JP3505399B2 - Pipe introduction wall assembly member for underground container - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a member for assembling a wall of a portion of a buried underground container, such as a manhole or a handhole, into which a pipeline is introduced.

[0002]

2. Description of the Related Art In recent years, power cables and communication cables have been actively buried in the ground due to problems such as beautification of the cityscape. Usually, when burying a cable in the ground, a method of burying a protective conduit having a predetermined strength in the ground and pulling the cable therein is adopted. In this case, manholes and handholes are installed at appropriate intervals according to the route and distance of the pipeline, and the ends of the pipeline are connected to the walls of the manhole and handhole.

Conventionally, as means for connecting the end of the pipeline to the wall of the manhole or the like, a round or square opening is provided in the wall of the manhole or the like, and the end of the pipeline is inserted into the opening to open the opening. A method of fixing the pipeline by filling mortar, concrete, putty made of synthetic resin or the like around the pipeline inside the section is used. However, this method has the following problems. The operation of filling all the gaps between the pipe lines with mortar or the like is complicated and takes time. If the operator is not skilled, not only the finished appearance will be poor, but also the filling will be incomplete and water stoppage cannot be ensured, leading to water leakage into the manhole or handhole.

On the other hand, a block-shaped member having a predetermined number of holes for inserting pipelines is installed and fixed in an opening of a wall such as a manhole, and then the pipelines are inserted into the holes. Is also used. With this method, it is not necessary to fill mortar or the like between the pipe lines as described above, and therefore the work is simple and the problem of having to depend on the skill of the worker is solved. It

[0005]

However, the above-mentioned block-shaped member is relatively heavy, and if the number of holes is small, there is no problem, but if the number of holes is large, this block-shaped member is relatively heavy. It is necessary to arrange and stack the members in a number corresponding to the required number of holes in the field, and at the time of this work, fine position adjustment of right, left, up and down must be performed. Therefore, when the number of holes is very large, work at the site is difficult.

When a large number of block-shaped members are stacked,
Since the joints can be formed in a grid pattern between the members, the joints may serve as water and impair the water blocking performance. If the waterproofness is impaired, there is a problem that rainwater and the like contained in the soil penetrates into the manhole and the handhole through joints, and as a result, water accumulates in the manhole and the handhole. As a means for avoiding this, there is a method of coating the joint with mortar, concrete, putty made of synthetic resin, etc. to block the water supply, but with this method, the certainty of the work and the skill Will be required.

Therefore, a first object of the present invention is to introduce a pipeline into a submerged container (manhole, handhole, etc.) using a block-shaped member (pipe introduction wall assembly member) having a pipeline insertion hole. It is intended to facilitate the work of arranging and stacking the pipe introducing wall assembly members when assembling the wall. A second object of the present invention is to ensure the waterproofness of joints formed between the pipe introducing wall assembly members.

[0008]

In order to achieve the first object, the conduit introducing wall assembly member of the present invention has a rectangular parallelepiped shape or a cubic shape in which a required number of conduit insertion holes are formed in the thickness direction. The block has a convex guide on the upper surface and one side surface of the block in a direction orthogonal to the thickness direction, and the convex guide is fitted on the lower surface and the other side surface of the block in a direction orthogonal to the thickness direction. It is characterized by having a concave guide rail of such a size that it can slide.

The above-mentioned convex guide rail and concave guide rail may be one, respectively, but two or more may be provided at intervals in the thickness direction of the block. There are 2 convex guides
Even if the number of the guide rails is one or more, even if there is only one concave guide rail, if the width of the concave guide rail is such a width that all the convex guides can be put together, there is no problem because they can be fitted.

In order to achieve the above-mentioned second object, the present invention provides, in the above-mentioned conduit introducing wall assembly member, a notch portion which is circumferentially continuous around the outer surface of the conduit introducing wall. Is provided. The width of this notch is preferably 2 to 10 mm.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described in detail below with reference to the drawings. [Embodiment 1] FIG. 1 shows an embodiment of the present invention. The conduit introducing wall assembly member 1 is composed of a rectangular parallelepiped or cubic block 3 in which a required number of conduit insertion holes 2 are formed in the thickness direction (depth direction). A convex guide rail 4 is continuously formed on the upper surface 3c and one side surface 3e of the block 3 in a direction orthogonal to the thickness direction. Further, on the lower surface 3d of the block 3 and the other side surface 3f, a concave guide rail 5 having a size such that the convex guide rail 4 can be fitted and slid in a direction orthogonal to the thickness direction is continuously formed. The concave guide rail 5 has the lower surface 3d,
The other side surface 3f is provided so as to be pulled out from one end to the other end. Further, a notch 6 having a width of 2 to 10 mm and continuous in the circumferential direction is formed all around the front surface of the block 3 (the surface that becomes the outer surface side of the conduit introduction wall) 3a.

