JP2911095B2 - Box culvert - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a box culvert and, more particularly, to a structure suitable for lining a waterproof material at a connection portion at an end of the box culvert.

[0002]

2. Description of the Related Art Conventionally, a connecting portion of a box culvert is waterproofed by lining a waterproof material. It is preferable to perform the lining construction of the connection part of this box culvert on the outer peripheral surface from the viewpoint of workability, but lining can not be performed on the outer peripheral surface of the bottom part, and because the period from construction to backfilling is short, etc. Recently, a method of lining a waterproof material from the inside of the connection portion of the box culvert to the concave step formed at the joining end of the end surface of the box culvert has been widely adopted.

The conventional box culvert is shown in FIG.
As shown in FIGS. 13 to 13, concave grooves 4 and 5 are formed on one end face of the box culvert body 1 so that the joint packings 2 and 3 are fitted inside and outside. Further, one end face of the box culvert body 1 is formed. Has a structure in which a concave step portion 6 is formed on the inner peripheral edge portion. Then, the box culvert body 1 is connected to the concave grooves 4 and 5 with the joint packings 2 and 3 fitted thereto, and the caulking material 7 is filled into the concave step 6 at the inner peripheral edge of the box culvert body 1. The caulking material 8 is lined on the periphery with the concave step 6 interposed therebetween.

[0004]

However, it is difficult to prevent intrusion of water from the outside of the connection portion of the box culvert body by the above-described conventional method of lining the inside concave step portion of the connection portion of the box culvert body. There is a problem that is.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a box culvert which can easily and surely waterproof a connection portion of a box culvert body and has improved waterproofness. I do.

[0006]

According to a first aspect of the present invention, a box culvert according to the first aspect of the present invention is provided with a vertical groove for injecting a waterproof material at both sides of at least one joint end face of the box culvert body and a bottom portion at the bottom. both side edges to form a waterproof material injection transverse groove which communicates with the said waterproof material injection longitudinal groove, communicating with the waterproof material charging longitudinal groove in the upper edge of the end portion of the box culvert body recessed step Forming the bock
A lateral groove with a waterproof material injected near the outer end of the bottom of the sculvert body
Is formed with a waterproof material management hole communicating with .

[0007]

The box culvert according to the first aspect of the present invention is
When the joining end faces of the box culvert body are aligned with each other , the waterproofing material injecting longitudinal direction in which both sides are communicated with an injecting hole formed by a vertical waterproof material injecting longitudinal groove on both sides of the joining end face and a bottom. and the injection hole which is formed in the groove communicated may waterproofing to the bottom by injecting a waterproof material from the longitudinal direction of the injection hole. Also, the upper portion can be waterproofed by filling the concave step formed on the upper edge with a waterproof material.

Further, a waterproof material is provided in the vicinity of the outer end of the bottom of the connecting portion of the box culvert body so as to communicate with the waterproof material-injected lateral groove.
With the material management hole, it can be confirmed that the waterproof material after the injection has spread to the bottom, and the waterproof quality is improved.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The configuration of an embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a front view of a box culvert. As shown in FIGS. 2 to 4, a box culvert body 11 has both side surfaces 11a, 11a, an upper surface 11b and a bottom portion 11c, and both end surfaces are opened. On both side surfaces 11a, 11a of one joint end surface 12 of this box culvert body 11, vertical waterproof material injection vertical grooves 13 are formed, respectively, and both end portions are formed on the bottom portion 11c with the waterproof material injection vertical grooves 13 respectively. , 13 are formed on the outer edge of the upper surface 11b, and a recessed step portion 14a is formed on the outer edge of the upper surface 11b.

[0011] Further, the outer surface of the waterproof material-injected vertical groove 13 and the waterproof material-injected lateral groove 14 is continuous with one of the joint end surfaces 12 of the two side surfaces 11a, 11a of the box culvert body 11 and the bottom portion 11c. A packing fitting groove 15 is formed in a substantially U-shape that is open at both upper ends. The box culvert body 11 is located inside the waterproof material-injecting vertical groove 13 and the waterproof material-injecting lateral groove 14 and has a joint end surface 12 with one of the side surfaces 11a, 11a, the upper surface 11b, and the bottom portion 11c. A substantially annular packing fitting groove 16 is formed continuously.

Further, a notch recessed step 17 for caulking filling is formed in a substantially annular shape on the inner edges of both side faces 11a, 11a of one joint end face 12 of the box culvert body 11 and one joint end face 12 of the bottom part 11c. Have been.

Further, a plurality of waterproof material management holes 18 are formed in the vicinity of one of the joint end surfaces 12 of the box culvert body 11 and communicate with the waterproof material injection lateral groove 14 from the inner peripheral side of the bottom portion 11c. Have been.

Next, the operation of this embodiment will be described.

One joint end face of the box culvert body 11
12 and the other joint end face of the box culvert body 11 adjacent to
19 into the packing grooves 15 and 16, respectively.
Joined with 21 fitted, box culvert body 11,
The caulking material 22 is injected into the substantially U-shaped space having both ends opened upward by the waterproof material injection vertical grooves 13 and 13 and the waterproof material injection horizontal grooves 14 in the joint end surfaces 12 and 19 of FIG.

