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Tiny cross-section expanding method pier column reinforcing method and reinforcing structure

A cross-section and French pier technology, which is applied in bridge reinforcement, building construction, building maintenance, etc., can solve the problems of unsatisfactory engineering needs, large cross-section size, increased self-weight, etc., and achieve material and energy saving, small change in cross-section size, The effect of increased self-weight of the structure

Active Publication Date: 2017-10-10
DALIAN MUNICIPAL DESIGN & RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] According to the above-mentioned technical problems, a method and structure for strengthening pier columns with a small cross-section enlarging method are provided, which are used to solve the problem that the existing enlarging cross-section strengthening method cannot meet the engineering needs, and has a large cross-section size and increased self-weight, or Disadvantages of fees

Method used

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  • Tiny cross-section expanding method pier column reinforcing method and reinforcing structure
  • Tiny cross-section expanding method pier column reinforcing method and reinforcing structure

Examples

Experimental program
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Effect test

Embodiment 1

[0051] Embodiment 1, a method for strengthening pier columns by micro-section enlargement method, comprising the following construction steps:

[0052] S1. Gouging treatment on the surface of the original structure, rinse with ultra-high pressure water. In step S1, gouging treatment on the surface of the original structure, it is required that there should not be too large pits. After gouging, wash the surface with high-pressure water not less than 75Mpa. Make sure the surface is rinsed clean and free of residue.

[0053] S2. Spray new and old concrete bonding glue on the surface of the original structure to be constructed. It is required to spray evenly to activate the surface of the original concrete and promote the effective combination of new and old concrete. The use of concrete bonding glue solves the problem of the tightness of the combination of new and old concrete.

[0054]S3. Install the main reinforcement on the outside of the original structure through anchor bol...

Embodiment 2

[0062] Embodiment 2, a method for strengthening pier columns with a micro-section enlarging method. When reinforcements need to be planted, holes are drilled on the bottom of the original structure before conventional construction to place main reinforcements. Specifically, the following construction steps are included:

[0063] S1. Gouging treatment on the surface of the original structure, rinse with ultra-high pressure water. In step S1, gouging treatment on the surface of the original structure, it is required that there should not be too large pits. After gouging, wash the surface with high-pressure water not less than 75Mpa. Make sure the surface is rinsed clean and free of residue.

[0064] S2. Spray new and old concrete bonding glue on the surface of the original structure to be constructed. It is required to spray evenly to activate the surface of the original concrete and promote the effective combination of new and old concrete. The use of concrete bonding glue sol...

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Abstract

The invention discloses a tiny section expanding method pier column reinforcing method and a reinforcing structure. The tiny section expanding method pier column reinforcing method comprises the following constructing steps that S1, the surface of an original structure is roughed and washed cleanly by ultra high pressure water; S2; new and old concrete combining glue is sprayed on the surface to be constructed of the original structure; S3, a main steel bar is installed at the outer side of the original structure through anchoring bolts; and S4, 15-25mm of a first layer of concrete is sprayed on the outer side of the new and old concrete combining glue. According to the tiny section expanding method pier column reinforcing method and the reinforcing structure, the material character of high viscosity micro-expanding concrete is utilized sufficiently, and the expansion size of a section is reduced as much as possible. The problem of binding tightness of the new and old concrete is solved by utilizing the concrete combining glue.

Description

technical field [0001] The invention relates to the field of maintenance and reinforcement of structures such as bridges, tunnels, and buildings, and is a scientific and advanced technical method for structural reinforcement by using a micro-section enlarging method in civil engineering to increase rigidity. Background technique [0002] With the development of engineering construction in our country, reinforced concrete structures are widely used in engineering fields such as bridges, tunnels, and buildings. It has been nearly 40 years since the reform and opening up, and a large number of engineering buildings constructed in the early stage of the reform have gradually entered the maintenance and reinforcement cycle. Especially in urban engineering buildings, the land for many maintenance projects is tight, and it is not allowed to increase the structural section arbitrarily during the maintenance and reinforcement process, and the structural strength must be improved. ...

Claims

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Application Information

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IPC IPC(8): E04G23/02E01D22/00
CPCE01D22/00E04G23/02
Inventor 刘红波
Owner DALIAN MUNICIPAL DESIGN & RES INST
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