JP2017227097A - Large laying block for retaining wall - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a large laying block for a retaining wall to be constructed from deforming or cracking even if external force such as large inertia force of earthquake is applied on a slope such as a bank protection constructed by assembling the large laying blocks for the retaining wall or a slope face, and strengthen the slope.SOLUTION: A large laying block for a retaining wall comprises: a front wall board 2 which has four oblique side parts 4 and corners located at upper, lower, right and left ends of the oblique side part and rhomboid shape in front view; and four secondary legs 3 which are formed so as to protrude backward on a rear face of the front wall board 2. Four secondary legs 3 are disposed at an intermediate part of each oblique side part 4 of the front wall board 2. When large laying blocks 1 are assembled by being piled up in the form of a valley, four secondary legs 3 engage with the secondary legs 3 of other adjacent large laying blocks 1.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a large-sized stacking block for retaining walls that is built up on a slope and protects the slope on a slope such as a river or coastal revetment, a road slope, a railway slope, or a slope of a residential land development site. In particular, the present invention relates to a large building block for a retaining wall that can make the slope strong when the large building block for a retaining wall is assembled on a slope.

16 is a front view of a conventional large-sized stacking block for retaining walls, FIG. 17 is a plan view of a conventional large-sized stacking block for retaining walls, and FIG. 18 is a side view of a conventional large-sized stacking block for retaining walls.
As shown in FIGS. 16 to 18, the conventional large-sized retaining block 31 for retaining walls has two rectangular front wall plates 32 that are horizontally long when viewed from the front, and two rear walls 31 that protrude rearward on the rear surface of the front wall plates 32. It consists of a holding leg 33. The two holding legs 33 are provided in a symmetrical position on the rear surface of the front wall plate 32. Further, the two holding legs 33 are long in the vertical direction, the vertical dimension thereof is the same as the vertical dimension of the front wall plate 32, and is formed in a shape extending obliquely upward toward the rear.

  Further, when the retaining leg 33 is provided with the convex protrusion 34 on the upper surface and the concave depression 35 on the lower surface, the depression 35 provided on the lower surface is lowered when the large-sized stacking block 31 for retaining walls is assembled. It is made to fit in the projection part 34 provided in the upper surface of the retaining leg 33 of the other large building block 31 for retaining walls located in this.

  The retaining wall large building block 31 is constructed by assembling obliquely upward along the slope on a slope such as a revetment or slope.

FIG. 19 is a front view when a conventional large-sized stacking block for retaining walls is constructed, and FIG. 20 is a cross-sectional view seen from the side when a conventional large-sized stacked block for retaining walls is constructed.
As shown in FIGS. 19 and 20, the first-stage retaining wall large stack blocks 31 are stacked side by side in the horizontal direction on the foundation concrete 36 laid at the lower end of the slope. In addition, when the large retaining block 31 for retaining walls is stacked, a space is left behind the large retaining block 31 for retaining walls. After completing the loading of the first large retaining block 31 for the retaining wall, the back space 37 is filled in the space behind the large retaining block 31 for the retaining wall, the backfilling concrete 38 is filled, and the large retaining block for the retaining wall is filled. The inside concrete 31 is filled with the containment concrete 39, and the first-stage large-sized retaining block 31 for the retaining wall is assembled on the foundation concrete 36.

  On the first stage retaining wall large stacking block 31, the second stage retaining wall large stacking blocks 31 are stacked side by side in the horizontal direction. At this time, the large retaining block 31 for the second retaining wall is shifted from the first retaining block 31 for the first retaining wall by half of the lateral width of the front wall plate 32 of the retaining block 31 for retaining walls. It piles so that it may straddle the two large-sized stacking blocks 31 for retaining walls of the 1st step. In addition, the two retaining legs 33 provided behind the front wall plate 32 are respectively placed on one retaining leg 33 of the two large retaining blocks 31 for retaining walls in the first stage, and are provided on the lower surface of the retaining leg 33. The part 35 fits into a protrusion 34 provided on the upper surface of the retaining leg 33 of the large retaining block 31 for retaining walls in the first stage. When the second-stage retaining wall large stacking block 31 has been stacked, the backfilling material 37 is placed in the space behind the second-stage retaining wall large stacking block 31 in the same manner as the first-stage retaining wall large stacking block 31. Is filled with backfill concrete 38, and inside of the large retaining block 31 for retaining walls is filled with body concrete 39, and the second retaining layer is placed on the first retaining block 31 for retaining walls. Assemble a large building block 31 for walls.