As the material forming the conduit introducing wall assembly member 1, synthetic resin such as polyethylene, polypropylene, polyvinyl chloride, concrete, ceramic or the like can be used. In particular, the duct introduction wall assembly member made of synthetic resin is lightweight, and is easy to handle when assembling the duct introduction wall. Further, the size and the number of the conduit insertion holes 2 are appropriately set depending on the size and the number of the conduits to be inserted.

When assembling the conduit introducing wall of the manhole by using the conduit introducing wall assembly member 1 as shown in FIG.
As shown in FIG. 3, the assembly members 1 are lined up and stacked in the opening 12 for forming the conduit introducing wall formed in the manhole 11. At this time, since each assembly member 1 has the convex guide rails 4 and the concave guide rails 5, the position of the assembly members 1 adjacent to each other vertically and horizontally is adjusted by fitting the convex guide rails 4 and the concave guide rails 5 together. Can be done easily. Further, when the assembly members 1 are stacked on the aligned assembly members 1, the upper assembly member 1 can be slid on the lower assembly member 1 along the convex guide rail 4 as indicated by an arrow. , The left and right fine position adjustment can be performed very easily. Therefore, it is possible to easily assemble even a conduit introduction wall having a large number of holes such as 100 holes and 200 holes. The convex guide rails 4 may be provided intermittently instead of being continuous in the circumferential direction.

The conduit introducing wall assembly member 1 is stacked so as to substantially close the opening 12 of the manhole 11 as shown in FIG. After that, as shown in FIG. 4, mortar 13 (may be concrete, synthetic resin putty, etc.) is filled in the gap between the stacked outer periphery of the assembly member 1 and the inner wall of the opening 12,
The assembly member 1 and the manhole 11 are integrated. At this time, the mortar 13 is hard to fit into the concave guide rail 5 of the assembly member 1,
Since the convex guide rails 4 of the assembly member 1 are pushed into the mortar 13, the integration between the assembly member 1 and the mortar 13 becomes stronger.

Since the pipe introducing wall assembly member 1 has the notch 6 formed in the periphery of the front surface, when the notch 6 is stacked in the opening 12 of the manhole 11 as shown in FIG. Grooves 14 are formed in a grid pattern at the boundaries between the members 1. If the width of the notch 6 is 5 mm, the width of the groove 14 is 10 mm, which is double the width. By filling the grid-shaped grooves 14 with the waterproof material 15 as shown in FIG.
It can be pressed down with, and the waterproofness of the joint will be secured.
Further, the filling work of the water blocking material 15 is simple because it only has to be pushed into the groove 14 having a predetermined size, and the filling amount can be easily managed.

Further, when the water-swellable water-stopping material which is considered to be most effective is used as the water-stopping material, the grid-like grooves 14 are very convenient. The water-swellable water-stopping material ensures water-stopping by a mechanism in which, when water enters, the molecule absorbs the water and expands to completely block the water supply. Therefore, when the joint portion is a flat surface as shown in FIG. 6B, the water-swellable water blocking material 15 is applied to the joint portion, and the water blocking material 15 is applied by the infiltration of water.
Even if swells, the waterproof material will eventually fall off from the joint portion, and the waterproof performance cannot be secured. On the other hand, when the joint is located at the bottom of the groove 14 as shown in FIG. 6 (a), the water-expandable water-stopping material 15 is suitable for being filled in the groove 14 and does not fall off even if it expands. , Groove on the contrary
The expansion in 14 surely fills the gap and further improves the waterproofness.

