JP2829626B2 - Structure of concrete block and method of stacking concrete block on slope - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a structure of concrete blocks stacked and installed on a rock cutting surface and a construction method of sequentially stacking and installing the concrete blocks.

(Prior Art) Conventionally, in order to prevent collapse of a rock cut slope and to improve the appearance of the cut face, concrete blocks are stacked and installed on the slope, or concrete is sprayed on the slope. Or fixed.

(Problems to be Solved by the Invention) However, in the conventional method of stacking concrete blocks, it is difficult to determine the gradient of the concrete blocks, and it is also difficult to position the stack.

Therefore, an object of the present invention is to improve the workability of concrete blocks by stacking concrete blocks so that the gradient can be easily determined and the positioning of the stack can be easily performed.

(Means for Solving the Problems) It is a feature of the present invention to provide the following structure of a concrete block and a method of installing and installing the concrete block.

A flat concrete block stacked and installed along the slope, inserts for fixing bolts provided respectively above and below the concrete block and screwing the fixing bolt to fix the steel material, and an upper surface of the concrete block and A guide pin hole provided on the lower surface for positioning and placing the upper and lower concrete blocks by inserting guide pins, and a detachable concave steel provided on the upper surface of the concrete block, and a gradient adjusting screw is screwed therein. A concrete block and an anchor provided on the back surface of the concrete block for fixing the concrete block to the slope, and the concrete blocks are stacked and installed along the slope.

A concrete block construction method in which the concrete blocks are stacked and installed on a slope by the following steps.

I. Install the foundation block on the flat ground below the slope and fix it.

B. The lower surface of the first-stage concrete block is fitted into the fitting groove of the base block, and the concrete block is adjusted to have a predetermined gradient by rotating a gradient adjusting screw screwed into a nut provided on the concave steel. I do.

C. The anchor installed on the back of the concrete block and the anchor installed on the slope are connected and fixed.

D. Remove the concave steel.

E. Pour back concrete between the concrete block and the slope.

F. Screw the steel material into the upper and lower inserts with fixing bolts on the second-stage concrete block, position it on the upper surface of the first-stage concrete block, and attach the guide pins provided on the first-stage concrete block. It is positioned and mounted by being inserted into guide pin insertion holes formed in the second stage concrete block.

G. The second level concrete block is adjusted to have a predetermined gradient by rotating a gradient adjusting screw screwed into a nut provided on the concave steel.

H. A fixing bolt is attached through the steel material, and the fixing bolt is screwed into the upper and lower inserts of the first concrete block.

Reconnect and fix the anchor provided on the second-stage concrete block with the anchor installed on the slope.

Nu. Remove the concave steel and steel material.

Le. Pour back concrete between the 2nd concrete block and the slope.

ヲ. The installation is completed by repeating the step of installing the second concrete block for a predetermined number of steps.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a sectional view showing an installation state of a first-stage concrete block.

Referring to the figure, first, a basic block 1 is installed. The base block 1 has a through hole 2 and a fitting groove 3 in which a concrete block described later is placed. The base block 1 is accurately positioned and installed on the laying mortar 4 for installation, and the reinforcing bar 5 is embedded in the ground through the through hole 2 to fix the base block 1. Thereafter, mortar is injected into the through-hole 2 to fix the reinforcing bar 5 to the base block 1.

Then fitting the concrete block ₆₁ of each stage to the insertion groove 3 of base block 1. Concrete block ₆₁ is one or more inserts ₇₁ upward and downward. Further, concave steel ₈₁ is installed on the upper surface of the concrete block _61. Recessed steel 8 ₁ is intended to be removed after the concrete block ₆₁ is fixed, the upper surface of the concrete block ₆₁ after the concave-section steel 8 ₁ is removed guide pin
9 ₁ is provided. Further, the nut 10 is at the top of the concave Steel 8 _1
1 is fixed, the slope adjusting screw 11 ₁ for the nut 10 ₁ is screwed. Here, concave steel 8 ₁ can be omitted. In this case, since must fixedly mounted a nut 10 ₁ gradient adjusting screw 11 ₁ is screwed to the upper surface of the concrete block _61, it is desirable that the said nut 10 _first guide pin combined. Anchor on the back of the concrete block 6 ₁
12 ₁ is provided by a predetermined number.

First stage of the concrete block ₆₁ is fitted placed lifted by a crane, not shown in the insertion groove 3 of base block 1.

Thereafter, the slope adjusting screw 11 ₁ is rotated to adjust the concrete block ₆₁ in a predetermined slope.

After adjusting the slope and welding and fixing the anchor 13 embedded in the anchor ₁₂₁ and the slope face by rebar 14 _1.

When concrete block ₆₁ is fully seated, remove the concave steel 8 _1, further pouring the Urakomi concrete 15 between the concrete block ₆₁ and slopes.

After the lapse of a predetermined time (usually about 24 hours) the Urakomi concrete 15 reaches with sufficient strength, the concrete blocks 6 ₂ of the second stage in the following steps first stage concrete block 6 Work to put on top of ₁ .

