JPH0252158B2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention is applicable to water supply and sewerage, subway, telegraph cables,
Expansion/contraction flexibility of pipes to cope with joints between pipes and dissimilar structures such as underground passages, water intakes, and water discharge tunnels, expansion/contraction and flexibility phenomena during earthquakes in areas with sudden ground changes, and consolidation settlement phenomena. It is related to a coupling device, and its purpose is disclosed in Japanese Patent Application Laid-Open No. 60-33997.
The purpose of this paper is to take the technology of this issue as a general concept, make improvements thereto, combine it with a reinforcing lining body, and actually provide a more effective expansion/contraction flexible joint device for pipes.

In the past, large stretching forces and bending moments are generated in pipes on soft ground, joints between them and dissimilar structures such as vertical shafts and mineshafts, and pipes around sudden changes in the ground, and long-term uneven settlement. There are defects such as excessive force being applied to the pipes and a decrease in water-stopping durability due to the occurrence of water. Therefore, in order to deal with such problems, the present applicant has proposed an invention disclosed in Japanese Patent Application Laid-Open No. 60-33997. Although the invention described in the publication can overcome the above-mentioned difficulties to some extent, it is still insufficient. Therefore, the present invention improves the technology described in the publication as a conventionally known superordinate concept, and combines it with a reinforcing lining,
The external dimensions are approximately the same as the general part lining bodies 13, 13,
A pipe can be expanded and contracted by bonding a pair of outer and inner lining bodies 1 and 2 with a curable flexible material, which can be assembled with the same ease of construction as this, to provide water-stopping properties and elasticity. It is a flexible joint device, and the sheathing body 1 includes:
Rectangular back plate 1d whose longitudinal direction is formed into an arc shape
A rear flange 1a is fixed to the rear end of the inner surface in the longitudinal direction, and parallel to this, a front flange 1b is fixed to the middle part of the longitudinal direction of the back plate 1d. end plates 1e, 1e
is formed in the casing by standing upright, and the end plate 1
e and 1e are formed lower than the height between the rear flange 1a and the front flange 1b in the front part of the front flange 1b, and the back plates 1d,
A restraining member 1f formed with a low height is erected on the longitudinal inner surface of the front portion of the outer lining body 1d.
The inner lining body 2 to be connected to the front part of the inner surface of the back plate 2 has a rear flange 2a at the rear end in the longitudinal direction of the rectangular back plate 2d whose longitudinal direction is formed in an arc shape.
Further, a front flange 2b is fixed to the front end of the back plate 2d in the longitudinal direction, and the rear flange 2
Further, end plates 1e, 1e are arranged facing each other at both left and right ends in the longitudinal direction of the back plate 2d, and the inner lining body 2 is connected to the front part of the outer lining body 1. In the expandable flexible joint device for a pipe conduit, the outer and inner lining bodies 1 and 2 are joined together using the hardenable flexible material to form an expandable flexible joint lining body while abutting on the pipe.
The outer lining body 1 has an inner flange 1i fixed to the lower end portions of the front flange 1b and the left and right end plates 1e, 1e up to a substantially intermediate portion between the rear flange 1a and the front flange 1b, Further, between the tension member 1h and a partition plate 1f, which is installed at the front end of the end plates 1e and 1e at substantially the same height as the end plate 1e, a partition plate whose height is substantially the same as that of the partition plate 1f is provided. 1g is fixedly installed, and on the other hand, a reinforcing lining body 9 is provided which is interposed and coupled between the rear flange 1a and the front flange 1b of the outer lining body 1, and the reinforcing lining body 9 has a circular arc shape. The rear end of the rectangular rear plate 9d in the longitudinal direction is fixed to the approximately intermediate portion of the inner longitudinal direction of the rear flange 9a formed in the shape of an arc, and furthermore, the front end thereof is provided with an arc-shaped rear end. The front flange 9b is fixedly installed parallel to and facing the rear flange 9a, and is installed and fixed between the left and right end portions of the lower end of the rear flange 9a and the left and right end portions of the front flange 9b, respectively. , end plates 9e, 9e are fixed to both left and right ends of the back plate 9d, and further, an arc-shaped inner flange extends from the lower end surface of the rear flange 9a to approximately the middle portion of the end plates 9e, 9e in the front-rear direction. 9f is fixedly installed, and at the outwardly protruding portion of the rear flange 9a, a front portion of the outer lining body 1,
A notch 9a is provided for spanning the end plate 1e of the lower height portion, and the reinforcing lining body 9 is connected to the outer lining body 1.
The outer and inner linings and the reinforcing lining are assembled adjacent to the inner lining body 2 which is spaced apart from the front flange 1b and is connected to the front part of the outer lining body 1 by abutting on the front part of the outer lining body 1. It is an object of the present invention to provide an expansion and contraction flexible joint device for a pipe conduit, characterized in that it is configured such that a curable flexible material can be injected on-site into a part of the space sectioned by the construction body 9 to join it. It's something to do.

