KR100261979B1 - Pipe protecting sleeve, and structure and method of connecting pipe to underground using the same - Google Patents

Abstract

The present invention relates to a tube protection sleeve disposed in a hole in a wall of an underground structure and into which a tube is inserted. The tube protection sleeve has a covering opening portion having an inner diameter larger than the outside diameter of the pipe, and at one end of the covering opening portion, the pipe fixing sleeve prevents movement in the tube axis direction and the radial direction with respect to the outer periphery of the pipe. It is characterized by forming a.

According to the tube protective sleeve of the above-described configuration, when the tube and the optical protective sleeve are fixed to the wall of the substructure by mortar or the like, the tube and the optical protective sleeve do not move relatively in the tube axis direction, and the tube and the tube protective Since it is not necessary to align the center axis of the sleeve, it is possible to easily connect the pipe to the underground structure. In this case, the watertightness can be secured simply by hardening the confinement of the tube protection sleeve and the tube around with a mortar or the like.

Description

Connection structure and connection method of pipe protection sleeve and underground structure using the same

The present invention relates to a protective sleeve of a pipe connected to an underground structure, such as a manhole, and a connection structure and a connection method of a pipe to an underground structure using the same.

Conventionally, where an underground structure, for example, a manhole is provided, a phenomenon in which the ground in the vicinity of the manhole is relatively settled may occur. When such ground subsidence occurs, the pipe (flexible wire pipe, etc.) connected to the manhole in the ground is subjected to strong earth pressure, and the cross section is greatly deformed or destroyed. In order to prevent this, the countermeasure like FIG. 8 or 9 is conventionally employ | adopted.

The countermeasure shown in FIG. 8 covers a buffer pipe 3 having a required length near the end of the flexible conduit 1, and the end of the conduit 1 and the buffer pipe 3 is the wall of the manhole 5. The end of the conduit 1 and the buffer pipe 3 is fixed to the wall 5 of the manhole by placing the mortar 9 in the hole 7 of the hole 7 and filling the mortar 9 in the hole 7 around it. The buffer pipe 3 has an inner diameter larger than the outer diameter of the conduit 1 so as not to restrain the conduit 1. In addition, in the drawing, reference numeral 11 denotes soil that is filled on the outer side of the wall 5 of the manhole. With the structure as shown in Fig. 9, when the ground subsidence occurs near the hole, the conduit 1 is allowed to sag in the buffer pipe 3, thereby preventing extreme cross-sectional deformation or breakage of the conduit 1. Can be.

The countermeasure shown in FIG. 9 covers the protective pipe 13 made of flexible and flexible stainless steel near the end of the flexible wire tube 1, and the end of the protective pipe 13 is covered by the wall of the manhole 5. The end of the protective pipe 13 is fixed to the wall 5 of the manhole by inserting the mortar 9 into the hole 7 and filling the mortar 9 into the hole 7 around the hole 7. In this case, the end of the conduit 1 is not fixed to the wall 5 and slides in the tube axis direction in the protective pipe 13. Therefore, when ground subsidence occurs near the manhole, the end of the conduit 1 is drawn into the protective pipe 13, so there is no fear of excessive tension on the conduit 1, so that the conduit 1 You can protect more reliably.

In addition, in the method using the buffer pipe as shown in FIG. 8, it is also proposed to form a waveform in the buffer pipe, change the pitch or crest of the waveform in the longitudinal direction, and vary the bending stiffness of the buffer pipe in the longitudinal direction. (Japanese Unexamined Patent Publication No. 5-332479).

In the structure in which the ends of the tube and the buffer pipe are fixed to the wall of the ground structure by mortar or the like as shown in FIG. 8, the tubes are only loosely inserted into the buffer pipe, so that the ends of the tube and the buffer pipe are fixed to the wall of the ground structure. When fixed by mortar or the like, the tube and the buffer pipe are relatively movable in the tube axis direction, and it is difficult to align the center axis of the tube and the buffer pipe. For this reason, there is a problem that connecting the pipe to the wall of the ground structure is very troublesome and takes time.

In addition, in the structure in which the tube is slidable in the protective pipe as shown in FIG. 9, there is a problem that water easily penetrates the ground structure through the gap between the tube and the protective pipe.

