JP2000080668A - Cylindrical body for underground structure, and ring for connecting cylindrical body for underground structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To firmly integrate cylindrical body unit bodies with each other and to certainly prevent side slipping of a cylindrical body even when it receives strong pressure from the side. SOLUTION: A cylindrical body 3 for an underground structure has cylindrical body unit bodies 32, 33 vertically accumulated through adhesives and a ring 4 for connection to be provided to straddle over a connecting part 3b of the upper and lower cylindrical body unit bodies, and the ring 4 for connection is constituted by providing gusset type projections 41, 42, 43, 44 as projected lines (projected parts) having flexibility on a ring main body 40. Thereby, the wrinkle type projections 41, 42, 43, 44 make contact with wall surfaces 32a, 33a of the cylindrical body unit bodies 32, 33 in a state where the ring 4 for connection is provided to straddle over the connecting part 3b of the cylindrical body unit bodies 32, 33.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cylinder for an underground structure such as a manhole and the like, and a straddle between joints of single cylinders constituting the cylinder for an underground structure. It relates to a connection ring to be installed.

[0002]

2. Description of the Related Art In most cases, underground structures such as manholes are formed as a cylindrical body by stacking a plurality of cylindrical bodies vertically on the ground, and the upper and lower cylindrical bodies are placed on the lower side. An adhesive such as a synthetic resin adhesive is applied to the upper end surface of the cylindrical body positioned, and the cylindrical body positioned above is stacked and connected thereon.

[0003] At that time, as a configuration for preventing the displacement of the upper and lower cylindrical bodies alone and improving the sealing property, for example, as described in Utility Model Registration No. 2569629,
A connection ring formed by forming a flange portion outward on an outer peripheral surface of a frame portion formed of a band-shaped member in a ring shape is applied to an inner peripheral surface near a joint between upper and lower cylindrical bodies alone,
A configuration is known in which the flange is embedded in an adhesive applied to a joint.

[0004] In the cylindrical body for underground structures having the above-described structure,
Since the ring-shaped frame unit integrates the cylindrical bodies alone, the connection strength is increased, and the adhesive applied to the joint can be prevented from leaking into the cylindrical body.

[0005]

However, since the above-mentioned frame portion has a smooth outer peripheral surface, a certain degree of unevenness and an error in the inner diameter of the inner peripheral surface of a cylindrical body formed of concrete or the like occur. Therefore, a gap is generated between the outer peripheral surface of the frame portion and the inner peripheral surface of the cylindrical body. For this reason, the cylindrical body itself cannot always be firmly integrated by the connecting ring, and if strong earth pressure or the like acts on the cylindrical body from the side due to passage of a heavy vehicle, etc., the cylindrical body causes lateral displacement. In addition, the connection ring may come off.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and allows the cylindrical bodies to be more firmly integrated with each other, and ensures that the lateral displacement of the cylindrical body even when a strong pressure is applied from the side. An object of the present invention is to provide a tubular body for an underground structure and a connecting ring for connecting the tubular body for an underground structure that can be prevented.

[0007]

In order to achieve the above object, a cylindrical body for an underground structure according to the present invention comprises a single cylindrical body stacked vertically with an adhesive, and a single cylindrical body formed vertically. A connection ring laid over the joint portion between the two, and the connection ring is configured by providing a flexible projection on an annular ring main body, and the connection ring is formed by a single cylindrical body. The protrusion is in contact with the wall surface of the tubular body alone in a state of being laid on the joint portion of (1).

Further, the connecting ring of the tubular body for underground structure according to the present invention is a connecting ring which is provided so as to span a joint portion between the cylindrical bodies which are vertically stacked and which constitute the tubular body for underground structure. A ring, wherein the connection 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 cylindrical body alone, I have.

[0009] In the above-mentioned structure of the cylindrical body for the underground structure and the connecting ring thereof, when the connecting ring is straddled at the joint between the upper and lower cylindrical bodies, the projecting portion of the connecting ring is provided. Abuts against the wall surface of the cylindrical body alone. Since the protrusion has flexibility, even if there is unevenness or dimensional error in the radial direction on the wall surface of the cylindrical body alone, it can be absorbed by deformation of the protrusion, and the wall and the protrusion are strongly In close contact. The adhesive applied to the joining portion leaks out and is fixed to the protrusion contacting the wall surface, and the protrusion is fixed in the adhesive layer formed by fixing and acts as an anchor. . Therefore, the cylindrical bodies alone are firmly integrated with each other via the connecting ring having the projection.

[0010] Further, the tubular body for underground structure of the present invention comprises a tubular body which is vertically stacked via an adhesive, and a connecting ring which is laid over a joint between the upper and lower tubular bodies. The connection ring is configured by providing a flexible protrusion along the circumferential direction on each of the upper and lower end surfaces of the annular ring main body, and joining the connection ring to each other of the cylindrical bodies alone. Attached to the cylindrical body recess provided along the portion, and in a state of straddling the joint facing the cylindrical body recess, the protruding portion is in contact with the upper and lower portions of the cylindrical body recess I have.

