JP3415454B2 - Cylindrical body for underground structure and ring for connecting cylindrical body for underground structure - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tubular body for an underground structure which constitutes an underground structure such as a manhole, and a joint portion between tubular bodies which constitute the tubular body for an underground structure. The present invention relates to a connecting ring to be installed.

[0002]

2. Description of the Related Art Underground structures such as manholes are often constructed by stacking a plurality of tubular bodies vertically in the ground to form a tubular body. An adhesive such as a synthetic resin adhesive is applied to the upper end surface of the tubular body positioned, and the tubular bodies positioned on the upper side are stacked and connected thereon.

At that time, as a structure for preventing the upper and lower cylindrical bodies from being displaced and improving the sealing property, for example, as described in Japanese Utility Model Registration No. 2569629,
Apply a connecting ring formed by forming a flange portion outwardly on the outer peripheral surface of the frame portion formed into a ring-shaped band-shaped member on the inner peripheral surface in the vicinity of the joint portion between the upper and lower cylindrical bodies alone,
A configuration is known in which the collar portion is embedded in an adhesive agent applied to the joint portion.

In the tubular body for underground structure having the above-mentioned structure,
Since the tubular bodies are integrated by the ring-shaped frame portion, the connection strength is increased, and the adhesive applied to the joint portion can be prevented from leaking into the tubular body.

[0005]

However, since the outer peripheral surface of the frame portion is a smooth surface, the inner peripheral surface of the cylindrical body formed of concrete or the like has some irregularities and an error in the inner diameter dimension. If so, a gap is generated between the outer peripheral surface of the frame portion and the inner peripheral surface of the tubular body. Therefore, it is not always possible to firmly integrate the tubular body by the connecting ring, and the tubular body will be laterally displaced if a strong earth pressure or the like is applied to the tubular body from the side due to the passage of a heavy vehicle or the like. , Furthermore, the connecting ring may come off.

The present invention has been made in view of the above-mentioned problems, and it is possible to more firmly integrate the tubular bodies alone with each other, and to ensure the lateral displacement of the tubular body even when a strong pressure is applied from the side. An object is to provide a tubular body for an underground structure and a ring for connecting the tubular body for an underground structure that can be prevented.

[0007]

In order to achieve the above object, a tubular body for an underground structure of the present invention is a tubular body that is vertically stacked with an adhesive, and an upper and lower tubular body alone. A connecting ring that is laid across the joints between them, the connecting ring is configured by providing a flexible projection on the annular ring body, and the connecting ring is a single tubular body. The projecting portion is in contact with the wall surface of the tubular body alone in a state of being laid across the joint portion of.

Further, the connecting ring of the tubular body for underground structure of the present invention is for connecting over the joint portion of the tubular bodies which are stacked vertically and constitute the tubular body for underground structure. A ring, wherein the connecting ring comprises an annular ring main body and a flexible projection provided on the annular ring main body and having a tip abutting against a wall surface of the tubular body alone. There is.

In the structure of the underground structure tubular body and its connecting ring, when the connecting ring is laid across the joint between the upper and lower tubular bodies alone, the protrusion of the connecting ring is provided. Comes into contact with the wall surface of the tubular body alone. Since the protrusion has flexibility, even if the wall surface of the tubular body has unevenness or dimensional error in the radial direction, it can be absorbed by the deformation of the protrusion, and the wall surface and the protrusion are strong. In close contact. Then, the adhesive applied to the joint leaks out and is fixed to the protrusion that is in contact with the wall surface, and the protrusion acts as an anchor by being fixed in the adhesive layer formed by the adhesion. . Therefore, the tubular bodies are firmly integrated with each other through the connecting ring including the protrusion.

Further, the tubular body for underground structure of the present invention includes a tubular body which is vertically stacked with an adhesive and a connecting ring which is laid across a joint portion between the upper and lower tubular bodies. The connecting ring is configured by providing flexible projecting portions along the circumferential direction on the upper and lower end surfaces of the annular ring body, and the connecting ring is formed by joining the tubular bodies together. Characterized in that the protrusion is in contact with the upper and lower parts of the tubular body recess in a state of being mounted in a tubular body recess provided along the portion and straddling a joining portion facing the tubular body recess. There is.

Further, the connecting ring for a tubular body for an underground structure of the present invention is a connecting ring which is laid across a joint portion of tubular bodies which are stacked vertically and constitute a tubular body for an underground structure. A ring, wherein the connecting ring has an annular ring body, and flexible projections formed on the upper and lower end surfaces of the annular ring body along the circumferential direction. , The tubular body is mounted in the tubular body concave portion provided along the joint portion of the tubular body alone, and in the state of being laid across the joint portion facing the tubular body concave portion, the projecting portions are provided above and below the tubular body concave portion. It is characterized in that it is configured to abut.