The width of the notch 6 is preferably in the range of 2 to 10 mm, that is, the width of the groove 14 is doubled to 4 to 20 mm. If the width of the groove 14 is less than 4 mm, a sufficient water blocking effect may not be obtained, and if it exceeds 20 mm, sufficient water blocking performance can be secured, but the amount of water blocking material used increases and workability increases. It is not preferable from the viewpoint of cost. Further, the depth of the notch portion 6, that is, the depth of the groove is set according to the expansion rate of the water-expandable water-stop material to be used. Further, the shape of the notch portion 6 is preferably a stepped shape as shown in the drawing, but it may be a concave curved surface shape.

As shown in FIGS. 4 and 5, the end portion of the conduit 16 is inserted into each conduit insertion hole 2 of the conduit introducing wall assembly member 1. Various prescriptions can be applied for stopping water between the pipe introducing wall assembly member 1 and the pipe 16 inserted into the pipe insertion hole 2, but generally, the pipe is A method of fitting a ring-shaped rubber packing (not shown) to the end of the passage 16 and inserting the portion into the conduit insertion hole 2 to ensure water shutoff is adopted. Especially when the pipe line 16 is a corrugated pipe, the rubber packing can be fitted so as to fit into the corrugated valley,
There is no risk that the rubber packing will shift in the axial direction, and it is easy to secure waterproofness.

As a stopper for inserting the conduit, a prescription such as providing a step inside the conduit insertion hole is also possible. Moreover, after inserting the pipelines 16 into all the pipeline insertion holes 2, if the front surface (outer surface side) of the pipeline introducing wall assembly member 1 is additionally hammered, a stronger pipeline introducing wall is constructed. be able to. Further, the waterproof property of the joint portion by the waterproof material 15 is also improved.

[Second Embodiment] FIG. 7 shows another embodiment of the present invention. This conduit introducing wall assembly member 1 is different from that of FIG. 1 in that the upper surface 3c of the block 3 and one side surface 3e
Two convex guide rails 4 are formed on the lower surface 3d and the other side surface 3f of the block 3 at equal intervals in the thickness direction, and two concave guide rails 4 are formed at equal intervals in the thickness direction. That is, the guide rail 5 is formed. Since the other parts are the same as those in FIG. 1, the same reference numerals are given to the same parts.

The reason why the number of the convex guide rails 4 and the number of the concave guide rails 5 are three (three or more are acceptable) is as follows. As shown in FIG. 4, mortar 13, concrete, etc. are filled in the gap formed between the opening of the manhole and the pipe introducing wall assembly member stacked in the manhole for finishing. In this case, if the conduit introducing wall assembly member 1 is made of a material having poor adhesion such as polyethylene or polypropylene, the adhesiveness with mortar or concrete is poor, and if the ground subsidence occurs, the conduit introducing wall assembly member 1 If is pulled by the conduit, the interface between the assembly member 1 and the mortar 13 or the like may be peeled off, and the assembly member 1 may fall out from the opening of the manhole. Therefore, if two or more convex guide rails 4 and concave guide rails 5 of the assembly member 1 are formed, the unevenness increases correspondingly, and not only the bonding area increases, but also the mortar and concrete are less likely to be uneven. Therefore, the adhesive force and the adhesive force can be increased.

[Third Embodiment] In the second embodiment, the number of convex guide rails 4 and concave guide rails 5 is the same, but a plurality of convex guide rails and a plurality of concave guide rails are used. It is also possible to make the rail one width so that the rails fit together. FIG. 9 shows such an embodiment. In this embodiment, the number of convex guide rails 4 is two, and the number of concave guide rails 5 is one so that the two convex guide rails 4 fit together.

[0023]

[Example] 400 mm long × 500 mm wide at the opening of the manhole
× Twelve duct line introduction wall assembly members having a thickness of 300 mm and nine duct line insertion holes with an inner diameter of 135 mm were stacked, four horizontally and three vertically as shown in FIG. The pipe introducing wall assembly member used was made of polyethylene, and the width of the convex guide rail was 30 mm. The gap between the stacked pipe assembly wall assembly member and the inner surface of the manhole opening was filled with mortar to close it. A water-expandable water-stopping material was filled in the grid-like joint portion formed by stacking the pipe-passage-introducing wall assembly members. Pipe lines (plastic corrugated pipes) having an inner diameter of 100 mm with a ring-shaped rubber packing attached at the ends were inserted into all the pipe line insertion holes of the 12 pipe line introduction wall assembly members.

