JP4505037B2 - Retaining wall forming block and retaining wall forming method - Google Patents

Description

  The present invention relates to a retaining wall forming block and a retaining wall forming method.

  Conventionally, on the slope of a cliff, in order to prevent landslide and bedrock collapse, a retaining wall has been formed on the slope to enhance the strength of the slope. Various methods have been devised for the formation of this retaining wall, but there is a wide range of construction methods in which a formwork is installed in front of the slope and concrete is placed between the formwork and hardened to form a retaining wall. (For example, see Patent Document 1).

JP 2001-241055 A

  However, in the conventional formation of the retaining wall, there is a problem that a long-term operation by an expert is necessary and the construction cost is increased.

  Therefore, the present inventor has made extensive use of the experience of forming the retaining wall so far, repeated research, and using a retaining wall forming block composed of a hollow basic block and a hollow rising block stacked on top of it. After installing the retaining wall forming block on the surface, a new construction method for creating a retaining wall by filling the inside of the retaining wall forming block with concrete was devised as the present invention.

That is, in the present invention according to claim 1, the retaining wall forming block is composed of a foundation block and a rising block stacked on top of the foundation block, and the foundation block forms a hollow portion for filling concrete therein. The mounting part is inclined at the top and bottom to place the rising block on the upper part, the communication hole leading to the hollow part is formed in the mounting part, and the crushed stone is placed behind the mounting part. An overhanging portion is formed to project, and a protrusion-like support body is formed in front of the overhanging portion to support the rear lower end of the rising block and to make the rising block self-supporting. a through hole is formed, the rising block, to form a hollow portion for filling the concrete therein after placing the back crushed stone to the projecting portion to form an opening in the upper leading to the hollow portion, based on the lower It decided to form an opening leading to the through hole of the block.

Moreover, in this invention which concerns on Claim 2, It is a retaining wall formation construction method using the retaining wall formation block which consists of a foundation block and the standing block piled up on the upper part, Comprising: Since a foundation block fills concrete inside Forming a hollow portion, and forming a mounting portion inclined at a front height and a rear height for mounting the rising block on the upper portion, forming a communication hole leading to the hollow portion in the mounting portion, and mounting portion An overhang is formed to place the crushed stone behind, and a protruding support is formed in front of the overhang to support the lower end of the back side of the rising block and to make the rising block self-supporting. And has a through hole in the overhang,
The rising block has a hollow part for filling concrete inside, an opening that leads to the hollow part at the top, and an opening that leads to the communication hole of the foundation block at the bottom. Then, after building up the rising block on the upper part of the foundation block, place the back crushed stone on the overhanging part of the foundation block, throw in the concrete from the opening on the upper part of the rising block, and the hollow part of the foundation block and the rising block It was decided to form a retaining wall by filling concrete.

  And in this invention, there exists an effect described below.

  That is, in the present invention, a retaining wall forming block comprising a hollow basic block and a hollow rising block stacked on top thereof is used, and after the retaining wall forming block is installed on the slope, the retaining wall forming block is provided. Since the retaining wall is formed by filling concrete inside the construction wall, the construction work can be completed in a short period of time without requiring an expert for the retaining wall formation work, and the construction cost required for the retaining wall formation Can be reduced.

FIG. 3 is a side cross-sectional view showing the retaining wall forming block according to the first embodiment. The front view. FIG. FIG. FIG. Side surface sectional drawing which shows the block for retaining wall formation concerning Example 2. FIG. The top view (a) which shows a basic block, sectional drawing (b), and a right view (c). The top view (a) which shows a rising block, a front view (b), and a right view (c). The top view (a) which shows a corner block, a front view (b), and a right view (c). The enlarged plan view which shows the connection part of a rising block and a corner block.

  Hereinafter, specific configurations of the retaining wall forming block and the retaining wall forming method according to the present invention will be described with reference to the drawings.

  As shown in FIG. 1 and FIG. 2, the retaining wall forming method according to the first embodiment is configured by installing the retaining wall forming block 1 on the slope 2 in the first embodiment, and thereafter, inside the retaining wall forming block 1. It is a construction method that fills concrete and forms retaining walls.

  The retaining wall forming block 1 used in the retaining wall forming method is composed of a concrete base block 3 and a concrete rising block 4 which is stacked in one or more stages on the upper and lower sides thereof.