In the construction of the underground structure tubular body and its connecting ring, the connecting ring is mounted in the tubular body concave portion provided along the joint between the upper and lower tubular bodies alone, and the tubular body is mounted. When it is laid over the joint portion facing the concave portion of the tubular body, in this state, the protruding portion of the connecting ring contacts the upper and lower portions of the concave portion of the tubular body. Since the projecting portion has flexibility, even if the upper and lower portions of the hollow portion of the tubular body have irregularities or dimensional errors in the vertical direction, it is possible to absorb them by deformation of the projecting portion. Then, the adhesive applied to the joint portion leaks and adheres to the protruding portions that are in contact with the upper and lower portions of the cylindrical body concave portion,
The protrusion surely prevents the adhesive from leaking from the concave portion of the cylindrical body to the inside or the outside of the cylindrical body.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION In the tubular body for an underground structure and the connecting ring thereof according to the present invention, the protrusion is formed on the ridge and is provided over the entire length in the circumferential direction of the annular ring body. The ridge more strongly exerts an action as an anchor, the tubular bodies are more strongly integrated with each other through the connecting ring, and the adhesive leaked from the joint portion is surely received.

Further, in the tubular body for an underground structure and the connecting ring thereof according to the present invention, the protrusion is formed on the ridge, and a plurality of protrusions are provided along the circumferential direction of the annular ring body along the entire length to form the tubular body alone. Since the joints are positioned above and below each other, the protrusions above and below the joints, the wall surface of the tubular body, and the peripheral surface of the annular ring body form an annular closed space.
The adhesive applied to the joint portion leaks out into the space portion and is filled and fixed, so that the tubular bodies are integrated with each other via the connecting ring more firmly. Also, the adhesive is trapped in this space and does not leak out, so
Leakage of the adhesive to the inside or outside of the tubular body is reliably prevented.

Further, in the tubular body for underground structure and the connecting ring thereof according to the present invention, a plurality of protrusions are formed on the protrusions and are provided at intervals in the circumferential direction along the vertical direction of the annular ring body. Therefore, it becomes easy to attach the connecting ring to the joint portion between the cylindrical bodies, which is performed from above.

Further, in the tubular body for an underground structure and the connecting ring thereof according to the present invention, a plurality of ridges provided at intervals in the circumferential direction along the vertical direction of the annular ring body are directed toward the upper and lower ends. According to this, since the height is provided so as to be low, it becomes easier to attach the connecting ring to the joint portion between the cylindrical bodies, which is performed from above. In the tubular body for an underground structure and the connecting ring thereof of the present invention, the ridges of the connecting ring are formed in a pleated shape, and therefore the pleated ridges are in contact with the wall surface of the tubular body alone to form a hook shape. The adhesive applied to the joint leaks out and adheres to the ridge that has been deformed into a hook-like shape, and the ridge acts as an anchor in the adhesive layer formed by the ridge. Exert more strongly.

In the tubular body for underground structure and the connecting ring thereof according to the present invention, since the storage portions capable of storing the projecting portions are provided on the upper and lower end surfaces of the annular ring body, the connecting ring is used as the hollow portion of the tubular body. Even if the deformation of the protrusion becomes large due to the fitting, the deformation can be sufficiently absorbed, and it is possible to flexibly deal with the dimensional error in the vertical direction of the concave portion of the tubular body. be able to.

Further, in the tubular body for an underground structure of the present invention, since the upper and lower tubular bodies are joined to each other in a substantially horizontal plane, a lateral displacement force is applied to the tubular body due to passage of a heavy vehicle or the like. Even if the tubular body is not subjected to excessive force, damage to the tubular body is prevented, and the annular ring body of the connecting ring is made of a flexible material. The flexibility absorbs the force of lateral displacement and suppresses lateral displacement.

Further, in the tubular body for underground structure and the connecting ring thereof according to the present invention, the annular ring body is made of a flexible material and has a U-shaped vertical cross section. Has elasticity, and the elastic force causes the connecting ring to be pressed against the joint portion of the tubular bodies and securely attached thereto, so that the tubular bodies can be more firmly integrated. .

[0020]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a vertical sectional view showing the overall structure of an underground structure. In the figure, the underground structure 1 is a manhole in the form of a vertical hole leading to the sewer pipe, the base concrete is placed at the bottom of the hole excavated at the installation site, and the bottom plate 5 is placed on the base concrete. A tubular body for underground structure (hereinafter, simply referred to as “cylindrical body”) 3 is placed on the bottom plate 5, and a receiving frame 2b and a lid are further mounted on the tubular body 3 via a height adjusting member 20. The lid 2 for the underground structure including the main body 2a is placed and configured.

The above-mentioned tubular body 3 is constructed by sequentially stacking tubular bodies 31, 32, 33, 34 from the lower side, and the respective joint portions 3a, 3b of these tubular bodies are stacked. , 3c, the inner peripheral wall surface of each tubular body is cut out along the circumferential direction to form tubular body recesses (hereinafter, simply referred to as "recesses") 3i, 3j, 3k. . In addition, a through hole 31a is formed in the lowermost tubular body 31,
The sewer pipe 6 is connected.

The above-mentioned joints 3a, 3b, 3c are
These are joints when the upper and lower end surfaces of each tubular body are butted against each other, and all of the joints 3a, 3b, 3c form a substantially horizontal plane with respect to the tubular body 3 having an upright hole.

Then, in each of the joint portions 3a, 3b, 3c,
The connection rings 4, 4 and 4 are laid across in a state of being mounted in the recesses 3i, 3j and 3k.

Next, the structure of the connecting ring 4 and the connecting structure in the case where the connecting ring 4 is laid over each of the joint portions 3a, 3b, 3c will be described with reference to FIGS. 2 and 3. Since the connection structure is the same in all the joints, the connection structure in the joint 3b will be described below.