  The third stage retaining wall large stacking block 31 is placed on the second stage retaining wall large stacking block 31, and then the fourth stage retaining wall large stacking block 31 is disposed on the first stage and second stage retaining blocks. It is assembled in the same way as the large wall building block 31. For example, the large building blocks 31 for retaining walls are assembled up to the sixth and seventh stages. After the assembly, the ceiling concrete 40 is provided on the large-sized stacking block 31 for retaining walls. Thereby, on the slope such as a revetment or a slope, a large number of large retaining blocks 31 for retaining walls can be stacked up and down in a plurality of stages and assembled along the slope.

  However, when the conventional large retaining block 31 for retaining walls is assembled on a slope such as a revetment or a slope, the first and second steps of the retaining wall large retaining block 31 positioned above and below are constructed. The joints of the large retaining blocks 31 for the retaining wall located above and below the joints or the second and third joints or the third and fourth joints are straight in the horizontal direction, and the joints In the slope constructed by assembling the large retaining block 31 for retaining walls, it extends in a straight line across the entire length of the left and right sides.

  For example, when a large-scale earthquake occurs, an external force such as a large inertial force of the earthquake acts on the large retaining block 31 for retaining walls that is assembled and constructed on a slope. However, in this case, the large retaining block 31 for retaining walls stacked in a plurality of stages in the vertical direction has joints of the large retaining blocks 31 for retaining walls positioned vertically in the left and right lateral directions and the left and right overall length of the slope. It extends in a straight line across. For this reason, the resistance force against the acting external force is reduced. As a result, cracks start at the joints of the retaining wall large stacking blocks 31 positioned above and below, and deformation and cracking occur in the retaining wall large stacking blocks 31 built on the slope.

  FIG. 21 is an explanatory view showing a state when an external force is applied to the conventional built-up large building block for retaining walls, and FIG. 22 shows a state when a crack has occurred in the conventional built-up large building block for retaining walls. FIG. 23 is an explanatory view showing a state when an external force is applied to a conventional built-up large building block for retaining walls, and FIG. 24 is a crack in the conventional built-up large building block for retaining walls. It is explanatory drawing which shows the state at the time.

  When an external force such as a large inertial force of an earthquake acts, as shown in FIG. 21 (a), a compressive stress is generated inside the large retaining block 31 for retaining wall constructed and assembled, and a tensile stress is generated outside thereof. Then, the crack C starts from the outside of the retaining wall large stack block 31, and as shown in FIG. 22, the crack C occurs at the joints of the retaining wall large stack block 31 located above and below. Conversely, as shown in FIG. 21 (b), when tensile stress is generated inside the retaining wall large stack block 31 assembled and constructed, and compressive stress is generated outside it, the retaining wall large stack block 31 is formed. Cracks C start from the inside, and as shown in FIG. 22, cracks C occur at the joints of the large retaining blocks 31 for retaining walls positioned above and below.

  In addition, in the large retaining block 31 for retaining walls located on the left and right, the resistance force against the acting external force is slightly increased by stacking the large retaining blocks 31 for retaining wall in a staggered manner. However, since the joints of the large retaining blocks 31 for the retaining wall located on the left and right are linear in the vertical direction, as shown in FIG. When compressive stress is generated inside the block 31 and tensile stress is generated outside the block 31, cracks C start from the outside of the large retaining block 31 for retaining walls, and as shown in FIG. When a tensile stress is generated inside the stacking block 31 and a compressive stress is generated outside the stacking block 31, a crack C starts from the inside of the large retaining block 31 for retaining walls. For this reason, as shown in FIG. 24, the crack C linearly occurs in the vertical direction in the vertical direction at the joints of the large retaining blocks 31 for retaining walls located on the left and right.

  The present invention has been made in view of such problems. The purpose of the present invention is on a slope such as a revetment or a slope constructed by assembling large retaining blocks for retaining walls. Even if the external force acts, it is possible to prevent deformation and cracking in the large retaining block for retaining walls to be constructed and to strengthen the slope.

