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In-pipe circumferential prestressing repairing and reinforcing system

A repairing reinforcement and prestressing technology, applied in the direction of pipe components, pipes/pipe joints/pipe fittings, mechanical equipment, etc., can solve the problem that it is difficult to make full use of the high-strength properties of carbon fiber materials, cannot become a universally applicable method, and cannot actively use carbon fiber materials To achieve the effect of restoring bearing capacity, reducing construction time, and reducing construction volume

Pending Publication Date: 2018-07-06
NANJING HYDRAULIC RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, this method cannot be a universally applicable method
[0007] The reinforcement method in the pipe usually adopts the method of non-prestressed reinforcement. This method is usually reinforced by directly pasting carbon fiber cloth. Since the elastic modulus of carbon fiber material is similar to that of steel bar, the tensile strength is about 7 to 10 times that of steel. High strength It requires a large deformation to play, and it is difficult to make full use of the high-strength properties of carbon fiber materials for internal stickers
This method belongs to non-active force, that is, it can only play a role under the condition of external load, and it cannot actively play the role of carbon fiber material, which causes a waste of carbon fiber material performance to a certain extent.

Method used

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  • In-pipe circumferential prestressing repairing and reinforcing system
  • In-pipe circumferential prestressing repairing and reinforcing system
  • In-pipe circumferential prestressing repairing and reinforcing system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] The circumferential pre-stressed repair and reinforcement system in the pipe of this embodiment, such as figure 1 , Including: mounting plate 4, loading plate 5, through-core jack 3 and equipment platform 2; the immovable shell of the through-core jack 3 is installed on the equipment platform 2; the bottom of the equipment platform 2 also has walking wheels. A loading cone 6 is provided at the end of the penetrating jack 3 extending in the horizontal direction.

[0028] Such as figure 2 , The diameter of the mounting disk 4 is smaller than the loading disk 5; the loading disk 5 is composed of 6 fan-shaped disks, and the center has a vacant part; the arc-shaped ends of the fan-shaped disk have teeth that can be inserted into each other; on the mounting disk 4 A number of limit blocks 9 are installed by bolts, and the sector plate has strip holes extending in the radial direction; the limit blocks 9 pass through the strip holes and axially fix the sector disc on the mounting...

Embodiment 2

[0035] This embodiment is improved on the basis of Embodiment 1. Most of it is the same as Embodiment 1. The different parts are shown in Figure 4: There are several fan-shaped detachable frames 11 between the fan-shaped disc and the rubber sleeve; The detachable frame 11 is assembled into a ring shape, and the detachable frame 11 is installed on the sector plate by bolts. In order to reduce the weight of the loading plate 5, the detachable frame 11 has a number of hollowed-out weight-reducing holes; the fan-shaped plate can be designed with hollowed-out weight-reducing holes under the premise of ensuring the required rigidity, or a hollow frame structure.

[0036] Both ends of the detachable frame 11 have bolt holes; the fastening bolts installed through the bolt holes can fix the shape of the ring formed by the detachable frame 11.

[0037] The construction process is mostly the same as in Example 1, and the different parts are as follows:

[0038] Start the penetrating jack 3 and...

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PUM

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Abstract

The invention relates to an in-pipe circumferential prestressing repairing and reinforcing system which comprises a mounting disc, a loading disc, a centre hole jack, a wedge-shape loading body connected with the jack and an equipment platform. The in-pipe circumferential prestressing repairing and reinforcing system can effectively improve or enhance the capacity of bearing the interior hydraulicpressure and air pressure and the exterior negative pressure of a common concrete pipe, a prestressed concrete cylinder pipe (PCCP pipe), a circumferential tubular structure (masonry and a compositematerial body) and a polygonal cavity structure, improves the structural integrity and the durability and fully utilizes the pulled mechanical property of carbon fiber and other high-strength material. The invention of the system initiates an in-pipe prestressing method and realizes application of the method. Cooperation of all assemblies increases the range of application and improves the economical efficiency, technical nature and high efficiency.

Description

Technical field [0001] The present invention relates to a pipe inner circumferential prestress repair and reinforcement system, which belongs to the technical field of circumferential prestress, such as ordinary concrete pipe inner reinforcement, PCCP pipe inner reinforcement, steel pipe inner reinforcement, glass fiber reinforced plastic pipe inner reinforcement, indoor ring-shaped buildings, ring The inner wall of the pool, etc., are currently reinforced in the PCCP pipe, which can better exert the performance of high-strength materials and high-strength structural adhesives, and solve the problem of trenchless pipe reinforcement. Background technique [0002] PCCP is the abbreviation of Prestressed Concrete Cylinder Pipe. It refers to a tube core composed of a steel tube with socket steel rings at both ends and a concrete layer on the inner and outer sides of the steel tube, and is wound on the outer wall of the tube core A composite pipe made of pre-stressed high-strength ste...

Claims

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Application Information

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IPC IPC(8): F16L55/1645F16L55/18
CPCF16L55/1645F16L55/18
Inventor 鲁文妍高学春刘海祥陈亮龙志勇黄建红刘璨唐云清祁峰宋智通柯敏勇王建张民于凯徐芳芳陈凝
Owner NANJING HYDRAULIC RES INST