In addition, when fixing the pipe and the buffer pipe (or protective pipe) to the wall of the ground structure by mortar or epoxy putty, it is necessary to fix the pipe and the buffer pipe with a support or the like until the mortar or epoxy putty is completely solidified. There is also a difficulty in that it takes time to refill the soil around the underground structure.

The first object of the present invention is to provide a pipe protection sleeve which can easily connect a pipe to an underground structure, and is easy to perform a water penetration prevention process from the connection portion into the underground structure, and a pipe to the underground structure using the same. It is to provide a connection structure and a connection method.

The second object of the present invention is to refill the soil around the ground structure before the mortar or epoxy putty is completely solidified when the pipe and the tube protection sleeve are fixed to the wall of the ground structure by mortar or epoxy putty. To make it possible.

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

2 is a cross-sectional view showing a second embodiment of the present invention.

3 is a cross-sectional view showing a third embodiment of the present invention.

4 is a cross-sectional view showing a fourth embodiment of the present invention.

5 is a sectional view showing a fifth embodiment of the present invention.

6 is a cross-sectional view showing a sixth embodiment of the present invention.

Fig. 7 is a sectional view of a covering opening portion of the tube protection sleeve used in the sixth embodiment.

8 is a cross-sectional view showing an example of a connection structure of a pipe to a conventional underground structure

9 is a cross-sectional view showing another example of a connection structure of a pipe to a conventional underground structure

(Explanation of symbols for the main parts of the drawing)

1: conduit (pipe) 5: manhole wall

7: hole 9: mortar

15: protective sleeve sleeve 17: crown opening

19: official government 21: corrugated valley

23: spiral protrusion 25: collar

27: flange 29: Bellemouth

29a: flange

In order to achieve the first object, the tube protection sleeve of the present invention is arranged in the construction of the wall of the ground structure, so that the tube is inserted, and has a covering opening portion having an inner diameter larger than the outer diameter of the tube. One end portion of the covering opening portion is provided with a pipe fixing section for preventing movement in the tube axis direction and the radial direction with respect to the outer circumference of the pipe.

For this reason, when fixing a pipe | tube and a tube protection sleeve to the wall of an underground structure by mortar etc., a pipe and a tube protection sleeve do not move relatively to a pipe axis direction, and it is necessary to align the center axis of a pipe and a tube protection sleeve. Since it is not possible to connect the pipe to the underground structure, the work can be easily performed. In this case, the watertightness can be secured simply by hardening the surroundings of the tube protection sleeve and the tube around with a mortar or the like.

In the case where the tube is a spiral wave tube generally used as a flexible wire tube, it is preferable to form a spiral protrusion on the inner circumferential surface of the pipe fixing section for screwing with the spiral groove on the outer circumferential surface of the tube.

In this way, the end of the tube is inserted into the tube protection sleeve, and the tube fixing sleeve of the tube protection sleeve can be fixed at a predetermined position by simply rotating the tube protection sleeve around the tube.

When the covering opening portion of the tube protective sleeve is in the form of a corrugated pipe, the followability to ground subsidence is improved, and the crush resistance is improved. However, in the form of a corrugated corrugated tube inserted therein, the waveform of the outer circumferential surface of the tube may be caught by the corrugated waveform of the inner circumferential surface of the capping tube portion, which may hinder the slide of the tube in the capping tube portion. Therefore, in the case where the pipe is a corrugated pipe, when the covering opening portion of the tube protection sleeve of the present invention is in the form of a corrugated pipe, the waveform of the covering opening portion is formed so that the waveform of the covering opening portion and the waveform of the pipe are not caught from each other. It is desirable to differ from the waveform (different in the direction of the waveform or the pitch of the waveform, etc.).

In addition to the first object, in order to achieve the second object, the tube protection sleeve of the present invention has a collar sized to block a hole in the wall of the underground structure into which the tube is inserted. It is characterized by one. Here, "the size which blocks a hole" means that the collar has a size that cannot pass through the hole. That is, not only the case where the collar has a size that completely occludes the hole, but the case where the hole is rectangular includes the case where the collar touches the edge portion along the longitudinal direction of the hole. Furthermore, in addition to mounting such a collar, a bell mouth having a flange or flange having a size or a flange for preventing the hole from inside the pipe or tube protection sleeve protruding inside the hole of the wall of the ground structure. It is preferable to mount the.

