JPS6322215Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The invention is used for culverts and underground waterways, and is easy to manufacture and use.
This relates to a box culvert that is easy to transport and install.

[Prior art and its problems]

Traditionally, culverts have been widely used in civil engineering works for underground piping, cable passages, waterways, and other routes. In addition to constructing this culvert using concrete poured on site, recently, this culvert has been manufactured in a factory as one piece with a certain length.
A method of installing this on-site has been adopted. It is relatively easy to integrate a culvert in a factory, and it is advantageous in that sufficient quality can be maintained, but depending on the purpose, the width and height of the culvert may be several meters. However, if such culverts are manufactured all at once in a factory, the cost of the formwork increases, and furthermore, there are problems with transportation and installation.
In addition, if the parts were to be divided and produced in a factory, the number of types of formwork would increase, the installation method would be complicated, and there would be problems in maintaining the strength of the joints, which was not desirable in terms of quality.

[Purpose of invention]

The purpose of this invention was to solve the above problems, and by making the culvert an assembly structure that can be connected from the inside at the corner, it facilitates factory production, transportation, and installation. The present invention provides a box culvert that can maintain sufficient quality.

[Structure of the idea]

This invention has a predetermined length and is manufactured with a rectangular cross section, and in a culvert that is connected in series and buried, the rectangle is divided at four diagonal corners and connected in series. By forming the opposing side end surfaces of the culvert with concave and convex surfaces that fit into each other, and by attaching connecting hardware that can be fastened from inside the culvert to the diagonal surfaces of the corners and the opposing sides of the side end surfaces, prefabrication and transportation in the factory are possible. This is a box culvert that is easy to install and maintains sufficient strength after installation.

〔Example〕

An example of this invention will be explained with reference to the drawings.
Fig. 1 is a front view of the culvert 1, and Fig. 2 is a side view thereof. In this embodiment, the culvert has a box-shaped concrete structure with a square cross section, and the front end face 2 has a side end face. A convex surface 4 is formed over the entire circumference, and a concave surface 5 is formed on the rear end surface 3 over the entire circumference of the side end surface, and the convex surface 4 and concave surface 5 of the culvert installed adjacent to each other are fitted and joined. ,
A continuous culvert is constructed. culvert 1
is composed of four face members: a top face member 6, left and right side members 7, 8, and a bottom face member 9, and diagonal faces 10a, 10b, 10 forming radial shapes at four corners of the square cross section.
It is possible to divide by c and 10d. Each diagonal 10
a, 10b, 10c, and 10d have a circular groove 11 near the center of the diagonal surface over the entire length of the culvert 1.
A, 11b, 11c, and 11d are cut into the circular grooves 11a, 11b, 11c, and 11d, and circular packing made of rubber, for example, is tightly attached to keep the culvert 1 watertight or airtight.

On the inner surface of the culvert 1 on each diagonal surface 10a, 10b, 10c, 10d, a plurality of connecting hardware 1 are provided at predetermined intervals in the longitudinal direction of the culvert 1.
2a, 12b, 13a, 13b, 14a, 14
b, 15a, and 15b are buried so that they can be fastened from the inner surface of the culvert 1. Figure 3 shows diagonal plane 1
FIG. 4 is a partial cross-sectional view illustrating the details of the attachment of the connecting hardware on the diagonal surface 10b, and FIG. 4 is a front view showing the arrangement of the connecting hardware 13b on the diagonal surface 10b.
The connecting hardware 13a and 13b are each made in the shape of a steel box, and the inner surface of the culvert 1 is open and buried in the respective face members 6 and 8, and further anchors 1 are installed for reinforcement.
6a and 16b are attached. Connecting hardware 13a, 13 on the side where each face material 6, 8 touches on the diagonal surface 10b
Mutually penetrating bolt holes 17 are bored in the surface b, and the face members 6 and 8 are fastened together with bolts 18 and nuts 19. Similarly, other connecting hardware 12a, 12b, 14a, 14
b, 15a, 15b are also diagonal surfaces 10a, 10c, 1
It is buried in each of the face materials 6, 7, 8, and 9 at 0d.

A plurality of connecting metal fittings 2 are installed at predetermined intervals on the front side end face 2 and back side end face 3 of the culvert 1 with respect to the adjacent culverts, respectively, over the circumference of the side end faces.
0a...20h and 21a...21h are buried so that they can be fastened from the inner surface of the culvert 1. FIG. 5 is a partial cross-sectional view illustrating details of the attachment of the connecting hardware 20a (or 20b) on the front end surface 2 of the culvert 1, and 6' is the upper surface member of the culvert 1' installed adjacent to it; The structure of the side end surface 3' is the same as that of the back side end surface 3 of the culvert 1, and the convex surface 4 of the culvert 1 and the concave surface 5' of the culvert 1' fit together, and the culverts 1 and 1' are joined. The connecting hardware 20a, 20a' is a diagonal connecting hardware, for example, the same structure as the connecting hardware 13a, and is made in the shape of a steel box.
The inner surfaces of the holes are opened, and the holes are respectively buried in the face material and reinforced and fixed with anchors 22 and 22'. Connecting hardware 21a, 21 on the side where the culverts 1, 1' face each other
Mutually penetrating bolt holes 23 are bored in the surface a', and the culverts 1 and 1' are fastened together by bolts 24 and nuts 25. Similarly, other connecting hardware 20c...20h, 21a...21
h are also buried in the front end surface 2 and back end surface 3 of the culvert 1, respectively.