Further, the connecting ring of the tubular body for underground structure according to the present invention is a connecting ring which is provided so as to extend over a joint portion between the cylindrical bodies which are vertically stacked and which constitute the tubular body for underground structure. A ring, the connection ring having an annular ring main body, and a flexible protrusion formed along the circumferential direction on each of upper and lower end surfaces of the annular ring main body, In a state in which the projection is mounted on the cylindrical body concave portion provided along the joint between the cylindrical bodies alone and laid across the joint facing the cylindrical body concave portion, the protruding portions are provided at upper and lower portions of the cylindrical body concave portion. It is characterized in that it is configured to abut.

[0012] In the above-mentioned structure of the cylindrical body for underground structures and the ring for connecting the same, the connecting ring is attached to the cylindrical body concave portion provided along the joint between the upper and lower cylindrical bodies, and the cylindrical body is provided with the connecting ring. When the connection portion is straddled over the joint portion facing the concave portion of the cylindrical body, the protruding portion of the connecting ring contacts the upper and lower portions of the concave portion of the cylindrical body portion in this state. Since the protruding portion has flexibility, even if there are irregularities and dimensional errors in the vertical direction in the upper and lower portions of the cylindrical concave portion, the deformation of the protruding portion can absorb the errors. Then, the adhesive applied to the joining portion leaks and adheres to the protruding portion abutting on the upper and lower portions of the cylindrical body concave portion,
The protrusion surely prevents the adhesive from leaking out of the concave portion of the cylindrical body and leaking into or out of the cylindrical body.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION In the tubular body for underground structures and the ring for connecting the same according to the present invention, the projection is formed in a ridge and provided along the entire length of the annular ring main body in the circumferential direction. In addition, the ridge exerts a stronger effect as an anchor, the cylindrical bodies are more strongly integrated with each other via the connecting ring, and the adhesive leaked from the joint portion can be reliably received.

In the tubular body for underground structures and the connecting ring thereof according to the present invention, a plurality of protrusions are formed on the ridges and a plurality of protrusions are provided along the entire circumferential direction of the annular ring main body. Because it was located above and below the joint of the two, the ridge above and below this joint, the wall surface of the cylindrical body, and the peripheral surface of the annular ring body, an annular closed space is formed,
In this space, the adhesive applied to the joining portion leaks out, fills up, and is fixed, so that the integration of the cylindrical bodies alone via the connecting ring becomes stronger. Also, since the adhesive is trapped in this space and does not leak outside,
Leakage of the adhesive to the inside or outside of the tubular body is reliably prevented.

In the tubular body for underground structures and the connecting ring thereof according to the present invention, a plurality of protrusions are formed in the form of ridges and a plurality of protrusions are provided at intervals in the circumferential direction along the vertical direction of the annular ring main body. Therefore, it is easy to mount the connection ring to the joint between the cylindrical bodies from above.

Further, in the cylindrical body for 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 main body are directed toward the respective upper and lower ends. According to the present invention, the height of the connecting ring is reduced, so that it is easier to attach the connecting ring to the joint between the cylindrical bodies from above. In the tubular body for underground structures and the connecting ring of the present invention, the ridge of the connecting ring is formed in a pleated shape. The adhesive applied to the joint leaks out and is fixed to the keyed ridge, and the ridge acts as an anchor in the adhesive layer formed by the bonding. Demonstrate more strongly.

In the cylindrical body for underground structures and the connecting ring thereof according to the present invention, the upper and lower end faces of the annular ring main body are provided with housing portions capable of housing the projecting portions. When it is attached to the projection, even if the deformation of the protruding part becomes large due to the fitting, the deformation can be sufficiently absorbed, and it can flexibly cope with the dimensional error in the vertical direction of the cylindrical concave part. be able to.

Further, in the tubular body for underground structures of the present invention, since the joint between the upper and lower tubular bodies is substantially a horizontal plane, a force in the direction of lateral displacement is applied to the tubular body due to passage of a heavy vehicle or the like. Even if the cylindrical body itself is not subjected to excessive force, damage to the cylindrical body alone is prevented, and the annular ring body of the connection ring is made of a flexible material. Flexibility absorbs lateral displacement force and suppresses lateral displacement.

Furthermore, in the tubular body for underground structures and the connecting ring thereof according to the present invention, the annular ring main body is made of a flexible material and has a U-shaped longitudinal cross section, so that the annular ring main body itself is formed. Has elasticity, and the connecting ring is pressed by the elastic force of the connecting portion of the cylindrical body alone, and is securely attached, so that the integration of the cylindrical bodies alone can be made stronger. .

[0020]

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

FIG. 1 is a longitudinal sectional view showing the entire structure of the underground structure. In the figure, an underground structure 1 is a vertical hole-shaped manhole leading to a sewer pipe, a foundation concrete is poured into the bottom of a hole excavated at an installation location, and a bottom plate 5 is placed on the foundation concrete. A tubular body 3 for an underground structure (hereinafter, simply referred to as a “cylindrical body”) 3 is placed on the bottom plate 5, and a receiving frame 2 b and a lid are further placed on the tubular body 3 via a height adjusting member 20. An underground structure lid 2 composed of a main body 2a is mounted.

