CN210461992U

CN210461992U - Expansion joint waterproof structure for seawater high-water-pressure concrete pipeline

Info

Publication number: CN210461992U
Application number: CN201921270263.9U
Authority: CN
Inventors: 赵迪; 靳金平; 隋春光; 王健
Original assignee: China Nuclear Power Engineering Co Ltd
Current assignee: China Nuclear Power Engineering Co Ltd
Priority date: 2019-08-07
Filing date: 2019-08-07
Publication date: 2020-05-05
Anticipated expiration: 2029-08-07

Abstract

The utility model discloses an expansion joint waterproof construction for sea water crowning water pressure concrete pipe, include: the waterproof device comprises a water stop arranged in the expansion joint, a first waterproof protective layer arranged on the water facing side of the water stop of the expansion joint, and a wrapping piece arranged outside the first protective layer and used for waterproofing, wherein the wrapping piece is wrapped outside the first protective layer. The utility model provides an expansion joint waterproof construction for sea water crowning water pressure concrete pipe, easily construction, simple, effective can guarantee the original service function of expansion joint, again can be safe, effective, permanent waterproof purpose of reaching for concrete pipe still can have good waterproof efficiency under the pipeline medium area high pressure and has the corrosive action's of sea water the condition, and later stage easy maintenance.

Description

Expansion joint waterproof structure for seawater high-water-pressure concrete pipeline

Technical Field

The utility model belongs to the technical field of the expansion joint is waterproof, concretely relates to expansion joint waterproof construction for high water pressure concrete pipeline in sea water.

Background

In a nuclear power plant, a plurality of pipelines with reinforced concrete structures are provided, and are characterized in that the pipelines are buried underground, have super-long lengths, are pressure pipelines and are seawater mediums. In order to avoid the problems of structural crack damage, geological condition change, connection with various plants and structures and the like caused by the change of weather temperature (thermal expansion and cold contraction) due to overlong length, structural joints, namely expansion joints, are inevitably arranged on the reinforced concrete structural pipelines. The general expansion joint has a joint width of 20-30 mm, and is internally provided with a water stop and filled with joint filling materials or is externally added with an omega-shaped water stop.

The expansion joint is a traditional expansion joint of an underground reinforced concrete structure pipeline, although the expansion joint can play a role in water prevention, the waterproof effect is not ideal under the condition of pressure in the pipeline, particularly under the condition of higher pressure, and the condition that joint filling materials are brought out along with pressure media is accompanied.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that to the above-mentioned not enough that exists among the prior art, provide an expansion joint waterproof construction that is used for high water pressure concrete pipe in sea water, can guarantee the original service function of expansion joint, again can be safe, effective, permanent reach waterproof purpose.

Solve the utility model discloses technical scheme that technical problem adopted provides an expansion joint waterproof construction for high water pressure concrete pipeline in sea water, include: set up the waterstop in the expansion joint, set up being used for waterproof first protective layer, set up and be used for waterproof cladding piece outside first protective layer in the meeting water side of expansion joint waterstop, first protective layer is filled in the expansion joint, cladding piece cladding outside first protective layer.

Preferably, the covering member comprises: the inner cladding piece is close to the water stop, the outer cladding piece is arranged on the inner cladding piece and is far away from the water stop, and the inner cladding piece is connected with the outer cladding piece.

Preferably, the inner covering member is embedded in the wall of the concrete pipe.

Preferably, the inner wrapper is face-bonded to the outer wrapper.

Preferably, the covering further comprises: the connecting piece, interior cladding piece passes through the connecting piece and is connected with outer cladding piece, and the connecting piece includes: the bolt and the fixing piece are arranged on the backwater side of the inner cladding piece, the inner screw matched with the bolt is arranged on the fixing piece, the first screw hole is formed in the outer cladding piece, the second screw hole is formed in the inner cladding piece, and the bolt penetrates through the first screw hole and the second screw hole to be in threaded connection with the inner screw on the fixing piece.

Preferably, the inner wrapper comprises: the first inner cladding piece and the second inner cladding piece are respectively positioned at two sides of the expansion joint, and the outer cladding piece is connected with the first inner cladding piece or the second inner cladding piece positioned at one side of the deformation joint.

Preferably, the inner cladding and the outer cladding are stacked alternately in the radial direction of the concrete pipeline, and the orthographic projection view of the expansion joint is in the overlapping area of the orthographic projection views of the inner cladding and the outer cladding.

Preferably, the number of the inner cladding pieces is at least two, the number of the outer cladding pieces is at least two, and the number of the outer cladding pieces is the same as that of the inner cladding pieces along the radial direction of the concrete pipeline.

