JP2002194755A - Block equipped with drain gutters - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a block equipped with drain gutters, which smoothly guides water from a rear surface to a front surface of a retaining wall, eliminates efflux within the retaining wall, and is easy to produce. SOLUTION: The block has a beam 2 arranged thereacross from a front wall 1 toward a rear portion thereof, and a gutter 3 is formed in an upper surface or a lower surface of the beam 2 from the rear portion toward the front wall. Further, a normal-time drain gutter 6 communicating with the gutter is formed at a front portion of the block so as to extend toward an end of the block. In this manner, the block equipped with drain gutters is formed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drainage block capable of draining the back of a retaining wall.

[0002]

2. Description of the Related Art It is important to reduce the water pressure generated on the back of a retaining wall from the viewpoint of the stability of the retaining wall. In addition, it is also important to guide the drainage in a predetermined direction from the back and to flow the drainage to a drainage ditch or the like from the viewpoint of construction, maintenance, and durability. Therefore, there are many examples in which a drain hole is provided in a block constituting a retaining wall. For example, actual Kaihei 5-186843
And JP-A-11-61857.

[0003]

[Problems to be Solved by the Invention]
No. has an inclined groove on the side wall of the block to guide water from the back to the front of the retaining wall. However, most of the side walls are bonded to each other using joint concrete, so that clogging is likely to occur. In addition, since water falls down the inclined groove along the side wall in a vertical direction, the joint concrete is eroded, and the deterioration speed of the retaining wall is high. In order to provide a through-hole in the body of the block as in the latter JP-A-11-61857, the manufacturing process is complicated by entanglement with the punching die,
There is a problem that strength is reduced depending on a portion where the through hole is provided. In addition, there are cases in which the front of the retaining wall is made dirty by drainage and the growth of moss and scales that propagate in the drainage, which is not preferable in view of the landscape. Therefore, the present invention has studied a block with a drain groove, which guides water smoothly from the back surface to the front surface of the retaining wall, eliminates the flow in the retaining wall, and is easy to manufacture.

[0004]

As a result of studying the above problems, a block with a drain groove is provided in which a groove is provided on the upper surface or the lower surface of a beam provided in the back direction from the front wall of the block toward the front wall from the back. It is. It is preferable that the slope of the groove has a substantially downward slope on the front wall side of the block when the body of the block is constructed on a retaining wall or the like. In addition, the above-mentioned groove is provided from the back to the front wall on the upper surface or the lower surface of the beam provided from the front wall of the block to the back, and the normal drainage groove communicating with the groove to the front of the block is directed toward the end of the block. It was provided. In order to allow drainage in the normal drainage ditch, a weir may be provided at the front of the ditch, or the bottom of the normal drainage ditch may be formed lower than the bottom of the ditch. At one end or both ends of the block, it is desirable to provide a vertical normal drain for guiding drainage to the normal drain of the lower block at the end of the normal drain.

In the case of a type in which blocks are stacked in potatoes, the normal drainage groove having a low bottom portion may be provided only from the groove provided on the beam toward the end of the block. The groove may be provided so as to reach from the vicinity of the center of the front wall of the block to the end of the block via the groove. When provided in this manner, drainage from the back of the upper block is transmitted through the drainage groove, flows down from the end of the block through the drainage groove during normal times, and joints from the end of the block. It flows to. Therefore, drainage does not flow on the retaining wall surface in normal times. However, when the flow rate increases, the increased amount flows out of the retaining wall from the front of the drainage ditch, and the water pressure at the back of the retaining wall can be reduced.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail. FIG. 1 is a plan view of a block with a drain groove according to an embodiment of the present invention, and FIG.
1 is an AA sectional view in FIG. 1, FIG. 3 is an enlarged view of a P part in FIG. 1, FIG.
FIG. 3 is an enlarged view of a portion Q in FIG. 2. FIG. 5 is a perspective view of a main part when the blocks with drainage grooves according to the present embodiment are piled in potatoes.

As apparent from these figures, this block with a drain groove has a groove 3 provided on the upper surface of a beam 2 provided from the front wall 1 to the back of the block. In this example, the rear wall 4 is provided on the back. However, if there is only the beam 2 in a structure without a rear wall, such as a T-shaped, an L-shaped, or a π-shaped, the groove 3 is provided on the upper portion to have a similar structure. be able to. In this example, a groove 5 is also provided on the lower surface of the beam 2 so that the groove 5 is formed at the time of construction with the groove 3 on the upper surface of the lower block so that the hole diameter is increased to cope with an increase in flow rate. In this example, the groove 3 has a low downward slope on the front wall 1 side, but it is necessary to provide a downward slope in the groove 3 of the product depending on whether the retaining wall has a leaning structure, a vertical wall surface, or a use mode. There may be no case. The groove 3 can be provided on each of the plurality of beams 2 on either the upper surface or the lower surface.

FIGS. 3 and 4 show the state of the front part of this block.
Seen in The normal drainage groove 6 communicating with the groove 3 is provided to the front of the block toward the end of the block (the end in the left-right direction in the drawing). A weir 7 is provided at the front of the groove 3 in order to enable drainage to the drainage groove 6 at normal times. The weir 7 is a projection that stands up from the bottom of the groove 3 leaving an opening at the top. In order to enable drainage to the normal drainage groove 6, the bottom of the normal drainage groove 6 may be formed lower than the bottom of the groove 3.

FIG. 5 shows an example in which the blocks with drainage grooves of this embodiment are piled up in potatoes. Drainage from the back of the upper block flows through the groove 3, flows down the joint 9 from the end of the block through the drainage groove 6, and flows downward. However, when the flow rate increases, as shown in FIG. 4, the water flows out of the retaining wall beyond the weir 7 in front of the groove 3.