The cylindrical body 3 is formed by sequentially stacking the cylindrical bodies 31, 32, 33, and 34 from the lower stage side, and joining portions 3a and 3b of the cylindrical bodies alone. , 3c, the inner wall surface of each cylindrical body alone is cut out along the circumferential direction to form cylindrical body concave portions (hereinafter simply referred to as “recesses”) 3i, 3j, 3k. . Also, a through-hole 31a is opened in the lowermost cylindrical body 31,
The sewer pipe 6 is connected.

The above-mentioned joints 3a, 3b, 3c
This is a joining portion when the upper and lower end surfaces of each tubular body are abutted, and these joining portions 3a, 3b, 3c are substantially horizontal with respect to the upright tubular body 3.

Each of the joints 3a, 3b, 3c has
The connection rings 4, 4, 4 are straddled while being mounted in the recesses 3i, 3j, 3k.

Next, the configuration of the connection ring 4 and the connection structure in the case where the connection ring 4 is laid across the joints 3a, 3b, 3c will be described with reference to FIGS. 2 and 3. In addition, since the connection structure is the same at any of the joints, the connection structure at the joint 3b will be described in the following description.

FIG. 2 is a view showing a side surface and a longitudinal section of the connection ring 4, and FIG. 3 is an enlarged view of a portion A in FIG. The connection ring 4 is made of a flexible material, for example, a synthetic resin such as polypropylene, and as shown in FIG. 2, the entire length of the annular ring main body 40 along the circumferential direction of the outer peripheral surface 40a is flexible. Ridges 41, 4 as ridges (projections) having
2, 43 and 44 are provided. Then, in a state where the connection ring 4 is straddled over the joining portion 3b, as shown in FIG. 3, the upper ones of the above-mentioned pleats 41, 42, 43 and 44 are joined together. The fold-like projections 43 and 44 located above the portion 3b and on the lower side
b.

The size of the connection ring 4 is such that the outer diameter of each of the fold-like projections 41, 42, 43, 44 is the same as the cylindrical body 3.
The connecting rings 4 are configured to be larger than the inner diameters of the wall surfaces 32a, 33a (peripheral surfaces of the recesses 3j) of the connecting projections 4a, 3b. 42, 43, and 44 abut against the wall surfaces 32a, 33a (peripheral surface of the concave portion 3j) of the cylindrical bodies 32, 33 and bend,
Deforms into a key shape.

In this embodiment, the pleated projections 41, 4 are used.
Although 2, 43 and 44 are formed independently along the circumferential direction of the annular ring main body 40, the fold-like projections may be formed spirally and continuously along the circumferential direction of the annular ring main body 40. good. The connection ring 4 is made of synthetic resin such as polypropylene. However, the connection ring 4 is not limited to this as long as it is a flexible material. For example, hard rubber or metal may be used.

The work of laying the connection ring 4 over the joint 3b is performed in the following procedure. First, an adhesive is applied to the upper end surface of the cylindrical body 32 having been set. Next, the lower half of the connection ring 4 is inserted into the concave portion 3 on the cylindrical body 32 side from above.
j. At this time, the fold-like projections 43 and 44 abut on the wall surface 32a (the peripheral surface of the concave portion 3j) of the cylindrical body 32 and bend, so that it is in a key-like deformed state. Subsequently, the tubular body 33 is placed on the tubular body 32. As a result, the upper end surface of the tubular body 32 and the lower end face of the tubular body 33 are joined with the adhesive, and the joint 3b including the adhesive layer is formed. The upper half of the connection ring 4 is attached to the concave portion 3j on the cylindrical body 33, and the fold-shaped projections 41 and 42 abut against the wall surface 33a of the cylindrical body 33 (the peripheral surface of the concave portion 3j). And bends into a key-like state. Since the fold-shaped projection 42 and the fold-shaped projection 43 are located above and below the joint 3b, the fold-shaped projections 42, 43 and the wall surface 32a,
The annular closed space 7 is formed by the outer peripheral surface 40a of the annular ring main body 40 and the annular ring 33a.

In the connection structure having the above structure, when the cylindrical body 33 is stacked on the cylindrical body 32, the cylindrical body 32
The adhesive applied to the top surface of the is pressed and leaks out,
The adhesive leaking to the inner peripheral wall surface flows into the space 7 described above. Since the space 7 is a closed space, the leaked adhesive fills the space 7 without coming out of the space 7 to the outside and is fixed as it is.

