JPH08120746A - T-box culvert and underground construction using same - Google Patents

Abstract

PURPOSE: To form a branching part of an underground construction and to quickly construct an underground construction which itself meets the functions of a box culvert and in which box culvert lines branch off, aligned underground constructions, and two lines of underground constructions. CONSTITUTION: A T-box culvert 2 is used at the branching or direction-changing part of conventional box culvert lines, to form an underground construction in which the box culvert lines branch or change direction. The projecting portions 2a of the T-box culverts 2 are butt connected together to construct aligned underground constructions. The T-box culvert lines 2 are arranged in two lines with their projecting portions 2a, 2a facing each other to construct two lines of underground constructions.

Description

Detailed Description of the Invention

[0001]

[Applications] Underground structures using box culverts such as underground reservoirs, shared reservoir ditches, and humanitarians, and box culverts used for them.

[0002]

2. Description of the Related Art Since a conventional box culvert has a rectangular parallelepiped shape, another box culvert with a special shape has to be used for connection at the branch portion of the underground structure, which is useful for constructing underground structures. There was a problem that requires a lot of labor and expense.

[0003]

[PROBLEMS TO BE SOLVED] To provide a box culvert for a branch portion which forms a branch portion of an underground structure and which itself satisfies the function of the box culvert. Promptly construct branched underground structures, parallel underground structures, and double underground structures in a box culvert row.

[0004]

[Technical Means] A T-shaped box culvert 2 is used for a branch portion and a direction changing portion of a conventional box culvert row to form an underground structure where the box culvert row is branched or turned. To construct a parallel underground structure by connecting the protruding portions 2a of the T-shaped box culverts 2 facing each other. To construct a double underground structure by forming a T-shaped box culvert 2 with two protrusions 2a, 2a thereof facing each other to form two box culvert rows.

[0005]

The T-shaped box culvert 2 forms a branch portion or a direction changing portion of the box culvert sequence. Also, T
The mold box culverts 2 are interposed in a row of parallel box culverts, and their protrusions 2a are in contact with each other to form a joint. Further, the protruding portions 2a are opposed to each other to form two rows of T-shaped box culverts to construct a double underground structure.

[0006]

[Effect] By using the T-shaped box culvert 2, the branching portion and the direction changing portion of the conventional box culvert array can be performed simultaneously with the construction. A parallel structure can be formed by facing the protrusions 2a of the T-shaped box culverts 2 interposed in the two rows of box culverts.
Further, the T-shaped box culvert 2 is provided with the protruding portion
Face each other and form two rows of T-shaped box culverts to build a double structure. As described above, the present invention has an advantage that various designs of underground structures can be applied by using the T-shaped box culvert 2.

[0007]

EXAMPLES Examples of the box culvert of the present invention and an underground structure using the box culvert of the present invention will be described below. FIG. 1 shows a conventional rectangular parallelepiped box culvert 1. FIG. 2 shows a T-shaped box culvert 2 of the present invention. 2a is a T-shaped protrusion. FIG. 3 shows a case where the T-shaped box culverts 2 are mixed in a conventional box culvert array and a branch portion is provided on one side thereof.

In FIG. 4, a T-type box culvert 2 is mixed in a row of a conventional box culvert 1 to form a branch portion, and the protruding portions 2a and 2a of the T-type box culverts 2 and 2 which are the branch portions are conventional. Located on the other side of the box culvert row. FIG. 5 shows a case where a row of conventional box culverts 1 turns at a right angle. In this case, one side 2b of the T-shaped box culvert 2 is the conventional box culvert 1
, The other side 2b is closed, and the protrusion 2a is connected to the orthogonal box culvert row.

FIG. 6 shows the case of constructing parallel underground structures. In this case, the protrusions 2a and 2a of the T-shaped box culverts 2 and 2 are opposed to each other, and the protrusions 2a and 2a are connected directly or with the conventional box culvert 1 interposed therebetween, and a branch path is provided between the parallel box culvert rows. Form.

