JPH0237013Y2 - - Google Patents

Description

[Detailed explanation of the invention] A. Purpose of the invention (a) Industrial application field This invention relates to concrete secondary products of humid pipes suitable for road side ditches, road crossing ditches, various yard drainage ditches, water receiving ditches, etc. be.

B. Conventional technology and its problems No. 1 - Status of conventional technology (example of drainage mechanism) (a) Road gutter 1 Gutter with grating and (ordinary concrete pipe,
Huyum tube, etc.) combination.

2 Combination of a grating-equipped box and pipe in an L-shaped dish groove, etc.

3 Combination of U or V-shaped trough and lid or grating.

4 Combination of box and grating or box with grating.

(b) Road crossing ditch 1 U, V-shaped trough and grating 2 Boxes and gratings (c) Various on-site drainage ditches Same as road gutter in paragraph (a) above.

Problems with the 2nd - conventional technology (a) Problems due to lack of drainage outlets (number of locations, size) (poor drainage) 1 When using grating-equipped basins as drainage outlets, the spacing between the basins is determined by topography, planned drainage volume, etc. but,
Changes in decision conditions, freezing damage in snowy and cold regions, and snow damage can increase or impede the flow of water to the drainage outlet, causing puddles of water to reach the center of the roadway, causing a nuisance to pedestrians and hindering vehicle travel. Put it away. but,
It is thought that it is often difficult to extremely narrow the spacing between the pits due to topography, location, structure, and construction costs.

2 If the gap in the lid of a U- or V-shaped trough (containment opening) is used as a drainage outlet, as in the previous item, drainage problems (water puddles) are likely to occur due to insufficient drainage ports, which may impede pedestrian and vehicular traffic. Resulting in.

(b) Problems with the quality of concrete L-shaped, dish-shaped, U-shaped, V-shaped troughs, boxes, etc. are manufactured by pouring, and compared to concrete products such as centrifugal force, they have lower strength (mechanics, abrasion, freeze-thaw)
It is inferior to the water quality, and breaks down quickly (shorter service life), resulting in decreased drainage function and traffic obstruction. (Damage of the frame, breakage of the lid, deformation and damage of the grating, etc.) (c) Problems in terms of structure and scale 1 Since the capacity is only for quantitative drainage (L-shaped, dish-shaped, etc.)
(U, V-shaped troughs, boxes, etc.) cannot immediately respond to changes in drainage volume, even temporarily, and drainage problems tend to occur.

2. Ditches are prone to unevenness and misalignment, resulting in poor drainage and traffic obstruction. In other words, due to the short body length (less than 1.00 m), there are many joints (mortar joints), the weight of each piece is small, and the burial depth is shallow, resulting in uneven settlement of the foundation ground, frost heave,
Alternatively, there is a risk of water leakage or the structure shifting vertically or horizontally due to the impact of the vehicle, causing poor drainage.

B. Structure of the invention A. Means for solving the problem The present application attempts to solve the above-mentioned problem with the following structure.

In other words, solving the problem caused by the lack of drainage ports. By using the two-layer waterway of the present invention, the upper waterway becomes a water receiving port along its entire length, and the water outlet (shape, size, number) and By selecting the diameter of the lower layer pipe, the drainage capacity of the upper layer waterway is adapted to the location where it is installed, thereby solving problems with poor drainage on road surfaces and compound surfaces.

2nd - Solution to problems in terms of concrete quality The pipe manufactured by the present invention is a centrifugal reinforced concrete pipe that can be expected to have sufficient strength, and the roughness coefficient will also be improved, and as a result, the service life will be extended. This will solve the problem of poor drainage and traffic problems.

Problem 3 - Structural and scale issues 1 In the case of a method in which the drainage outlet is a basin or a partial grating, the channel until the water reaches the drainage outlet has only a quantitative flow capacity, especially in the case of a wide channel (L The longer the flow length (distance to the drainage outlet), the more turbulent flow will occur in waterways as they are affected by small amounts of sediment or obstructions (snow, garbage), making it difficult to form grooves. The proposed two-layer system separates the entire length of the pipe into a ``water receiving section'' and a ``drainage section'' and communicates between the two. By increasing the scale or number of ``drainage works'', it is possible to fix the dimples and increase the water-receiving capacity, thereby responding quickly to increases and changes in drainage volume and solving poor drainage problems.