Preferably, the material of the covering member is stainless steel.

Preferably, the first protective layer includes: the inner protective layer is close to the water stop, and the outer protective layer is arranged on the inner protective layer and is far away from the water stop, wherein the inner protective layer is a foam plastic plate, and the outer protective layer is sealing paste.

The utility model provides an expansion joint waterproof construction for sea water crowning water pressure concrete pipe, easily construction, simple, effective can guarantee the original service function of expansion joint, again can be safe, effective, permanent waterproof purpose of reaching for concrete pipe still can have good waterproof efficiency under the pipeline medium area high pressure and has the corrosive action's of sea water the condition, and later stage easy maintenance.

Drawings

Fig. 1 is a schematic structural view of an expansion joint waterproof structure for a high water pressure concrete pipeline in seawater in embodiment 2 of the present invention;

fig. 2 is a sectional view of an a-a of the expansion joint waterproof structure for a high hydraulic pressure concrete pipe in seawater in embodiment 2 of the present invention.

In the figure: 1-expansion joint; 2-water stop belt; 3-the water-facing side of the water stop belt; 4-a first protective layer; 5-inner cladding; 6-a first inner wrapper; 7-a second inner wrapper; 8-an outer wrapper; 9-the trench wall of the concrete pipe; 10-anchor bars; 11-a bolt; 12-a fixing member; 13-an inner protective layer; 14-an outer protective layer; 15-second protective layer.

Detailed Description

In order to make the technical solution of the present invention better understood by those skilled in the art, the present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

Reference will now be made in detail to embodiments of the present patent, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present patent and are not to be construed as limiting the present patent.

Example 1

This embodiment provides an expansion joint waterproof construction for high water pressure concrete pipe in sea water, includes: set up the waterstop in the expansion joint, set up being used for waterproof first protective layer, set up and be used for waterproof cladding piece outside first protective layer in the meeting water side of expansion joint waterstop, first protective layer is filled in the expansion joint, cladding piece cladding outside first protective layer.

An expansion joint waterproof construction for sea water well high water pressure concrete pipe in this embodiment, easily construction, it is simple, effective, can guarantee the original service function of expansion joint, again can be safe, effective, permanent reach waterproof purpose for concrete pipe still can have good waterproof efficiency under the pipeline medium area high pressure and has the corrosive action of sea water, and later stage easy maintenance.

Example 2

As shown in FIGS. 1-2, the embodiment provides a waterproof structure of expansion joint for high water pressure concrete pipeline in seawater, includes: set up waterstop 2 in expansion joint 1, set up and be used for waterproof first protective layer 4, set up and be used for waterproof cladding piece outside first protective layer 4 in the 3 sides of meeting water of expansion joint 1 waterstop, first protective layer 4 is filled in expansion joint 1, cladding piece cladding outside first protective layer 4.

It should be noted that the covering member in this embodiment includes: the water-stop belt comprises an inner wrapping piece 5 close to the water-stop belt 2 and an outer wrapping piece 8 arranged on the inner wrapping piece 5 and far away from the water-stop belt 2, wherein the inner wrapping piece 5 is connected with the outer wrapping piece 8.

It should be noted that the inner covering member 5 in this embodiment is embedded in the trench wall 9 of the concrete pipe. Specifically, the inner covering member 5 in this embodiment is embedded in the groove wall 9 of the concrete pipe via the anchor bars 10.

In the present embodiment, the inner wrapper 5 and the outer wrapper 8 are surface-bonded. Specifically, the inner cladding piece 5 in this implementation is a steel plate, the outer cladding piece 8 is a steel plate, the flatness of the steel plate ensures the surface-to-surface fitting effect of the inner cladding piece 5 and the outer cladding piece 8, the gap between the steel plates is reduced, and the sealing effect between the two is ensured.

It should be noted that, the covering member in this embodiment further includes: the connecting piece, interior cladding 5 passes through the connecting piece to be connected with outer cladding 8, and the connecting piece includes: the bolt 11, set up the mounting 12 in the side of the internal cladding 5 that is against the water, be provided with the internal screw with bolt 11 matched with on the mounting 12, be provided with first screw on the external cladding 8, be provided with the second screw on the internal cladding 5, bolt 11 passes first screw, the second screw and the internal screw spiro union on the mounting 12. The bolt 11 is used for connecting and fixing, so that the disassembly is convenient, and the later replacement and maintenance are facilitated.