  First, the specific structure of the foundation block 3 will be described. The foundation block 3 has a hollow portion 5 formed therein, a base portion 6 formed at the front end portion, and a rising block at the rear upper portion of the base portion 6. In order to mount 4, a mounting portion 7 that is inclined at a predetermined angle from front to rear and low is formed, and a penetrating communication hole 8 that communicates with the hollow portion 5 from the outside is formed in the mounting portion 7. .

  In addition, the foundation block 3 forms an overhanging portion 10 that protrudes rearward in order to place the crushed stone 9 behind the placement portion 7, and the rear of the placement portion 7 (of the overhanging portion 10. A protrusion-like support 11 for supporting the lower end of the back side of the rising block 4 is formed on the front side.

  Further, the base block 3 is formed with penetrating openings 12, 13, and 14 at the bottom (the lower portion of the mounting portion 7) and the left and right side portions, and penetrates from the hollow portion 5 to the outside at the upper portion of the overhang portion 10. A shaped air vent hole 15 is formed.

  Next, a specific structure of the rising block 4 will be described. The rising block 4 is formed in a vertically long rectangular box shape, and a hollow portion 16 is formed therein.

  The rising block 4 has an opening 17 communicating with the hollow portion 16 from the outside at the upper end portion, and an opening 18 communicating with the communication hole 8 of the foundation block 3 from the hollow portion 16 at the lower end portion.

  The retaining wall forming block 1 is configured as described above, and the foundation block 3 and the rising block 4 are the communication hole 8 of the foundation block 3 and the opening below the rising block 4 in the mounting portion 7 of the foundation block 3. Fastened with a fastener 19 composed of bolts and nuts in a state where 18 is in communication.

  The retaining wall forming block 1 is not limited to the one having the above structure, and various structures can be used without departing from the gist of the present invention.

  For example, as shown in FIG. 3, the foundation block 3 may have a structure in which the inside of the overhanging portion 10 is filled with concrete, and the base portion 6 is provided with a penetrating opening 20 that leads from the hollow portion 5 to the outside. It may be formed so that the fastener 19 can be fastened from the opening 20, or the support 21 may be extended upward and the rising block 4 may be made to stand by the support 21.

  Further, the rising block 4 may have a smooth surface by forming a recess on the surface, or may be finished in an environmental conservation type by forming the surface flat.

  Next, a retaining wall forming method using the retaining wall forming block 1 constituted by the foundation block 3 and the rising block 4 will be described.

  In the retaining wall formation method, first, the foundation crushed stone 23 is laid on the upper part of the ground 22 in front of the slope 2 and the upper surface is flattened, and then the foundation blocks 3 are arranged side by side on the upper part of the foundation crushed stone 23. Install.

  Next, the rising block 4 is placed on the upper portion of the placement portion 7 of the basic block 3. At that time, the rising block 4 can be easily placed at a predetermined position of the mounting portion 7 of the foundation block 3 by bringing the lower end of the back side of the rising block 4 into contact with the support 11 formed on the upper part of the foundation block 3. can do.

  As described above, the support 11 formed on the foundation block 3 can be used as a guide when placing the rising block 4 on the upper portion of the foundation block 3, and after placing the rising block 4 on the upper portion of the foundation block 3. It has a function of supporting the lower end of the back side of the rising block 4.

  When the rising block 4 is placed at a predetermined position of the placing portion 7 of the foundation block 3, the communication hole 8 of the foundation block 3 and the opening 18 below the rising block 4 are in communication with each other. 19 is used to fasten the basic block 3 and the rising block 4. Adjacent rising blocks 4 are connected by a connector 24.

  Next, the crushed stone 9 is put into a space formed by the front surface of the slope 2, the upper surface of the overhanging portion 10 of the foundation block 3, and the rear surface of the rising block 4, and is pressed. In addition, a small mouth stopper block is installed at the left and right ends.

  Thus, since the overhang | projection part 10 projected behind the base block 3 is formed and the back crushed stone 9 is mounted in the upper part of the overhang | projection part 10, the base block 3 can be stabilized.

  Next, concrete is cast from the upper opening 17 of the rising block 4 toward the hollow portion 16. As a result, the concrete is introduced into the hollow portion 16 from the upper opening 17 of the rising block 4, passes through the lower opening 18 of the rising block 4 and the communication hole 8 of the foundation block 3, and enters the hollow portion 5 of the foundation block 3. The hollow portion 5 of the basic block 3 and the hollow portion 16 of the rising block 4 are finally filled. At this time, since the air vent hole 15 is formed on the upper surface of the foundation block 3, the internal air is discharged well from the air vent hole 15.