FIG. 2 is a view showing a side surface and a vertical cross section of the connecting ring 4, and FIG. 3 is an enlarged view of a portion A of FIG. The connecting ring 4 is made of a flexible material, for example, a synthetic resin such as polypropylene. As shown in FIG. 2, the connecting ring 4 is flexible along the entire circumference of the outer peripheral surface 40 a of the annular ring body 40. 41, 4 as ridges (projections) having
2, 43, 44 are provided. Then, in the state in which the connecting ring 4 is laid across the joint portion 3b, as shown in FIG. 3, among the above-mentioned pleated projections 41, 42, 43, 44, the upper fold-shaped projections 41, 42 are joined together. Positioned above the portion 3b, the lower pleats 43, 44 are
It is located below b.

Further, the size of the connecting ring 4 is such that the outer diameter of each pleated protrusion 41, 42, 43, 44 is the cylindrical body unit 3
Since the inner diameters of the wall surfaces 32a, 33a (circumferential surface of the recess 3j) of the second and third 33 are larger than the inner diameter of the connecting ring 4 over the joint portion 3b, the pleated protrusions 41, 42, 43, and 44 contact the wall surfaces 32a and 33a (the peripheral surface of the concave portion 3j) of the tubular bodies 32 and 33 to bend,
Deforms like a hook.

In this embodiment, the pleated protrusions 41, 4
Although 2, 43 and 44 are formed independently along the circumferential direction of the annular ring body 40, the pleated protrusions may be formed continuously along the circumferential direction of the annular ring body 40 in a spiral shape. good. Although the connecting ring 4 is made of synthetic resin such as polypropylene, the connecting ring 4 is not limited to this as long as it has flexibility, and for example, hard rubber or metal may be used.

The operation of bridging the connecting ring 4 to the joint portion 3b is performed in the following procedure. First, an adhesive is applied to the upper end surface of the tubular body 32 that has been set. Next, from the upper side, the lower half of the connecting ring 4 is attached to the concave portion 3 on the tubular body unit 32 side.
Attach to j. At this time, the pleated protrusions 43 and 44 come into contact with the wall surface 32a (the peripheral surface of the recess 3j) of the tubular body 32 to bend and deform into a hook shape. Subsequently, the tubular body single body 33 is placed on the tubular body single body 32. As a result, the upper end surface of the tubular body single body 32 and the lower end surface of the tubular body single body 33 are joined by the adhesive, and the joint portion 3b including the adhesive layer is formed. Further, the upper half of the connecting ring 4 is mounted in the recess 3j on the tubular body unit 33 side, and the pleated projections 41, 42 contact the wall surface 33a of the tubular body unit 33 (the peripheral surface of the recess unit 3j). It is bent and deformed into a hook shape. Since the fold-shaped protrusions 42 and the fold-shaped protrusions 43 are located above and below the joint 3b, the fold-shaped protrusions 42, 43 and the wall surface 32a,
An annular closed space 7 is formed by 33a and the outer peripheral surface 40a of the annular ring body 40.

In the connection structure having the above-mentioned structure, when the tubular bodies 33 are stacked on the tubular body 32, the tubular bodies 32 are stacked.
The adhesive applied to the upper end surface of the
The adhesive that has leaked to the inner peripheral wall surface side flows into the space portion 7. Since this space 7 is a closed space, the leaked adhesive does not go out of the space 7 but fills the space 7 and is fixed as it is.

Therefore, the tubular body single body 32 and the tubular body single body 33 are integrated by the connecting ring 4 via an adhesive, and the pleated projections 42, 43 of the connecting ring 4 deformed in a hook shape are formed. Since it acts as an anchor in the fixed adhesive layer, the integration by the connecting ring 4 is strengthened.
Even if the wall surfaces 32a, 33a of the tubular bodies 32, 33 have irregularities or dimensional errors, the pleated projections 41, 42,
This can be absorbed by the deformation of 43 and 44. Moreover, since the adhesive is confined in the space 7 and does not leak outside, it is possible to reliably prevent the adhesive from leaking to the inner peripheral wall side of the tubular body 3.

Further, in the connection structure having the above-described structure, since the joint portion 3b of the upper and lower tubular bodies 32 and 33 is formed into a substantially horizontal plane, even if a force in the lateral displacement direction is applied to the tubular body 3, the tubular body alone. Unnecessary force is not applied to 32 and 33, and the tubular bodies 32 and 33 can be prevented from being damaged. Moreover, since the annular ring body 40 of the connecting ring 4 is made of a flexible material, the connecting ring 4 can absorb the force of lateral displacement due to its flexibility, and can suppress lateral displacement.

Further, since the concave portion 3j is formed in the vicinity of the joint portion 3b and the connecting ring 4 is mounted in the concave portion 3j, the inner peripheral wall surface of the cylindrical body 3 may be protruded. Therefore, the effective opening area of the tubular body 3 can be increased.

Next, various aspects of the cylindrical body of the present invention and its connecting ring will be described in order with reference to FIGS.