The mounting positions of the connecting hardware on the diagonal surface and the connecting hardware on the side end faces are the same cross-sectional position of each side material 6, 7, 8, and 9 on any of the diagonal surfaces 10a, 10b, 10e, and 10d. It is mounted on the side end surface at a diagonal or symmetrical position with respect to the center line of the top, bottom, left and right,
Therefore, in the case of a device having a square cross section as in this embodiment, the top surface material 6, left and right side materials 7, 8, and bottom surface material 9 all have the same shape, and therefore, each surface material is compatible. In addition, in the case of a rectangular cross section, the top surface material 6, the bottom surface material 9, and the left and right side surface materials 7
and 8 have the same shape and are compatible with each other.

[Effect]

The present invention is constructed as described above, and when assembling this culvert 1, first install the bottom material 9 in a predetermined position, then assemble the left and right side materials 7 and 8, and fasten the diagonal surfaces 10c and 10d from the inside. Finally, the upper surface material 6 is placed, and the diagonal surfaces 10a and 10b are fastened from the inside to complete the culvert 1. Next, the bottom, left and right side members, and top members of the adjacent culverts are attached, and the front and back end faces are fastened, and the culverts are fastened one after another, completing a continuous culvert route.

In addition, as a second installation method, the bottom material of the culvert of the line, 9, 9',
9″... were installed in succession, and the bottom of the line was completed by tightening them, and then the left and right side members 7,
It is also possible to construct a culvert by sequentially assembling 8, 7', 8', etc., and finally placing and fastening the top members 6, 6', 6'', etc. in succession.

Furthermore, a large number of single culverts 1 are assembled in advance from the bottom material 9, right and left side materials 7, 8, and top material 6 near the installation location, and the assembled culverts 1 are sequentially arranged at the installation location. You can also connect and conclude the route.

Also, due to installation work, there may be cases where an entrance for work or an entrance for carrying in and out of equipment is required in the middle of the culvert route. Materials 7 and 8 can be removed temporarily, and once the construction is completed, the removed surface materials can be restored from the outside, and they can be fastened from the inside to complete the culvert, making the work more convenient. .

〔effect〕

As explained above, in the present invention, the box-shaped corner 4
Since the sections are divided along diagonal planes that form a radial pattern, the facing materials that make up the culvert can be manufactured in the same shape, increasing the compatibility of the facing materials.
Therefore, factory manufacturing is easy and inexpensive, and at the same time transportation and installation are extremely easy. Also,
During assembly, the structure allows for fastening of each face member from inside the culvert, so work can be done safely and reliably inside the culvert. In addition, a simple structure is used for each joint surface, so a wide range of assembly methods can be adopted depending on the construction method and site conditions. Furthermore, because the culvert's dividing points are located at the thick corners of the structural members, each face member can be fastened while maintaining a wide contact area, and not only the bolts and nuts for fastening, but also the contact Since the load is also shared between the surfaces, the structure becomes strong against external loads and maintains sufficient quality in terms of strength.

[Brief explanation of the drawing]

Fig. 1 is a front view of the culvert of the example, Fig. 2 is a side view of Fig. 1, Fig. 3 is a partial sectional view of the diagonal surface of Fig. 1, and Fig. 4 is a diagonal connection hardware. A front view showing the arrangement, and FIG. 5 is a partial sectional view of the side end face of the culvert. 1, 1'... Culvert, 2, 3, 3'... Side end surface, 4... Convex surface, 5, 5'... Concave surface, 6, 6'...
Top material, 7, 8... Side material, 9... Bottom material, 10
a, 10b, 10c, 10d...diagonal surface, 11
a, 11b, 11c, 11d...circular groove, 12
a, 12b...15a, 15b...Diagonal connecting hardware, 16a, 16b, 22, 22'...Anchor,
17, 23... Bolt hole, 18, 24... Bolt, 19, 25... Nut, 20a, 20b... 2
0h, 21a, 21b...21h, 21a'...Connection metal fittings on side end surfaces.

Claims (1)

[Scope of utility model registration request] In a culvert that has a predetermined length and a rectangular cross section and is connected in series and buried, it is divided at four diagonal planes at the corners of the rectangle and the relative of the culvert is connected in series. A box culvert, in which the side end surfaces of the box culvert are formed of concave and convex surfaces that fit into each other, and connecting metal fittings that can be fastened from inside the culvert are attached to diagonal surfaces of the corners and opposing surfaces of the side end surfaces.