  And the retaining wall can be formed in the front surface of the slope 2 by curing until the concrete with which the hollow part 5 of the foundation block 3 and the hollow part 16 of the rising block 4 were solidified.

  In addition, in the retaining wall forming method, when the ground 22 is inclined upward or downward, the foundation block 3 is installed in an inclined state, and as shown in FIG. The rising block 4 is vertically mounted on the upper part of the inclined base block 3 using a fastener 26 provided with an inner threaded sheath 25 which is screwed onto the bolt. In this case, a gap formed between the basic block 3 and the rising block 4 is covered with the mold 27.

  Further, in the retaining wall forming method, when the slope 2 is curved forward or backward, a gap is formed between the adjacent rising blocks 4, but it is adjacent as shown in FIG. A T-shaped jig 28 is inserted between the rising blocks 4 and rotated by 90 degrees. A stopper 29 is screwed onto the tip of the jig 28, and the mold 31 is attached to the rising block 4 with a wedge 30 provided on the stopper 29. The mold 31 is fixed by urging the mold 31, and then concrete is placed between the adjacent rising block 4 and the mold 31, and after the concrete is solidified, the stopper 29 is removed and the mold 31 is removed. What should I do?

  As described above, in the retaining wall forming method, the retaining wall forming block 1 including the hollow basic block 3 and the hollow rising block 4 stacked on top of the hollow base block 3 is installed on the slope 2, and then Since the inside of the wall forming block 1 is filled with concrete to form a retaining wall, a retaining wall can be completed in a short period of time without requiring a skilled person for retaining wall forming work. The construction cost required for formation can be reduced.

  In the retaining wall forming method according to the second embodiment, as shown in FIG. 6, the retaining wall forming block 32 according to the second embodiment is installed on the slope 33, and then concrete is placed inside the retaining wall forming block 32. It is a method of filling to form a retaining wall.

  The retaining wall forming block 32 used in this retaining wall forming method is composed of a concrete base block 34 and a concrete rising block 35 which is stacked in one or more stages on the upper and lower sides thereof.

  First, the specific structure of the foundation block 34 will be described. As shown in FIG. 7, the foundation block 34 has a hollow portion 36 formed therein and a base portion 37 formed at the front end portion. In order to place the rising block 35 on the rear upper part of 37, a mounting part 38 that is inclined at a predetermined angle from front to rear and low is formed, and a pair of left and right penetrations that lead from the outside to the hollow part 36 are formed in the mounting part 38 A continuous communication hole 39 is formed.

  Further, the foundation block 34 forms an overhanging portion 41 projecting rearward in order to place the back crushed stone 40 behind the placement portion 38, and behind the placement portion 38 (the overhanging portion 41). A protrusion-like support body 42 is formed for supporting the lower end of the rear side of the rising block 35.

  In addition, the base block 34 has through-holes 43, 44, and 45 formed in the bottom (the lower portion of the mounting portion 38) and the left and right side portions, and through-holes are formed in the overhanging portion 41 for weight reduction. 46 is formed.

  Further, the base block 34 is provided with an anchor plug 47 at a position below each communication hole 39 so that the base block 34 and the rising block 35 can be connected by a connecting plate 48 and a bolt 49 as shown in FIG. .

  Next, the specific structure of the rising block 35 will be described. As shown in FIG. 8, the rising block 35 is formed in a vertically long rectangular box shape and has a hollow portion 50 formed therein.

  Further, the rising block 35 has an opening 51 communicating with the hollow portion 50 from the outside at the upper end portion, and an opening 52 communicating with the communication hole 39 of the foundation block 34 from the hollow portion 50 at the lower end portion.

  Further, the rising block 35 forms a guide convex portion 53 for alignment at the upper rear portion of the upper end, and forms a guide concave portion 54 that engages with the guide convex portion 53 at the lower rear portion, thereby positioning the upper and lower rising blocks 35. It can be easily adjusted.

  Further, the rising block 35 is formed with a pin insertion groove 55 for connection at the upper left and right ends so that the left and right rising blocks 35 can be easily connected, and a notch 56 is formed at the lower left and right ends. Easy to move from side to side.

  The rising block 35 has anchor plugs 57 attached to the inside and outside of the openings 51 and 52 so that the foundation block 34 and the rising block 35 and the upper and lower rising blocks 35 can be connected.

