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Glass fibre reinforced plastic sand inclusion push-pipe

It is a technology of glass fiber reinforced plastic sand inclusion and pipe jacking, which is applied in the direction of pipes, rigid pipes, pipes/pipe joints/pipe fittings, etc. It can solve the problem of tearing of pipe head and pipe tail, failure to ensure pipe diameter size and surface smoothness, and pipe jacking construction Pause and other issues, to achieve the effect of cost reduction

Inactive Publication Date: 2009-01-21
陕西竞业玻璃钢有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to achieve the required wall thickness of the pipe head and pipe tail, the number of layers of fiber cloth is more, resulting in an increase in cost
[0005] In addition, the outer surface of the pipe head and pipe tail of the prior art FRP sand-filled pipe jacking is a fiber layer of resin matrix. Due to the traditional processing technology, the pipe diameter size and surface smoothness cannot be guaranteed. During construction, the pipe head, pipe tail and There is an unreasonable fit gap when the casing is connected, so that the relative displacement of the two pipe ends may occur during the jacking process of the FRP sand-filled pipe, causing the casing to tilt, resulting in a rapid increase in jacking resistance
The light ones cause the sealing effect to fail, and the severe ones cause the pipe head and pipe tail to tear, and the pipe jacking construction stops

Method used

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  • Glass fibre reinforced plastic sand inclusion push-pipe
  • Glass fibre reinforced plastic sand inclusion push-pipe
  • Glass fibre reinforced plastic sand inclusion push-pipe

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] figure 2 It is a structural schematic diagram of the annular end cap of the present invention. in such as figure 2 In this embodiment shown, the reinforcing component 5 is an annular end cap, which is buckled on the ends of the pipe head and the pipe tail to cover the cross-section of the end. The research shows that the damage or even destruction of the pipe head and pipe tail during the construction of FRP sand-filled pipe jacking is largely due to the insufficient ability to withstand the jacking force. The technical solution of this embodiment adopts the reinforcing part 5 to effectively cover the pipe head and the pipe tail, and the ability to withstand the jacking force can be increased by 4 to 7 times, and the ability to withstand the jacking force of the FRP sand-filled pipe is improved. In this embodiment, the reinforcing component 5 can be a metal product, or a fiber product.

Embodiment 2

[0032] image 3 It is a structural schematic diagram of the raised annular end cap of the present invention. On the basis of the technical solution of Embodiment 1, the ring-shaped end cap of this embodiment has protrusions, which are arranged on the side connected with the end faces of the pipe head and the pipe tail. At the same time, the end faces of the pipe head and the pipe tail are provided with grooves matching the protrusions, and the protrusions are closely matched with the grooves. exist image 3 In the shown embodiment, the width of the protrusion is greater than the width of the pipe head and pipe tail sand inclusion layer, and it is a metal product. In addition to the functions and effects of Embodiment 1, this technical solution further ensures the reliability and stability of the connection between the annular end cap 5 and the end faces of the pipe head and pipe tail, and at the same time ensures that the annular end cap transmits pressure to the fibers of t...

Embodiment 3

[0034] Figure 4 It is a structural schematic diagram of the annular sleeve of the present invention. Such as Figure 4 As shown, the reinforcing part 5 of this embodiment is composed of an annular sleeve 52 and an annular end cap 51 integrally provided with it, wherein the annular sleeve 52 is sleeved on the pipe head and the end section of the pipe, and the annular end cap 51 is fastened on the pipe head and pipe tail ends, covering the section of the pipe head and pipe tail ends. The reinforcing component 5 can be a metal product or a fiber product.

[0035] In this embodiment, the reinforcing part 5 mainly composed of the annular end cap 51 and the annular sleeve 52 exerts its reinforcing effect to the greatest extent. The annular end cap 51 covers the end faces of the pipe head and the pipe tail. During the jacking construction, the annular end cap 51 The ability to withstand the jacking force is 4 to 7 times that of the pipe head and pipe tail. The annular sleeve 52 ...

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Abstract

The invention relates to a grp sand jacking pipe, comprising pipe head, pipe body and pipe trail. Concave platforms are set on outer walls of pipe head and pipe trail. The pipe heat is connected with the pipe trail by the sleeve ring on the concave platform. Basic bodies of pipe head, pipe body and pipe trail are resin and the reinforced material layer is glass fiber. The filling layer is quartz sand or calcium carbonate. Reinforced parts are set at ends of said pipe head and pipe trail. Said reinforced part comprises an annular sleeve and annular cover combined with the annular sleeve together. Annular sleeve is set on segments of pipe head and pipe trail. The annular cover is set at ends of pipe head and pipe trail, and covers end sections of pipe head and pipe trail. In optical scheme of invention, reinforced layers, which can be in or out of pipe wall, are set on pipe head and pipe trail. As the invention is designed with the structure of reinforced layer and part, the bearing ability for jacking force of grp jacking pipe is improved greatly and the cost of grp jacking pipe is decreased at the maximum extent.

Description

technical field [0001] The invention relates to a glass-steel sand-filled pipe jacking, in particular to a glass-steel sand-filled pipe jacking with a reinforcing component and a reinforcing layer structure and excellent ability to bear jacking force. Background technique [0002] In the municipal pipeline laying project, there are generally two methods: one is open large excavation, that is, the ground is fully excavated, the pipes are nested and connected to each other, and then backfilled. The pipes are prefabricated, and do not bear pressure or jacking force when connecting and laying, and the construction is relatively simple and convenient; the other way is that when limited by the specific environment, such as buildings, it is not possible to use large excavation to lay pipes , can only pre-dig the work pit. When working in the work pit, push the pipe section by section at a certain depth underground. This kind of working environment requires the end of the pipe to be...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16L9/14F16L21/00
Inventor 司金峰
Owner 陕西竞业玻璃钢有限公司