In this way, when using a protective sleeve with a collar or flange (bell mouse), the filler (such as mortar or epoxy putty) filled in the hole of the wall by collar and flange or collar and bell mouse is not applied. It is possible to backfill the soil around the subsurface structure before the filler is completely solidified, thereby reducing the work time.

The filling in the hole may be after or before the flange (bell mouse) is attached to the inside of the wall.

EMBODIMENT OF THE INVENTION Hereinafter, the specific Example of this invention is described with reference to an accompanying drawing.

(Example 1)

1 shows a first embodiment of the present invention. The tubular protective sleeve 15 used in this embodiment is formed by integrally forming a short tubular tubing fixing portion 19 on one end of the covering opening portion 17. The conduit tube 1 is inserted into the tube protection sleeve 15. The inner diameter of the covering opening portion 17 is larger than the outer diameter of the conduit 1 so as not to restrain the conduit 1. The covering opening portion 17 and the conduit 1 are in the form of a straight tube without a corrugation. On the other hand, the inner diameter of the pipe | tube fixing part 19 is formed in the grade which is smaller than the covering opening part 17, and is slightly larger than the outer diameter of the conduit pipe 1.

It is preferable to fix the conduit part 19 to the conduit tube 1 with an adhesive agent, and the conduit part 19 is prevented from moving in the tube axis direction and the radial direction with respect to the outer periphery of the conduit tube 1. The position to fix the conduit 19 to the conduit 1 is when the conduit 1 is inserted into the hole 7 of the wall 5 of the manhole. Located outside of 5), it is set so that the advertising section (page 19) is located in the hole (7). It is preferable that the distal end of the tube fixing part 19 is located between the inner end and the outer end of the hole 7.

The mortar 9 is filled in the periphery of the tube fixing part 19 and the conduit tube 1 in the hole 7, and the mortar 9 solidifies the conduit tube 1 and the tube protection sleeve 15 to the wall 5. ), And watertightness is maintained. When filling the mortar 9, the tube protection sleeve 15 does not move in the longitudinal direction with respect to the conduit 1, and it is necessary to center the tube protection sleeve 15 with the conduit 1. Since it is absent, the filling operation can be performed very simply.

By forming the tubular protective sleeve 15 as described above, when ground subsidence occurs outside the wall 5 of the manhole, concentration of stress in the part of the conduit 1 can be avoided, and the conduit 1 Can be damaged.

(Example 2)

2 shows a second embodiment of the present invention. The tube protective sleeve 15 used in this embodiment is also formed by integrally forming a short tubular tube fixing part 19 on one end of the cover opening 17. The conduit 1 inserted into the tube protection sleeve 15 is in the form of a spiral wave tube. The inner diameter of the covering opening 17 is larger than the outer diameter (maximum outer diameter) of the conduit 1 so as not to restrain the conduit 1. The covering opening portion 17 is in the form of a straight tube without waveform.

Further, on the inner circumferential surface of the gonggo government 19, a spiral projection stem 23 for screwing with the spiral groove 21 on the outer circumferential surface of the conduit tube 1 is formed. In other words, the tube fixing portion 19 is screwed into the spiral groove 21 of the outer circumferential surface of the conduit 1 so as to move in the axial direction and the radial direction with respect to the conduit 1 by screwing the spiral protrusion stem 23 of the inner circumferential face thereof. It is fixed to be impossible. The position to fix the conduit 19 to the conduit 1 is when the conduit 1 is inserted into the hole 7 of the wall 5 of the manhole. It is located outside of 5), and it is set so that the advertising part 19 may be located in the hole 7. It is preferable that the distal end of the tube fixing portion 19 is located in the middle of the inner end and the outer end of the hole 7. The position at which the fixing part 19 is fixed to the conduit tube 1 can be easily adjusted by rotating the tube protection sleeve 17.

