JP2714775B2 - Retaining wall block with confirmation hole and grout filling method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to the construction of a retaining wall.
Hole produced in the factory to confirm the success of grout filling
And a grout filling method therefor.

[0002]

[Prior Art] Strength of built-in retaining wall block
In this case , the degree of anchoring and integration between the connecting steel and the retaining wall block is important, and if it is insufficient, the transmission of stress from the retaining wall block to the connecting steel deteriorates, and the required strength cannot be obtained. . The degree of fixing integration depends on the degree of grout filling.

In the conventional grout filling method of the retaining wall block, grout is injected from the vertical hole of the uppermost retaining wall block and spread over all the retaining wall blocks. Check the filling until the grout rises.

[0004] However, in this method, grout is uncertain whether it is filled over surely go until all retaining wall blocks, there is a possibility that unfilled portions may occur.

[0005]

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to visually check whether or not grout is surely filled in all the retaining wall blocks, and the connecting steel material and the retaining wall block are sufficiently fixed and integrated. An object of the present invention is to provide a retaining wall block with a confirmation hole that can accurately build a retaining wall having a required strength, and a grout filling method.

[0006]

The retaining wall block with a confirmation hole according to the present invention will now be described with reference to the accompanying drawings. A main body 2 is provided from the inner bottom surfaces 2a, 3a of the upper end opening 2 and the lower end opening 3, respectively.
One or a plurality of vertical holes 4 penetrating vertically through the block 1 are provided, and a confirmation hole 5 penetrating outside is provided above the inner side surface 3 b of the lower end opening 3.

In the method for grout filling the retaining wall block with the confirmation holes according to the second aspect, the upper and lower openings 3 and 3 are respectively formed in the upper and lower surfaces of the main body block 1 so as to be concave. One or more vertical holes 4 penetrating the main body block 1 vertically from the inner bottom surfaces 2a, 3a of the lower end opening 3 are provided, and a confirmation hole 5 penetrating to the outside is provided above the inner side surface 3b of the lower end opening 3. The required number of retaining wall blocks 6, 6,... Provided with confirmation holes are stacked up and down so that the vertical holes 4 overlap with each other, and the connecting steel materials 7 are inserted into the vertical holes 4 and inserted. Tensioning retaining wall block with upper and lower confirmation holes 6,6
... are connected by tightening.

[0008] The grout 8 is made of a retaining wall blow with a confirmation hole in the uppermost layer.
Tsu filled from one longitudinal hole 4 of click 6, the vertical hole 4 of each check perforated retaining wall block 6 of the intermediate layer, with each check holes of the intermediate layer retaining
Passed through a connecting space 9 lower end opening 3 and the upper opening 2 of the wall block 6, 6 to form, retaining with the lowermost confirmation holes
A space 11 formed by the lower end opening 3 of the wall block 6 and the upper surface of the foundation 10 is reached, and a lowermost retaining wall block with a confirmation hole is formed.
Check the filling of the space 11 from the confirmation hole 5 of the lower end opening 3 of the lock 6 by grout 8 leaks, the outermost lower probability
The plug 12 is fitted into the confirmation hole 5 of the retaining wall block 6 with the recognition hole and closed.

[0009] Furthermore, the bottom layer of with the confirmation hole through the space 11
The grout 8 is filled from below into all the vertical holes 4 of the retaining wall block 6, and the retaining wall block 6 with the confirmation hole at the lowermost layer and immediately above it.
In the connecting space 9 formed by the retaining wall block 6 with the confirmation hole of
The grout 8 is reached, and the retaining wall block
The grout 8 leaks from the check hole 5 of the hole to confirm that the connection space 9 is filled, and the retaining wall block with the check hole immediately above is checked.
The plug 12 is fitted into the confirmation hole 5 of 6 and closed, and the above process is repeated to fill the vertical hole 4, the connecting space 9 and the space 11 of the retaining wall block 6 with the confirmation hole of all layers.

[0010]

[Action] of grout 8 to the space 11 and the connecting space 9
The success or failure of the filling is determined by the confirmation hole 5 of the retaining wall block 6 with the confirmation hole in the lowermost layer, the confirmation hole 5 of the retaining wall block 6 with the confirmation hole in the middle layer, and the confirmation hole of the retaining wall block 6 with the confirmation hole in the uppermost layer. 5
Leakage of the grout 8 from the container enables reliable visual confirmation. This visual confirmation is performed by using the lowermost retaining wall block 6 with confirmation holes.
To the retaining wall block 6 with confirmation holes in the middle layer,
Grouting is performed sequentially to the retaining wall block 6 with perforations.
It is confirmed that 8 is distributed all over the layer.
In addition, retaining wall blocks with confirmation holes for the bottom, middle and top layers
The confirmation hole 5 of the lock 6 can also be used as a grout 8 inlet.

[0011]

EXAMPLE In the illustrated example, as the connecting steel 7, in order to improve the adhesion to the grout 8, a deformed PC rope having irregularities formed on the outer peripheral surface is used. As the grout 8, a cement paste having a low water-cement ratio and good fluidity is used.

The grout 8 is injected by forming a play space 14 between the outer surface of the positioning plate 13 for fixing the connecting steel member 7 in place and the inner surface 2b of the upper end opening 2. a groove 15 which communicates the vertical hole 4 in the bottom surface 2a provided, the clearance 14
And through the groove 15. Further, a small hole 16 in the positioning plate 13, provided at a site not concealed coupler 17 for coupling the connecting steel material 7 is injected into the vertical hole 4 through the small holes 16.

