JPH04146330A - Retaining wall water permeable concrete block and execution method for retaining wall - Google Patents

Abstract

PURPOSE:To promote execution efficiency by providing interlocking projected threads and interlocking recessed thread grooves respectively to the vertical ends and longitudinal sides of a block body formed of water-permeable concrete, and providing through- holes ranging from the longitudinal sides to the vertical ends. CONSTITUTION:Interlocking projected threads 1 and 1' and interlocking recessed thread grooves 2 and 2' are provided respectively to the vertical ends and longitudinal sides of a retaining wall water-permeable concrete block A formed of water-permeable concrete. Through-holes 3 passing through from the upper end to the lower end are provided to positions 1/4 of the overall length of the block from the longitudinal sides of the block A. In the case of execution, the base is constructed to a base portion on the slope so that coupling reinforcing steel is used as an anchor. In addition, the through-holes 3 of the block A are inserted in the reinforcing steel to interlock the projected thread 1' and recessed thread groove 2' and projected thread 1 and recessed thread groove 2 of blocks A adjacent to up and down with each other, and the blocks A adjacent to up and down are so bonded that they are discrepant in right and left directions on semi-length of the overall length of the block to position.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a water-permeable concrete block for use as a low-height retaining wall in residential land preparation work, etc., and a method for constructing a retaining wall using the same block.

(Prior Art) Conventionally, retaining walls of this type have been made of reinforced concrete or concrete blocks.

In the case of a reinforced concrete retaining wall, the water permeability of the retaining wall's constituent materials is poor, so as shown in Figures 12 and 13, drainage vibrators (
(b), and backfill crushed stone (d) was loaded between the back of the retaining wall (a) and the slope (C).

In addition, in the case of a concrete block retaining wall where concrete blocks are placed on the slope, in addition to drainage pipes and crushed stone backing, concrete is poured into the wall to reinforce the retaining wall.

[Problem to be solved by the invention]

In the case of a reinforced concrete retaining wall, although the retaining wall itself is strong, it requires form work, reinforcing work, concrete pouring work, etc. in addition to the construction of drainage pipes and backfilling crushed stone, making the construction complicated and slow. Construction costs went up.

In addition, in the case of concrete block retaining walls, formwork work,
Although there was no reinforcing work, the construction was complicated and required time and cost to reinforce the retaining wall.

The present invention has been proposed in view of the problems of the prior art described above, and it is an object of the present invention to provide a water-permeable concrete block for a retaining wall that has water permeability, high strength, and improved workability.

(Means for Solving the Problems) In order to achieve the above object, the water-permeable concrete block for a retaining wall according to the present invention has retaining protrusions on the upper and lower end faces and on the left and right sides of the block body formed from water-permeable concrete. In addition to disposing grooves for engagement in rows, through-holes for connecting reinforcing bars are provided at 1/4 of the total length of the block from both left and right sides, and communicate with the upper and lower end surfaces.

Further, according to the retaining wall construction method of the present invention, the permeable concrete blocks for the retaining wall are brick-laid along the slope, and the connecting reinforcing bars are passed through the through holes of the vertically adjacent blocks. A retaining wall is constructed by connecting each block.

(Function) As mentioned above, the water-permeable concrete blocks for wli walls according to the present invention are made of water-permeable concrete, so when a retaining wall is constructed by masonry of the same blocks, spring water from the slope, etc. is filtered through the block, permeates the surface of the concrete block, and is drained or evaporated.

Furthermore, the block is provided with retaining ridges and locking grooves on its upper and lower end faces and on its left and right sides, so that the ridges and grooves can be easily aligned during masonry of the block. Locking together, the blocks are firmly assembled.

In addition, the block is provided with a through hole that communicates with the upper and lower end surfaces at 1/4 of the total length from the left and right sides, so that when the block is laid with bricks, the through hole of each stage of the block extends in the vertical direction. The blocks are reliably integrated by having holes extending vertically through the through holes and passing through the connecting reinforcing bars.

(Example) The present invention will be described below with reference to the illustrated embodiments.

(2) is a rectangular parallelepiped-shaped water-permeable concrete block for retaining walls made of water-permeable concrete, with retaining ridges (1) and (1') and retaining grooves (
2) (2'l is provided, and the total length of the block is l from the left and right sides.
A through hole (3) for a connecting reinforcing bar that communicates with the upper and lower end surfaces is provided at 1/4 of the area.