  Further, the rising block 35 has an insertion hole 58 having a rectangular cross section at required positions on the left and right side walls and the upper end surface.

  The retaining wall forming block 32 is configured as described above, and the foundation block 34 and the rising block 35 are the communication hole 39 of the foundation block 34 and the opening below the rising block 35 in the mounting portion 38 of the foundation block 34. Stacked with 52 in communication.

  The retaining wall forming block 32 is not limited to the one having the above structure, and various structures can be used without departing from the gist of the present invention.

  For example, in the retaining wall forming block 32 having the above-described structure, a plurality of (two in this case) rising blocks 35 are placed on the top of one foundation block 34, but one foundation block 34 is provided. It is also possible to place a structure in which two rising blocks 35 are integrally formed on the upper part of the head.

  Further, a corner block 59 shown in FIG. 9 may be used in a portion where the slope 33 is curved forward or backward.

  The corner block 59 is formed by removing the left and right side walls of the rising block 35 and connecting the front and rear side walls at the central portion so that the left and right width of the rear wall is shorter than the left and right width of the front wall.

  The specific structure of the corner block 59 will be described. As shown in FIG. 9, the corner block 59 has a rectangular plate-like front wall 60 and rear wall 61 connected by a connecting body 62 at the center, A hollow portion 63 is formed.

  The corner block 59 has an opening 64 communicating with the hollow portion 63 from the outside at the upper end portion, and an opening 65 communicating with the communication hole 39 of the foundation block 34 from the hollow portion 63 at the lower end portion.

  In addition, the corner block 59 has a guide convex portion 66 for alignment at the upper rear portion and a guide concave portion 67 that engages with the guide convex portion 66 at the lower rear portion, so that the upper and lower corner blocks 59 are positioned. It can be easily adjusted.

  In addition, the corner block 59 has anchor plugs 68 attached to the inside and outside of the openings 64 and 65 so that the foundation block 34 and the corner block 59 and the upper and lower corner blocks 59 can be connected.

  Further, the corner block 59 has an insertion hole 69 having a rectangular cross section at required positions on the left and right side walls and the upper end surface.

  Next, a retaining wall forming method using the retaining wall forming block 32 constituted by the foundation block 34 and the rising block 35 will be described.

  In the retaining wall formation method, first, the foundation crushed stone 71 is laid on the upper part of the ground 70 in front of the slope 33, and the upper surface is rolled so that the upper surface is flat, and then the foundation blocks 34 are arranged side by side on the upper part of the foundation crushed stone 71. Install.

  Next, the rising block 35 is placed on top of the placement portion 38 of the basic block 34. At that time, the rising block 35 can be easily placed at a predetermined position of the placing portion 38 of the foundation block 34 by bringing the lower end of the back side of the rising block 35 into contact with the support 42 formed on the upper portion of the foundation block 34. can do.

  Thus, the support 42 formed on the foundation block 34 can be used as a guide when placing the rising block 35 on the upper part of the foundation block 34, and after placing the rising block 35 on the upper part of the foundation block 34, It has a function of supporting the lower end of the rear side of the rising block 35.

  When the rising block 35 is placed at a predetermined position of the mounting portion 38 of the foundation block 34, the communication hole 39 of the foundation block 34 and the opening 52 below the rising block 35 are in communication with each other. 48 is used to connect the basic block 34 and the rising block 35.

  Next, the crushed stone 40 is put into a space formed by the front surface of the slope 33, the upper surface of the overhanging portion 41 of the foundation block 34, and the rear surface of the rising block 35, and is rolled. In addition, a small mouth stopper block is installed at the left and right ends.

  In this way, the overhanging portion 41 is formed projecting behind the foundation block 34, and the back crushed stone 40 is placed on the upper portion of the overhanging portion 41. Therefore, the foundation block 34 can be stabilized.

  Next, concrete is placed from the upper opening 51 of the rising block 35 toward the hollow portion 50. Thus, the concrete is introduced into the hollow portion 50 from the upper opening 51 of the rising block 35, passes through the lower opening 52 of the rising block 35 and the communication hole 39 of the foundation block 34, and enters the hollow portion 36 of the foundation block 34. The hollow portion 36 of the basic block 34 and the hollow portion 50 of the rising block 35 are finally filled.