FIG. 6 is a perspective view of another embodiment of the present invention in which blocks with drain grooves are staggered. In order to enable the staggered stacking, a normal drainage groove 6 which intersects the groove 3 provided in the beam 2 of the block at the front is preferably provided so as to reach from the vicinity of the center of the front wall of the block through the groove 3 to the end of the block. . Drainage from the back of the upper block flows through the groove 3, flows down the joint 9 from the end of the block through the drainage groove 6 in normal times,
The water further flows down the drainage groove 6 of the lower block and flows downward. In addition, in order to match the vertical gradient of the construction site, it is necessary to use the block with a gradient in the construction extension direction, but in order to cope with such use, the drainage groove 6 is normally placed near the center of the front wall. It is also effective to provide both sides to reach the end of the block. An example is shown below.

FIG. 7 is a plan view of another embodiment of the block with a drain groove according to the present invention. Groove 3 provided in beam 2 of block
The drainage groove 6 which normally intersects the front of the block is provided so as to reach both ends of the block from near the center of the front wall of the block via the groove 3. As shown in FIG. 8, the drainage flowing in the groove 3 can flow in the drainage groove 6 in the normal direction in either direction. 9 is a sectional view taken along line BB in FIG. 7, and FIG.
It is a part enlarged view. In this example, a groove 5 provided on the lower surface of the beam 2 is formed deeply, opened to the front wall 1 as it is, and intersects with the lower normal drainage groove 6 just before the opening. When the amount of water is small, the water normally flows through the drainage groove 6, and when the amount of water is large, the water flows from the opening 5a. FIG. 11 is a perspective view of an example in which the block with a drain groove of the present embodiment is piled up in potatoes. FIG. 12 shows an example in which the blocks are staggered.

FIG. 13 shows another embodiment of the block with a drain groove according to the present invention, and FIG. 14 (corresponding to the CC section in FIG. 13).
Shows the state where the blocks are stacked. In this example, beam 2
A water collecting groove 10 for collecting drainage is provided near the intersection of the beam 2 and the front wall 1 so as to normally communicate with the drainage groove 6 in place of the groove 5 and the like provided on the lower surface of the main body.

FIG. 15 shows an example in which blocks with drainage grooves provided only with the grooves 3 are piled up. If the rear slope does not require drainage at all times, it may not be necessary to provide a drainage channel at normal times.

When the drainage groove 6 is normally provided on the front wall,
As shown in FIG. 16, the weir 7 may be extended to the end of the front wall of the block. If the allowable flow rate of the drainage groove 6 can normally cope with an increase in the flow rate, the front end of the groove 3 may be closed to the upper end of the front wall.

[0015]

The block with drainage grooves of the present invention can guide water smoothly from the back to the front of the retaining wall, and contribute to the maintenance of the retaining wall. Eliminating water erosion and strength reduction in the retaining wall, and simply changing the normal mold so that the drain groove can be formed, there is almost no increase in cost and easy manufacturing. is there. The drainage on the back side can be discharged to the front side by the same construction method as that of a normal retaining wall.

[Brief description of the drawings]

FIG. 1 is a plan view of a block with a drain groove according to an embodiment of the present invention.

FIG. 2 is a sectional view taken along the line AA in FIG.

FIG. 3 is an enlarged view of a part P in FIG.

FIG. 4 is an enlarged view of a portion Q in FIG. 2;

FIG. 5 is a perspective view of a main part when the blocks with drainage grooves according to the present embodiment are piled up in potatoes.

FIG. 6 is a perspective view of an example in which blocks with drainage grooves according to another embodiment of the present invention are stacked in a staggered manner.

FIG. 7 is a plan view of another embodiment of the block with a drain groove of the present invention.

FIG. 8 is an enlarged view of a portion R in FIG. 7;

FIG. 9 is a sectional view taken along the line BB in FIG. 7;

FIG. 10 is an enlarged view of a portion S in FIG. 9;

FIG. 11 is a perspective view of an example in which the blocks with drainage grooves according to the embodiment of the present invention are stacked in potatoes.

FIG. 12 is a perspective view of an example in which the blocks are staggered.

FIG. 13 is a perspective view of a block with a drain groove according to another embodiment.

FIG. 14 is a sectional view taken along line CC in FIG.

FIG. 15 is a perspective view of an example in which blocks with drain grooves provided only with grooves are stacked in potatoes.

FIG. 16 is a perspective view of a drain grooved block according to another embodiment of the present invention.

[Explanation of symbols]

 Reference Signs List 1 front wall 2 beam 3 groove 4 rear wall 5 groove on lower surface of beam 6 normal drainage ditch 7 weir 9 joint 10 water collection ditch

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Shuji Ono 630-1, Kaida, Ochiai-cho, Maniwa-gun, Okayama Prefecture F-term in Landes Corporation (reference) 2D048 AA23 CA11

Claims (4)

[Claims] 1. A block with a drain groove in which a groove is provided on an upper surface or a lower surface of a beam provided from a front wall of the block toward a back portion from the back portion toward the front wall. 2. A groove is provided on an upper surface or a lower surface of a beam provided from a front wall of a block to a back portion toward a front wall from a back portion, and a normal drainage groove communicating with the groove is formed at a block front portion at a block end portion. Block with drain groove provided for 3. The drainage ditch according to claim 2, wherein a weir is formed at the front of the ditch, or the bottom of the normal drainage ditch is formed lower than the bottom of the ditch to enable drainage to the drainage ditch in normal times. With block. 4. The block with a drain groove according to claim 2, wherein a normal drain groove in a block vertical direction is provided at one end or both ends of the normal drain groove to enable drainage to the normal drain groove of the lower block.