In this way, the reinforcing lining body is assembled adjacent to the inner lining body, and a hardenable flexible material is injected on-site into a part of the space defined by the outer lining body and the reinforcing lining body. , it can now be easily transformed into a water-stopping function and an expansion, contraction, rotation, and torsion behavior.

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. For convenience of explanation, conventionally known technical matters will also be explained at the same time. The outer lining body 1 is an annular piece having an arcuate length and a square cross section, and has a rear flange 1a and a front flange 1b.
Ribs 1c are arranged at equal intervals inside them at approximately the same height so that the flanges 1a, 1
b, left and right end plates 1 that circumscribe the rib 1c and whose front and rear edge surfaces do not protrude at the joint surface with the flange 1a but project forward from the joint surface with the flange 1b;
The rear plate 1d which is in contact with e and formed in an arc shape, and the front and rear flanges 1b and 1a are at the same height,
In addition, the height of the rear plate 1d located in front of the flange 1b is smaller than that of the flanges 1a and 1b.
〓-shaped left and right end plates 1e, flanges 1b, ribs 1
The inner flange 1i and flange 1a are inscribed in the inner flange 1i and flange 1a, and are inscribed in the inner flange 1i and flange 1a. , 1b, partition plates 1f, 1g, and 1f, 1b are arcuate in height and are in contact with the inner surfaces of the back plate 1d and the end plate 1e.
This is a lining structure in which a restraining material 1h having an arcuate shape and having a height lower than or equal to g and abutting against the inner surfaces of the back plate 1d and the end face plate 1e are integrally formed.

The inner lining body 2 is an annular piece whose longitudinal length is arcuate and whose cross section is truncated, and includes a rear flange 2a,
Ribs 2c are arranged at equal intervals inside the front flanges 2b at substantially the same height so that the front flanges 2b are parallel to each other. This is a lining structure in which a back plate 2d formed in an arcuate shape, circumscribing the rear flange 2a, circumscribing the rear flange 2a, and fitting inside the front flange 2b are integrally formed.

The reinforcing lining body 9 has an arcuate longitudinal length and a cross section of
An annular piece formed in the shape of a rear flange 9
a, ribs 9a are arranged at equal intervals at substantially the same height inside the front flanges 9b so that they are parallel;
The rib 9 is in contact with a rectangular end plate 9e that is in contact with the rear flange 9a and the front flange 9b on the left and right sides.
c, and fits inside the rear flange 9a,
A back plate 9d circumscribed to the front flange 9b and formed in an arc shape, and inscribed in the flange 9a and the rib 9c, the front side extends to the middle part of the rib 9c, and the rear side does not protrude at the joint surface with the flange 9a. End plate 9e
an inner flange 9f formed in an arc shape in contact with the inner flange 9f;
are the lining structures formed integrally with each other.