2. The standard length of the waterway pipe of the present invention is l=2.43m/piece, which is 2 to 4 times longer than other products, so there are no seams and the weight per piece is also large. (Weight per meter is small) In addition, the joint part is a fit-in type (male, female), and the lower pipe part becomes the foundation of the upper waterway and is fully buried, so the pipe will not be displaced due to uneven subsidence of the foundation ground, frost heaving, or vehicle impact. This will prevent water leakage and poor drainage.

B. Example of the invention 1 is a two-layer waterway pipe according to the invention. The structure is such that a receiving channel 3 is provided on the upper surface of the channel pipe body 2 in the longitudinal direction of the channel pipe body, and the receiving channel 3 and the channel 4 are communicated with each other through a drain port 5 or a drain hole 6. There is.

1 is a two-layer waterway pipe of another embodiment. The structure is such that a water receiving channel 3' is provided on the upper surface of the water channel body 2', which is made of a reinforced concrete pipe with an integrated structure using the centrifugal force manufacturing method, and extends in the longitudinal direction of the water channel pipe 2'. ' and the water channel 4' are communicated through a drain port 5' or a drain hole 6'. In the figure, 1'' indicates reinforcement.In addition, the water channel 3,
Regarding 3', grating type 3A, dish type 3B, L type 3C, groove type 3D
and so on. A grating 3B' or a lid is removably attached as required.

C operation I will explain it along with the effects.

C. Effects of the invention As soon as surface water such as rainwater reaches the edge of a waterway, it begins to flow along the entire length of the pipe, flows down to the nearest water outlet or drainage hole, and then flows into the interior of the waterway pipe through this water outlet or drainage hole. In addition, if the capacity of the receiving waterway is insufficient after the pipe is installed, drain holes can be drilled to correct drainage problems. The surface water collected in this way is combined with other inflow water, if any, to flow down to a predetermined point through a lower pipe with a pipe diameter determined by the planned drainage volume, and is then discharged into a river, etc. from a spillway. As a result of the above-mentioned actions, the present invention can exhibit the following effects.

1 The drainage outlet is changed to a long water intake that spans the entire length of the pipe, eliminating stagnation of surface water.

2. Water receiving capacity can be easily increased even after pipe installation by adjusting the size and arrangement of water outlets (holes).

3. The useful life of the facility will be extended.

4. Construction period can be shortened.

b) The water and sewerage lines will be completed at once.

(b) Because it is long, there are fewer joints and no joining mortar is required, so the installation effort is reduced.

C. Mechanical construction increases laying capacity.

D. Excavation, pipe installation, and backfilling can be carried out consecutively.

5 Traffic safety can be ensured.

B. Shorter construction period.

(b) There is no breakage of the lid like in U- and V-shaped troughs.

C. There is no displacement of pipes due to uneven subsidence of the foundation ground, frost heave, etc.

6. It is economical.

B. Shortening the construction period.

(b) Since it is a two-layer type, water and sewerage can be done at the same time.

C. The useful life is extended.

D. Maintenance costs can be reduced.

[Brief explanation of drawings]

Fig. 1 is a plan view, Fig. 2 is a cross-sectional view taken along the line A-A, Fig. 3 is a cross-sectional view taken along the line B-B, Fig. 4 is a cross-sectional view taken along the line C-C with one part omitted, and Fig. 5 is a cross-sectional view taken along the line C-C. 6 is a sectional view taken along the line D-D, FIG. 7 is a sectional view taken along the line E-E, and FIG. 8 is a sectional view taken along the line F--
The F-line sectional view, FIGS. 9 and 10 are sectional views showing other embodiments. 1... Two-layer waterway pipe, 2... Waterway pipe body, 3...
Reception channel, 4...water channel, 5...water outlet, 6...water drain hole.

Claims (1)

[Scope of Claim for Utility Model Registration] 1. A receiving channel is provided on the upper surface of a waterway pipe in the longitudinal direction of the waterway pipe, and the receiving channel and the waterway are drain ports or drainage holes opened at desired locations. A two-layer waterway pipe characterized by being connected to each other. 2. The two-layer waterway pipe according to claim 1, wherein the waterway pipe body is constructed of a reinforced concrete pipe with an integrated structure manufactured by a centrifugal force manufacturing method.