JP2618215B2 - Construction method of slope ditch and concrete block used for it - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for constructing a sloping gutter which can freely set the slope of a gutter bottom irrespective of the slope of a road, and which can also contribute to reinforcing reinforcement of a road shoulder and the like. It relates to a concrete block.

[0002]

2. Description of the Related Art Conventionally, a waterway gutter such as a road gutter has a U-shaped cross-section gutter block arranged side by side on the road.
After that, a method has been developed and practiced in which a gutter block having a shape in which the bottom of the gutter is opened is juxtaposed, and concrete is placed on the open bottom in accordance with the gradient of the water channel.

[0003]

In the conventional method of forming a slope gutter, when a gutter block having a U-shaped cross section is used, the depth of the recess forming the gutter is the same for blocks having the same width. For this reason, the waterway gradient was restricted by the top of the gutter and the road gradient, and the road gradient and the waterway gradient had to be the same.

[0004] For this reason, it is difficult to increase the speed of the water flow, and there is a problem that drainage is apt to occur, and there is also an inconvenience that it is impossible to drain the water in a direction opposite to the slope of the road.

[0005] This problem has been solved by adopting a gutter block having an open bottom groove, but the gutter block having an open bottom groove has a problem that the structure of the installation base is unstable and fragile. At present, the load on the road reaches 25 tons, and it is impossible to cope with the lateral pressure.

[0006]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and has a base portion that expands downward,
On the upper surface of a concrete block provided with a fitting protrusion on one side and a recess fitted on the other side with a fitting protrusion of an adjacent block, a concave portion having a depth corresponding to a gradient of a channel forming a gutter was formed. The concrete block is fitted to and arranged in parallel with the target ground in accordance with the waterway gradient, and the bottom of the gutter recess is adjusted by casting concrete in accordance with the waterway gradient.

Further, the structure of the foundation is such that the front side is a vertical surface,
The rear side is inclined and the trapezoidal section is formed with a pressure-resistant strength as a retaining wall.The side pressure load on the road side is released by the inclined surface, and the vertical surface on the front side is exposed as a retaining wall that solidifies the road shoulder. And, if necessary, it can be configured as a decorative surface with embedded iron flat stone or natural stone.

When the pressure resistance is not so high, if the overhanging base is provided at the lower portion on the back side of the main body provided with the side groove recess, the weight of the block can be considerably reduced, and the overhanging base can be reduced. Thus, stability can be ensured.

Further, if the fitting portions provided on the side surfaces of the main body are formed into a trapezoidal convex protrusion which is expanded downward and a concave portion which fits with the trapezoidal protrusion, the upper part of the convex protrusion of the installed block can be used. If the recesses of the adjacent blocks are dropped and fitted so as to fit together, the blocks can be arranged neatly without any need for positioning.

[0010]

[Function] The concrete block is composed of a retaining wall as a whole, and a gutter recess is formed on the upper surface thereof. A block having a step in the depth of the recess is formed in advance, and the concrete block is inclined in a gradient direction. If the recesses are arranged in parallel from shallow to deep, the waterway gradient can be provided in the direction opposite to the road gradient.

In addition, the side walls are strengthened by the retaining wall by arranging the blocks formed on the retaining wall so as to expand downward, and can cope with road side pressure in which a straight wheel load reaches 25 tons. It is.

Furthermore, since the front side is formed as a vertical wall, it is possible to decorate the exposed vertical wall without embankment, avoid dull concrete walls, and contribute to the setting of a gutter with an aesthetic appearance. Can be done.

[0013]

Embodiments of the present invention will be described below with reference to the drawings. Reference numeral 1 denotes a gutter block main body, and a base portion 2 which is expanded downward.
The fitting protrusion 3 is provided on one side, and the fitting recess 4 is provided on the other side to fit the fitting protrusion 3 of the adjacent block.

The base portion 2 may be formed into a vertical surface 21 on the front side and an inclined surface 22 on the back side to have a trapezoidal cross section, or may be extended to the lower portion on the back side of the main body 1 as shown in FIG. Is formed on the upper surface of the block main body 1, and a side groove concave portion 5 having a depth corresponding to a gradient of a water channel forming the side groove is formed.

The groove 5 is formed such that the depth of the groove is formed to be deeper than the depth of the groove, so that a water channel gradient is formed by concrete casting at the site. Several types are prepared with standardized and stepped depths, and it is also possible to pre-form the necessary structures for the retaining wall such as drain holes.

The construction of the retaining wall using the concrete block according to the present invention will be described. First, a foundation hole for solidifying the retaining wall is excavated in the construction site G, and rubble stone and crushed stone are laid to crush and level the ground.

The block A according to the present invention is located on the construction site G
While the fitting projections 3 and the fitting recesses 4 of the adjacent block A2 are fitted to each other, they are sequentially arranged in parallel in the gradient direction from shallow to deep recesses.

The blocks between the parallel blocks A, A2, A3,... Are clogged, and the bottom of the gutter recess is adjusted by casting concrete in conformity with the gradient of the water channel and backfilled to hold the gutter with the gutter. Creates a wall.

[0019]

Since the present invention is constructed as described above, concrete blocks produced in factories and the like can be installed side by side in the leveled foundation holes, and the waterway gradient can be freely provided regardless of the road gradient. A gutter with an extremely strong concrete retaining wall could be created.

[0020]

[Brief description of the drawings]

FIG. 1 is a perspective view showing a concrete block according to an embodiment of the present invention.

FIG. 2 is a perspective view showing a concrete block according to another embodiment different from FIG. 1;

FIG. 3 is a cross-sectional view showing the relationship between a guttered road and a gutter block;

FIG. 4 is a longitudinal sectional side view showing a state in which the bottom of the gutter concave portion is adjusted by casting concrete in conformity with the gradient of the water channel.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Block main body 2 Base part 21 Vertical surface 22 Inclined surface 23 Base body 3 Fitting protrusion 4 Fitting recessed part 5 Groove recessed part 6 Cover placing part 7 Casting concrete A, A2, A3 Parallel concrete block B Road G Creation Site H fill

Claims (5)

(57) [Claims] An upper surface of a concrete block having a base portion expanded downward and having a fitting projection on one side and a fitting recess fitted on a fitting projection of an adjacent block on the other side. A concrete block formed with a gutter recess with a depth that matches the slope of the water channel that forms the gutter is fitted in parallel to the target ground in accordance with the slope of the water channel, and concrete is cast with the bottom of the recess of the gutter corresponding to the slope of the water channel. Construction method of slope ditch characterized by adjustment by 2. A concrete block having a base part expanded downward and having a fitting projection on one side and a fitting recess fitted on a fitting projection of an adjacent block on the other side. , Concrete block with a gutter recess formed at a depth that matches the slope of the waterway that forms the gutter 3. The concrete block according to claim 2, wherein the front side has a vertical surface and the rear side has an inclined surface, and has a trapezoidal cross section. 4. The concrete block according to claim 2, wherein an overhanging foundation is provided at a lower portion on the back side of the main body having the groove. 5. The concrete block according to claim 2, wherein a fitting portion provided on each side surface of the main body is formed into a trapezoidal fitting projection in which a fitting portion is expanded downward, and a fitting concave portion fitted with the fitting protrusion.