Strengthening method for stress on single plate by using steel reinforced concrete

A technology of single-slab stress and concrete, applied in bridge reinforcement, erection/assembly of bridges, bridge materials, etc., can solve problems such as enhancing the bearing capacity of single beams, difficult to deal with hinge gaps, and affecting reinforcement effects, etc., to increase integrity , improve the carrying capacity, and improve the effect of lateral distribution

Active Publication Date: 2013-06-26
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 the reinforcement effect is affected due to the difficult handling of hinge gaps
The reinforcement technology in the prior art either only enhances the lateral connection, or only enhances the bearing capacity of a single beam, and the reinforcement effect is not obvious

Method used

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  • Strengthening method for stress on single plate by using steel reinforced concrete
  • Strengthening method for stress on single plate by using steel reinforced concrete

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A reinforcement method for steel-reinforced concrete to deal with the stress of a veneer, comprising the following steps:

[0022] a. According to the length and structure of the single-span bridge, the flange U-shaped steel 2 is pressed, and the steel flange of the flange U-shaped steel 2 is provided with through holes;

[0023] b. Roughen the concrete 3 on the bottom plate on both sides of the hinge joint of the hollow plate 1, and drill holes on the bottom plate according to the hole position of the flange U-shaped steel 2 steel flange;

[0024] c. cleaning the borehole and implanting the anchor screw 6 in the through hole;

[0025] d. Anchor and install the flange U-shaped steel 2 on the hollow plate 1;

[0026] e. Pour high-strength self-leveling pebble concrete 3 through the hinged joints of the hollow slab 1.

Embodiment 2

[0028] A reinforcement method for steel-reinforced concrete to deal with the stress of a veneer, comprising the following steps:

[0029] a. According to the length and structure of the single-span bridge, the flange U-shaped steel 2 is pressed, and the steel flange of the flange U-shaped steel 2 is provided with through holes;

[0030] b. First, half of the bridge deck is reinforced, and the surface concrete 3 is roughened on the base plate on both sides of the hinge joint of the hollow plate 1, and holes are drilled on the base plate according to the hole positions of the flange U-shaped steel 2 steel flange;

[0031] c. cleaning the borehole and implanting the anchor screw 6 in the through hole;

[0032] d. Anchor and install the flange U-shaped steel 2 on the hollow plate 1;

[0033] e. Pour high-strength self-leveling pebble concrete 3 through the hinge joint of the hollow slab 1;

[0034] f. Let the bridge deck repair for at least 3 days, and then reinforce the other h...

Embodiment 3

[0036] A reinforcement method for steel-reinforced concrete to deal with the stress of a veneer, comprising the following steps:

[0037] a. According to the length and structure of the single-span bridge, the flange U-shaped steel 2 is pressed, and the steel flange of the flange U-shaped steel 2 is provided with through holes, and the inner wall of the flange U-shaped steel 2 is welded with evenly distributed shear studs ;

[0038] b. First, half of the bridge deck is reinforced, and the surface concrete 3 is roughened on the base plate on both sides of the hinge joint of the hollow plate 1, and holes are drilled on the base plate according to the hole positions of the flange U-shaped steel 2 steel flange;

[0039] c. cleaning the borehole and implanting the anchor screw 6 in the through hole;

[0040] d. Anchor and install the flange U-shaped steel 2 on the hollow plate 1;

[0041] e. Pour high-strength self-leveling pebble concrete 3 through the hinge joint of the hollow ...

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Abstract

The invention relates to a strengthening method for stress on a single plate by using steel reinforced concrete. The strengthening method comprises the following steps. Firstly, U-shaped steel with flanges is pressed according to the length and the structure of a single-span bridge, and through holes are arranged on the steel flanges. Secondly, roughening on surface concrete is performed on base boards of two sides of a hinge joint of a hollow plate, and drilling is performed on the base boards according to hole positions of the steel flanges of the U-shaped steel with the flanges. A drilled hole is cleaned, and an anchoring screw rod is planted in the through hole. Fourthly, the U-shaped steel with the flanges is arranged on the hollow board in an anchoring and sticking mode, and concrete is poured in the hinge joint of the hollow board. According to the strengthening method for stress on the single plate by using the steel reinforced concrete, the hollow plate is strengthened from two aspects of improving integral stress and single beam bearing capacity. Integrity is increased, transverse arrangement of loads is improved, bearing capacity of a single beam is improved, and stress strengthening of the single plate of the hollow board with a small hinge joint is achieved.

Description

technical field [0001] The invention relates to a bridge reinforcement technology, in particular to a reinforcement method for steel concrete to deal with the stress of a single plate. 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. There is a large increase in dead load, and it takes a long time to interrupt traffic during operation. There is also a transverse prestressing technology, but because the hinge gap is difficult to deal with, it affects the reinforcement effect. The reinforcement techniques in the prior art either only enhance the lateral connection, or only enhance the bearing capacity of a single beam, and the reinfo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01D22/00E01D101/26
Inventor 金辉
Owner 金辉
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