End plates 1e, 2 of the outer, inner lining and reinforced lining
Holes 3, 3', and 3'' drilled in holes e and 9e are holes for fastening to the left and right outer, inner lining and reinforcing lining bodies that are adjacent in the circumferential direction. The hole 3 drilled in the end plate 1e of the work body is made at a height forward of the front flange 1b in the end plate 1e in order to increase the tightening effect of sealing material etc. when connecting the adjacent left and right outer cladding bodies. It is desirable that the holes 10 and 10' are provided at appropriate intervals even in the lower parts of the sheet 1.
9 between shelf materials 20, 21 and bolts 22, 22'
This is a through hole for fastening to the outer lining body 1 and the reinforcing lining body 9.

Further, the holes 5, 5 penetrating the facing flanges 1b, 2a of the outer and inner lining bodies 1, 2 are connected to the connecting rod 8 that holds and connects the outer and inner lining bodies 1, 2 in parallel with a required width. It is a through hole.

As shown in FIG.
in front of this and the rear flange 2a of the inner lining body 2.
are parallel and separated by the required amount, the back plate 1d
With the flange 2b protruding forward from the front end of the flange 2b, the left and right end plates 1e and 2e each form one plane, and the front and rear ribs 1c and 2c form one plane in the axial direction of the lining body. With this configuration, the expandable flexible joint lining made up of a pair of outer and inner linings can have approximately the same external shape and dimensions as the front and rear general portion linings.

A pair of outer and inner lining bodies 1 and 2 formed as described above
It is possible to easily assemble the inner lining body 2 by simply abutting the inner lining body 2 inside the outer lining body 1. At this time, an arc-shaped gap securing forming member 6 having a width up to the front flange 2b of the inner lining body is attached to the front of the outer lining body partition plate 1f at substantially the same height as this. This gap securing forming material 6 can withstand the pressure during injection of the curable flexible material 7 described later, but cannot withstand compressive displacement in the front-rear direction or rotational displacement that would reduce the space after the completion of the pipe conduit. Use materials that can be compressed or destroyed. The curable flexible material is a substance that remains flexible even after being cured after being injected, and is made of urethane resin, silicone resin, polysulfide resin, or the like. In addition, the void securing material refers to a foam material such as polyurethane foam, urethane foam, styrene foam, urea foam, etc., or a composite material in which at least two or more of these foam materials are combined, and the outer surface of these foams has the above-mentioned hardenability. A substance coated with a flexible material.

A pair of outer and inner lining bodies 1 assembled as described above,
2, the flange 2b of the inner lining body, the back plate 2d, and the partition plate 1 of the outer lining body.
In the space surrounded by f and 1g, the left and right open ends are made of a curable flexible material that maintains sufficient elasticity and water-stopping properties by abutting a formwork with a flat surface that somewhat protrudes from the end plates 1e and 2e. 7 is injected through an injection hole drilled in one of the molds. At this time, the surfaces in contact with the hardenable flexible material of the outer and inner lining bodies are treated in advance by removing dirt, etc., and then an appropriate primer is applied to the hardenable flexible material by subsequent injection. Ensure sufficient adhesion with the material.

In this way, the assembled flexible joint lining body is connected to the general part lining body 13 by the connecting rod 8.
It maintains the same rigidity as 13', and can be transported and assembled on site without any difference. Bolts 14 inserted into the fastening holes 4 of the front flange 13a of the rear general lining body 13 and the rear flange 1a of the outer lining body, and the left and right fastening holes 3, 3' of the expansion flexible joint lining body. The telescopic flexible joint lining body is tightly connected to the rear lining body 13' by the inserted bolts 15,
In addition, the ring closure of the flexible joint lining body can be performed in the same manner as the general part lining body 13. Next, the inner lining body 2, the fastening hole 4 of the front flange 2b, and the front general part lining body 1
Bolt 1 inserted through rear flange 13a' of 3'
4', the expandable flexible joint lining body is also tightly connected to the front general section lining body 13'. During this time, the curable flexible material 7 is firmly adhered at the contact surfaces with the outer and inner lining bodies as described above, and the left and right joint surfaces have protrusions as shown in FIG. Water stoppage can be ensured by the elastic repulsive force obtained by the contact of the surfaces, by the adhesive force of the flexible material itself, by other adhesives, or by the synergistic effect thereof.