The mortar 9 is filled around the tube fixing part 19 and the tube 1 in the hole 7, and the mortar 9 solidifies the conduit tube 1 and the tube protective sleeve 15 to the wall 5. ), And watertightness is maintained. When filling the mortar 9, the tube protective sleeve 15 does not move in the longitudinal direction of the conduit 1, and there is no need to center the tube protective sleeve 15 and the conduit 1. Therefore, the filling operation can be performed very simply.

By forming the tubular protective sleeve 15 as described above, when ground subsidence occurs outside the wall 5 of the manhole, concentration of stress in the part of the conduit 1 can be avoided, and the conduit 1 Can be damaged.

(Example 3)

3 shows a third embodiment of the present invention. The tube protection sleeve 15 used in this embodiment is also formed integrally with a short tubular tube fixing part 19 at one end of the cover opening portion 17. However, the conduit tube 1 inserted into the tube protection sleeve 15 is in the form of a spiral wave tube, and the cover opening portion 17 of the tube protection sleeve 15 is in the form of an annular wave tube. The inner diameter (minimum inner diameter) of the covering opening portion 17 is larger than the outer diameter (maximum outer diameter) of the conduit 1 so as not to restrain the conduit 1.

The covering opening 17 is formed in the form of a corrugated pipe in order to improve the flexibility and pressure resistance of the covering opening 17 and to more secure the conduit 1 by ground subsidence. Although the thickness of the covering opening 17 may be substantially constant over the entire length, in this embodiment, the thickness of the covering opening 17 is gradually thinned as the tip is turned toward the tip (waveform pitch and wave height are constant). ), This increases the bending stiffness of the covering opening portion 17 near the wall 5 and decreases the bending rigidity of the covering opening portion 17 as it is separated from the wall 5. This is to minimize the bending deformation of 1). In order to reduce the bending stiffness of the covering opening portion 17 toward the distal end portion, for example, the thickness and the pitch of the corrugation may be kept constant, and the wave height of the corrugation may be increased toward the distal end portion.

In addition, since the waveform of the conduit opening part 17 was made into the annular waveform (independent waveform), since the waveform of the conduit 1 is a spiral waveform, the mountain part of the waveform of the outer peripheral surface is a covering opening part 17 This is to avoid falling into the corners of the waveform of the inner circumferential surface. Thereby, the conduit 1 can slide smoothly in the covering opening 17. Similar effects can be obtained even when the waveform of the covering opening portion 17 is the spiral waveform of the conduit 1 and the spiral waveform of the opposite spiral direction.

Further, on the inner circumferential surface of the gonggo government 19, a spiral projection stem 23 for screwing with the spiral groove 21 on the outer circumferential surface of the conduit tube 1 is formed. In other words, the tube fixing portion 19 is screwed into the spiral groove 21 of the outer circumferential surface of the conduit 1 so as to move in the axial direction and the radial direction with respect to the conduit 1 by screwing the spiral protrusion stem 23 of the inner circumferential face thereof. It is fixed so that The position to fix the conduit 19 to the conduit 1 is that when the conduit 1 is inserted into the hole of the wall 5 of the manhole, the cladding tube portion 17 side of the wall 5 of the manhole It is located outside, and it is set so that the corridor part 19 may be located in the hole 7. It is preferable that the distal end of the tube fixing part 19 is located in the middle of the inner end and the outer end of the hole 7. The position at which the tube fixing portion 19 is fixed to the conduit tube 1 can be easily adjusted by rotating the tube protective sleeve 17.

The mortar 9 is filled around the tube fixing part 19 and the tube 1 in the hole 7, and the mortar 9 solidifies the conduit tube 1 and the tube protective sleeve 15 to the wall 5. ), And watertightness is maintained. When filling the mortar 9, the tube protective sleeve 15 does not move in the longitudinal direction of the conduit 1, and there is no need to center the tube protective sleeve 15 and the conduit 1. Therefore, the filling operation can be performed very simply.

By forming the tubular protective sleeve 15 as described above, when ground subsidence occurs outside the wall 5 of the manhole, concentration of stress in the part of the conduit 1 can be avoided, and the conduit 1 Can be damaged.