The following evaluation was carried out on the pipe introducing wall thus assembled. Stacking workability: The workability when stacking the pipe introduction wall assembly member on the manhole opening was evaluated. Water stop test: The container 17 was assembled to the assembled wall for introducing the conduit as shown in FIG. 9, water pressure was applied to the container 17, and the water pressure at which water leakage started to occur was measured. In FIG. 9, reference numeral 18 is a cap that covers the outer end of the conduit 16. Workability of filling waterproof material: Workability when water-expandable waterproof material was filled or applied to the grid-like joints between the pipe introduction wall assembly members was evaluated.

Further, as shown in FIG. 10, only one pipe introduction wall assembly member 1 as described above is installed in the opening of the manhole simulation body 11M, and the surroundings of the pipe introduction wall assembly member 1 and the manhole simulation body 11M are separated. Mortar 13 was filled and solidified between the inner surface of the opening and the inner surface. The following evaluation was carried out on the conduit introducing wall thus assembled. Adhesion strength between the pipe introducing wall assembly member and the mortar: As shown in FIG. 11, a wire 19 is applied to the pipe introducing wall assembly member 1,
The wire 19 was pulled by a winch, and the tension when the conduit introducing wall assembly member 1 fell off the mortar 13 was measured.

The number of convex guide rails and concave guide rails (hereinafter abbreviated as the number of rails) and the width and depth of the front notch of the used conduit introducing wall assembly member are as follows. . [Example 1] Number of rails: 1 Notch: width 5 mm, depth 15 mm [Example 2] Number of rails: 2 Notch: width 5 mm, depth 15 mm [Example 3] Number of rails: 3 This notch: Width 5 mm, depth 15 mm [Example 4] Number of rails: 2 Notches: width 10 mm, depth 15 mm [Example 5] Number of rails: 2 Notch: width 2 mm, depth 15 mm [Comparative Example 1] Number of rails: No rail Notch: Width 5 mm, depth 15 mm [Comparative Example 2] Number of rails: 2 Notch: None [Comparative Example 3] Number of rails: 2 Notch Width: 1 mm Depth: 15 mm [Comparative Example 4] Number of rails: Two Notches: Width: 15 mm Depth: 15 mm Table 1 shows the results of evaluation by the above evaluation methods for these Examples and Comparative Examples.

[0027]

[Table 1]

Regarding the workability of stacking the assembled members, only Comparative Example 1 was evaluated as X, and other than that was evaluated as O. This is because by providing a convex guide rail and a concave guide rail,
This is because the surface alignment can be easily performed by these fittings, and the fine alignment can be easily and quickly performed by sliding the assembly member along the rail.

Regarding the water stop test, the result was that the water-swellable water stop material fell off in Comparative Example 2, but in Comparative Example 2, there was no notch on the front surface of the assembly member, and the joint was This is because the water-expandable water-stopping material applied to the flat surface is peeled off from the flat surface due to expansion. In Examples 1 to 5, sufficient waterproofness is secured,
It can be seen that the wider the width of the cutout portion, the better the waterproofness. When the width of the cutout portion was about 1 mm as in Comparative Example 3, the water blocking material did not fall off, but the water blocking ability was obtained in Examples 1 to 5.
It is significantly lower than.

Regarding the workability of filling the waterproof material, Example 1 was used.
All the samples No. 5 to No. 5 were good, but Comparative Example 2 resulted in poor workability because it was difficult to accurately apply the water blocking material along the flat joints. Further, when the width of the cutout portion was about 15 mm as in Comparative Example 4, the groove width was as large as 30 mm, so it took time to fill the water blocking material.

Regarding the adhesion strength between the assembly member and the mortar, sufficient strength was obtained in each of the Examples, but in Comparative Example 1, since the upper, lower, left and right surfaces were flat, there was no bite of the mortar and peeling at 200 kgf. It resulted. It can be seen that the provision of the convex guide rails and the concave guide rails is effective in improving the adhesion with the mortar. The effect of the notch 6 provided around the front surface of the block can be achieved without combining with a convex or concave guide rail or the like, but when combined with a guide rail,
The positioning is reliable and the joints are formed accurately,
The above effect is more exerted.