The caulking material 22 injected from the upper end opening portions of the waterproofing material-injected vertical grooves 13, 13 is filled in the waterproofing material-injecting vertical grooves 13, 13 and the waterproofing material-injecting lateral groove 14. When filling of 22 is performed, caulking material is inserted into the waterproof material management hole 18.
22 flows into the caulking material 22 and the box culvert 1
It can be confirmed that the end faces 1 and 11 are filled. Then, the notch concave step 17 for caulking filling at the bottom 11c and the top
The caulking material 22 is filled in the concave step portion 14a of 11b.

Next, another embodiment will be described with reference to FIGS.

In this embodiment, the box culvert 11
Forming a convex step 31 on the inner peripheral side of one of the joining end faces 12 and forming a convex step 32 on the outer peripheral side of the other joining end face 19,
In a state where one joint end face 12 and the other joint end face 19 of the adjacent box culvert body 11 are joined by the convex steps 31 and 32 , a concave portion formed by the convex steps 31 and 32
As shown in FIG. 7, the grooves 11a, 11a are provided with a waterproof material.
13, 13 are formed, and the bottom 11 is formed as shown in FIG.
c, the both ends are communicated with the waterproof material-injected longitudinal grooves 13
Further, a lateral groove 14 for injecting a waterproof material is formed.

The waterproof material management hole 18 is formed as shown in FIG.
A, located in the vicinity of the joining end face 12 of the hand of the box culvert body 11, are formed at a plurality of locations from the inner peripheral side of the bottom portion 11c, communicates with the waterproof material injection lateral groove 14.

Furthermore, the packing fitting Chaku凹 grooves 15 and 16, FIG. 6
As shown in the other direction the waterproof material injection longitudinal grooves 13, 13 waterproofing material charging lateral grooves in the joint end face 19 of the box culvert 11
14 and are provided.

Furthermore, a notch concave step for caulking filling is formed on the inner edge of the other joint end face 19 of the box culvert body 11.
17 are formed. Further, the waterproof material-injected vertical groove is provided on the other joint end face 19 of the upper surface 11b of the box culvert body 11.
Recessed steps 14a are formed at the ends 13 and 13 so as to communicate with each other.

Next, the operation of this embodiment will be described.

By joining the box culvert bodies 11, 11, the waterproof material-injected vertical grooves 13, 13 are formed by the convex steps 31, 32.
13 and the lateral groove 14 for injecting the waterproof material are formed so as to communicate with each other.
The caulking material 22 is filled from the upper end openings of the vertical grooves 13, 13 a, and the concave step portions on the upper surface 11 b.
14a is filled with a caulking material 22. Then, the filling state of the caulking material 22 is confirmed in the waterproof material management hole 18. Further, a caulking material 22 is filled in the notched concave step 17 of the bottom 11c.

[0024]

According to the first aspect of the present invention, the vertical groove for injecting the waterproof material and the horizontal groove for injecting the waterproof material are formed on both sides of the joint end face of the box culvert body, respectively. By injecting waterproofing caulking from the upper end opening of the vertical groove, the joint at the end face of the box culvert body can be reliably waterproofed, intrusion on the outside can be reliably prevented, and construction is easy. The waterproof property of the end face joint can be improved. In addition, box culverts body
The filling state of the caulking material can be reliably confirmed by the waterproof material management hole formed so as to communicate with the waterproof material-injecting lateral groove at the bottom.

[Brief description of the drawings]

FIG. 1 is a front view of a box culvert showing one embodiment of the present invention.

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

FIG. 3 is a sectional view taken along the line BB of FIG. 1;

FIG. 4 is a sectional view taken along the line CC of FIG. 1;

FIG. 5 is a front view of a box culvert showing another embodiment of the present invention.

FIG. 6 is a rear view of the same.

FIG. 7 is a sectional view taken along line AA of FIG. 6;

FIG. 8 is a sectional view taken along line BB of FIG. 6;

FIG. 9 is a cross-sectional view taken along the line CC of FIG. 6;

FIG. 10 is a front view of a conventional box culvert.

FIG. 11 is a sectional view taken along line AA of FIG. 10;

FIG. 12 is a sectional view taken along line BB of FIG. 10;

FIG. 13 is a sectional view taken along the line CC of FIG. 10;

[Explanation of symbols]

 11 Box culvert body 12, 19 Joint end face 13 Vertical groove with waterproofing material 14 Horizontal groove with waterproofing material 14a Recessed step 18 Waterproof material management hole

──────────────────────────────────────────────────続 き Continuing from the front page (72) Inventor Junya Fukumuro 5--19-35 Chitosedai, Setagaya-ku, Tokyo (72) Inventor Shuji Matsumoto 822-2, Nitta-cho, Nitta-cho, Nitta-gun, Gunma Prefecture Tokyo Electric Power Company Stock Company (Transmission) Substation Nitta Construction Office (72) Inventor Hiroyasu Iihara 4-33, Shibaura, Minato-ku, Tokyo Co., Ltd. Sekidenko Co., Ltd. (56) References Real Opening Sho 54-89120 (JP, U) (58) Field surveyed (Int. Cl. ⁶ , DB name) E03F 3/04

Claims (1)

(57) [Claims] 1. A vertical groove for injecting a waterproof material is formed on both sides of at least one joint end face of a box culvert body, and both ends are communicated with the groove for injecting a waterproof material at the bottom. forming a waterproof material injection transverse groove, said box culvert body concave stepped portion communicating with the waterproof material charging longitudinal groove in the upper edge of the end portion is formed of the outer end side near the bottom of the box culvert body Waterproof material
A box culvert characterized by forming a waterproof material management hole communicating with the lateral injection groove .