Further, the reinforcing lining body 9 is assembled adjacent to the front inner lining body 2 with the left and right joint positions shifted from the inner lining body 2, and the fastening hole 5'' of the front flange 9b is assembled.
The reinforcing lining body is connected to the front inner lining body by the bolts 14″ inserted into the rear flange 2a of the front inner lining body 2, and the bolts 15 inserted into the left and right fastening holes 3″ of the reinforcing lining body. 2, and the ring closure of the reinforcing lining body can be performed in the same manner as the general part lining bodies 13, 13'.

The on-site injection hardening flexible material 17 includes an outer lining structure partition plate 1g, a restraining material 1h, a gap securing forming material 15,
This is a curable flexible material that is injected on-site into the space surrounded by the reinforcing lining back plate 9d and the rear flange 9a. Also, in-place cureable flexible material 18
is injected on-site into a space surrounded by the rear flange 9a of the reinforced lining body, the front flange 1b of the outer lining body, the back plate 1d, and the waterproof sheet 19, excluding the gap securing forming material 16' wrapped with the airtight sheet 16. It is a curable flexible material. Thus, the injected flexible material hardens over time and is firmly bonded to the expansion flexible joint lining structure, forming a permanent water stop layer, and
The flexible joint body is constructed so that it can operate without resistance to expansion and contraction rotation.

In addition, the flexible joint structure configured as shown in Figs. 4, 5, 6, 7, and 8 is able to withstand external loads such as earth pressure and water pressure through the outer, inner lining bodies 1 and 2, and reinforced lining. The body 9 and the shelf materials 20, 21, 25, 26 provide resistance, and the curable flexible materials 7, 17 and waterproof sheets 19, 24 ensure water stoppage. In this case, shelf materials 20, 21, 2
5 and 26 play the role of preventing deformation of the waterproof sheets 19 and 24. Furthermore, waterproof sheet 2 is also used against internal water pressure.
4, 19 to ensure water stoppage. At this time, shelf material 2
0 and 21 serve to prevent the waterproof sheet 24 from deforming. When displacement occurs in a pipe culvert due to uneven subsidence of the ground, expansion/contraction rotation due to seismic force, or a combination thereof, the expandable flexible joint lining constructed as described above will move at the interface between the flexible materials 7 and 17. It can be freely deformed while maintaining its adhesive strength, and can easily follow expansion/contraction deformation, rotational deformation, or a combination thereof due to the volume change of the void securing forming members 6, 15, and can maintain water-stopping properties. Of course,
General lining bodies 13, 13' before and after the outer and inner lining bodies
The joint surfaces, left and right outer linings, and the inner linings shall be water-tight with water-stopping material in the same way as for the general linings.

Next, in the above-mentioned amount of elongation displacement, if an expansion or contraction exceeding the phase amount is about to occur, the restraint material 1h placed a predetermined distance apart, the flange 9 of the reinforcing lining body
This is to prevent excessive extension from occurring and the outer and inner lining from falling off.
On the other hand, during compression displacement, if a considerable amount of compression or more is about to occur, the outer lining body partition plate 1
This is designed to prevent excessive compressive displacement from occurring due to contact of the inner lining flange 2b. Conventionally, it has been found that twisting around the pipe axis cannot be ignored, and the present invention has a structure that can absorb this twisting deformation at the same time. That is, by providing a notch 9a' in the rear flange 9a of the reinforcing lining body 9, as shown in FIG. It is possible to twist and deform in either the left or right direction.