Therefore, the cylindrical body 32 and the cylindrical body 33 are integrated by the connecting ring 4 via an adhesive, and the fold-like projections 42 and 43 of the connecting ring 4 deformed into a hook shape. Since it acts as an anchor in the adhered adhesive layer, the integration by the connecting ring 4 is strengthened.
Further, even if there are irregularities or dimensional errors in the wall surfaces 32a, 33a of the cylindrical bodies 32, 33, the pleated projections 41, 42,
This can be absorbed by 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 structure, the joint 3b between the upper and lower cylindrical bodies 32, 33 is formed substantially in a horizontal plane, so that even if a force in the direction of lateral shift is applied to the cylindrical body 3, It is possible to prevent the cylindrical bodies 32 and 33 from being damaged without applying excessive force to the cylindrical bodies 32 and 33. Moreover, since the annular ring main body 40 of the connection ring 4 is made of a flexible material, the connection ring 4 can absorb a lateral displacement force due to its flexibility and can suppress the lateral displacement.

Further, since the concave portion 3j is formed in the vicinity of the joint portion 3b and the connecting ring 4 is attached to the concave portion 3j, the protrusion on the inner peripheral wall surface of the cylindrical body 3 may occur. In addition, the effective opening area of the cylindrical body 3 can be increased.

Next, various embodiments of the tubular body and the connecting ring thereof according to the present invention 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 recess 3j is formed in the vicinity of the joint 3b, and the connection ring 4 is mounted in the recess 3j. However, in the second embodiment,
The connection ring 1 is directly provided on the inner peripheral wall near the joint 103b.
04 is straddled.

In other words, the connection ring 104 in the second embodiment, like the connection ring 4 in the first embodiment, has an annular ring main body 140 and pleated projections 141 as ridges (projections). 142, 143, and 144, and bent portions 140r and 140s formed by bending the upper and lower ends of the annular ring body 140 outward at right angles. The connecting ring 104 is straddled over the joining portion 103b. When provided, the end surfaces of the bent portions 140r and 140s abut against the inner peripheral wall surfaces 132a and 133a of the cylindrical bodies 132 and 133, respectively. Further, a protruding receiving portion 132b is formed on the inner peripheral wall surface 132a of the lower cylindrical body 132 over the entire length in the circumferential direction, and the connection ring 1 attached from above is formed.
04 is received by the receiving portion 132b.

As described above, in the second embodiment, the connecting ring 104 is connected to the inner peripheral wall 132 of the cylindrical body 132, 133.
a, 133a, it is not necessary to form a concave portion in the cylindrical body 132, 133.

Also in the second embodiment, the ridges 141, 142, 143, 144 of the connection ring 104 are also provided.
Are the inner peripheral wall surfaces 132a, 13 of the cylindrical bodies 132, 133
It is deformed in a hook shape in contact with 3a, and has the same effect as in the first embodiment.

FIG. 5 is a view showing a third embodiment of the present invention. The connection ring 704 in this embodiment is provided with a strip-shaped rib 742 over the entire circumference at the center of the annular ring main body 740 in the vertical direction (vertical direction). Also,
A plurality of flexible ridges (protrusions) 741... Extend from the ribs 742 in the up-down direction along the up-down direction of the annular ring main body 740, and are arranged at substantially equal intervals in the circumferential direction. Is provided. The protruding ridges 741 are provided so that their heights become lower toward the upper and lower ends. In addition, protrusions 740c and 740d having flexibility over the entire length along the circumferential direction are formed on the upper and lower end surfaces of the annular ring main body 740.
At the base of each of 40c and 740d, a protrusion 740 is provided.
When c and 740d are bent, concave storage portions 740e and 740f that can store the bent portions are formed.

When the connecting ring 704 having the above structure is mounted on the concave portion 703j of the cylindrical body 703 and is provided so as to straddle the joint portion 703b facing the concave portion 703j, the ridges 741.
3j (wall 732 of cylindrical body 732, 733)
a, 733a) and projecting portions 740c, 740
d denotes upper and lower portions (upper and lower wall surfaces) 703 of the concave portion 703j.
m, 703n to deform. Therefore, the recess 70
3j and the outer peripheral surface 740a of the annular ring body 740
, Ridges 741, 741, and protrusions 740c, 740d
Then, the closed space is formed, and the adhesive leaked from the joint 703b flows into the closed space and is fixed in the closed space. That is, the adhesive leaking along the circumferential direction is
The adhesive blocked and fixed at 41 and 741 and leaked along the vertical direction is blocked and fixed at the projecting portions 740c and 740d.

Therefore, the cylindrical body 732 and the cylindrical body 733 stacked vertically are integrated by the connection ring 704 via an adhesive, and the connection ring 7
Since the ridges 741 of FIG. 04 act as anchors in the adhesive layer to which they are fixed, the integration by the connection ring 704 is strengthened. Further, even if there are irregularities or dimensional errors in the radial direction on the peripheral surface of the concave portion 703j, the flexible ridges 7
41 can be absorbed by the deformation, and the peripheral surface of the concave portion 703j and the ridges 741 are in close contact with each other. further,
Even if the upper and lower portions 703m and 703n of the concave portion 703j have irregularities and dimensional errors in the vertical direction, the upper and lower portions of the concave portion 703j can be absorbed by deformation of the flexible protruding portions 740c and 740d. , 70
3n and the protrusions 740c and 740d are in close contact with each other. In addition, the adhesive is securely confined and does not leak out, and it is possible to reliably prevent the adhesive from leaking to the inner peripheral wall side of the cylindrical body 703.