Preferably, the inner wrapper 5 includes: the first inner cladding piece 6 and the second inner cladding piece 7 are respectively positioned at two sides of the expansion joint 1, and the outer cladding piece 8 is connected with the first inner cladding piece 6 or the second inner cladding piece 7 positioned at one side of the deformation joint. Specifically, in the present embodiment, the outer cladding member 8 is connected to the first inner cladding member 6 located on one side of the deformation joint, and the outer cladding member 8 is clad on and pressed against the second inner cladding member 7. The first inner cladding member 6 is provided with a second screw hole.

Specifically, the expansion joint 1 is arranged in the radial direction of the concrete pipeline. The inner coating piece 5 is connected with the outer coating piece 8 through the first connecting piece, the first connecting piece is only positioned on one side of the expansion joint 1, namely, the joint of the inner coating piece 5 and the outer coating piece 8 is only positioned on one side of the expansion joint 1, and the joint does not have any connection relation with the groove wall 9 of the concrete pipeline on the other side of the expansion joint 1, so that the concrete pipeline cannot be constrained to stretch along the longitudinal direction, and the expansion joint 1 still has a stretching effect on the concrete pipeline along the longitudinal direction of the groove.

As shown in fig. 2, it should be noted that, in the present embodiment, the inner cladding 5 and the outer cladding 8 are stacked alternately along the radial direction of the concrete pipe, and the orthographic projection view of the expansion joint 1 is in the overlapping area of the orthographic projection views of the inner cladding 5 and the outer cladding 8.

Preferably, the inner packing 5 is at least two, the outer packing 8 is at least two, and the number of the outer packing 8 is the same as the number of the inner packing 5 in the radial direction of the concrete pipe. Specifically, the concrete pipe in this embodiment is a circular pipe. Along the periphery of concrete pipe, at the inboard of the concrete pipe's of the both sides at expansion joint 1 ditch wall 9, each pre-buried round inner coating 5 in concrete pipe's surface, every circle inner coating 5 is for the four blocks of equalling divide along concrete pipe's periphery, weld a mounting 12 on the pre-buried inner coating 5 of the ditch wall 9 of one of them side concrete pipe every preset distance, mounting 12 is the stainless steel piece, then punch and the tapping forms the internal screw on mounting 12. The bolt 11 passes through the first screw hole and the second screw hole to be in threaded connection with the inner screw thread on the fixing piece 12, so that the outer cladding piece 8 is fixed on the inner cladding piece 5. And along the periphery of the concrete pipeline, a circle of outer cladding 8 is arranged to be clad on the inner cladding 5, each circle of outer cladding 8 is four blocks which are equally divided along the periphery of the concrete pipeline, the outer cladding 8 and the inner cladding 5 are overlapped in a staggered mode, and along the radial direction of the concrete pipeline, the orthographic projection view of the expansion joint 1 is in the overlapping area of the orthographic projection view of the inner cladding 5 and the orthographic projection view of the outer cladding 8. Because outer cladding 8 and interior cladding 5 crisscross superpose are connected, can more effectively carry out waterproof, prevent that the sea water from getting into in the expansion joint 1.

The material of the covering member in this embodiment is stainless steel. The stainless steel cladding piece is an exposed component, effectively resists seawater corrosion, and prolongs the service life. Specifically, the inner packing member 5 in this embodiment is a stainless steel plate, the outer packing member 8 is a stainless steel plate, and the inner packing member 5 and the outer packing member 8 are attached to each other in a face-to-face manner, so that water can be effectively prevented. The bolt 11 in this embodiment is made of stainless steel.

Note that, the first protective layer 4 in this embodiment includes: the water-stop belt comprises an inner protection layer 13 close to the water-stop belt 2 and an outer protection layer 14 arranged on the inner protection layer 13 and far away from the water-stop belt 2, wherein the inner protection layer 13 is a foam plastic plate, and the outer protection layer 14 is sealing paste. Specifically, the first inner cladding 6 and the second inner cladding 7 in the embodiment are respectively located on two sides of the outer protective layer 14 along the longitudinal direction of the concrete pipeline. The sealing paste is polysulfide sealing paste. The cladding piece in this embodiment has guaranteed that the polysulfide sealant is not carried over by the sea water under the high water pressure to the waterproof effect of expansion joint 1 play has been ensured. Specifically, the backwater side of the water stop 2 in this embodiment is provided with a second protective layer 15 for water prevention, the second protective layer 15 is filled in the expansion joint 1, and the second protective layer 15 is a foam plastic plate.