〔Effect of the invention〕

As described above, the flexible joint device for a pipe conduit according to the present invention can easily absorb deformation due to expansion/contraction, bending, and twisting, or a combination thereof, and contributes to permanent water-tightness. .
As a result, by installing expandable flexible joints at appropriate intervals around joints between pipe culverts and dissimilar structures such as shafts and mineshafts, around sudden changes in the ground, and for pipes in soft ground, It is possible to reduce the adverse effects on the pipes caused by uneven settlement or earthquakes, and to maintain the structural strength and water-stopping properties of the pipes.

In addition, in the above-mentioned embodiment, the expansion and contraction flexible joint structure of pipes using the shield construction method was mainly targeted, and the applicability to sewers, subways, telecommunication facility tunnels, public ditches, and water intake and discharge pipes was explained. However, it goes without saying that the present invention can also be applied to polygonal, rectangular, etc. cross sections, or to the propulsion construction method.

[Brief explanation of the drawing]

The figures show an embodiment of the present invention. Figure 1 is a slope view of the outer and inner linings that make up the flexible joint lining, Figure 2 is an assembled slope view of the same, and Figure 3 is a reinforced lining. Figure 4 is a vertical cross-sectional view showing an example of the completed state of the secondary lining concrete and water-stop material near the expansion flexible joint lining body, and Figures 6, 7, and 8. A of
- A cross-sectional view, Figure 5 is a B-B cross-sectional view, Figure 6
The figures are a sectional view taken along the line CC in FIGS. 4 and 5, FIG. 7 is a sectional view taken along the line DD, and FIG. 8 is a sectional view taken along the line EE. Explanation of symbols, 1... Outer lining body, 1a... Rear flange, 1b... Front flange, 1c... Rib,
1d... Back plate, 1e... End plate, 1f... Partition plate, 1g... Partition plate, 1h... Inhibition material, 1i
... Inner flange, 2 ... Inner lining body, 2a ... Rear flange, 2b ... Front flange, 2c ... Rib, 2d ... Back plate, 2e ... End plate, 3, 3'
...Outside, inner lining body left and right fastening holes, 3''...Reinforced lining body left and right fastening holes, 4,4'...Outside, inner lining body back,
Front fastening hole, 5, 5'...Front, rear fastening hole,
6... Gap securing forming material, 7... Curable flexible material, 8... Connection rod, 9... Reinforcement lining body, 9a...
Rear flange, 9a'...Rear flange notch, 9
b...front flange, 9c...rib, 9d...rear plate, 9e...end plate, 9f...inner flange,
10...Waterproof sheet, shelf board fastening hole, 11...Hardenable flexible material injection hole, 12...Air vent hole when hardenable flexible material is injected, 13, 13'...Rear, front general part cover Construction body, 13a...Front flange of the rear general section lining body, 13a'...Rear flange of the front general section lining body, 14, 14', 14'', 15... Bolts,
16... Airtight sheet, 16'... Gap securing forming material,
17, 18... curable flexible material, 19... first
Tier waterproof sheet, 20...First tier rear shelf material, 21...
...First stage front shelf material, 22, 22'...Bolt, 2
3... Gap securing forming material, 24... Waterproof sheet, 2
5... Second stage rear shelf material, 26... Second stage front shelf material, 27, 27'... Bolt, 28, 28'...
Rear, front secondary lining concrete.

Claims (1)