Further, since the storage portions 740e and 740f are provided at the upper and lower end surfaces of the annular ring main body 740 and at the roots of the protrusions 740c and 740d, respectively.
Due to the fitting when the connection ring 740 is mounted in the recess 703j, even if the deformation of the protrusions 740c and 740d increases, the deformation can be sufficiently absorbed by the storage portions 740e and 740f, and the vertical direction of the recess 703j Even if the dimensional error in the above becomes slightly large, it can flexibly cope with it.

Further, the ridges 741.
Since it is provided along the up-down direction of the connecting ring 40, the mounting of the connecting ring 704, which is performed by inserting the connecting ring 704 from above, is performed by using the ridges 741.
Can be performed smoothly, and the mounting operation can be easily performed. The easiness of the mounting operation is further enhanced by reducing the height of the ridges 741... Toward the upper and lower ends.

As in this embodiment, the ridges in the present invention are not limited to pleated ones. Even if the ridges are not pleated, the above-described effects can be obtained. In order to exert the action more strongly, it is preferable that the ridge is formed in a pleated shape so that the ridge is deformed in a key shape when it comes into contact with the wall surface (peripheral surface of the concave portion) of the cylindrical body.

FIG. 6 is a diagram showing a fourth embodiment of the present invention. This embodiment differs from the first embodiment in that
Six pleated protrusions 241 as protrusions (protrusions) formed on the connection ring 204 are formed not at the circumferential direction but at substantially equal intervals in the vertical direction (vertical direction).
Protrusions 240c are provided on upper and lower end faces of the annular ring body 240, respectively.
240d.

The connecting ring 204 having the above structure is connected to the cylindrical body 2.
03, the adhesive leaked out from the joining portion 203b is applied to the wall surface 2 of the cylindrical bodies 232 and 233.
32a, 233a (the peripheral surface of the concave portion 203j) and the outer peripheral surface 240a of the annular ring main body 240,
Most stick in that space. Even if a part of the space reaches the protruding portions 240c and 240d through the space, the protruding portions 240c and 240d abut against upper and lower portions (upper and lower edges) of the concave portion 203j to seal the concave portion 203j. Therefore, the adhesive does not leak out from the protruding portions 240c and 240d to the outside, as in the case of the first embodiment, and prevents the adhesive from leaking to the inner peripheral wall side of the cylindrical body 203. Can be reliably prevented.

In the fourth embodiment, the ridges 241...
233 is brought into contact with the wall surfaces 232a, 233a (peripheral surface of the concave portion 203j) so as to be deformed in a hook shape, and has the same effect as in the first embodiment.

FIG. 7 is a diagram showing a fifth embodiment of the present invention. This embodiment differs from the first embodiment in that
A concave portion 303j is formed on the outer peripheral wall surface side of the cylindrical body 303, while pleated protrusions 341, 342, 343, and 344 as ridges (projections) of the connection ring 304 are formed on the inner peripheral surface 340b of the annular ring main body 340. And this connection ring 3
04 is mounted in the concave portion 303j.

Also in this embodiment, the connection ring 304
The ridge-shaped projections 341, 342, 343, 344 of the cylindrical body 332, 333 have wall surfaces 332 a, 333 a (recess 3
03j) and is deformed into a hook shape by contacting the outer peripheral surface (03j), thereby achieving the same effect as in the first embodiment.

FIG. 8 is a view showing a sixth embodiment of the present invention. This embodiment differs from the first embodiment in that
By forming concave grooves along the circumferential direction at the center of the lower end surface in the thickness direction of the upper cylindrical body 433 and the center of the upper end surface of the lower cylindrical body 432 in the thickness direction, and combining them. A ring storage chamber 403j for storing the connection ring 404 is formed, while pleated projections 441, 442, 443 as ridges (projections) of the connection ring 404 are formed.
444 are formed on both the outer peripheral surface 440a and the inner peripheral surface 440b of the annular ring main body 440.
4 is attached to the ring storage chamber 403j.

In this embodiment, the connection ring 404 is also used.
The fold-shaped projections 441, 442, 443, 444 abut on the wall surfaces 432a, 433a (both peripheral surfaces of the ring storage chamber 403j) of the cylindrical bodies 432, 433, and are deformed in a hook shape. An effect similar to that of the first embodiment is obtained.

Furthermore, in this embodiment, the annular ring body 4
Since both the peripheral surfaces 440a and 440b of the 40 are fixed with an adhesive, the integration of the upper and lower cylindrical bodies through the connection ring 404 is further strengthened.