  The first invention is provided with four oblique sides, with the corners positioned at the top and bottom and left and right ends, respectively, so that the front view protrudes backward from the rhomboid front wall plate and the rear surface of the front wall plate When the four retaining legs are assembled by placing the large retaining blocks for retaining walls in a valley, each of the four retaining legs is assembled. This is a large building block for retaining walls that is combined with a holding foot of another adjacent large retaining block for retaining walls.

  According to a second invention, in the first invention, the retaining leg has a quadrangular columnar shape having four oblique side portions, and each corner is positioned at each of the upper and lower ends and the left and right ends. When assembled in a valley, the side wall of the retaining leg is a large retaining block for retaining walls that is diagonally opposed to one side surface of the retaining leg of another retaining wall large block adjacent to the retaining wall.

  3rd invention is a large-sized stacking block for retaining walls which provides a horizontal part in the intermediate | middle of the direction in which a retaining leg protrudes in 1st or 2nd invention.

  According to a fourth aspect of the present invention, in the third aspect, when stepped portions are formed on both sides of the horizontal portion of the retaining leg, and the large stacking block for retaining walls is assembled in a valley, the stepped portions formed on both sides of the horizontal portion are This is a large building block for retaining walls that meshes with a horizontal portion of a retaining leg of another adjacent large retaining block for retaining walls in the protruding direction of the retaining leg.

  A fifth invention is a retaining wall large stacking block according to any one of the first to fourth inventions, wherein horizontal portions are provided at upper and lower corners of the front wall plate.

  A sixth invention is the fifth invention, wherein in the fifth invention, a hole is provided in the horizontal portion of the front wall plate so that the guide pin can be inserted, and when the large-sized stacking block for retaining walls is assembled in a valley, the hole in the horizontal portion It is a large-sized stacking block for retaining walls that inserts and positions a guide pin over the horizontal hole of the front wall plate of the large-sized stacked block for retaining walls positioned above and below.

  According to a seventh invention, in the fifth or sixth invention, the horizontal portion of the front wall plate is formed in a protruding shape, and concave and recessed cutout portions are provided at the left and right corners of the front wall plate. When a large building block for retaining walls is assembled in valleys, it is a large building block for retaining walls that fits into the notch of the front wall plate of the other large retaining wall block that the horizontal portion of the front wall plate is adjacent to. is there.

  According to the present invention, the four oblique sides of the front wall plate of the large retaining block for retaining walls are combined with the oblique portion of the front wall plate of another adjacent large retaining block for retaining walls, thereby assembling and constructing the retaining wall. The joints of the large building blocks do not extend straight and straight in the horizontal direction on the left and right, but have a triangular waveform that allows alternating peaks and valleys. Along with this, the length of the joint becomes longer, so that when an external force such as a large inertial force of an earthquake is applied, a resistance force against the external force is increased. In addition, by combining the four retaining legs on the rear side of the front wall plate with the retaining legs of the other large retaining blocks for retaining walls that are adjacent to each other, the retaining legs also have a large resistance against an external force such as a large inertial force of an earthquake. Resistance is generated. As a result, adjacent large retaining blocks for retaining walls can be firmly joined to each other, and cracks start at the joints of retaining blocks for retaining walls, preventing deformation and cracks from occurring in the large retaining blocks for retaining walls to be constructed. The slope can be made strong.

  In addition, a horizontal part is provided on the retaining leg of the large retaining block for retaining walls, and a horizontal part is provided at the upper and lower corners of the front wall plate of the retaining block for large retaining walls. When assembling, the horizontal part provided on the retaining leg and the horizontal part provided on the front wall plate allow the large retaining block for the retaining wall on the upper stage to be stacked in the correct posture horizontally on the large building block for the retaining wall on the lower stage. . Moreover, since this work is an extremely simple work that is simply carried, the workability during construction can be improved.

  In addition, when a step is formed on both sides of the horizontal portion of the retaining leg and the large building block for retaining walls is assembled in a valley, the large building block for other retaining walls adjacent to the step formed on both sides of the horizontal portion is assembled. By meshing with the horizontal portion of the retaining leg in the direction in which the retaining leg protrudes, it is possible to eliminate the back-and-forth movement of adjacent large retaining blocks for retaining walls. This also makes it possible to firmly join adjacent large retaining blocks for retaining walls, prevent deformation and cracks from occurring in the large retaining blocks for retaining walls to be constructed, and strengthen the slope.