FIG. 4 is a diagram showing a second embodiment of the present invention. In the above-described first embodiment, the concave portion 3j is formed in the vicinity of the joint portion 3b, and the connecting ring 4 is mounted in the concave portion 3j. However, in the second embodiment,
The connecting ring 1 is directly attached to the inner peripheral wall surface near the joint 103b.
It is designed to span 04.

That is, the connecting ring 104 in the second embodiment is similar to the connecting ring 4 in the first embodiment, and the annular ring main body 140 and the pleated protrusions 141 serving as ridges (protrusions). 142, 143, 144, and also includes bent portions 140r, 140s in which the upper and lower ends of the annular ring body 140 are bent at right angles toward the outside, and the connecting ring 104 is laid across the joint portion 103b. When installed, the end surfaces of the respective bent portions 140r and 140s come into contact with the inner peripheral wall surfaces 132a and 133a of the tubular bodies 132 and 133. Further, a projection-like receiving portion 132b is formed on the inner peripheral wall surface 132a of the lower tubular body 132 over the entire length in the circumferential direction, and the connecting ring 1 is mounted from above.
04 is received by the receiving portion 132b.

As described above, in the second embodiment, the connecting ring 104 is connected to the inner wall surface 132 of the tubular bodies 132 and 133.
Since it can be directly attached to the a and 133a, it is not necessary to form the concave portions in the tubular bodies 132 and 133.

Also in the second embodiment, the pleated protrusions 141, 142, 143, 144 of the connecting ring 104 are also used.
Is the inner peripheral wall surfaces 132a, 13 of the tubular bodies 132, 133
It comes into contact with 3a and deforms like a hook, and has the same effect as in the case of the first embodiment.

FIG. 5 is a diagram showing a third embodiment of the present invention. The connecting ring 704 in this embodiment is provided with a strip-shaped rib 742 at the central portion of the annular ring body 740 in the vertical direction (vertical direction) over the entire circumference. Also,
A plurality of flexible ridges (projections) 741 extend in the vertical direction from the ribs 742 along the vertical direction of the annular ring body 740, and are arranged at substantially equal intervals in the circumferential direction. It is provided. The ridges 741 ... Are provided so that the height thereof becomes lower toward the upper and lower ends. Further, flexible projecting portions 740c and 740d are formed on the upper and lower end surfaces of the annular ring main body 740 along the circumferential direction over the entire length thereof.
The protrusions 740 are provided at the roots of the 40c and 740d.
When c and 740d are bent, concave storage portions 740e and 740f capable of storing the bent portions are formed.

When the connecting ring 704 having the above-described structure is mounted in the recess 703j of the tubular body 703 and is laid across the joint 703b facing the recess 703j, the protrusions 741 ...
3j peripheral surface (wall surface 732 of tubular bodies 732, 733)
a, 733a), and the protrusions 740c, 740
d is each upper and lower part (upper and lower wall surfaces) 703 of the recess 703j.
It abuts on m and 703n and is deformed. Therefore, the recess 70
3j peripheral surface and the outer peripheral surface 740a of the annular ring main body 740.
And ridges 741 and 741 and protrusions 740c and 740d
A closed space is formed by and the adhesive that leaks from the joint 703b flows into the closed space and is fixed in the closed space. That is, the adhesive leaked along the circumferential direction is
The adhesive blocked by 41, 741 and fixed, and the adhesive leaked along the vertical direction is blocked and fixed by the protrusions 740c, 740d.

Therefore, the tubular body single body 732 and the tubular body single body 733 which are vertically stacked are integrated by the connecting ring 704 via the adhesive, and the connecting ring 7
04 acts as an anchor in the adhesive layer to which the ridges 741 ... Of 04 are fixed, so that the integration by the connecting ring 704 is strengthened. Further, even if there is unevenness or dimensional error in the radial direction on the peripheral surface of the recess 703j, the protrusion 7 having flexibility.
This can be absorbed by the deformation of 41, and the peripheral surface of the concave portion 703j and the ridges 741 are brought into close contact with each other. further,
Even if the upper and lower portions 703m and 703n of the concave portion 703j have irregularities or dimensional errors in the vertical direction, the convex portions 740c and 740d having flexibility can be absorbed, and the upper and lower portions 703m of the concave portion 703j can be absorbed. , 70
3n and the protrusions 740c and 740d are in close contact with each other. Moreover, the adhesive is securely confined and does not leak to the outside, and it is possible to reliably prevent the adhesive from leaking to the inner peripheral wall side of the tubular body 703.

Further, since accommodating portions 740e and 740f are provided at the upper and lower end surfaces of the annular ring main body 740 and at the root portions of the projecting portions 740c and 740d, respectively.
Even when the protrusions 740c and 740d are largely deformed due to the fitting when the connecting ring 740 is attached to the recess 703j, the deformation can be sufficiently absorbed by the accommodating portions 740e and 740f. It is possible to flexibly deal with a slight dimensional error in the case.

Further, the protrusions 741 ...
Since the connection ring 704 is provided along the vertical direction of the 40, the connection ring 704 is mounted from above so that the protrusions 741 ...
It is possible to smoothly perform the mounting work. The easiness of the mounting work is further enhanced by reducing the height of the ridges 741 as they go toward the upper and lower ends.

