JPH09273667A - Wall piercing structure of buried pipe - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the effect even if a wall piercing structure is affected by earth pressure or water pressure on the underground side caused by unequal settlement. SOLUTION: A guide 26 is provided on the interior wall on the underground side of a through fitting 25, and a swelling rubber ring 28 in which the front surface is projected into the guide 26 and a pressing mechanism 27 by a hexagon socket head cap bolt is provided on the back surface is attached. A buried pipe 21 penetrates the through fitting 25 fitted to an opening part 23a of a wall 23 of a structure 22. In the buried pipe 21, a earth pressure plate 29 is provided on the outlet side peripheral surface of the opening part 23a of the wall 23, and the underground side end of the through fitting 25 and the earth pressure plate 29 are made into the watertight state by the swelling rubber ring 28. The earth pressure plate 29 is provided with a flange 29a having such a size that any gap is not generated in the radial direction even if the buried pipe 21 is offset to one side of the through fitting 25.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wall penetrating structure of a buried pipe that penetrates an opening provided in a wall of a structure such as a building, an underground concrete pit, a common ditch.

[0002]

2. Description of the Related Art Buried pipes are often buried in the ground through an opening provided in a wall of a structure. On the underground side of the wall of the structure, the buried pipe is subjected to earth pressure, and ground subsidence may occur, which is likely to cause uneven settlement of the buried pipe.

If the buried pipe is unevenly submerged on the underground side, the opening of the wall of the structure is damaged. Therefore, a penetration pipe such as a sheath pipe or a sleeve is usually provided in the opening of the wall. The buried pipe is penetrated through this penetrating metal to alleviate damage caused by uneven settlement.

Further, a rubber sheet is sealed between the penetrating metal object and the outer peripheral surface of the buried pipe so that ground water does not enter the structure due to water pressure generated by the uneven settlement of the buried pipe.

However, when the buried pipe is unevenly settled on the underground side, the above-mentioned rubber sheet swells inward due to the water pressure from the underground side, and finally it is damaged and groundwater enters the structure. there were.

As one of these measures, for example, Japanese Utility Model Laid-Open No. 58-114975 discloses a buried pipe sink absorption device (Prior Art 1).

FIG. 4 is a diagram showing an example of a sinking absorption device for a buried pipe. At the end of the structure 2, there is provided a wall-shaped housing 3 having an opening space 4 having a size that allows the settlement variation of the buried pipe 1a.

A buried pipe 1a located in the wall-shaped housing 3
A partition plate 5 made of steel is provided on the outer periphery of the. The partition plate 5 is slidably provided so that the opening space 4 can be maintained in the closed state even when the buried pipe 1a sinks.

Further, the front and rear portions of the opening space 4 and the buried pipe 1
A rubber sheet 6 and a rubber sheet 7 are provided on the outer periphery of a for sealing.

According to the above-described buried pipe subsidence absorbing device, the partition plate 5 prevents earth pressure and water pressure from the ground 8, and the rubber sheet 6 and the rubber sheet 7 stop water, which is suitable for a large subsidence amount. be able to.

Further, Japanese Patent Laid-Open No. 63-43087 discloses a wall penetrating structure of a buried pipe for supplying a high temperature fluid such as steam to each building.

FIG. 5 is a view showing an example of a wall penetrating structure of a buried pipe for supplying a high temperature fluid. The buried pipe 1b includes a main pipe 9a and an outer pipe 9
b. A sleeve 11 is embedded in a wall 10 that penetrates the embedded pipe 1b, and a guide sleeve 13 is concentrically provided inside the sleeve 11 via a resin mortar 12.

A ring-shaped seal tube 14 made of a flexible material is interposed between the guide sleeve 13 and the outer tube 9b.

Gas is press-fitted inside the seal tube 14, and the outer peripheral surface and the inner peripheral surface are interposed in the above-mentioned gap so that the outer peripheral surface and the inner peripheral surface are brought into close contact with the inner surface of the guide sleeve 13 and the outer surface of the outer tube 9b at appropriate pressures. There is.

