JPH0342095Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a waterway shoulder related to waterway construction technology, and aims to provide a secondary waterway shoulder product that prevents scour on both sides of various waterway grooves.

Conventionally, when constructing a waterway or side ditch connecting U-shaped waterway blocks, tension concrete is constructed in order to better transfer precipitation from the mountainside to the waterway groove.
Backfill soil b such as gravel or sand is laid at the bottom of the waterway block c, which has a U-shaped cross section.
After placing and connecting them to form a waterway, the side gaps of the waterway block c are filled with earth and sand, and concrete is poured laterally from the upper edge of the waterway block c to form a stretched concrete d.

However, the tension concrete d is the waterway block c
In addition, due to the expansion and contraction of the tensile concrete d, cracks may occur in a part of the continuously formed tensile concrete d, and cracks may occur in the tensile concrete d itself, especially at the boundary with the waterway block c. There was a drawback that the stretched concrete d could easily peel off from the boundary. As a result, water infiltrates through the peeled boundaries of the stretched concrete d and cracks in the stretched concrete d, and washes away the earth and sand on the underside of the stretched concrete d and the backfilling soil b, etc., resulting in a part of the stretched concrete d falling down, and further There was a problem that waterway block C itself would sink.

In particular, when construction is carried out on soil that is susceptible to washing away, such as whitebait or mullet, or in places such as steep slopes, where the backfill soil cannot be sufficiently compacted, the above phenomenon is noticeable, causing detachment of the stretched concrete and subsidence of the water channel.

In addition, with conventional construction methods, when the slope becomes steep, it takes a lot of time and effort to transport and place the concrete, and since it is done on-site, it is difficult to achieve a uniform finish, and sometimes the dimensional strength cannot be achieved as designed. There were problems such as parts forming.

In view of the above-mentioned problems, the present invention was devised to provide a waterway shoulder that can easily and reliably prevent scouring of the shoulder of a waterway groove, and has sufficient durability for long-term use. It is an object of the present invention to provide a waterway shoulder which is placed underground by hooking one end to the upper end of the waterway, and which is connected in the direction of the waterway groove.

An embodiment of the waterway shoulder of the present invention will be described below with reference to FIGS. 2 to 7. FIG. 2 is a perspective view of the waterway shoulder. The waterway shoulder 1 is a plate-shaped body made of concrete or synthetic resin with a rectangular plane having a desired width (approximately 30 cm to 40 cm) and length (approximately 50 cm to 70 cm). As shown in FIGS. 3 to 5, the strength of the waterway shoulder 1 can be maintained by embedding several reinforcing bars 2 vertically and horizontally in the surface direction.

Fitting connection structures 3, 3 are formed at both ends of the waterway shoulder 1, and one fitting connection structure 3 is provided at both ends of the waterway shoulder 1.
This becomes a protrusion 5 protruding from the end face 4, and a stepped portion 6 is formed on the upper surface side continuous with the protrusion 5, which is set back by W from the end face 4, as shown in FIG. In addition, the other fitting connection structure 3 is formed with a groove 8 on the end face 7 into which the protrusion 5 is fitted, and the bottom surface of one side of the waterway shoulder 1 is sloped so that the tip becomes thinner, as shown in FIG. This constitutes the engagement step portion 9.

As shown in Fig. 6, the waterway shoulder 1 having the above structure is constructed by backfilling earth and sand b at the bottom of the ground excavation a, and then placing a waterway block c having a U-shaped cross section, and filling the side gap with earth and sand. After backfilling and tamping,
The engaging step portion 9 is engaged with the upper edge of the water channel block c and laid down, and the water channel shoulder 1 is inclined downward toward the water channel groove side.

When the fitting connection structure of the waterway shoulders 1, 1 is connected in the waterway groove direction along the waterway block c, the protrusion 5 is fitted into the groove 8 as shown in FIG. hits and there is a stepped part 6 on the top side.
A joint groove 10 having a width W depending on the end surface 7 is formed. Therefore, by filling the joint groove 10 with mortar 11 or the like, a continuous structure that does not get wet can be achieved.

The waterway shoulder 1 of the present invention is installed underground on both shoulders of the waterway block c as described above, but when used in a side gutter or the like, it can also be installed underground on only one shoulder. In addition, although the case where it is used for the channel groove formed by the channel block was explained in the Example, the invention of this application is not limited to this,
For example, it can be applied to the shoulders of various waterway grooves, as well as waterway grooves formed by building forms on site and pouring concrete into them. Moreover, the width, thickness, and length of the waterway shoulder are not limited to the embodiments, but can be adapted to the size of the shoulder to be protected in the waterway groove to which the waterway shoulder is applied.

As explained above, since the waterway shoulder of the present invention is a secondary product that is transported to the site and assembled, it can be constructed more uniformly than stretched concrete.

In addition, since it is a suspended type underground installation, there is no risk of subsidence, cracking, or peeling, eliminating the need for post-construction modifications, and because the shoulder can be installed simultaneously with the canal installation, the construction period can be shortened. It has excellent features such as being able to be constructed relatively easily, especially on sloped areas, and the practical effects after implementation of the present invention are extremely large.

[Brief explanation of the drawing]

Figure 1 is a vertical cross-sectional view of a waterway groove constructed with conventional stretched concrete, Figure 2 is an exploded perspective view of the waterway shoulder of the present invention, Figure 3 is a plan view of the same, and Figure 4 is A-A in Figure 3. 5 is a sectional view taken along the line B-B in FIG. 3, FIG. 6 is a vertical sectional view of the water channel showing the construction state, and FIG. 7 is an enlarged sectional view of the main parts showing the fitting connection structure. be. DESCRIPTION OF SYMBOLS 1... Channel shoulder, 2... Reinforcing bar, 3... Fitting connection structure, 5... Projection, 6... Step part, 8... Groove, 9... Engagement step part, 10... Joint groove , 11...
Mortar, c... waterway block, d... stretched concrete.

Claims (1)

[Scope of claims for utility model registration] (1) Consisting of a flat plate of concrete or synthetic resin;
An engaging stepped portion extending in the longitudinal direction is formed on the lower surface of one side, and the engaging stepped portion is hung on the upper edge of the shoulder of the water channel groove so that it can be used in conjunction with the water channel groove. A waterway shoulder characterized by: (2) Utility model registration claim 1, characterized in that the engaging stepped portion is formed to become thinner toward the end, so that the waterway shoulder is inclined downward in the direction of the waterway groove when laid down. Waterway shoulder mentioned. (3) The waterway shoulder according to claim 1 or 2, wherein the flat plate has a plurality of reinforcing bars embedded vertically and horizontally in the surface direction. (4) A utility model according to claim 1, characterized in that fitting connection structures are formed at both ends in the longitudinal direction so that adjacent waterway shoulders can be fitted and connected to each other. waterway shoulder. (5) Utility model registration claim 4, characterized in that the fitting connection structure consists of a protrusion protruding from one end of the waterway shoulder and a groove protruding from the other end.
Waterway shoulder as described in section. (6) The waterway shoulder according to claim 4, wherein the fitting connection structure is capable of forming a groove on the upper surface side when the fitting connection structure is fitted.