[Scope of Claims] 1. A pair of outer and inner lining bodies 1 and 2, which have approximately the same external dimensions as the general part lining bodies 13 and 13 and can be assembled with similar workability, is made of a hardenable flexible material. This is a flexible joint device for a pipe conduit that is bonded to provide water-stopping properties and expandable flexibility, and the outer lining body 1
A rear flange 1a is provided at the rear end in the longitudinal direction of the inner surface of the rectangular back plate 1d whose longitudinal direction is formed in an arc shape.
is fixedly installed, and a front flange 1b is fixedly installed parallel to this at a longitudinally intermediate portion of the back plate 1d,
Further, end plates 1e, 1 are provided at the left and right ends of the back plate 1d.
e is formed in the casing by standing up, and the end plate 1
e and 1e are formed lower than the height between the rear flange 1a and the front flange 1b in the front part of the front flange 1b, and the back plates 1d,
A restraining member 1f formed with a low height is erected on the longitudinal inner surface of the front portion of the outer lining body 1d.
The inner lining body 2 to be connected to the front part of the inner surface of the back plate 2 has a rear flange 2a at the rear end in the longitudinal direction of the rectangular back plate 2d whose longitudinal direction is formed in an arc shape.
Further, a front flange 2b is fixed to the front end of the back plate 2d in the longitudinal direction so as to face the rear flange 2a in parallel, and end plates are provided at both left and right ends of the back plate 2d in the longitudinal direction. 1e and 1e are stood upright facing each other, and while the inner lining body 2 is brought into contact with the front part of the outer lining body 1, the outer and inner lining bodies 1 and 2 are made of the hardenable flexible material. In the extensible flexible joint device for a pipe, which is connected to form an extensible flexible joint lining body, the outer lining body 1 extends to approximately the middle portion between the rear flange 1a and the front flange 1b. , an inner flange 1i is fixed to the lower end of the front flange 1b and the left and right end plates 1e, 1e, and the height of the end plate 1e is fixed to the front end of the tension member 1h and the end plates 1e, 1e. Partition plate 1f installed almost identically to the
and a partition plate 1 having substantially the same height as the partition plate 1f.
g is fixedly installed, while the rear flange 1 of the outer lining body 1
A reinforcing lining body 9 is provided to be interposed and coupled between the front flange 1b and the front flange 1b, and the reinforcing lining body 9 is connected to the longitudinal rear end portion of the rectangular back plate 9d formed in an arc shape. is fixed to a substantially middle portion of the longitudinally inner side of the rear flange 9a formed in an arc shape, and furthermore, an arc-shaped front flange 9b is fixed to the front end thereof facing parallel to the rear flange 9a. At the same time, end plates 9e, 9e are attached to both left and right ends of the back plate 9d so as to be installed and fixed between the left and right ends of the lower end of the rear flange 9a and the left and right ends of the front flange 9b. and furthermore,
An arc-shaped inner flange 9f is fixed from the lower end surface of the rear flange 9a to approximately the middle portion of the end plates 9e, 9e in the front-rear direction, and an outer lining is provided at the outwardly protruding portion of the rear flange 9a. A notch 9a is provided for straddling the end plate 1e at a lower height portion in the front part of the reinforcing lining body 9.
assembled adjacent to the inner lining body 2 which has a constant distance from the front flange 1b of the outer lining body 1 and is connected to the front part of the outer lining body 1,
Expansion/contraction of a pipe characterized by being configured such that a hardening flexible material can be injected on-site into a part of the space defined by the outer and inner lining bodies and the reinforcing lining body 9 to join them. Flexible joint device. 2 Adjacent to the inner lining body 2, the back side of the reinforcing lining body 9 assembled in a staggered manner with the inner lining body 2 is the installation space for the blank-forming material to be attached in a later process, and the on-site area in a later process. 2. The expansion flexible joint device for a pipe conduit according to claim 1, wherein a space for the curable flexible material to be injected is formed between the lining body and the outer lining body. 3 A hardenable flexible material is integrally injected at the site except for the forming material that secures air space in the space sectioned by the outer and inner lining bodies and the reinforced lining body 9, and after hardening, a permanent water stop layer is formed. The flexible joint device for a pipe conduit according to claim 1, which is configured to have the following functions. 4 As a slip-off prevention device for the outer and inner lining bodies, the restraining material 1f of the outer lining body 1 and the rear flange 9a of the reinforcing lining body 9 assembled adjacent to the inner lining body 2 are in contact with each other. Furthermore, a notch 9a is provided in advance at the rear flange 9a of the reinforced lining body 9 at the intersection with the front part of the end plate 1e of the outer lining body 1. 2. The flexible flexible joint device for a pipe conduit according to claim 1, wherein the flexible joint device is configured to be straddled over the end plate 1e of the pipe.