  Furthermore, a hole is provided in the horizontal portion provided at the upper and lower corners of the front wall plate, and a guide pin is inserted and positioned over the hole portion of the horizontal portion of the front wall plate of the two large retaining blocks for retaining walls located above and below. Thus, the two large retaining blocks for retaining walls positioned above and below can be accurately stacked without shifting in the front-rear direction and the left-right direction. And since this can be performed easily, the workability | operativity at the time of construction can be improved significantly.

It is a front view of the large sized building block for retaining walls of this invention. It is a rear view of the large sized building block for retaining walls of this invention. It is a top view of the large sized building block for retaining walls of this invention. It is AA sectional drawing of FIG. It is the perspective view seen from the front of the large sized building block for retaining walls of this invention. It is the perspective view seen from the back of the large sized building block for retaining walls of this invention. It is a front view of another large-sized stacking block for retaining walls of the present invention. It is process drawing when constructing | assembling the large sized building block for retaining walls. It is a front view when constructing a large stacking block for retaining walls. It is sectional drawing seen from the side surface when the large sized building block for retaining walls was constructed. It is explanatory drawing which shows the function of the horizontal part provided in a stand-off leg. It is explanatory drawing which shows a state when it meshes | engages in the horizontal part provided in a catch leg. It is explanatory drawing which shows the state when it joins in the horizontal part provided in a front wall board, and the horizontal part provided in a retaining leg. It is explanatory drawing which shows a state when the front wall board of the two large-sized stacking blocks for retaining walls located up and down is positioned with a guide pin. It is explanatory drawing which shows a state when it fits into the notch part provided in the right and left corner of the front wall board of the other large holding block for retaining walls which the horizontal part of an upper and lower side wall adjoins. It is a front view of the conventional large sized building block for retaining walls. It is a top view of the conventional large sized building block for retaining walls. It is a side view of the conventional large sized building block for retaining walls. It is a front view when the conventional large-sized building block for retaining walls is constructed. It is sectional drawing seen from the side when the conventional large sized building block for retaining walls was constructed. It is explanatory drawing which shows a state when external force acts on the conventional large sized building block for retaining walls. It is explanatory drawing which shows a state when the crack generate | occur | produced in the conventional built-up large building block for retaining walls. It is explanatory drawing which shows a state when external force acts on the conventional large sized building block for retaining walls. It is explanatory drawing which shows a state when the crack generate | occur | produced in the conventional built-up large building block for retaining walls.

One embodiment of a large stacking block for retaining walls according to the present invention will be described.
1 is a front view of a large stacking block for retaining walls according to the present embodiment, FIG. 2 is a rear view of the large stacking block for retaining walls, FIG. 3 is a plan view of the large stacking block for retaining walls, and FIG. AA sectional view of FIG. 1, FIG. 5 is a perspective view seen from the front of the large stacking block for retaining walls, and FIG. 6 is a perspective view seen from the back of the large stacking block for retaining walls.
As shown in FIG. 1 to FIG. 6, the retaining wall large-sized stacking block 1 is made of concrete and is provided so that the front view protrudes rearward from the rhomboid front wall plate 2 and the rear surface of the front wall plate 2. It consists of four stay legs 3.

  The front wall plate 2 has four oblique sides 4 and has a rhombus when viewed from the front where the corners are located at the top and bottom and left and right ends, respectively. Specifically, it is a square rhombus whose horizontal and vertical diagonals have the same length. For example, the length of the horizontal and vertical diagonal lines is about 1 m, and the thickness is about 10 to 20 cm.

FIG. 7 is a front view of another large stacking block for retaining walls.
The front wall plate 2 is not limited to a square rhombus, and may be a horizontally long rhombus whose horizontal diagonal is longer than the vertical diagonal, as shown in FIG. 7 (a). As shown in the figure, a vertically long rhombus whose longitudinal diagonal is longer than the lateral diagonal may be used. Further, the size and thickness are not limited to these.

