A kind of reinforcement method of engineering hollow member

A hollow component and engineering technology, used in bridge reinforcement, building construction, building maintenance, etc., can solve the problems of difficult construction conditions, poor structural durability, and difficult to guarantee construction quality, and achieve good reinforcement effect, convenient construction, and economical reinforcement. cost effect

Active Publication Date: 2016-04-27
巩义市相济装配构件有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Commonly used structures in engineering, such as prefabricated hollow slab bridges, small box girder bridges, etc., have experienced many diseases after years of operation, the most typical of which is cracks; traditional reinforcement methods include Sticking steel plates, carbon

Method used

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  • A kind of reinforcement method of engineering hollow member
  • A kind of reinforcement method of engineering hollow member
  • A kind of reinforcement method of engineering hollow member

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0018] Example 1

[0019] Reinforce the prestressed concrete hollow slab to improve the shear capacity, the specific implementation steps are as follows: ① Make the airbag inner mold for reinforcement, such as Figure 1-3 As shown, the inner mold 1 is included. Both ends of the inner mold 1 are respectively provided with end molds 4, the outer shape of the inner mold 1 is a rectangular parallelepiped, the end mold 4 is a rectangular parallelepiped, the inner mold 1 and the end mold 4 are connected; the inner mold 1 and the end The mold 4 forms a dumbbell-shaped hollow structure together, and the inner membrane 1 is provided with a valve 2; the length of the inner mold of the airbag is 3.0m, the cross-sectional dimension at both ends is 1.25m × 0.997m, and the middle cross-sectional dimension is 0.8m × 0.6m; ②Open a hole on the top of the prestressed concrete hollow slab 2 to form a hole 3, the size of the hole is 20cm×50cm, and place the airbag inner mold inside the prestressed co...

Example Embodiment

[0021] Example 2

[0022] The difference between Example 2 and Example 1 is: Step ③ inflate the airbag inner mold until the airbag inner mold air pressure is 6MPa; Step ④ The thickness of the concrete using layered pouring is respectively, the pouring thickness of the first layer is 15cm, The thickness of the second layer is 35cm, and the third layer is poured to the bottom of the hole 3.

Example Embodiment

[0023] Example 3

[0024] The difference between Example 3 and Example 1 is that in step ③, the airbag inner mold is inflated until the airbag inner mold air pressure is 5MPa; the thickness of the concrete in step ④ is layered and the thickness of the first layer is 10cm, The thickness of the second layer is 25cm, and the third layer is poured to the bottom of the hole 3.

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Abstract

The invention relates to a reinforcement method of a hollow component for engineering. The method comprises the following steps that (1) an air-bag inner mold is manufactured according to the section shape of the hollow component; (2) a hole is formed in the top of the hollow component, and the air-bag inner mold is placed in the hollow component; (3) the air-bag inner mold is inflated until the air pressure in the air-bag inner mold is 3 MPa-6 MPa; (4) a concrete interfacial agent is ejected to the inner wall of the hollow component to wet the inner wall of the hollow component, self-leveling concrete is poured in the space formed between the hollow component and the air-bag inner mold from the hole formed in the top of the hollow component, and concrete curing is performed; (5) the hole is repaired to complete reinforcement. According to the reinforcement method, only an original structure top plate needs to be holed, placed in the component and then used after being inflated, so that construction is convenient; compared with a traditional reinforcement method, the reinforcement effect is better, and meanwhile reinforcement cost is reduced; the concrete is poured in a layered mode, and therefore the situation that the air-bag inner mold deforms and enlarges due to pressure can be prevented; Besides, the section and size of an end mold can be adjusted to meet the reinforcement requirements of structures with different types.

Description

technical field [0001] The invention belongs to the technical field of engineering structure reinforcement, and in particular relates to a method for reinforcing a hollow component for engineering. Background technique [0002] Commonly used structures in engineering, such as prefabricated hollow slab bridges, small box girder bridges, etc., have experienced many diseases after years of operation, the most typical of which is cracks; traditional reinforcement methods include Sticking steel plates, carbon fiber cloth, etc., or pouring concrete component sections on the outer surface of the components; these reinforcement methods have difficult construction conditions on site, and the construction quality is usually difficult to guarantee, and the durability of the reinforced structure is poor. Contents of the invention [0003] The object of the present invention is to provide a method for reinforcing a hollow member for engineering with low cost and convenient reinforcemen...

Claims

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Application Information

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IPC IPC(8): E04G23/02E01D22/00
Inventor 崔润超马年祖王中平高瞻平瑞锋王世英丁建涛何保辉于营王鵾鹏郭昊菲张兴建许强吕肖林刘皓楠盛羽乔建伟王春雷王统宁侯志峰韩志勇贾克锐韩广锴唐国斌刘志科贺冬冬魏志新白涛罗伦英李玉磊
Owner 巩义市相济装配构件有限公司
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