JPS602283Y2 - L-shaped concrete block for retaining wall - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] The present invention is a concrete block that can quickly and firmly construct retaining wall structures for quay revetments, roads, rivers, housing sites, etc., and that can increase the utilization area. Regarding.

[Prior art] Conventionally, as a retaining wall structure for the above purpose,
No. 164 and Utility Model Publication No. 36-22516,
Some use L-shaped blocks.

[Problem that the invention attempts to solve]

However, these do not have a fixed part at all, or even if they have one, they do not have a tip, so they are not fully integrated with the constructed soil, and they only have one vertical reinforcing bar hole, which reduces the connection strength. It was also insufficient.

The present invention is an attempt to solve the drawbacks of the conventional technology, and aims to create a retaining wall that can fully withstand earthquakes, floods, etc. by burying the retaining part and the fixed part deep into the construction surface and integrating it with the ruined ground. The purpose is to provide concrete blocks that can be constructed at low cost.

[Means for solving problems]

In order to achieve the above object, the present invention includes a rectangular wall forming part, a retaining part protruding from approximately 1/4 of the wall width of the wall forming part and extending in a right angle direction from the wall forming part; A fixed part that is attached to the tip of the part, has a volume substantially equal to the connecting base end of the retaining part, has a tip for lateral pressure buffering on the side facing the wall forming part, and forms an earth pressure resistance surface on the back surface of both sides. A large-diameter vertical hole for inserting reinforcing steel and filling with concrete is formed at the base end of the connection and at the fixed part.

〔Example〕

Hereinafter, the structure and other details of the L-shaped concrete block according to the present invention will be explained with reference to FIGS. 1, 3, 8, and 10.

In the figure, 1 is a reinforced or unreinforced L-shaped concrete block body, 2 is a wall forming part that is a rectangular plate-like body with a plain or bordered surface, and 3 is a wall forming part at approximately 1/4 of the height of 2. A retaining part 4 protruding perpendicularly to the back surface is provided continuously with the retaining part 3, and widens from the retaining part 3 toward both sides, and a fixed part 5 is buried deeply in the direction toward the center of the construction surface together with the retaining part 3. A base reinforcing bar insertion/concrete vertical hole provided at the base of the retaining part 3, 6 a fixing part reinforcing bar insertion/concrete vertical hole provided approximately at the center of the fixing part, 7 a suture provided center-symmetrically with the base vertical through hole 5. A vertical through hole 8 is formed in a concave shape on the back side of both widened parts of the fixing part 4,
9 is a resistance surface that integrates the L-shaped block main body 1 with the constructed soil pressed between the retaining parts 3 and 3; 9 is the fixed part 4;
10. a lateral pressure buffering tip for buffering lateral pressure received by the body; 10.
if is a pushing pawl and a receiving pawl provided at both ends of the wall forming part 2, and 12 is an end face at both ends of the wall forming part 2.

Furthermore, in the above configuration, since the fixing part 4 has substantially the same volume as the base end connecting part of the retaining part 3, it is possible to stabilize the fixing part 4, that is, to stabilize the L-shaped concrete block body 1.

The concrete blocks shown in FIGS. 4 and 5 and 1 and 12 are used as spacer blocks shown in FIGS. 7 and 14.

A method of constructing a retaining wall using L-shaped concrete blocks according to an embodiment of the present invention will be explained with reference to FIGS. 6 and 7.

In this example, the wall height is 50C1+! , the width of the wall forming part 2 is 12 mm, the length around the fixed part 4 is 12 mm, the thickness of the wall forming part and the retaining part is 13 cm, the internal reinforcing bar 911rIR diameter is approximately 5 ky,
Using L-shaped concrete blocks with a unit weight of 380 kg, a wall forming part 2 is provided at the girder boundary limit for the purpose of widening the road surface of a local road to a height of 2 m, and a retaining wall is constructed in a vertical manner. It is.

First, the contact surfaces of the L-shaped concrete blocks, that is, the contact surfaces of the wall forming part 2, retaining part 3, and fixing part 4, and their surroundings are grounded, and the foundation concrete of the required thickness is poured horizontally, and at the same time, the required vertical penetrations are Longitudinal reinforcing bars 13 of the required strength are embedded and fixed in the reinforcing bar holes 4 and 6 positions.

Next, each of the fixed base longitudinal reinforcing bars 13 and fixed part longitudinal reinforcing bars 13 are fitted into the respective vertical through holes 5 and 6, and the pushing claws 10 and receiving claws 11 are combined to unify the normal or reverse position. Build and extend the first stage with accurate dimensions.

To penetrate the vertical reinforcement, first, the vertical reinforcement 13 is embedded in the foundation, and an L-shaped concrete block is fitted to the tip of the reinforcement and lowered.

Or cut the reinforcing bars to approximately twice the height of one L-shaped concrete block to obtain the height of the L-shaped concrete block.

Ready-mixed concrete is injected together with reinforcing bars in a desired manner, such as by alternating reinforcing bars as single or multiple reinforcing bars, with the joint at the center of the concrete.

After fixing for a whole day, the space between the wall forming part 2, the retaining part 3, and the fixing part 4 formed in the first fold is filled with construction soil, excluding the necessary drainage channels, and water is poured into the upper part of this filling. Ideally, the retaining part 3 and fixing part 4 should be fixed to the construction surface by sinking, but if water injection is not possible, the entire folded compression space, especially around the retaining part 3 fixing part 4, should be fixed by a predetermined method. tamp down.