  In addition, when the front wall plate 2 is constructed with an uneven pattern or pseudo stone pattern on the front wall plate 2 to build a large retaining block 1 for retaining walls on a slope such as a revetment or slope, it is in harmony with the surrounding nature. Design without harming the environment.

  The stand-off leg 3 has four oblique side portions 5 and is formed in a quadrangular prism shape in which each corner is positioned at each of the top and bottom and left and right ends. In addition, the length of the side legs 5 is about 20 to 25 cm, and the width of one side face 5 is about 10 to 15 cm. It should be noted that the shape and size of the holding legs 3 are not limited to these. Four retainer legs 3 are arranged in the middle of the respective oblique sides 4 of the front wall plate 2. Thereby, when the large-sized stacking block 1 for retaining walls is assembled in the valley, the other large-sized stacking blocks 1 for retaining walls adjacent to each of the four holding legs 3 arranged in the middle of the respective oblique sides 4 of the front wall plate 2 are assembled. It will come to be combined with the foot 3 of. Further, when the retaining leg 3 is formed in a quadrangular prism shape having four oblique side portions 5, when the large retaining block 1 for retaining walls is assembled in a valley, one side portion 5 of the retaining leg 3 is adjacent to the other. It is diagonally opposed to one side surface portion 5 of the retaining leg 3 of the large retaining block 1 for retaining walls.

  Each of the four stay legs 3 is provided with a flat plate-like horizontal portion 6 in the middle of the protruding direction. The horizontal portion 6 is provided above the retaining legs 3 in the two retaining legs 3 disposed on the upper side of the front wall plate 2, and below the retaining legs 3 in the two retaining legs 3 disposed on the lower side of the front wall plate 2. When the large-sized stacking block 1 for retaining walls is assembled in a valley, it is oriented horizontally.

  Further, the horizontal portion 6 of the stay leg 3 is formed with stepped portions 7 on both sides thereof by cutting the stay leg 3 in a direction perpendicular to the direction in which the stay leg 3 protrudes, and a part of the stand leg 3 3 so as to protrude from the oblique side surface portion 5. As a result, when the large-sized retaining block 1 for retaining walls is assembled in a valley, the step portions 7 formed on both sides of the horizontal portion 6 are adjacent to the horizontal portions 6 of the holding legs 3 of the other large-sized retaining blocks 1 for retaining walls. They mesh in the direction in which the foot 3 protrudes.

  Further, the front wall plate 2 is provided with flat plate-like horizontal portions 8 at upper and lower corners, respectively. The horizontal portion 8 has a shape that protrudes upward and downward, has a thickness that is half the thickness of the front wall plate 2, and is provided on the rear side of the front wall plate 2. When stacked and assembled, it faces horizontally.

  Further, the front wall plate 2 is provided with a notched portion 9 having a concave shape at the left and right corners. The notch 9 has a thickness half that of the front wall plate 2 and is provided on the rear side of the front wall plate 2. In this manner, the horizontal portions 8 that protrude upward and downward are provided at the upper and lower corners of the front wall plate 2, and the concave and recessed cutout portions 9 are formed at the left and right corners of the front wall plate 2. When the large-sized stacking block 1 for retaining walls is assembled in a valley by being provided, the horizontal portions 8 provided at the upper and lower corners of the front wall plate 2 are adjacent to the front wall plates 2 of the other large-sized stacking blocks 1 for retaining walls. It fits into the notch part 9 provided in a right-and-left corner.

  In addition, the horizontal portion 8 provided at the upper and lower corners of the front wall plate 2 is provided with a circular hole portion 10 extending upward and downward. A cylindrical guide pin 11 for positioning the front wall plate 2 of the large stacking block 1 for retaining walls positioned above and below can be inserted into the hole 10. As a result, when the retaining wall large stacking block 1 is assembled in a valley, the hole 10 of the horizontal portion 8 and the hole of the horizontal portion 8 of the front wall plate 2 of the other retaining wall large stacking block 1 positioned above and below. The guide pin 11 is inserted and positioned over the portion 10.

  In addition, the front wall plate 2 is provided with a drain hole 12 that does not penetrate the lower left and right center of the rear surface. The drain hole 12 can be drained by installing a drain pipe here by penetrating to the front surface of the front wall plate 2 as necessary.