A predetermined surface is excavated to a required depth, crushed stones 18 are laid on the bottom surface and leveled, and leveling concrete 19 is poured. A foundation 10 is formed thereon, and a retaining wall block 6 having a confirmation hole is stacked on the upper surface thereof.

[0014]

As described above, according to the present invention, the stacking
In the upper part of the inner side surface 3b of each lower end opening 3 of the retaining wall block 6 with each confirmation hole to be raised , the confirmation hole 5 is penetrated to the outside.
Provided that the grout 8 leaks out from the confirmation hole 5
The space between the retaining wall block 6 with the confirmation holes and the foundation 10
11 and each retaining wall block 6 with upper and lower confirmation holes
Visual observation that grout 8 has been filled in connection space 9 between 6
This visual check can be performed from the bottom layer to the middle.
To the block 6 with the confirmation holes on the uppermost layer and the uppermost layer.
In this way, it can be easily confirmed that the grout 8 is completely spread and filled in all the layers, and the unfilled portion can be eliminated. Therefore, the fixing wall block 6 with the confirmation holes and the connecting steel 7 are fixed. The integration becomes strong, and a good retaining wall with high connection strength can be accurately constructed.

[Brief description of the drawings]

FIG. 1 is a right side view of a retaining wall using a retaining wall block with a confirmation hole according to one embodiment of the present invention.

FIG. 2 Retaining the retaining wall using the retaining wall block with the confirmation holes
It is an enlarged side view of the connection part of wall blocks .

FIG. 3 Retaining of a retaining wall using the retaining wall block having the confirmation holes.
It is an expanded longitudinal cross-sectional view of the connection part of wall blocks.

FIG. 4 shows retaining of the retaining wall using the retaining wall block having the confirmation holes.
It is an enlarged side view of the connection part of a wall block and a foundation .

FIG. 5: Retaining of a retaining wall using the retaining wall block with a confirmation hole
It is an expanded longitudinal cross-sectional view of the connection part of a wall block and a foundation.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Main body block 2 Upper end opening 2a Inner bottom surface 2b Inner side surface 3 Lower end opening 3a Inner bottom surface 3b Inner side surface 4 Vertical hole 5 Confirmation hole 6 Retaining wall block with confirmation hole 7 PC steel for connection 8 Grout 9 Connection space 10 Foundation 11 Space 12 stopper 13 positioning plate 14 play space 15 groove 16 small hole 17 coupler 18 crushed stone 19 leveling concrete

Claims (2)

(57) [Claims] 1. An upper opening 2 and a lower opening 3 which are concavely formed on an upper surface and a lower surface of a main body block 1, respectively, and a main body block 1 is formed from inner bottom surfaces 2a, 3a of the upper opening 2 and the lower opening 3. A retaining wall block with a confirmation hole provided with one or a plurality of vertical holes 4 penetrating vertically, and a confirmation hole 5 penetrating to the outside above the inner side surface 3 b of the lower end opening 3. 2. A body provided Block 1 of the upper surface and the lower surface formed concave the the top opening 2 and a lower opening 3, respectively, the main body from the inner bottom surface 2a, 3a of the top opening 2 and the lower end opening 3
One or more vertical holes 4 penetrating the block 1 up and down, and a required number of retaining wall blocks 6 with confirmation holes provided with confirmation holes 5 penetrating to the outside above the inner surface 3 b of the lower end opening 3. , 6... Are piled up and down so that the vertical holes 4 overlap, and the connecting steel 7 is inserted through the vertical holes 4, and the connecting steel 7 is tensioned to make the upper and lower retaining wall blocks 6 with confirmation holes. , 6 ・
.. is tightened and connected, and the grout 8 is filled from one vertical hole 4 of the retaining wall block 6 with the confirmation hole in the uppermost layer, and
And vertical hole 4 of each check perforated retaining wall block 6, and a connecting space 9 lower end opening 3 and the upper opening 2 of each of the intermediate layers probability <br/>認孔with retaining wall blocks 6,6 are formed After passing through, the space reaches the space 11 formed by the lower end opening 3 of the lowermost retaining wall block 6 with the confirmation hole and the upper surface of the foundation 10, and the lowermost confirmation hole is formed.
Grout 8 from the confirmation hole 5 of the lower end opening 3 of the attached retaining wall block 6 confirms the filling of the space 11 by leaking, the
A plug 1 is inserted into the confirmation hole 5 of the retaining wall block 6 having a confirmation hole in the lowermost layer.
2 fitted closed and further the lowermost through the space 11
Grout 8 on all vertical holes 4 of retaining wall block 6 with confirmation holes
Filled from below, in connection space 9 where the check perforated retaining wall block 6 of the lowermost and confirm the perforated retaining wall blocks 6 immediately thereabove form to reach the grout 8, retaining with confirmation holes on the straight
The grout 8 leaks from the confirmation hole 5 of the wall block.
The filling of the connection space 9 is confirmed, and the retaining wall with the confirmation hole immediately above
The plug 12 is fitted into the check hole 5 of the block 6 and closed, and the above process is repeated to fill the vertical hole 4, the connecting space 9 and the space 11 of the retaining wall block 6 with check holes of all layers. Grout filling method.