The ridges of the present invention as in this embodiment are not limited to pleated ones. Even if the ridges are not pleated, the same effects as described above can be obtained. In order to exert the action more strongly, it is preferable that the ridge is formed in a pleated shape and is deformed into a hook shape when it comes into contact with the wall surface (the peripheral surface of the recess) of the tubular body alone.

FIG. 6 is a diagram showing a fourth embodiment of the present invention. This embodiment is different from the first embodiment described above in that
Six pleated protrusions 241 as protrusions (projections) formed on the connection ring 204 are formed at substantially equal intervals in the vertical direction (vertical direction), not in the circumferential direction, and
Projections 240c are formed on the upper and lower end surfaces of the annular ring body 240.
This is the point where 240d is formed.

The connecting ring 204 having the above-mentioned structure is attached to the tubular body 2.
When it is mounted in the concave portion 203j of No. 03, the adhesive leaked out from the joint portion 203b becomes the wall surface 2 of the tubular bodies 232 and 233.
32a, 233a (the peripheral surface of the recess 203j) and the outer peripheral surface 240a of the annular ring body 240 flow into the space,
Mostly stick in the space. Even if a part of it sewes through the space and reaches the protrusions 240c and 240d, the protrusions 240c and 240d contact the upper and lower parts (upper and lower edges) of the recess 203j to seal the recess 203j. Therefore, the adhesive does not leak to the outside from the protrusions 240c and 240d, and the adhesive does not leak to the inner peripheral wall surface side of the tubular body 203 as in the case of the first embodiment. , Can be surely prevented.

Also in the fourth embodiment, the pleated projections 241 ...
It comes into contact with the wall surfaces 232a, 233a of 233 (the peripheral surface of the recess 203j) to be deformed into a hook shape, and the same effect as in the case of the first embodiment is obtained.

FIG. 7 is a diagram showing a fifth embodiment of the present invention. This embodiment is different from the first embodiment described above in that
The concave portion 303j is formed on the outer peripheral wall surface side of the tubular body 303, while the pleated protrusions 341, 342, 343, 344 as the protrusions (protrusions) of the connecting ring 304 are provided on the inner peripheral surface 340b of the annular ring body 340. Formed on this connecting ring 3
It is the point that 04 is mounted in the recess 303j.

Also in this embodiment, the connecting ring 304 is used.
The corrugated projections 341, 342, 343, 344 of the cylindrical body 332 a, 333 a (the recess 3
It comes into contact with the peripheral surface (03j) and is deformed into a hook shape, and has the same effect as in the case of the first embodiment.

FIG. 8 is a diagram showing a sixth embodiment of the present invention. This embodiment is different from the first embodiment described above in that
By forming concave grooves along the circumferential direction at the center of the lower end surface of the upper tubular body 433 in the thickness direction and in the center of the upper end surface of the lower tubular body 432 in the circumferential direction, respectively, , A ring housing chamber 403j for housing the connecting ring 404 is formed, and meanwhile, the pleated protrusions 441, 442, 443 as the ridges (projections) of the connecting ring 404 are formed.
444 are formed on both the outer peripheral surface 440a and the inner peripheral surface 440b of the annular ring body 440, and the connecting ring 40
4 is attached to the ring storage chamber 403j.

Also in this embodiment, the connecting ring 404 is used.
The pleated projections 441, 442, 443, 444 come into contact with the wall surfaces 432a, 433a (both circumferential surfaces of the ring storage chamber 403j) of the tubular bodies 432, 433 and are deformed into a hook shape. The same effect as the first embodiment is obtained.

Further, in this embodiment, the annular ring body 4
Since both circumferential surfaces 440a and 440b of 40 are fixed with an adhesive, the integration of the upper and lower tubular bodies alone via the connecting ring 404 becomes even stronger.

FIG. 9 shows a seventh embodiment of the present invention, (a)
FIG. 4B is a diagram showing a state in which the connection ring 504 is attached to the tubular body 503, and FIG. 8B is a vertical cross-sectional view of the connection ring 504 before attachment. The difference between this embodiment and the first embodiment described above is that the outer circumference of the annular ring body 540 has a double structure, that is, the inner body 540m and the outer body 540n are connected at one end side and the longitudinal section is U-shaped. And in the outer body 540n, as in the third embodiment.
Six pleated protrusions 541 are formed at predetermined intervals in the vertical direction (vertical direction), and protrusions 540c and 540d are formed in a ring shape on the upper and lower end surfaces of the outer main body 540n. is there.

As shown in FIG. 9B, the outer main body 540n is formed so as to open from the inner main body 540m from one end side to the other end side in a free state before mounting. When the ring main body 540 is attached to the recess 503j, the outer main body 540n is pressed in the direction of the inner main body 540m, and the reaction thereof strongly presses the peripheral surface of the recess 503j via the pleated protrusion 541.

That is, in this embodiment, the ring-shaped ring body 540 itself has elasticity, and the elastic force causes the connecting ring 504 to be pressed against the joint portion 503b of the tubular bodies 532 and 533 so that they are securely attached. Therefore, the cylindrical bodies 532 and 533 can be more strongly integrated with each other.

