JPS586016B2 - Construction method of retaining wall integrated with L-shaped concrete blocks and buried piles - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a construction method that quickly strengthens retaining walls for quay walls, roads, rivers, residential land development, etc. and increases the utilization area.
This is particularly relevant when constructing a retaining wall that is desired to be higher than the maximum height for vertical construction.

Conventionally, all retaining wall structures for the above purpose were constructed using support construction methods.

Therefore, it can withstand earthquakes, vibrations, floods, etc., or perpendicular to the wall surface.
It is considered inappropriate for concrete block structures to be constructed at an angle close to vertical, and the current situation is that important parts of retaining walls are constructed using concrete retaining walls by investing a large amount of money.

The present invention was created in consideration of the current state of affairs, and involves burying the retaining part and fixing part of the L-shaped concrete block deep into the construction surface, integrating the L-shaped concrete block and the construction ground, and further burying the retaining part and the fixing part of the L-shaped concrete block. By connecting the piles to the fixed parts, the above integration is further strengthened, and a retaining wall that can withstand earthquakes, floods, etc., and has a height that exceeds the vertical construction limit height can be constructed at a low cost. The aim is to provide a method for doing so.

The present invention provides a retaining portion extending approximately perpendicularly from the wall forming portion at a location corresponding to approximately 1/4 of the wall width at the back of the wall forming portion, and a fixing portion having a vertical reinforcing bar hole at the tip of the retaining portion. L-shaped concrete blocks with longitudinal reinforcing bars provided in the required areas are aligned with each longitudinal reinforcing bar standing up from the foundation along the construction surface, and stacked alternately in the opposite direction. Compounding soil is pressed into the box-shaped space formed between each retaining part and fixed part, and a pile is buried laterally parallel to the construction surface behind the L-shaped concrete block, and the pile is inserted into the L-shaped concrete block. This invention relates to a method for constructing a retaining wall that is integrated with an L-shaped concrete block and buried piles, which is characterized by being tightened and fixed with longitudinal reinforcing bars at the fixed part of the retaining wall.

Hereinafter, the method for constructing a retaining wall according to the present invention will be specifically explained with reference to an embodiment shown in FIGS. 1 to 11.

Reinforced or unreinforced concrete blocks 1 and buried piles used in this example are shown in detail in Figs. 3 is a retaining portion whose base end protrudes from the back surface corresponding to approximately 1/4 of the width of the wall forming portion 2 and extends approximately at right angles to the wall forming portion; 4 is a retaining portion; A fixed part is provided continuously with 3 and buried deeply in the direction of the center of the construction surface together with the retaining part 3, 5 is a base longitudinal reinforcing bar hole provided at the base end of the retaining part 3, and 6 is provided approximately at the Φ center of the fixed part 4. The fixing part longitudinal reinforcing bar hole 7 is a sutured longitudinal reinforcing bar hole provided in a centrally symmetrical position with respect to the base longitudinal reinforcing bar hole 5.
8 is a resistance surface that prevents the fixed part 4 from moving in the wall direction; 9
Points 10 and 11 buffer the lateral pressure received by the fixed part 4, 10 and 11 are pushing claws and receiving claws provided at both ends of the wall forming part 2, 12 are end surfaces at both ends of the wall forming part, and 13 are vertical reinforcing bar holes 5 and 7. 14 is a fixed column formed when the fixing part 4 is assembled integrally, 15 is a pile made of concrete or pine logs, etc., 16 is a tension reinforcing bar that tightens the longitudinal reinforcing bars 13 and the pile 15, 17 is the turnbuckle that tightens this.

Note that Figures 4a and b, Figures 5a and b, and Figures 11 and 12
The concrete block shown in the figure is used as a spacer block.

In addition, in the configuration of the above-mentioned wedge-shaped concrete block 1,
The weight of the block is about 200 kg or more, the width of the wall forming part 2 is about 2.5 to 3 times the height as standard, and the length of the fixed part 4 to the tip 9 is approximately the width of the wall forming part 2. Although they are made equal, they can be lengthened or shortened as appropriate depending on the purpose.

Furthermore, it is preferable that the volume of the fixing part 4 is approximately equal to the base end volume of the retaining part 3.Next, the retaining wall construction method according to this embodiment will be specifically explained with reference to FIG. 11 (the blocks used are (This is an L-shaped concrete block shown in Figures 1 to 3).

The purpose of this embodiment is to expand a local road, and a retaining wall is constructed in a vertical manner by providing wall forming portions 2 at the lower boundary limits of the sides.

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 foundation concrete of the required thickness is poured horizontally, and at the same time, the required longitudinal reinforcing bar holes 5 are formed. This longitudinal reinforcing bar 13 with the required strength is embedded and fixed at the , 6 positions.

