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A reinforced structure for the main arch circle of a reinforced concrete arch bridge

A reinforced concrete and reinforced structure technology, which is applied in the direction of bridge reinforcement, arch bridges, bridges, etc., can solve the problems of traffic conditions under the bridge, long cost recovery cycle, high working hours consumption, etc., to reduce the overall labor intensity, reduce the overall working hours, improve The effect of compressive capacity

Active Publication Date: 2017-01-25
陕西云川建设工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

High man-hour consumption, long cost recovery period, etc., and have a significant impact on the traffic conditions under the bridge

Method used

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  • A reinforced structure for the main arch circle of a reinforced concrete arch bridge
  • A reinforced structure for the main arch circle of a reinforced concrete arch bridge
  • A reinforced structure for the main arch circle of a reinforced concrete arch bridge

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] see Figure 1-6 , a reinforcement structure for the main arch ring of a reinforced concrete arch bridge, which includes a prefabricated concrete surface formwork 2 extending along the axial direction of the concrete main arch ring 1 of the arch bridge, and the surface formwork 2 is composed of several formwork sections 16, said The template working section 16 is a formwork system composed of a circle of interconnected templates. The middle part of the top surface of the template working section 16 is fixed with a first steel anchor box 7, and the middle part of its bottom surface is fixed with a second steel anchor box 8. The first steel anchor box 7 and the second steel anchor box 8 are arranged symmetrically to each other, and the first steel anchor box 7 and the second steel anchor box 8 are passed through the first prestressed steel strand 9 and the second prestress The steel strand 10 tightens and fixes the surface formwork section 16 as a whole. The formwork secti...

Embodiment 2

[0039] see Figure 1-6 , a construction method for reinforcing the main arch ring of a reinforced concrete arch bridge, which is realized through the following steps:

[0040] 1) Clean up the damaged concrete surface of the concrete main arch ring 1 of the arch bridge, roughen the surface, and plant shear pins 3 to ensure that the old and new concrete work together;

[0041] 2) Find out the center line of the top and bottom surfaces of each formwork section 16 of the arch bridge concrete main arch ring 1, and then implant threaded steel bars 17 on the upper top surface and lower bottom surface of the center line of the arch bridge concrete main arch ring 1 working section, and then pass the threaded steel bars Fix the pre-embedded load-bearing plate, weld and fix the force-transmitting steel plate 231 in the first steel anchor box 7 or the second steel anchor box 8 and the load-bearing plate (finally pouring concrete to wrap the first steel anchor box 7 or the second steel anc...

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PUM

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Abstract

The invention discloses a reinforcing structure of a reinforced concrete arch bridge main arch ring. The reinforcing structure comprises a prefabricated concrete surface formwork (2) extending in the axial direction of the concrete arch bridge main arch ring (1), the surface formwork (2) is composed of multiple formwork working sections (16) which are a formwork system formed by combining a circle of formworks connected mutually, a first steel anchor box (7) and a second steel anchor box (8) symmetrical to the first steel anchor box (7) are fixed to the middles of the top faces and the middles of the bottom faces of the formwork working sections (16) respectively, and the formwork working sections (16) are provided with a circumferential prestressing steel strand. Due to the fact that the formwork-disassembling-free circumferential prestressing reinforcing technology is adopted, the cross section of the main arch ring is subjected to circumferentially-distributed squeezing force and tangential dragging force, the overall working hours are reduced, the overall labor intensity is lowered, the economic benefit is improved, and meanwhile the radial compression resistance and bearing capability of the main arch ring is effectively improved.

Description

technical field [0001] The invention relates to the technical field of reinforcement of main arch rings on reinforced concrete arch bridges. Background technique [0002] In the reinforcement of the main arch ring of reinforced concrete arch bridges, the commonly used reinforcement methods for the main arch ring include: spray anchor reinforcement, reinforced concrete mold injection reinforcement, reinforcement with steel plates or steel bars, reinforcement with fiber materials, etc., and the variants of the above types of reinforcement, among which Reinforced concrete mold injection reinforcement method is the most widely used in reinforcement of reinforced concrete arch bridge superstructure due to its less construction difficulty. Wait. High man-hour consumption, long cost recovery cycle and other problems, and have a significant impact on the traffic conditions under the bridge. Contents of the invention [0003] The purpose of the present invention is to provide a r...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01D22/00E01D4/00E01D101/28
CPCE01D4/00E01D22/00E01D2101/285
Inventor 李博渊
Owner 陕西云川建设工程有限公司