As in the case of the fourth embodiment, the adhesive leaked from the joint portion 503b is the cylindrical body 53.
It flows into the space between the wall surfaces 532a and 533a of 2,533 (the peripheral surface of the recess 503j) and the outer peripheral surface of the outer main body 540n, and most of them are fixed in the space. Even if some of them sew through the space and reach the protrusions 540c and 540d,
Since the protrusions 540c and 540d contact the upper and lower parts (upper and lower wall surfaces) of the recess 503j to seal the recess 503j, the adhesive does not leak out from the protrusions 540c and 540d. Adhesive is cylindrical body 503
It can be surely prevented from leaking to the inner peripheral wall surface side.

Further, as in the case of the fourth embodiment, the pleated protrusions 541 ...
Wall surfaces 532a, 533a of 32, 533 (recess 503j
It comes into contact with the outer peripheral surface) and is deformed into a hook shape, and has the same effect as in the case of the first embodiment.

FIG. 10 is a diagram showing an eighth embodiment of the present invention. This embodiment is different from the first embodiment described above in that
A projection-shaped receiving portion 610 is formed along the entire length of the inner peripheral surface of the connecting ring 604 between the lower tubular body 633 and the upper tubular body 634 of the tubular body 603 along the circumferential direction. However, the inner lid 620 can be placed on the receiving portion 610.

With the above-mentioned structure, the inner lid 620, which could not be placed in the past, can be placed, and it can be prevented from falling down, the heat generated from the inside of the underground structure can be insulated, or the odor can be prevented. It becomes easy to shut off. The receiving portion 610 for the inner lid 620 can be formed on the connecting ring at an arbitrary position of the tubular body.

In each of the above embodiments, the case where the present invention is applied to a round (cylindrical) tubular body has been described, but it goes without saying that the present invention applies to a square (square tubular) tube. It can also be applied to a shape.

Also, the first, second, fifth, sixth and eighth
In each of the embodiments, the ridges are provided along the circumferential direction of the annular ring body, and in the third, fourth, and seventh embodiments in the longitudinal direction (vertical direction) of the annular ring body, respectively. In the above, the combination of the protrusions provided in the circumferential direction and the one provided in the vertical direction may be reversed.

Further, in each of the embodiments, the projection of the present invention is provided as a projection and is continuously provided in the circumferential direction or in the vertical direction, but the projection is not limited to such a strip-shaped projection. A plurality of protrusions having a hemispherical shape, a triangular pyramid shape, a quadrangular prism shape, or the like may be provided intermittently.

[0063]

Since the tubular body and its connecting ring of the present invention have the above-mentioned structure, the following effects can be obtained.

When the connecting ring is constructed by providing a flexible projection on the annular ring body and the connecting ring is laid across the joint between the tubular bodies, the projection is tubular. Since it is configured to come into contact with the wall surface of the single body, even if the wall surface of the tubular body has unevenness or a dimensional error in the radial direction, it can be absorbed by the deformation of the flexible protrusion. The wall surface and the protrusion can be firmly attached. Further, the adhesive applied to the joint portion leaks and is fixed to the protrusion contacting the wall surface, and the protrusion is fixed in the adhesive layer formed by the fixing and acts as an anchor. . Therefore, the tubular bodies can be firmly integrated with each other through the connecting ring including the protrusion, and the tubular body can be made more rigid.

Further, since the protrusion is formed as a ridge and the ridge is provided over the entire length in the circumferential direction of the annular ring body,
The ridge can more strongly exert an action as an anchor, the single tubular bodies can be more strongly integrated, and the adhesive leaked from the joint portion can be reliably received.

Further, since a plurality of protrusions are provided in the entire length along the circumferential direction of the annular ring main body so as to be located above and below the joint between the individual tubular bodies, the protrusions above and below the joint, The wall surface of the tubular body and the peripheral surface of the annular ring body form a closed space, and the adhesive applied to the joint leaks out and fills and adheres to this space. It is possible to further strengthen the integration of the tubular bodies through the adhesive, and since the adhesive is trapped in this space and does not leak to the outside, be sure to prevent the adhesive from leaking. You can

Since a plurality of ridges are provided at intervals in the circumferential direction along the vertical direction of the annular ring body, the connection ring, which is inserted from above, can be smoothly attached along the ridges. Therefore, the mounting work can be easily performed. The easiness of the mounting work is further enhanced by reducing the height of the ridge as it goes toward the upper and lower ends.

Further, since the ridges are formed in a pleated shape, the pleated ridges come into contact with the wall surface of the cylindrical body and are deformed into a hook shape, and the ridges deformed into a hook shape are joined to each other. Since the adhesive applied to the parts leaks out and sticks, the ridge exerts the effect of the anchor more strongly in the adhesive layer formed by sticking, and the tubular bodies are connected to each other via the connecting ring. The integration of can be made more robust.

Since the protruding portions having flexibility are formed along the circumferential direction on the upper and lower end surfaces of the annular ring body, when the connecting ring is mounted in the cylindrical body concave portion, the protruding portions are formed on the upper and lower portions of the cylindrical body concave portion. Since it comes into contact with the cylindrical body, it is possible to more reliably prevent the adhesive from leaking from the concave portion of the cylindrical body to the inside or the outside of the cylindrical body. Further, even if the upper and lower portions of the hollow portion of the tubular body have irregularities or dimensional errors in the vertical direction, this can be absorbed by the deformation of the projecting portion, and the situation on the tubular body side can be flexibly dealt with.