  In the large building block 1 for retaining walls, on the slopes of rivers and coastal revetments, road slopes, railway slopes, residential land development slopes, etc. diagonally upward along the slopes Build and build.

FIG. 8 is a process diagram for constructing a large stacking block for retaining walls.
As shown in FIG. 8A, the construction of the large retaining block for retaining walls is performed by placing the root stone blocks 21 side by side in the horizontal direction on the foundation concrete 20 laid at the lower end of the slope. The root stone block 21 has a deformed pentagonal inverted home base shape on the front wall plate, and the size of the block 21 is the same as that of the large retaining block 1 for retaining walls. Specifically, the lateral width is set to about 1 m, which is the same as the length of the horizontal diagonal of the front wall plate 2 of the retaining wall large stack block 1, and the thickness is also the thickness of the front wall plate 2 of the retaining wall large stack block 1 Same as 10-20 cm. In addition, the root stone block 21 is provided with a horizontal portion at the upper corner of the front wall plate, a hole in the horizontal portion, and protrudes rearward on the rear surface of the front wall plate, as in the large building block 1 for retaining walls. Four stay legs are provided, and the upper two stay legs are also provided with a horizontal portion. The upper end of the root stone block 21 stacked side by side on the foundation concrete 20 has a triangular wave shape with alternating peaks and valleys.

  As shown in FIG. 8 (b), the first-stage retaining wall large stack blocks 1 are vertically stacked on the root stone block 21 in the horizontal direction. In this case, the large-sized stacking block 1 for the retaining wall in the first stage is stacked so as to fit in a valley portion formed between the two root stone blocks 21. In addition, when the large retaining block 1 for retaining walls and the root stone block 21 are stacked, a space is left behind the large retaining block 1 for retaining walls and the root stone block 21. After loading the first large retaining block 1 for retaining walls, the back space 22 is filled in the space behind the large retaining block 1 for retaining walls and the root stone block 21, and the back concrete 23 is filled. The concrete 24 is filled, and the large retaining block 1 for the retaining wall in the first stage is assembled on the root stone block 21 in a valley.

  As shown in FIG. 8 (c), the second-stage retaining wall large-sized stacking blocks 1 are vertically stacked in the horizontal direction on the first-stage retaining wall-mounted large-sized stacking block 1. In this case, the large stacking block 1 for the second retaining wall is stacked so as to be fitted in the valley portion formed between the two large retaining blocks 1 for the retaining wall. In addition, when the second-stage retaining wall large stacking block 1 is stacked, a space is left behind the retaining wall large stacking block 1. After the second stage retaining wall large stacking block 1 is stacked, the backfill material 22 is placed in the space behind the second stage retaining wall large stacking block 1 in the same manner as the first stage retaining wall large stacking block 1. And filling backfilled concrete 23 and filling concrete 24 into the second stage retaining wall large stacking block 1 on the first stage retaining wall large stacking block 1. And assemble.

  A large stacking block 1 for the third retaining wall is placed on the large stacking block 1 for the retaining wall for the second stage, and then a large stacking block 1 for the retaining wall for the fourth stage is mounted on the first and second stages. As in the case of the large building block 1 for walls, it is assembled in a valley. For example, the large-sized stacking block 1 for retaining walls is assembled up to the sixth and seventh stages.

FIG. 9 is a front view when a large-sized stacking block for retaining walls is constructed, and FIG. 10 is a cross-sectional view seen from the side when a large-sized stacked block for retaining walls is constructed.
As shown in FIGS. 9 and 10, the top end of the slope is straightened in the left and right lateral directions by stacking the top end blocks 25 in the left and right lateral directions at the top of the slope. The top end block 25 has a deformed pentagonal home base shape on the front wall plate and a common size with the large retaining block 1 for retaining walls. The top block 25 also has a horizontal portion at the lower corner of the front wall plate, a hole in the horizontal portion, and protrudes rearward on the rear surface of the front wall plate in the same manner as the large building block 1 for retaining walls. The four lower legs are provided, and the lower two lower legs are also provided with a horizontal portion. The top end concrete 26 is provided on the top end block 25 so as to cover it. Although not shown in the drawing, the left and right ends of the slope are linearly arranged in the vertical direction by stacking cuffstone blocks in the vertical direction at the left and right ends of the slope. The cuff stone block has a deformed pentagonal horizontal home base shape on the front wall plate, and the size is the same as that of the large retaining block 1 for retaining walls. As a result, on the slope such as a revetment or slope, a large number of large retaining blocks 1 for retaining walls are built up in a valley along the slope.