In this way, after constructing the first stage, the second stage is constructed, but when the second stage L-shaped concrete block is constructed in the opposite direction from the first stage, the retaining part 3 and the fixed part 4 are stacked at the same position. However, the pushing pawls 10 and the i-receiving pawls 11 at both ends of the wall forming portion 2 are located approximately at the center of the concrete block.

As with the first stage, the construction is extended, filled with soil, and water is poured repeatedly to reach the specified height.

In the above construction, the constructed soil pressed into the box-shaped space formed between the retaining parts 3, 3 is a single-shaped block because the fixed part 4 has a resistance surface 8 on both enlarged width parts. will be strongly integrated.

Furthermore, the pointed end 9 of the fixing part 4 can effectively disperse lateral pressure, thereby stabilizing the block.

After that, the specified ballast or gravel is laid on the road top tread,
When the vehicle is allowed to pass, the prepared surface around the holding part 3 and the fixed part 4 is further fixed, and at the same time as the transition to the prepared ground, the holding part 3 and the fixed part 4, which are stacked on top of each other, also form fixed pillars and are constructed. Integrate the ground and fixed pillars.

After that, paving work will be carried out and the road surface will be widened.

As described above, the vertical structure has a stable vertical range of height up to about 1.6@, which is the length of the fixing part 4.

Therefore, when the height of the retaining wall exceeds this, the stabilizing effect of the retaining wall is significant at a slight slope, that is, in the range of 1/10 to 1/3 of the conventional retaining wall construction slope.

This is because when building a retaining wall by tilting it even slightly toward the center of the construction surface, the stacked fixed parts 4, that is, each fixed column, will be tilted and fixed by the soil pressure and load pressure that are constantly applied from directly above. Even if this angle of inclination is small, it is difficult to make it vertical (that is, the angle of inclination is 0).

Therefore, the utilization rate of land area is very advantageous.

Next, a second embodiment will be explained with reference to FIGS. 13 and 14.

This example is used to construct a reclaimed retaining wall that can withstand earthquakes, vibrations, floods, etc., and the structure of the L-shaped concrete blocks used is such that each L-shaped concrete block will not separate in the event of a disaster. The one provided with vertical suture holes 7 is used.

Therefore, the receiving claws 10 and pushing claws 11 at both ends are unnecessary, and a reinforced L-shaped concrete block is used.

First, after the foundation is solidified, a foundation slab is poured, or the walls are laid horizontally along the length of the wall, and uneven levels are made up of the foundation.

The required gradient in the depth direction of the wall surface is determined by the foundation concrete.

As mentioned above, the slope of the conventional block construction is in the range of 173 to 115, but when an earthquake is used as a control, it is natural to increase the slope rate.

The first stage of penetrating reinforcement was constructed and extended in the same manner as in the first embodiment.
This method involves pouring water into the soil, stacking the second layer in an inverted position, and repeating this process to construct a retaining wall of the required height.

As described above, the L-shaped concrete block according to the present invention has the following effects.

■ The lateral pressure buffering tip provided on the fixed part allows lateral pressure to be smoothly dispersed within the compression space.

■ When constructing a retaining wall, the pressure clay of both retaining sections becomes an L-shaped block due to cooperation with the earth pressure resistance surfaces that are sufficiently widened and formed on both sides of the fixed section as well as both retaining sections. Strongly integrated.

(2) Since the fixing part has approximately the same volume as the retaining part base end connecting part, it is possible to stabilize the fixing part, that is, to stabilize the L-shaped concrete block.

■ Vertical holes are provided not only in the fixed part, but also in the connection part between the wall forming part and the retaining part, and since the circumference can be filled with not only reinforcing steel but also a sufficient amount of concrete, the concrete has sufficient connection strength.

[Brief explanation of drawings]

Figure 1 is a plan view of the L-shaped concrete block used in the first embodiment, Figure 2 is its front view, Figure 3 is its side view, and Figure 4 is its front view.
Figures a and 4b are plan views of spacer blocks similarly used in the first embodiment, Figures 5a and 5b are front views of the same, Figure 6 is a plan view of a retaining wall constructed using the blocks, and Figure 7 8 is a plan view of the L-shaped concrete block used in the second embodiment, FIG. 9 is a front view of the same, and FIG. 10 is a front view of the same.
11 is a plan view of the spacer block used in the second embodiment, FIG. 12 is a front view of the spacer block, FIG. 13 is a plan view of the retaining wall constructed using the blocks, and FIG.
The figure is a front view of the same. In the figure, 1...L-shaped concrete block body,
2... Wall surface forming part, 3... Retaining part, 4...
...Fixed part, 5...Vertical through hole for base reinforcing bar insertion and concrete filling, 6...Fixed part reinforcing bar insertion and vertical through hole for concrete filling, 7... Vertical suture hole, 8... Resistance surface, 9... Point for lateral pressure buffering, 10... Pressing claw, 11... Curved receiving claw, 12...
·····End face.

Claims (1)

[Scope of utility model registration request] A rectangular wall forming part, a retaining part protruding from approximately 1/4 of the wall width of the wall forming part and extending perpendicularly from the wall forming part, and a connecting base of the retaining part attached to the tip of the retaining part. It has a volume substantially equal to that of the end, has a lateral pressure buffering tip on the side facing the wall forming part, and has a fixing part forming an earth pressure resistance surface on the back surface of both sides, and the connecting base end and the fixing part A retaining wall-shaped concrete block with vertical holes for inserting large-diameter reinforcing bars and filling with concrete.