The embodiment provides a construction method of the expansion joint waterproof structure for the high-water-pressure concrete pipeline in seawater, which comprises the following steps:

pouring a concrete groove wall on one side of the expansion joint 1 along the longitudinal direction of the concrete pipeline, simultaneously embedding an inner coating piece 5 on the concrete groove wall on one side of the expansion joint 1, filling an inner protective layer 13 foam plastic plate when pouring the concrete groove wall, filling an outer protective layer 14 polysulfide sealant after the concrete groove wall is finished, then pouring the concrete groove wall on the other side of the expansion joint 1, simultaneously embedding the inner coating piece 5 on the concrete groove wall on one side of the expansion joint 1, finally fixing the outer coating layer on the inner coating layer by using a stainless steel bolt 11, and finally sealing the outer protective layer 14 polysulfide sealant.

An expansion joint waterproof construction for sea water well high water pressure concrete pipe in this embodiment, easily construction, it is simple, effective, can guarantee expansion joint 1's original service function, again can be safe, effective, permanent reach waterproof purpose for concrete pipe still can have good waterproof efficiency under the pipeline medium area high pressure and has the corrosive action of sea water's the condition, and later stage easy maintenance.

It is to be understood that the above embodiments are merely exemplary embodiments that have been employed to illustrate the principles of the present invention, and that the present invention is not limited thereto. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit and substance of the invention, and these modifications and improvements are also considered to be within the scope of the invention.

Claims

1. The utility model provides an expansion joint waterproof construction for high water pressure concrete pipe in sea water which characterized in that includes: set up the waterstop in the expansion joint, set up being used for waterproof first protective layer, set up and be used for waterproof cladding piece outside first protective layer in the meeting water side of expansion joint waterstop, first protective layer is filled in the expansion joint, cladding piece cladding outside first protective layer.

2. The waterproof structure for an expansion joint of a high-hydraulic-pressure concrete pipeline in seawater as claimed in claim 1, wherein the covering member comprises: the inner cladding piece is close to the water stop, the outer cladding piece is arranged on the inner cladding piece and is far away from the water stop, and the inner cladding piece is connected with the outer cladding piece.

3. The waterproof structure for the expansion joint of the high-water-pressure concrete pipeline in seawater as claimed in claim 2, wherein the inner coating member is embedded in the wall of the concrete pipeline.

4. The waterproof structure for the expansion joint of the high-water-pressure concrete pipeline in seawater as claimed in claim 2, wherein the inner coating member is attached to the surface of the outer coating member.

5. The waterproof structure for an expansion joint of a high-water-pressure concrete pipeline in seawater as claimed in claim 2, wherein the covering member further comprises: the connecting piece, interior cladding piece passes through the connecting piece and is connected with outer cladding piece, and the connecting piece includes: the bolt and the fixing piece are arranged on the backwater side of the inner cladding piece, the inner screw matched with the bolt is arranged on the fixing piece, the first screw hole is formed in the outer cladding piece, the second screw hole is formed in the inner cladding piece, and the bolt penetrates through the first screw hole and the second screw hole to be in threaded connection with the inner screw on the fixing piece.

6. The waterproof structure for the expansion joint of the high-water-pressure concrete pipeline in seawater as claimed in any one of claims 2 to 5, wherein the inner coating member comprises: the first inner cladding piece and the second inner cladding piece are respectively positioned at two sides of the expansion joint, and the outer cladding piece is connected with the first inner cladding piece or the second inner cladding piece positioned at one side of the deformation joint.

7. The waterproof structure for the expansion joint of the seawater high water pressure concrete pipeline as claimed in any one of claims 2 to 5, wherein the inner cladding and the outer cladding are overlapped in a staggered manner along the radial direction of the concrete pipeline, and the orthographic view of the expansion joint is in the overlapping area of the orthographic view of the inner cladding and the orthographic view of the outer cladding.

8. The waterproof structure for expansion joints of high-water-pressure concrete pipelines in seawater as claimed in claim 7, wherein the number of the inner cladding pieces is at least two, the number of the outer cladding pieces is at least two, and the number of the outer cladding pieces is the same as that of the inner cladding pieces.

9. The waterproof structure for the expansion joint of the seawater high water pressure concrete pipeline as claimed in any one of claims 1 to 5 and 8, wherein the coating member is made of stainless steel.

10. The waterproof structure for the expansion joint of the high-water-pressure concrete pipeline in the seawater as claimed in any one of claims 1 to 5 and 8, wherein the first protective layer comprises: the inner protective layer is close to the water stop, and the outer protective layer is arranged on the inner protective layer and is far away from the water stop, wherein the inner protective layer is a foam plastic plate, and the outer protective layer is sealing paste.