A deformable tubular seal material 15 is externally inserted into the embedded side of the outer tube 9b, one end side of the tubular seal material 15 is fixed to the seal material mounting portion 16, and the other end side thereof is the outer circumference of the outer tube 9b. Is stuck to.

According to the wall penetrating structure of the above-mentioned buried pipe, it is possible to sufficiently secure the sealing property in the wall penetrating portion, and since the buried pipe is not fixed to the wall, the pipe axial direction and the through-hole radial direction. Since it can be displaced with respect to the wall, it is possible to prevent the buried pipe from being deformed or cracked in the wall due to the expansion of the buried pipe due to heat or the subsidence of the ground.

[0017]

However, the prior art 1 and the prior art 2 have the following problems.

Prior art 1 has a complicated structure. Further, in the prior art 1, since the inside of the wall-shaped housing 3 is reliably sealed from the outside by the rubber sheets 6 and 7 on both sides, when unexpected ground subsidence or the like occurs on the pipe burying side, From the inside of the wall-shaped housing 3, it is not possible to adjust the outer rubber sheet 7 in contact with the ground 8 and the partition plate 5 according to the influence of earth pressure and water pressure.
Further, even if the rubber sheet 16 and the partition plate 5 are unevenly distributed or deteriorated, it is difficult to repair them.

Prior art 2 has the same problem as prior art 1. The present invention is intended to solve the above problems, and even if the wall penetration structure is affected by earth pressure and water pressure on the underground side due to uneven settlement of the buried pipe, those effects are simplified. It is an object of the present invention to provide a wall penetrating structure for a buried pipe that can be prevented by such a structure.

[0020]

According to the present invention, in a wall penetrating structure of an embedded pipe which penetrates an opening provided in a wall of a structure, the wall penetrating structure fits a tubular penetrating object into the opening and A guide is provided on the inner wall of the bottom end of the metal object, a front surface is projected into the guide, and a swelling rubber ring equipped with a pressing mechanism is attached to the back surface, and the buried pipe is provided on the outlet side peripheral surface of the wall penetrating structure. It is a wall penetrating structure for an embedded pipe, characterized in that an earth pressure plate is provided, and the end of the penetrating metal ground side and the earth pressure plate are made watertight by the swelling rubber ring.

[0021]

Embodiments of the present invention will be described below. FIG. 1 is a cross-sectional view showing an embodiment of the present invention. FIG. 2 is a vertical sectional view taken along the line AA of FIG.

In FIG. 1, the buried pipe 21 penetrates through an opening 23a provided in a wall 23 of the structure 22 and is buried in the ground. 24 is the ground.

A tubular penetrating piece 25 is fitted into the opening 23a of the wall 23 to integrally form a wall penetrating structure.

A guide 26 is provided on the inner wall of the bottom end of the penetrating piece 25, a front surface is projected into the guide 26, and a swelling rubber ring 28 having a pressing mechanism 27 by a hexagon bolt with a hole is attached to the back surface. There is.

The guide 26 is provided with a plurality of through holes through which the pressing mechanism 27 of hexagonal bolts penetrates at equal intervals, and the hexagonal bolts are inserted into the through holes and pressed from the back surface of the swollen rubber ring 28.

On the other hand, the buried pipe 21 penetrates the penetrating metal member 25 fitted in the opening 23a of the wall 23 of the structure 22. The buried pipe 21 is provided with an earth pressure plate 29 on the outlet side peripheral surface of the opening 23a of the wall 23, and the earth side end of the penetrating metal 25 and the earth pressure plate 29 are made watertight by a swelling rubber ring 28.

The earth pressure plate 29 is provided with a flange 29a having a size such that no gap is generated in the radial direction even when the buried pipe 21 is located on one side of the penetrating piece 25.

Further, two seal members are inserted between the earth pressure plate 29 and the buried pipe 21 at intervals in the pipe axial direction,
A resin-based mortar 31 is filled between the two sealing members 30 a and 30 b in the circumferential direction of the embedded pipe 21. The seal member 30a and the seal member 30b can be removed after the resin mortar 31 is cured.