With reference to Figure 2, first, to secure the rectangular steel 16 in the concrete block 6 ₂ of the second stage at level ground. The fixing is performed by screwing the mounting bolt 17 at the top and bottom of the insert 7 _2. The length of square steel 16 is the second stage concrete block
Concrete blocks 6 ₁ 6 ₂ height and the first stage has a height total height. In addition, the square steel 16 makes a straight line, and at the same time the first stage and
This is a structure for preventing the swelling of the seam of the step.

Then, lifting the concrete blocks 6 ₂ with the angular type steel 16 is installed in a crane, placed on the top surface of the concrete blocks ₆₁ of the first stage, the guide pin provided on the first stage of the concrete blocks ₆₁ 9 ₁ is fitted into the guide pin holes 18 ₂ provided on the lower surface of the concrete block 6 ₂ of the second stage. Although the guide pin hole 18 ₂ is not required in the first stage of the concrete block _61, to the concrete block and standard products, it may be placed by installing the guide pin holes. The guide pin 9 ₁ is simply positioned by fitting the guide pin holes 18 _2. And 2
Gradient adjusting screw 11 ₂ concrete blocks 6 ₂ -th stage is rotated with a predetermined slope, then taken up bolts 17 and the concrete block ₆₁ with rectangular steel 16 by threaded into the insert 7 ₁ 1-stage bound fixed, to secure the second stage of the concrete blocks 6 ₂ in a predetermined slope. And anchor 12 ₂
A slope anchors 13 embedded in the slope to weld fixed by rebar 14 _2. Thus, the firm of the second stage of the concrete block 6 ₂ fixed and slope can be precisely adjusted.

When fixing work of concrete blocks 6 ₂ of the second stage is completed, the pouring the Urakomi concrete between the concrete block 6 ₂ and slope.

When pouring the Urakomi concrete is completed, the second stage of construction of the concrete block 6 ₂ ends by removing the concave steel ₈₂ and rectangular steel 16.

Since the setting of the concrete blocks in the third and subsequent steps is the same as the setting of the concrete blocks in the second step, 3
The description of the construction after the step is omitted.

The above is one embodiment of the present invention, and the present invention is not limited to the above embodiment.

For example, the number of inserts is appropriately selected and adopted depending on the size of the concrete block.

Similarly, the number of anchors is also appropriately selected and adopted depending on the size of the concrete block.

The connection and fixation of the anchors is not limited to the connection and fixation by welding the illustrated rebar, and for example, a structure of connecting and fixing with a steel wire can also be used.

(Effects of the Invention) As described above, according to the present invention, the construction process is simplified and the working efficiency is improved.

In addition, positioning is simplified, and construction accuracy is improved.

[Brief description of the drawings]

1 is a sectional view showing a state where a first-stage concrete block is installed, FIG. 2 is a front view of the concrete block in FIG. 1, and FIG. 3 is a sectional view showing an installed state of a second-stage concrete block. It is. 1: Basic Block 2: through hole, 3: fitting grooves 4: laying mortar, 5: reinforcing bar 6 _1, 6 _2: Concrete blocks 7 _1, 7 _2: insert, 8 _1, 8 _2: Recessed Steel 9 _1: Guide Pin, 10 ₁ : Nut 11 ₁ , 11 ₂ : Slope adjusting screw 12 ₁ , 12 ₂ : Anchor, 13: Anchor 14 ₁ , 14 ₂ : Reinforcing bar, 15: Backfill concrete 16: Square steel, 17: Mounting bolt 18 ₂ : Guide pin hole

Claims (2)

(57) [Claims] 1. A flat concrete block which is stacked and installed along a slope, and inserts for fixing bolts which are respectively provided above and below the concrete block and which are screwed with fixing bolts to fix steel. Guide pin holes provided on the upper and lower surfaces of the concrete block for positioning and placing the upper and lower concrete blocks by inserting guide pins, and provided on a removable concave steel provided on the upper surface of the concrete block, A concrete block structure comprising: a nut into which an adjusting screw is screwed; and an anchor provided on a back surface of the concrete block and fixing the concrete block to a slope, wherein the concrete block is stacked and installed along the slope. . 2. The concrete block construction method according to claim 1, wherein the concrete blocks are stacked and installed on a slope. I. Install the foundation block on the flat ground below the slope and fix it. B. The lower surface of the first-stage concrete block is fitted into the fitting groove of the base block, and the concrete block is adjusted to have a predetermined gradient by rotating a gradient adjusting screw screwed into a nut provided on the concave steel. I do. C. The anchor installed on the back of the concrete block and the anchor installed on the slope are connected and fixed. D. Remove the concave steel. E. Pour back concrete between the concrete block and the slope. F. Screw the steel material into the upper and lower inserts with fixing bolts on the second-stage concrete block, position it on the upper surface of the first-stage concrete block, and attach the guide pins provided on the first-stage concrete block. It is positioned and mounted by being inserted into guide pin insertion holes formed in the second stage concrete block. G. The second level concrete block is adjusted to have a predetermined gradient by rotating a gradient adjusting screw screwed into a nut provided on the concave steel. H. A fixing bolt is attached through the steel material, and the fixing bolt is screwed into the upper and lower inserts of the first concrete block. Reconnect and fix the anchor provided on the second-stage concrete block with the anchor installed on the slope. Nu. Remove the concave steel and steel material. Le. Pour back concrete between the 2nd concrete block and the slope.ヲ. The installation is completed by repeating the step of installing the second concrete block for a predetermined number of steps.