[0032]

As described above, according to the present invention, since the conduit guide wall assembly member is provided with the convex guide and the concave guide rail, the conduit guide wall assembly member is provided at the opening of the underground buried container. The work of arranging and stacking can be performed easily and efficiently. In addition, by providing notches that are continuous in the circumferential direction around the surface of the conduit introducing wall assembly member that is the outer surface side of the conduit introducing wall, when the conduit introducing wall assembly member is stacked, the groove is formed in the joint. As a result, it is possible to easily carry out the filling work of the water blocking material, and it is possible to obtain reliable water blocking without the risk of the water blocking material falling off.

[Brief description of drawings]

1A and 1B show an embodiment of a conduit introducing wall assembly member according to the present invention, where FIG. 1A is a perspective view from the front side and FIG. 1B is a perspective view from the rear side.

FIG. 2 is a perspective view showing a state in which the conduit introducing wall assembly member shown in FIG. 1 is stacked on an opening of a manhole.

FIG. 3 is a front view showing a state in which the conduit introducing wall assembly member shown in FIG. 1 is stacked on an opening of a manhole.

FIG. 4 is a front view showing a state in which a conduit introducing wall is assembled using the conduit introducing wall assembly member of FIG.

5 is a side view of the conduit introducing wall of FIG.

FIG. 6A is a cross-sectional view showing a state in which a joint portion of a conduit introducing wall assembly member having a cutout portion around the front surface is filled with a waterproof material, and FIG. 6B is a cutout portion around the front surface. Sectional drawing which shows the state which applied the water blocking material to the joint part of the pipe line introduction wall assembly member.

7A and 7B show another embodiment of the conduit introducing wall assembly member according to the present invention, where FIG. 7A is a perspective view from the front side and FIG. 7B is a perspective view from the rear side.

FIG. 8 is a cross-sectional view showing still another embodiment of the conduit introducing wall assembly member according to the present invention.

FIG. 9 is an explanatory view showing a method of a water stop test of a pipe introducing wall.

FIG. 10 is a front view showing a state in which the pipe introducing wall assembly member is fixed to the manhole simulated body by mortar for a test.

FIG. 11 is an explanatory view showing a method for testing the adhesion strength between the pipe introducing wall assembly member and the mortar.

[Explanation of symbols]

1: Pipe introduction wall assembly member 2: Pipeline insertion hole 3: Block 3a: front 3b: rear surface 3c: upper surface 3d: bottom surface 3e: One side surface 3f: the other side 4: Convex guide rail 5: Concave guide rail 6: Notch 11: Manhole 12: opening 13: Mortar 14: groove 15: Water blocking material 16: pipeline

─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-4-340309 (JP, A) JP-A-50-118533 (JP, A) Fukukaihei 4-10527 (JP, U) Utility model registration 3021542 ( (58) Fields surveyed (Int.Cl. ⁷ , DB name) H02G 9/10 E02D 29/12 H02G 1/06 311

Claims (3)

(57) [Claims] 1. A block (3) having a rectangular parallelepiped or cubic shape in which a required number of conduit insertion holes (2) are formed in the thickness direction, the block (3) has an upper surface (3c) and one side surface (3c). 3e) has a convex guide (4) in a direction orthogonal to the thickness direction, and has a lower surface (3d) and the other side surface (3f).
The convex guide in a direction perpendicular to the thickness direction (4) is fitted to have a concave guide rail (5) of dimensions that can slide, further comprising an outer surface of the conduit introduction wall surface in the (3a) Lap
Line introduction wall assembly member of underground container, characterized in Rukoto that Yusuke cutout portion continuous to the side in the circumferential direction (6). 2. A required number of pipe line insertion holes (2) are formed in the thickness direction.
From the formed rectangular parallelepiped or cubic block (3)
The upper surface (3c) of this block (3) and one of
A convex guide on the side surface (3e) in a direction orthogonal to the thickness direction
(4) having a lower surface (3d) and the other side surface (3f)
The convex guide (4) is fitted in the direction orthogonal to the thickness direction.
Fit the concave guide rail (5) that can slide together.
A ground having two or more convex guides (4) and one or more concave guide rails (5) provided at intervals in the thickness direction of the block (3). Pipe line introduction wall assembly member for medium buried containers. 3. The pipe for an underground buried container according to claim 2, further comprising a notch portion (6) circumferentially continuous around a surface (3a) which is an outer surface side of the pipe introducing wall. Road introduction wall assembly member.