FIG. 9 shows a seventh embodiment of the present invention.
FIG. 4A is a diagram illustrating a state in which a connection ring 504 is mounted on a tubular body 503, and FIG. 4B is a diagram illustrating a longitudinal section of the connection ring 504 before mounting. This embodiment is different from the first embodiment in that the outer periphery of the annular ring main body 540 has a double structure, that is, the inner main body 540m and the outer main body 540n are connected at one end to form a U-shaped vertical section. And the outer body 540n, like the third embodiment,
As ridges (projections), six pleated projections 541 are formed at predetermined intervals in the vertical direction (up and down direction), and projections 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 body 540n is formed so as to open toward the inner body 540m from one end to the other end in a free state before mounting, as shown in FIG. When the ring main body 540 is mounted in the concave portion 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 concave portion 503j via the fold-shaped protrusion 541.

That is, in this embodiment, the annular ring body 540 itself has elasticity, and the elasticity of the annular ring main body 540 causes the connecting ring 504 to be pressed against the joining portion 503b of the cylindrical bodies 532 and 533, thereby being securely attached. Therefore, the integration of the cylindrical bodies 532 and 533 can be made stronger.

As in the case of the fourth embodiment, the adhesive leaking from the joint 503b is removed from the cylindrical body 53.
2,533 flows into the space between the wall surfaces 532a, 533a (peripheral surface of the concave portion 503j) and the outer peripheral surface of the outer main body 540n, and most of them are fixed in the space. Even if a part of it sewn the space and reached the protrusions 540c, 540d,
The protruding portions 540c and 540d abut against upper and lower portions (upper and lower wall surfaces) of the concave portion 503j to seal the concave portion 503j, so that the adhesive does not leak outside from the protruding portions 540c and 540d. Adhesive is cylindrical body 503
Can be reliably prevented from leaking to the inner peripheral wall side of the device.

Further, as in the case of the fourth embodiment, the pleat-shaped projections 541 of the connecting ring 504
32, 533 wall surfaces 532a, 533a (recess 503j
The peripheral surface of the first embodiment is deformed into a hook shape, and the same effect as in the first embodiment can be obtained.

FIG. 10 is a diagram showing an eighth embodiment of the present invention. This embodiment differs from the first embodiment in that
A protruding receiving portion 610 is formed over the entire length of the connection ring 604 between the lower cylindrical body 633 and the upper cylindrical body 634 along the circumferential direction of the inner circumferential surface thereof. However, the point is that the inner lid 620 can be placed on the receiving portion 610.

With the above construction, the inner lid 620, which could not be placed in the past, can be placed. This prevents fall, insulation against heat generated from inside the underground structure, or odor. The interruption can be easily performed. The receiving portion 610 for the inner lid 620 can be formed on a connection 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) cylindrical body has been described. Of course, the present invention is applicable to a square (square cylindrical) cylindrical body. It can also be applied to shapes.

Also, the first, second, fifth, sixth and eighth
In each of the embodiments, the ridge is provided along the circumferential direction of the annular ring main body, and in the third, fourth and seventh embodiments, in the longitudinal direction (up and down direction) of the annular ring main body. In the above, the protrusions provided in the circumferential direction and the protrusions provided in the up-down direction may be reversely combined.

Further, in each of the embodiments, the projections according to the present invention are provided continuously in the circumferential direction or the vertical direction as the projections, but the projections are not limited to such strip-shaped projections. A plurality of protrusions such as hemispheres, triangular pyramids, and quadrangular prisms may be provided intermittently.

[0063]

Since the tubular body and the connecting ring thereof according to the present invention have the above-described structure, the following advantages can be obtained.

The connecting ring is formed by providing a flexible projection on the annular ring main body, and when the connection ring is laid over the joint between the cylindrical bodies alone, the projection becomes cylindrical. Since it is configured to contact the wall surface of the single body, even if there is unevenness or dimensional error in the radial direction on the wall surface of the cylindrical body alone, it can be absorbed by deformation of the flexible projection, The wall surface and the projection can be strongly adhered. In addition, the adhesive applied to the joint leaks out and is fixed to the protrusion contacting the wall surface, and the protrusion is fixed in the adhesive layer formed by fixing and acts as an anchor. . Therefore, the cylindrical bodies alone are firmly integrated with each other via the connecting ring having the projection, and the cylindrical body can be made more rigid.

Also, since the projection is formed as a ridge, and the ridge is provided along the entire length of the annular ring main body in the circumferential direction,
The ridge can more strongly exert the function as an anchor, can further integrate the cylindrical bodies more strongly, and can reliably receive the adhesive leaked from the joint.

Also, a plurality of ridges are provided along the circumferential direction of the annular ring main body in the entire length, and are positioned above and below the joint between the cylindrical bodies alone. The wall surface of the cylindrical body and the peripheral surface of the annular ring body form a closed space, in which the adhesive applied to the joint leaks out and fills and is fixed. It is possible to make the integration of the cylindrical bodies through the through-hole stronger, and since the adhesive is confined in this space and does not leak out, it is necessary to reliably prevent the leakage of the adhesive Can be.

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

Further, since the ridge is formed in a pleated shape, the pleated ridge abuts against the wall surface of the cylindrical body alone and is deformed into a hook shape. Since the adhesive applied to the part leaks out and is fixed, the ridge exerts the effect of the anchor more strongly in the adhesive layer formed by fixing, and the cylindrical body alone through the connecting ring Can be more firmly integrated.