Further, since the storage portions capable of storing the protruding portions are provided on the upper and lower end surfaces of the annular ring body, when the connecting ring is mounted in the concave portion of the cylindrical body, the fitting portions greatly deform the protruding portions. Even so, the deformation can be sufficiently absorbed, and it is possible to more flexibly deal with the dimensional error in the vertical direction of the cylindrical recess.

Further, since the upper and lower tubular bodies are joined to each other in a substantially horizontal plane, even if a lateral displacement force is exerted on the tubular bodies due to an earthquake or the like, the tubular bodies are not unduly applied. , The tubular body is not damaged. Moreover, since the annular ring body of the connecting ring is made of a flexible material, the flexibility of the connecting ring can absorb the lateral shift force and suppress the lateral shift.

Further, since the annular ring body is made of a flexible material and its longitudinal section is U-shaped, the annular ring body itself has elasticity, and the elastic force of the annular ring causes the connecting ring to have a cylindrical shape. Since they are pressed against the joints between the single bodies and are securely attached, the tubular bodies can be more firmly integrated with each other.

[Brief description of drawings]

FIG. 1 is a vertical sectional view showing the overall structure of an underground structure.

FIG. 2 is a view showing a side surface and a vertical section of a connecting ring.

FIG. 3 is an enlarged view of part A in FIG.

FIG. 4 is a diagram showing a second embodiment of the present invention.

FIG. 5 is a diagram showing a third embodiment of the present invention.

FIG. 6 is a diagram showing a fourth embodiment of the present invention.

FIG. 7 is a diagram showing a fifth embodiment of the present invention.

FIG. 8 is a diagram showing a sixth embodiment of the present invention.

FIG. 9 is a diagram showing a seventh embodiment of the present invention.

FIG. 10 is a diagram showing an eighth embodiment of the present invention.

[Explanation of symbols]

1 Underground Structure 2 Underground Structure Lid 2a Lid Main Body 2b Receiving Frame 3 Cylindrical Body (Cylinder for Underground Structure) 3a, 3b, 3c Joints 3i, 3j, 3k Recess (Cylindrical Body Recess) 4 For Connection Ring 5 Bottom plate 6 Sewage pipe 7 Space portion 20 Height adjusting members 31, 32, 33, 34 Cylindrical body single body 31a Through holes 32a, 33a Wall surface 40 Annular ring body 40a Outer peripheral surfaces 41, 42, 43, 44 of the annular ring body Pleat-like protrusions (projections, protrusions) 103 Cylindrical body (cylindrical body for underground structure) 104 Connection ring 132, 133 Cylindrical body unit 132a, 133a Inner wall surface (wall surface) 132b Receiving portion 140 Annular ring body 140r, 140s Bent parts 141, 142, 143, 144 Pleat-like projections (projections, projections) 203 Cylindrical body (cylindrical body for underground structure) 203j Recess (cylindrical body recess) 204 Connection ring 232 , 233 Cylindrical bodies alone 232a, 233a Wall surface 240 Annular ring main body 240a Outer peripheral surfaces 240c, 240d of annular ring main body 241 Projection 241 Pleat projections (projections, projections) 303 Cylindrical body (cylindrical body for underground structure) 303j Recessed portion (cylindrical body recessed portion) 304 Connection ring 332, 333 Cylindrical body single body 332a, 333a Wall surface 340 Annular ring main body 340b Inner peripheral surface 341, 342, 343, 344 of the annular ring main body (projection, protrusion) 403 tubular body (cylindrical body for underground structure) 403j ring storage chamber 404 connecting rings 432, 433 tubular bodies 432a, 433a wall surface 440 annular ring main body 440a outer peripheral surface 440b of annular ring main body Inner peripheral surfaces 441, 442, 443, 444 Pleat-like projections (projections, projections) 503 Cylindrical body (underground structure Cylindrical body 503j Recessed portion (cylindrical body recessed portion) 504 Connection ring 532, 533 Cylindrical body single body 532a, 533a Wall surface 540 Annular ring main body 540c, 540d Projection portion 540m Inner body 540n Outer body 541 Ruffled protrusion , Protrusion 603 tubular body (cylindrical body for underground structure) 604 connecting ring 610 receiving portion 620 inner lid 633, 634 tubular body single body 703 tubular body (cylindrical body for underground structure) 703b joint portion 703j Recessed portion (cylindrical body recessed portion) 703m, 703n Upper and lower portions of the recessed portion 704 Connection ring 732, 733 Cylindrical body single body 732a, 733a Wall surface (recessed peripheral surface) 740 Annular ring body 740a Outer peripheral surface 740c, 740d of annular ring body Projection parts 740e, 740f Storage part 741 Projection (projection part) 742 Rib

─────────────────────────────────────────────────── ─── Continuation of the front page (56) Reference JP-A-10-266316 (JP, A) Actually open 61-164343 (JP, U) Actually open 53-126357 (JP, U) Utility model registration 2569629 ( JP, Y2) (58) Fields surveyed (Int.Cl. ⁷ , DB name) E02D 29/12

Claims (22)

