stress and a construction method thereof. Background technique [0002] Small hinged hollow slabs rely on the structure of small hinged joints to form a whole, and small hinged joints are easily damaged, causing the single plate to be stressed, resulting in damage to the bridge structure. At present, methods such as replacing the bridge deck pavement and pasting carbon fiber or steel plates are used to address the stress of the veneer. The above methods have a large increase in dead load, and the traffic needs to be interrupted for a long time during construction. Lateral prestressing technology is also used, but it is difficult to handle because of the small hinge gap, which affects the reinforcement effect. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide ...

Claims

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Application Information

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IPC IPC(8): E01D22/00
CPCE01D22/00
Inventor 金辉
Owner 金辉
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