The upper and lower end surfaces of the annular ring main body are formed with flexible projections along the circumferential direction. When the connecting ring is mounted in the cylindrical concave portion, the projecting portions are moved to the upper and lower portions of the cylindrical concave portion. Therefore, it is possible to more reliably prevent the adhesive from leaking into or out of the cylindrical body from the cylindrical body concave portion. Furthermore, even if there are irregularities and dimensional errors in the vertical direction in the upper and lower portions of the cylindrical body concave portion, these can be absorbed by deformation of the protruding portion, and the situation on the cylindrical body side can be flexibly handled.

Further, since the storage portions capable of storing the protruding portions are provided on the upper and lower end surfaces of the annular ring main body, when the connecting ring is mounted on the cylindrical concave portion, the deformation of the protruding portion is large due to the fitting. The deformation can be sufficiently absorbed even if it is, and it is possible to more flexibly cope with a dimensional error in the vertical direction of the cylindrical concave portion.

Further, since the joint between the upper and lower cylindrical bodies is made substantially horizontal, even if a lateral displacement force is applied to the cylindrical body due to an earthquake or the like, no excessive force is applied to the cylindrical body alone. However, the cylindrical body alone is not damaged. Moreover, since the annular ring main body of the connecting ring is made of a flexible material, the connecting ring can absorb a lateral displacement force due to its flexibility and can suppress the lateral displacement.

Further, since the annular ring main body is made of a flexible material and has a U-shaped longitudinal section, the annular ring main body itself has elasticity, and the elasticity of the annular ring main body makes the connecting ring a cylindrical body. Since it is pressed to the joining portion of the single bodies and is securely attached, the integration of the single cylindrical bodies can be made stronger.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing the entire configuration of an underground structure.

FIG. 2 is a diagram showing a side surface and a longitudinal section of a connection ring.

FIG. 3 is an enlarged view of a portion A in FIG. 1;

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]

DESCRIPTION OF SYMBOLS 1 Underground structure 2 Cover for underground structure 2a Cover main body 2b Receiving frame 3 Cylindrical body (cylindrical body for underground structure) 3a, 3b, 3c Joint 3i, 3j, 3k Concave part (cylindrical body concave part) 4 Connection Ring 5 Bottom plate 6 Drain pipe 7 Space portion 20 Height adjusting member 31, 32, 33, 34 Single cylindrical body 31a Through hole 32a, 33a Wall surface 40 Annular ring main body 40a Outer peripheral surface of annular ring main body 41, 42, 43, 44 Pleated protrusions (protrusions, protrusions) 103 Cylindrical body (cylindrical body for underground structure) 104 Connecting ring 132, 133 Single cylindrical body 132a, 133a Inner peripheral wall surface (wall surface) 132b Receiving portion 140 Ring body 140r, 140s Folded portions 141, 142, 143, 144 Pleated protrusions (protrusions, protrusions) 203 Cylindrical body (cylindrical body for underground structure) 203j Depression (cylindrical body recess) 204 Connection Rings 232, 233 Single cylindrical body 232a, 233a Wall surface 240 Annular ring main body 240a Outer peripheral surface of annular ring main body 240c, 240d Projection 241 Pleated projection (projection, projection) 303 Cylindrical body (cylindrical for underground structure) Body) 303j Concave part (cylindrical body concave part) 304 Connection ring 332, 333 Cylindrical body unit 332a, 333a Wall surface 340 Annular ring main body 340b Inner peripheral surface 341, 342, 343, 344 of annular ring main body 403 cylindrical body (cylindrical body for underground structure) 403j ring storage chamber 404 connecting ring 432,433 cylindrical body alone 432a, 433a wall surface 440 annular ring main body 440a outer peripheral surface of annular ring main body 440b annular ring Inner peripheral surface of main body 441, 442, 443, 444 503 Cylindrical body (cylindrical body for underground structure) 503j Concave part (cylindrical body concave part) 504 Connection ring 532, 533 Single cylindrical body 532a, 533a Wall surface 540 Annular ring main body 540c, 540d Projection 540m Inner main body 540n Outer Main body 541 Pleated projections (protrusions, protrusions) 603 Cylindrical body (cylindrical body for underground structure) 604 Connection ring 610 Receiver 620 Inner lid 633, 634 Cylindrical body single piece 703 Cylindrical body (underground structure) 703b, 703n Upper and lower portions of the concave portion 704 Connecting ring 732, 733 Single cylindrical member 732a, 733a Wall surface (peripheral surface of concave portion) 740 Ring body 740a Annular Outer peripheral surface of ring body 740c, 740d Projection 740e, 740f Storage 741 Ridge (projection) 7 2 ribs

Claims (22)