  Next, the joining state in the upper and lower retaining wall large stacking blocks 1 when the retaining wall large stacking block 1 is assembled and constructed will be described.

  When stacking the valleys so that the upper large-sized retaining block 1 is fitted into the valley formed between the two large retaining-wall retaining blocks 1 on the lower stage, the front wall plate 2 of the large-sized retaining block 1 for retaining walls In this case, the lower two oblique sides 4 of the front wall plate 2 of the upper retaining wall large stacking block 1 are the upper one oblique sides of the front wall plate 2 of the lower two retaining wall large stacking blocks 1. Match each part 4.

  Further, the horizontal portion 8 provided at the lower corner of the front wall plate 2 of the upper retaining wall large stacking block 1 has notches provided at the left and right corners of the front wall plate 2 of the two lower retaining wall large stacking blocks 1. At this time, the horizontal part 8 of the front wall plate 2 of the upper retaining wall large stacking block 1 is guided by the notch 9 of the front wall plate 2 of the lower retaining wall large stacking block 1. Fit while. Moreover, the hole 10 provided in the lower horizontal part 8 of the front wall board 2 of the large stacking block 1 for retaining walls on the upper stage, and the upper side of the front wall board 2 of the large stacking block 1 for retaining walls two steps below. The guide pin 11 is inserted and positioned over the hole portion 10 provided in the horizontal portion 8, and the front wall plate 2 of the large retaining block 1 for retaining walls on the upper stage is accurately stacked. The lower horizontal portion 8 of the front wall plate 2 of the upper retaining wall large stacking block 1 is firmly aligned with the upper horizontal portion 8 of the front wall plate 2 of the lower retaining wall large stacking block 1. Thereby, in the front wall board 2 of the large building block for retaining walls 1 assembled and constructed, the upper and lower large retaining blocks for retaining walls 1 are firmly joined to each other.

  Further, in the retaining leg 3 of the large retaining block 1 for retaining walls, the two lower retaining legs 3 on the lower side of the large retaining block 1 for retaining walls on the upper stage are the upper sides of the two large retaining blocks 1 for retaining walls on the lower stage. Are combined with each one of the retaining legs 3 and one side surface portion 5 of the retaining leg 3 of the upper retaining wall large stacking block 1 is one side portion of the retaining leg 3 of the lower retaining wall large stacking block 1. 5 diagonally opposite.

  The horizontal portion 6 provided on the retaining leg 3 of the upper retaining wall large stacking block 1 is aligned with the horizontal portion 6 provided on the retaining leg 3 of the lower retaining wall large stacking block 1. In addition, the step portions 7 formed on both sides of the horizontal portion 6 of the retaining leg 3 of the upper holding wall large stacking block 1 partially protrude from the horizontal portion 6 of the retaining leg 3 of the lower retaining wall large stacking block 1. Mesh with each other in the direction in which the foot 3 protrudes. Thereby, also in the retaining leg 3 of the large building block 1 for retaining walls constructed and constructed, the upper and lower large retaining blocks 1 for retaining walls are firmly joined to each other.

  As described above, the four oblique sides 4 of the front wall plate 2 of the large retaining block 1 for retaining walls are combined with the oblique portion 4 of the front wall plate 2 of another adjacent large retaining block 1 for retaining walls. The joints of the large retaining block for retaining wall 1 to be constructed do not extend straight and straight in the horizontal direction like the joints of the conventional large retaining block for retaining walls. It becomes a triangular waveform. At the same time, the length of the joint becomes longer, so when an external force such as a large inertial force of an earthquake acts, the resistance force against the external force becomes larger than that of the conventional one. In addition, by combining the four retaining legs 3 on the rear side of the front wall plate 2 with the retaining legs 3 of the other large stacking blocks 1 for retaining walls, the retaining legs 3 also have external forces such as a large inertial force caused by an earthquake. A great resistance to this occurs. As a result, adjacent large retaining block 1 for retaining walls can be firmly joined to each other, cracks start at the joints of retaining block 1 for large retaining walls, and deformation and cracking occur in the large retaining block for retaining walls to be constructed. Can be prevented.