(Example 4)

4 shows a fourth embodiment of the present invention. This embodiment adds an improvement to the third embodiment, and differs from the third embodiment in that the collar 25 is attached to the boundary between the cover opening portion 17 of the protective sleeve sleeve 15 and the fixing portion 19. The flange 27 is attached to the outer periphery of the conduit 1 which protrudes inside the wall 5 of the manhole. The collar 25 and the flange 27 are sized to block the holes 7 of the wall 5. In addition, the position of this collar 25 is between the inner end part of the hole 7 and the outer end part of the fixed part 19 side of the tube sleeve sleeve 15 in the state which contacted the outer surface of the wall 5. It is designed to be located at.

When the tube fixing part 19 side of the tube protection sleeve 15 is inserted into the hole 7, the collar 25 will be in the state which blocks the hole 7 from the outside. In this state, the mortar 9 is filled in the periphery of the conduit 19 and the conduit 1 in the hole 7. Then, when the flange 27 is spun on the outer periphery of the conduit 1 projecting inside the wall 5, the flange 27 is in a state of blocking the hole 7 of the wall 5 from the inside, The collar 25 and the flange 27 hold the wall 5 therebetween so that the conduit 1 and the tube protective sleeve 15 are temporarily supported on the wall 5. After the mortar 9 is solidified, the conduit 1 and the flange 27 are cut off along the inner surface of the wall 5 to be completed.

With this configuration, since external pressure is not applied to the mortar 9 filled in the hole 7, the soil can be filled around the manhole before the mortar 9 is completely solidified. Can shorten. In addition, as described above, when the position of the collar 25 fills the hole 7 by the mortar 9, the tube protection sleeve 15 is located at the center of the hole 7 where water leakage is unlikely to occur. Since it is designed so that the end part of the fixed part 19 side may come, in this example connection method, it can be set easily as a water-tight structure. In addition, it is preferable that the flange 27 is mounted on the outer circumference of the conduit (spiral wave tube) 1 by screwing. Moreover, after attaching the flange 27 to the inside of the wall 5, the mortar 9 may be put in the hole 7 from a clearance gap.

Since the structure and effect other than the above are the same as that of Example 3, the same code | symbol is attached | subjected to the same part and description is abbreviate | omitted.

In addition, as in this embodiment, the use of a collar-protected sleeve and a flange with a collar is also applicable to the first or second embodiment.

(Example 5)

5 shows a fifth embodiment of the present invention. This embodiment is also an improvement to the third embodiment, which differs from the third embodiment in that the collar 25 is attached to the boundary between the cover opening portion 17 of the protective sleeve sleeve 15 and the fixing portion 19. The bell mouse 29 is attached to the end of the conduit 1 without protruding the conduit 1 from the inside of the wall 5. The collar 25 has a size to block the hole 7 of the wall 5, and the bell mouse 29 has a flange portion 29a of a size to block the hole 7 of the wall 5.

When the conduit 19 is inserted into the hole 7, the collar 25 is in a state of blocking the hole 7 from the outside. In this state, the mortar 9 is filled in the periphery fixing part 19 and the conduit 1 in the hole 7. And when the bell mouse 29 is attached to the end of the conduit 1, the flange part 29a will block the hole 7 of the wall 5 from the inside, and these collars 25 and a plan The branch portion 29a holds the wall 5 therebetween, so that the conduit tube 1 and the tube protection sleeve 15 are temporarily fixed to the wall 5.

With this configuration, since external pressure is not applied to the mortar 9 filled in the hole 7, the soil can be filled around the manhole before the mortar 9 is completely solidified. Can shorten. In addition, since the bell mouse 29 used for this connection structure can remain as it is and can be used, the process of the inner surface of the wall 5 after construction becomes simple compared with Example 4 mentioned above. In addition, the bell mouse 29 is preferably configured to be mounted by twisting inside the end of the conduit (spiral wave tube) 1.

Since the structure and effect other than the above are the same as that of Example 3, the same code | symbol is attached | subjected to the same part and description is abbreviate | omitted.

In addition, as in this embodiment, the use of the collared tube protective sleeve and the flanged bell mouse is also applicable to the first or second embodiment.