Further, as shown in FIG. 2, the earth pressure plate 29 is reinforced by a stiffening member 32 formed by radial ribs.

FIG. 3 is an enlarged view of the essential parts of the water blocking swelling rubber ring of FIG. In FIG. 3, a swelling rubber ring 2 for water stoppage
8 is freely installed in the guide 26.

The surface of the swelling rubber ring 28 for stopping water is projected from the guide 26 of the penetrating metal object 25, and the disk-shaped body 33 is provided on the back surface.
The surface of the water swelling rubber ring 28 is brought into contact with the earth pressure plate 29 by the pressing mechanism 27 using the hexagonal bolt with a hole to make the space between the earth pressure plate 29 and the penetrating metal 25 watertight. A hole 27a is formed in the head of the hexagonal bolt, and a tip end of a tightening metal fitting (not shown) is fitted into the hole 27a so that the tightening can be performed by remote control. The swelling rubber ring 28 absorbs water and swells, and cross-linked synthetic rubber or the like is used.

The operation of the present invention will be described. Buried pipe 2
In the ground 1 outside the wall penetrating structure of the structure 22, when the ground subsidence or the like causes uneven settlement, the earth pressure plate 29 integrated with the buried pipe 21 is fitted into the opening 23a of the wall 23 of the structure 22. The end of the penetrating metal piece 25 is slid through the swelling rubber 28.

Water pressure is exerted on the underground side due to unequal subsidence of the buried pipe 21, and groundwater tries to enter the penetrating metal object 25, but is absorbed by the swelling rubber 28, and the swelling rubber 28 swells to form an earth pressure plate 29. The space between the penetrating metal piece 25 is made more watertight.

Since most of the swelling rubber 28 is housed in the guide 26 and is pressed from the back surface by the hexagon bolt, it does not come off even if water pressure is applied from the outside of the penetrating metal member 25 and no gap is formed. .

Further, even if the buried pipe is inclined due to unequal settlement, it is easy to monitor the penetration piece 25 from the inside.
Immediately at an early stage, swollen rubber with hexagon socket bolts,
It can be tightened by remote control to normalize the surface pressure.

If necessary, it is possible to take measures to bring the buried pipe into a normal state at an early stage.

[0037]

As described above, according to the present invention, even if the underground pipe of the wall penetrating structure is affected by the earth pressure and water pressure due to the uneven settlement of the buried pipe, the earth pressure plate slides to the earth pressure. In addition, the ground water due to the water pressure is absorbed by the swelling rubber to make it more watertight, so that the groundwater can be prevented from entering the wall penetrating structure.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing one embodiment of the present invention.

FIG. 2 is a longitudinal sectional view taken along line AA of FIG.

FIG. 3 is a view showing a main part of mounting a swollen rubber according to the present invention.

FIG. 4 is a diagram showing an example of a conventional sinking device for buried pipes.

FIG. 5 is a view showing an example of a conventional wall penetrating structure of a buried pipe for supplying a high temperature fluid.

[Explanation of symbols]

 21 Buried Pipe 22 Structure 23 Wall 23a Opening 24 Ground 25 Penetrating Metal 26 Guide 27 Pressing Mechanism 28 Swelling Rubber Ring 29 Earth Pressure Plates 30a, 30b Sealing Member 31 Resin Mortar 32 Stiffening Material 33 Plate-like Body

Claims (1)

[Claims] 1. A wall penetrating structure of an embedded pipe penetrating an opening provided in a wall of a structure, wherein the wall penetrating structure is fitted with a tubular penetrating object in the opening, and an inner wall of an inner end of the penetrating object. A guide is provided, the front surface is projected into the guide, and a swelling rubber ring equipped with a pressing mechanism is attached to the back surface, and the earth pipe is provided on the outlet side peripheral surface of the wall penetrating structure in the embedded pipe, A wall penetrating structure for a buried pipe, characterized in that an end of a penetrating metal ground side and the earth pressure plate are made watertight by the swelling rubber ring.