[Claims] 1. A cylindrical body which is vertically stacked via an adhesive, and a connecting ring which is laid over a joint between the upper and lower cylindrical bodies, wherein the connecting ring has an annular shape. The ring body is provided with a flexible protrusion, and the connection ring is straddled over a joint between the cylindrical bodies, and the protrusion contacts the wall surface of the cylindrical body alone. A cylindrical body for an underground structure, which is in contact with the cylindrical body. 2. The underground structure tubular body according to claim 1, wherein the protrusion is formed as a protrusion and is provided over the entire length along the circumferential direction of the annular ring main body. 3. The projecting portion is formed as a projecting portion and is provided in a plurality of lengths along the circumferential direction of the annular ring main body, and is located above and below a joining portion between the cylindrical bodies. 4. The cylindrical body for underground structures according to 1. 4. The cylindrical structure for an underground structure according to claim 1, wherein the plurality of protrusions are formed as protrusions and are provided at intervals in a circumferential direction along a vertical direction of the annular ring main body. body. 5. The underground structure tubular body according to claim 4, wherein the ridge is provided so that its height becomes lower as it goes toward the upper and lower ends. 6. The underground structure tubular body according to claim 2, wherein the ridge is formed in a pleated shape. 7. The connecting ring is provided with protrusions having flexibility along the circumferential direction on upper and lower end faces of the annular ring main body, and the connecting ring is joined to a cylindrical body by itself. The protrusion is attached to the cylindrical body recess provided along, and in a state of straddling the joint facing the cylindrical body recess, the protruding portion is in contact with the upper and lower parts of the cylindrical body recess. Claim 1
A tubular body for an underground structure according to any one of claims 1 to 6. 8. A cylindrical body which is vertically stacked via an adhesive, and a connection ring which is laid over a joint between the upper and lower cylindrical bodies, wherein the connection ring has an annular shape. The upper and lower end surfaces of the ring main body are provided with flexible protrusions along the circumferential direction, and this connection ring is mounted in a cylindrical recess provided along a joint between the cylindrical bodies. A cylindrical body for an underground structure, wherein the protruding part is in contact with upper and lower parts of the cylindrical body recess in a state of being laid over a joint part facing the cylindrical body concave part. 9. An upper and lower end face of the annular ring main body,
The cylindrical body for an underground structure according to claim 7 or 8, further comprising a storage portion capable of storing the projecting portion. 10. The underground structure according to claim 1, wherein a joint between the upper and lower cylindrical bodies is substantially a horizontal plane, and the annular ring body is made of a flexible material. Cylindrical body. 11. The cylindrical 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 connection ring laid over a joint portion between cylindrical bodies that are vertically stacked and that constitutes a cylindrical body for an underground structure, wherein the connection ring comprises: an annular ring main body; A ring for connecting a tubular body for an underground structure, comprising: a flexible projection provided on the annular ring main body and having a tip abutting against a wall surface of the tubular body alone. 13. The connecting ring according to claim 12, wherein the protrusion is formed as a protrusion and is provided along the entire length of the annular ring main body in the circumferential direction. 14. The projection is formed as a ridge and is provided in a plurality of lengths along the circumferential direction of the annular ring main body, and is configured to be positioned above and below a joint between the cylindrical bodies. A connecting ring for a tubular body for an underground structure according to claim 12. 15. The cylindrical structure for an underground structure according to claim 12, wherein the plurality of protrusions are formed as protrusions and are provided at intervals in a circumferential direction along a vertical direction of the annular ring main body. Ring for connecting the body. 16. The underground structure connecting ring according to claim 15, wherein the protrusions are provided so that their heights become lower as they approach upper and lower ends. 17. The underground structure connecting ring according to claim 13, wherein the ridge is formed in a pleated shape. 18. A projecting portion having flexibility along the circumferential direction is formed on each of the upper and lower end surfaces of the annular ring main body of the connection ring, and the connection ring is attached to a joint between the cylindrical bodies alone. The protruding portion is configured to be in contact with upper and lower portions of the cylindrical body concave portion when mounted on the cylindrical body concave portion provided along the joint portion and laid over the joining portion facing the cylindrical body concave portion. Item 12
18. A connection ring for connecting a cylindrical body for an underground structure according to any one of items 17 to 17. 19. A connection ring laid over a joint portion between cylindrical bodies that are vertically stacked and that constitutes a cylindrical body for an underground structure, wherein the connection ring comprises: an annular ring main body; A flexible protrusion formed along the circumferential direction on each of the upper and lower end surfaces of the annular ring main body, and the connecting ring is provided along a joint between the cylindrical bodies alone. An underground structure, wherein the protruding portion is configured to abut on upper and lower portions of the cylindrical body concave portion in a state where the protruding portion is attached to the body concave portion and straddles a joint portion facing the cylindrical body concave portion. Ring for connecting a tubular body. 20. The connection ring for an underground structure tubular body according to claim 18, wherein storage portions capable of storing the protruding portions are provided at upper and lower end surfaces of the annular ring main body. 21. The connecting ring for a tubular body for an underground structure according to claim 12, wherein the annular ring main body is made of a flexible material. 22. The connection of a cylindrical body for an underground structure according to claim 12, wherein the annular ring main body is made of a flexible material, and has a U-shaped vertical cross section. Ring.