  The retaining wall can be formed on the front surface of the slope 33 by curing until the concrete filled in the hollow portion 36 of the foundation block 34 and the hollow portion 50 of the rising block 35 is hardened.

  Further, in the retaining wall forming method, when the slope 33 is curved forward or backward, as shown in FIG. 10, a corner block 59 is arranged next to the rising block 35, and the rising block 35 and the corner are A gap between the block 59 and the block 59 is closed with a mold 72.

  Here, the formwork 72 is fixed using a jig 73 that can be bent. This jig 73 has a connecting portion 75 rotatably mounted on an L-shaped base end portion 74 having a rectangular cross section to be inserted into the insertion holes 58 and 69, and a bolt portion 76 is fastened to the connecting portion 75. The bolt 72 is inserted into the mold 72 and fastened with a nut 77 so that the mold 72 is fixed.

  As described above, in the retaining wall forming method, the retaining wall forming block 32 including the hollow basic block 34 and the hollow rising block 35 stacked on the upper part is installed on the slope 33, and then the retaining wall is formed. Because the inside of the wall forming block 32 is filled with concrete to form a retaining wall, an expert is not required for the retaining wall forming work, and the construction work can be completed in a short period of time. The construction cost required for formation can be reduced.

DESCRIPTION OF SYMBOLS 1 Retaining wall formation block 2 Slope 3 Base block 4 Standing block 5 Hollow part 6 Base part 7 Mounting part 8 Communication hole 9 Back crushed stone 10 Overhang part
11 Support 12,13,14 Opening
15 Air vent hole 16 Hollow part
17 opening 18 opening
19 Fastener 20 Opening
21 Support 22 Ground
23 Basic crushed stone 24
25 Inner threaded sheath 桿 26 Fastener
27 Formwork 28 Jig
29 Stop 30 Wedge
31 Formwork 32 Retaining wall forming block
33 slope 34 foundation block
35 Rise block 36 Hollow part
37 Base 38 Placement
39 Communication hole 40
41 Overhang 42 Support
43, 44, 45 Opening 46 Through hole
47 Anchor plug 48 Connecting plate
49 bolt 50 hollow
51 opening 52 opening
53 Guide protrusion 54 Guide recess
55 Pin insertion slot 56 Notch
57 Anchor plug 58 Insertion hole
59 Corner block 60 Front wall
61 Rear wall 62 Connected body
63 Hollow part 64 Opening
65 Opening 66 Guide convex
67 Guide recess 68 Anchor plug
69 Insertion hole 70 Ground
71 Basic crushed stone 72 Formwork
73 Jig 74 Base end
75 Connecting part 76 Bolt part
77 Nut

Claims (2)

A retaining wall forming block consisting of a foundation block and a rising block stacked on top of the foundation block,
The foundation block forms a hollow part for filling the inside with concrete, and forms a placing part inclined at a front height and a rear for placing the rising block on the upper part, and the placing part has a hollow part. A communication hole that leads to the surface, a projecting part that overhangs to place the back crushed stone is formed behind the mounting part, and the rising block is supported in front of the projecting part while supporting the lower end of the rear side of the rising block. While forming a protruding support for self-supporting, forming a through hole in the overhang,
The rising block forms a hollow part for filling concrete inside after placing the crushed stone on the overhang part, forms an opening leading to the hollow part in the upper part, and communicates with the communication hole of the basic block in the lower part Retaining wall forming block characterized by forming an opening. A retaining wall forming method using a retaining wall forming block consisting of a foundation block and a rising block stacked on top of the foundation block,
The foundation block forms a hollow part for filling the inside with concrete, and forms a placing part inclined at a front height and a rear for placing the rising block on the upper part, and the placing part has a hollow part. A communication hole that leads to the surface, a projecting part that overhangs to place the back crushed stone is formed behind the mounting part, and the rising block is supported in front of the projecting part while supporting the lower end of the rear side of the rising block. A projecting support for self-supporting is formed, and a through hole is formed in the overhang,
The rising block forms a hollow part for filling concrete inside, forms an opening leading to the hollow part in the upper part, and forms an opening leading to the communication hole of the basic block in the lower part,
After installing the foundation block and then stacking the rising block on the upper part of the foundation block, placing the crushed stone on the overhanging part of the foundation block, putting the concrete through the opening at the upper part of the rising block, and the foundation block and rising Retaining wall forming method characterized in that the hollow part of the block is filled with concrete to form a retaining wall.

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