The permeable concrete constituting the block (2) is a raised concrete containing 4 to 9% fine bone particles, and its details are given in Japanese Patent Publication No. 63-27311 and Utility Model Publication No. 63-62.
It is described in Publication No. 71.

Then, the slope (81) is cut at a predetermined inclination angle, the connecting reinforcing bars (4) of an appropriate length are anchored to the base part, and concrete is poured to construct the base (O). ) is inserted into the through hole (3) of the block prisoner, and the right and left side protrusions (1') and grooves (
2'), the protruding ridges (1
) and concave grooves (2) engage with each other, and the blocks (2) that are vertically adjacent to each other are laid in a brick-like manner so that they are positioned half the length l of the block overall length m in the horizontal direction.

In addition, the slope with high water permeability (in the case of 81, the block (
2) Lay mortar on the joints.

In other cases, it may be an open joint.

Also, fill the gap between the block and the slope (B) with sand.

When masonrying the blocks (2), the connecting reinforcing bars (4) are connected with lengths (5) at every appropriate number of stages, and are connected to the top of the retaining wall. Also, if you want to increase the strength of your retaining wall,
The connecting reinforcing bars (4) may be tensioned at the top.

When the masonry of the blocks (2) is thus completed, mortar grout is injected into the through holes (3) of the connecting reinforcing bars to prevent rust on the connecting reinforcing bars (4), and the top part 0 of the retaining wall is finished with concrete or mortar. .

The prong (2) may be formed into a parallelogram cross-sectional shape having an inclined surface matching the slope of the retaining wall, as shown in FIG.

Since the illustrated embodiment is configured as described above, the spring water on the slope 0 is filtered through the permeable concrete block, becomes clear water, permeates the surface of the concrete block, and is drained. Since water is evaporated, there is no need for a drainage pipe, and drainage or evaporation occurs by seepage from the entire surface of the concrete block. No need for crushed stone to prevent spills.

(Effects of the Invention) As described above, the blocks for retaining walls according to the present invention are made of water-permeable concrete, so when constructing a retaining wall by masonry of the same blocks, drainage pipes, backfilling crushed stone, etc. , construction is simple as no concrete is required, shortening the construction period and reducing construction costs.

Further, the block is provided with engagement ridges and engagement grooves on the upper and lower end surfaces and left and right side surfaces of the block body, respectively,
The retaining wall constructed by masonry of the blocks is a retaining wall made of blocks by providing through holes for connecting reinforcing bars that communicate with the upper and lower end faces at 1/4 of the total length of the block from both left and right sides. while maintaining high strength.

[Brief explanation of the drawing]

Fig. 1 is a front view showing an embodiment of a permeable concrete block for retaining walls according to the present invention, Fig. 2 is a plan view thereof, Fig. 3 is a side view thereof, Fig. 4 is a perspective view thereof, and Fig. 5 2 is a view taken along arrow V-V in FIG. 2, FIG. 6 is a longitudinal side view showing the masonry state of the block, FIG. 7 is a longitudinal side view showing the masonry state of another embodiment of the block, and FIG. 9 is a plan view of the connecting reinforcing bars, FIG. 9 is a side view thereof, FIG. 10 is a vertical side view of the retaining wall constructed using the blocks, FIG. 11 is a partial front view thereof, and FIG. 12 is a conventional reinforced concrete retaining wall. FIG. 13 is a partial front view thereof. (2)...Water permeable concrete block for retaining wall, +B)
-... Slope, (1) (1'l -... Engagement ridge, (21 (21-... Engagement groove, (3) -
...Through hole, (4)--Connection reinforcing bar. Agent Patent attorney Shige Okamoto 1st Ward 1 for 1 person outside of the literature Figure 11 Figure 13

Claims (2)

[Claims] (1) Engagement ridges and engagement grooves are provided on the upper and lower end faces and left and right side surfaces of the block body formed from water-permeable concrete, and at 1/4 of the total length of the block from both left and right sides. A water-permeable concrete block for a retaining wall, characterized in that the block is provided with through holes for connecting reinforcing bars that communicate across the upper and lower end surfaces. (2) The retaining wall is constructed by brick-laying the permeable concrete blocks for the retaining wall along the slope, and connecting the blocks by passing connecting reinforcing bars through the through holes of the vertically adjacent blocks. , a retaining wall construction method characterized by omitting drainage pipes and backfilling crushed stone.