(Example 6)

6 and 7 show a sixth embodiment of the present invention. This embodiment is almost the same as that of the fourth embodiment, except that the fourth embodiment has a predetermined interval in the circumferential direction (90 ° interval is preferable) at the valleys of the corrugations of the covering opening portion 17. The hollow rib 31 is formed. The ribs 31 are formed to increase the bending stiffness of the covering opening 17.

Since the structure and effect other than the above are the same as that of Example 4, the same code | symbol is attached | subjected to the same part, and description is abbreviate | omitted.

Thus, forming a rib in the valley of the lower mold | type of a covering part is applicable also to Example 3 or Example 5 mentioned above.

As described above, according to the present invention, it is possible to fix the tube fixing part of the tube protective sleeve so that it cannot be moved in the tube axis direction and the radial direction at a predetermined position of the tube, so that the tube and the tube protective sleeve are mortared on the wall of the ground structure. When fixed by a filler such as, the tube and tube protective sleeve do not move relatively in the tube axis direction, and there is no need to align the central axis of the tube and tube protective sleeve. Connection can be performed easily.

In addition, by fixing the tube fixing portion of the tube protective sleeve to the tube, it is possible to perform a process of simply ensuring watertightness.

In addition, the use of a collared tube protective sleeve makes it possible to fill the soil around the underground structure before the filling of mortar or the like filled in the hole in the wall of the underground structure completely solidifies, thereby shortening the construction period. .

Claims (8)

A protective pipe sleeve 15 disposed in the hole 7 of the wall 5 of the subsurface structure, through which the pipe 1 is inserted, and having an inner diameter larger than the outer diameter of the pipe 1 is provided. And a tubing fixing sleeve (19) formed at one end of the covering opening portion (17) so as not to move in the tube axis direction and the radial direction with respect to the outer circumference of the tube (1). The spiral periphery of claim 1, wherein a spiral groove is formed on an outer circumferential surface of the pipe (1), and a spiral protrusion (23) is screwed into a spiral groove of the pipe (1) on an inner circumferential surface of the pipe fixing part (19). Tube protective sleeve, characterized in that formed. The collar according to claim 1 or 2, wherein the collar 7 is sized so as to close the hole 7 of the wall 5 of the subsurface structure in which the tube 19 is inserted from the outside, on the side of the tube 19 of the tube protection sleeve. Tube protection sleeve characterized in that the mounting (25). 4. The flange (1) according to claim 3, characterized in that the pipe (1) or the tube protection sleeve (15) protruding inside the wall (5) is provided with a flange (27) having a size that closes the hole (7) from the inside. Tube protective sleeve. A bell mouse (29) according to claim 3, wherein the pipe (1) or the tube protection sleeve (15) protruding inside the wall (5) has a flange portion (29a) that closes the hole (7) from the inside. Tube protective sleeve, characterized in that the mounting. The tube 1 is inserted through the tube protective sleeve 15 according to claim 1 in which the tube fixing portion 19 is fixed to the tube 1, and the cover opening portion 17 is formed on the wall 5 of the underground structure. In the state where the freezing section 19 is arranged so as to be inside the hole 7 of the wall 5, the packing 9 surrounds the freezing section 19 and the pipe 1 in the hole 7. Connection structure of pipe to underground structure characterized by hardening by. The protective guard pipe sleeve 15 according to claim 1 in which the pipe fixing portion 19 is fixed to the pipe 1, and the cover opening portion 17 is outside the wall 5 of the subterranean structure and the pipe fixing portion 19 side. Arranging to lie inside the hole 7 of the wall 5; While the collar 25 is mounted to block the hole 7 from the outside, the hole 7 is inserted into the tube 1 or tube protection sleeve 15 protruding inside the wall 5. A method of connecting a pipe to an underfloor structure, comprising the step of attaching a bell mouse (29) having a flange (27) or a flange portion (29a) which is blocked from being blocked. 8. Mounting a bell mouse (29) having the flange (27) or a flange portion (29a) on a tube (1) or a tube protection sleeve (15) protruding inside the wall (5). A method of connecting a pipe to an underfloor structure, which comprises a step of filling a filler (9) around said pipe (19) and said pipe (1) in said hole (7).