(57) [Claims] 1. A cylindrical body that is vertically stacked via an adhesive, and a connecting ring that is laid across a joint portion between the upper and lower cylindrical bodies, wherein the connecting ring has an annular shape. The ring body is provided with a protrusion having flexibility, and the protrusion contacts the wall surface of the single tubular body in a state where the connecting ring is laid across the joint between the single tubular bodies. A tubular body for underground structures, which is in contact with each other. 2. The tubular body for an underground structure according to claim 1, wherein the protrusion is formed as a protrusion and is provided over the entire length in the circumferential direction of the annular ring body. 3. The projections are formed as projections, are provided in plural along the entire length of the annular ring body in the circumferential direction, and are located above and below the joint between the tubular bodies. The tubular body for an underground structure described in. 4. The tubular structure for an underground structure according to claim 1, wherein a plurality of the protrusions are formed as protrusions and are provided at intervals in the circumferential direction along the vertical direction of the annular ring body. body. 5. The tubular body for an underground structure according to claim 4, wherein the protrusions are provided so that the height of the protrusions becomes lower toward the upper and lower ends. 6. The tubular body for an underground structure according to claim 2, wherein the protrusion is formed in a pleated shape. 7. The connecting ring is formed with a projecting portion having flexibility along the circumferential direction on each of the upper and lower end surfaces of the annular ring body, and the connecting ring is joined to the joint portion of the tubular bodies. It is characterized in that the protruding portion is in contact with upper and lower parts of the tubular body concave portion in a state of being mounted in a tubular body concave portion provided along the tubular body concave portion and extending over a joint portion facing the tubular body concave portion. Claim 1
The tubular body for underground structure according to any one of claims 6 to 7. 8. A cylindrical body that is vertically stacked with an adhesive, and a connecting ring that is laid across a joint portion between the upper and lower cylindrical bodies, wherein the connecting ring has an annular shape. It is configured by providing flexible projections along the circumferential direction on the upper and lower end surfaces of the ring main body, and the connecting ring is mounted in the tubular body recess provided along the joint between the tubular bodies. A tubular body for an underground structure, wherein the projecting portion is in contact with upper and lower portions of the tubular body concave portion in a state of being laid across the joint portion facing the tubular body concave portion. 9. The upper and lower end surfaces of the annular ring body are
The tubular body for an underground structure according to claim 7 or 8, further comprising a storage portion capable of storing the protruding portion. 10. The underground structure according to any one of claims 1 to 9, wherein the joining portions of the upper and lower tubular bodies are substantially horizontal surfaces, and the annular ring body is made of a flexible material. Tubular body. 11. The tubular body for an underground structure according to claim 1, wherein the annular ring body is made of a flexible material and has a U-shaped vertical cross section. 12. A connecting ring, which is laid across a joint portion of tubular bodies that are vertically stacked to form a tubular body for an underground structure, wherein the connecting ring comprises an annular ring main body, A ring for connecting a tubular body for an underground structure, comprising: a protrusion provided on the annular ring body and having a tip abutting against a wall surface of the tubular body alone. 13. The ring for connecting a tubular body for an underground structure according to claim 12, wherein the protrusion is formed as a ridge and is provided over the entire length in the circumferential direction of the annular ring body. 14. The protrusion is formed as a protrusion and is provided in plural along the entire length in the circumferential direction of the annular ring body so as to be located above and below the joint between the tubular bodies. The ring for connecting a tubular body for an underground structure according to claim 12. 15. The tubular structure for the underground structure according to claim 12, wherein the protrusions are formed as protrusions and are provided in plural at intervals in the circumferential direction along the vertical direction of the annular ring body. Ring for connecting the body. 16. The ring for connecting a tubular body for an underground structure according to claim 15, wherein the protrusion is provided so that its height becomes lower toward the upper and lower ends. 17. The ring for connecting a tubular body for an underground structure according to claim 13, wherein the protrusion is formed in a pleated shape. 18. A ring-shaped ring main body of the connecting ring is formed with a projecting portion having flexibility in the upper and lower end surfaces along the circumferential direction, and the connecting ring is connected to a joint portion between the tubular bodies. It is configured such that the protruding portion abuts on the upper and lower portions of the tubular body concave portion in a state of being mounted in a tubular body concave portion provided along the tubular body concave portion and straddling a joining portion facing the tubular body concave portion. Item 12
A ring for connecting a tubular body for an underground structure according to any one of 1 to 17. 19. A connecting ring which is laid across a joint portion of tubular bodies which are vertically stacked and which constitute a tubular body for an underground structure, wherein the connecting ring comprises an annular ring main body, A tubular body in which the connecting ring is provided along the joint between the tubular bodies, and a projecting portion having flexibility formed on each of the upper and lower end surfaces of the annular ring body along the circumferential direction. An underground structure, characterized in that, in a state of being mounted in a body recess and straddling a joint facing the recess of the tubular body, the projecting portion is configured to abut on upper and lower parts of the recess of the tubular body. Ring for connecting tubular bodies. 20. The ring for connecting a tubular body for an underground structure according to claim 18 or 19, wherein a storage portion capable of storing the protruding portion is provided on each of upper and lower end surfaces of the annular ring body. 21. The ring for connecting a tubular body for an underground structure according to claim 12, wherein the annular ring body is made of a flexible material. 22. The underground structure tubular body connection according to claim 12, wherein the annular ring main body is made of a flexible material and has a U-shaped longitudinal section. Ring.