FIG. 7 shows a case where a double underground structure is constructed. In this case, a double underground structure is formed by forming the T-shaped box culverts 2 in two rows with the protruding portion 2a inside. Thus two adjacent rows of T's
A space 3 is formed between the four T-shaped box culverts 2, 2, 2, 2 of the type box culvert array. Thus, a double underground structure having two channels or compartments can be constructed.

Next, a method of connecting the box culvert 2 of the present invention will be described. In FIGS. 8 and 9, 4 is a connecting box, 5 is a connecting rod, 5a is a buried reinforcing bar, 6 is a connecting plate, 7 is a washer, and 8 is a nut. The connecting box 4 is recessed in the intermediate portion of each box culvert 1, 2, and the box culverts 1, 4, ... By tightening the connecting boxes 4, 4 ,.
・ Is connected. FIG. 8 shows only the T-type box culvert 2.

FIGS. 10 and 11 show the connecting plate 1 in the connecting recess 9 formed in the end of each box culvert 1, 2.
The case where the box culvert 2 is connected by erected 0 and 10 and connecting them with bolts 13 and 13 is shown. 11
Is a washer and 12 is a nut. FIG. 10 shows only the T-type box culvert 2. 12 and 13 show a case where the cable 14 is laid inside the box culverts 1 and 2. Reference numeral 15 is a cable receiver, and 16 is a cable mounting post.

[Brief description of drawings]

FIG. 1 is a perspective view of a rectangular box culvert 1.

FIG. 2 is a perspective view of a T-shaped box culvert 2,

FIG. 3 is a perspective view in the case of having a halfway branch portion,

FIG. 4 is a perspective view in the case of having a branch portion in the opposite direction,

FIG. 5 is a perspective view with a right-angled branch portion;

FIG. 6 is a perspective view of a parallel underground structure,

FIG. 7 is a perspective view of two underground structures,

8 is a plan view of a T-shaped box culvert 2 using a connecting box 4, b) a view of 8b-8b in FIG. 8a, and c) a view of 8b-8b in FIG. 8a.

9) a) a vertical sectional view of the connection box 4 of FIG. 8, b) a view of 9b-9b of FIG. 9a,

10 is a plan view of the T-shaped box culvert 2 in the case of using the connecting recess 9, b) 10b-10b arrow view of FIG. 10a, c) 10c-10c arrow view of FIG. 10a,

11 a) a longitudinal sectional view of the connection recess 9 of FIG. 10, b) a plan view of FIG. 11 a

FIG. 12 is a plan view when laying a cable 15,

13 is a view taken along arrow f13-f13 of FIG.

[Explanation of symbols]

1: rectangular box culvert, 2: T-shaped box culvert, 2a: protruding part, 2b: both sides, 3: space part,
4: Connection box, 5: Connection rod, 5a: Buried rebar, 6:
Connection plate, 7: washer, 8: nut, 9: connection recess, 10: connection plate, 11: washer, 12:
Nut, 13: bolt, 14: cable, 15: cable receiver, 16: cable mounting post.

Claims (6)

[Claims] 1. A box culvert having a T-shaped planar shape. 2. An underground structure, characterized in that a rectangular parallelepiped box culvert 1 is connected to three sides of a T-shaped box culvert 2 to form a branch portion. 3. The T-shaped box culverts 2, 2 are provided with branch portions which face the opposite directions by connecting the projecting portions 2a, 2a to the opposite directions and are connected to the rectangular box culverts 2, 2. Underground structure. 4. A protrusion 2a of the T-shaped box culvert 2
Connect a rectangular box culvert 1 to the
Connect a rectangular box culvert 1 to b, and the other side 2b
An underground structure characterized by forming a right-angled direction conversion portion that closes the 5. The projections 2a, 2a of two T-shaped box culverts 2, 2 are opposed to each other, and a rectangular parallelepiped box culvert 1 is sandwiched between them, or the projections 2a are not sandwiched. , 2a are connected, and parallel box underground culverts are connected to both sides 2b, 2b of each T-shaped box culvert 2, 2 respectively. 6. A T-shaped box culvert array of two rows in which the protruding portions 2a, 2a are in contact with each other, and thus four T-shaped box culverts 2, 2, 2 of two adjacent T-shaped box culvert rows. , 2, a space portion 3 is formed between the two underground structures.