Next, each of the fixed foundation vertical reinforcement bars 13 and the fixed part vertical reinforcement bars 13 are fitted into the respective vertical reinforcement holes 5 and 6,
The pushing claws 10 and the receiving claws 11 are combined in the normal or reversed position, and the first stage is constructed and extended with accurate dimensions.

However, the method of penetrating vertical reinforcement was first to use vertical reinforcement 13 in the foundation.
Embed it, fit the L-shaped concrete block to the tip of the reinforcing bar, and lower it.

Or, cut the reinforcing bars to about twice the height of one L-shaped concrete block and use the joint at the center of the height of the L-shaped concrete block as single or multiple reinforcing bars, etc., alternately, etc.
Inject ready-mixed concrete while installing reinforcing bars in the required manner, and after fixing the concrete, fill in constructed soil between the wall forming part 2 formed in the shape of a first stage, the retaining part 3, and the fixing part 4, excluding the necessary drainage channels. , water is poured into this buried soil part to sink the constructed soil and create a retaining section 3.
Ideally, the fixing part 4 should be fixed to the construction surface, but if water injection is not possible, the entire reclaimed area, especially the area around the retaining part 3 fixing part 4, should be tamped down using a predetermined method.

In this way, after constructing the first stage, the second stage is constructed, but when the second stage L-shaped concrete blocks are constructed in the opposite position from the first stage, the retaining parts 3 and fixing parts 4 are stacked at the same position. The positions of the pushing claws 10 and the receiving claws 11 at both ends of the wall forming portion 2 are located approximately at the center of the lower L-shaped concrete block.

This is constructed in the same way as the first stage, and repeated filling and water injection is carried out to a predetermined height.

On the other hand, the pile 15 is buried in parallel with the above work, but first the installation position of the pile 15 is determined.

In other words, the installation position of the pile 15 was determined by strength calculation, either single at the 5th station of the wall height, or multiple or multiple piles such as the 3rd and 6th stations, and the construction height reached the predetermined position for burying the pile 15. At times, one side of the tension reinforcing bars 16 is fixed to the vertical reinforcing bars 13 that penetrate each L-shaped concrete block fixing part 4 in parallel.

However, on the other hand, a predetermined distance is set from the fixed part 4 of the L-shaped concrete block on the construction surface, and the wall surface forming part 2 is parallel to the horizontal direction and at almost the same height as the vertical height of the fixed part 4 of the L-shaped concrete block. Each fixing part 4 provided on the pile 15 in
The pile 15 is buried with the tensile bars 16 corresponding to the positions facing the vertical reinforcing bars, and is fixed by water injection or pressurization.

After both are fixed, both tension reinforcing bars 16 are attached to the turnbuckle 1.
7 and tighten it, apply rust prevention to the required parts, and build it to the required height by filling soil, either single or repeated.

Therefore, when ballast, sand, etc. are spread on the treads and vehicles are passed through, the created surface around the fixed part 4 is fixed as created ground (the created surface changes), and the stacked fixed parts 4 are fixed as fixed pillars. 14 is formed to integrate the prepared ground and the fixed pillar 14.

After that, paving work and road widening work will be completed.

As described above, according to the present invention, even a retaining wall having a height exceeding the limit height for vertical construction can be constructed easily, quickly and inexpensively, and has sufficient strength against earthquakes and vibrations.
This has the advantage that it can be made with stability.

[Brief explanation of drawings]

Fig. 1 is a plan view of an L-shaped concrete block used in an embodiment of the present invention, Fig. 2 is a front view of the same, Fig. 3 is a side view of the same,
4a and 4b are plan views of a spacer block similarly used in the first embodiment, 5a+b are front views thereof, 6 are plan views of modified examples of the L-shaped concrete block, and 7
The figures are the same front view, Fig. 8 is the same side view, Fig. 9 is the plan view of the same spacer block, Fig. 10 is the same front view, and Fig. 11 is the L-shaped concrete block shown in Figs. 1 to 5. FIG. 2 is an exposed perspective view of a retaining wall constructed by

Claims (1)

[Claims] 1. At the back of the wall forming part, a retaining part extending approximately perpendicularly from the wall surface forming part is provided at approximately 1/4 position of the wall width, and a fixing part having a vertical reinforcing bar hole is provided at the tip of this retaining part, and at the required part. The concrete blocks are made of longitudinal reinforcing bars and are aligned with each longitudinal reinforcing bar that stands up from the foundation along the construction surface.
They are piled up alternately in the opposite direction, and then pressurize the construction material into the space formed between each retaining part and fixed part at the back of the same wall forming part, and then add the construction surface to the rear of the L-shaped concrete block. A method for constructing a retaining wall that is integrated with an L-shaped concrete block and a buried pile, characterized by burying the pile in a horizontal direction parallel to the L-shaped concrete block, and tightening and fixing the pile with longitudinal reinforcing bars of a fixed part of the L-shaped concrete block.