  In addition, since one side surface portion 5 of the retaining leg 3 is diagonally opposed to one side surface portion 5 of the retaining leg 3 of the other large retaining wall mounting block 1 adjacent thereto, the left and right lateral directions are also linear here. However, it does not extend in a straight line but is inclined, and this also increases the resistance to the acting external force. Thereby, the adjacent large-sized stacking blocks 1 for retaining walls can be firmly joined together, and deformation and cracking can be prevented from occurring in the large-sized stacking block for retaining walls to be constructed.

  Further, when the retaining wall large building block 1 is assembled by constructing the retaining wall 3 by providing the horizontal portion 6 in the middle of the protruding direction, the lower retaining wall large building block 1 is formed by the horizontal portion 6. The large retaining block 1 for the retaining wall on the upper stage can be horizontally stacked in a correct posture. Moreover, since this work is an extremely simple work that is simply carried, the workability during construction can be improved.

FIG. 11 is an explanatory view showing the function of the horizontal portion provided on the foot.
When the large-sized retaining block 1 for retaining walls is assembled on a slope that is curved inwardly in the left-right direction or a slope that is curved outwardly, the slope is curved in the left-right direction. The size of the valley portion formed between the two large retaining blocks 1 for retaining walls is increased. Accordingly, if the horizontal portion 6 is not provided, as shown in FIG. 11A, the retaining wall large stacking block 1 stacked thereon cannot be stacked at a predetermined position, and may be shifted downward. However, by providing the horizontal portion 6, as shown in FIG. 11 (b), the horizontal portions 6 can be joined together, and the retaining wall large stack block 1 can be loaded at a predetermined position without being displaced in the vertical direction. it can.

  In addition, since the horizontal portion 6 is provided so as to be cut in the stay leg 3, the strength of the place where the horizontal portion 6 is provided is slightly reduced, but the horizontal portion 6 protrudes from the stay leg 3. The external force acts on the large retaining block 1 for retaining walls, and a compressive stress is generated on one side and an outer side of the large retaining block 1 on the retaining wall, and a tensile stress is generated on the other. Even if it acts on, the middle of the protruding direction of the retaining leg 3 provided with the horizontal portion 6 is a place where the force does not act most at the neutral point of the compressive stress and the tensile stress. There is nothing to do.

FIG. 12 is an explanatory view showing a state when meshing in the horizontal portion provided on the holding leg.
As shown in FIG. 12, in the baffle leg 3, the baffle leg 3 protrudes from the horizontal portion 6 of the baffle leg 3 of another retaining wall large stack block 1 adjacent to the stepped portions 7 formed on both sides of the horizontal portion 6. Since the direction in which the retaining leg 3 protrudes becomes the front-rear direction of the retaining wall large stack block 1 by meshing in the direction, the engagement between the retaining legs 3 causes the front and rear of the adjacent retaining wall large stack blocks 1 to Movement can be eliminated. Thereby, the adjacent large-sized stacking blocks 1 for retaining walls can be firmly joined together, and deformation and cracking can be prevented from occurring in the large-sized stacking block for retaining walls to be constructed.

FIG. 13 is an explanatory diagram showing a state when the horizontal portion provided on the front wall plate and the horizontal portion provided on the retaining leg are combined.
By providing the horizontal portions 8 at the upper and lower corners of the front wall plate 2 and assembling and constructing the large retaining block 1 for retaining walls, as shown in FIG. The large retaining block 1 for the retaining wall in the upper stage can be loaded horizontally and in a correct posture by a total of three positions of the horizontal portion 6 provided on the holding leg 3. Moreover, since this work is an extremely simple work that is simply carried, the workability during construction can be improved.

FIG. 14 is an explanatory view showing a state when the front wall plates of the two large retaining blocks for retaining walls positioned above and below are positioned by the guide pins.
Hole portions 10 are respectively provided in the horizontal portions 8 provided at the upper and lower corners of the front wall plate 2, and as shown in FIG. 14, the horizontal portions 8 of the front wall plate 2 of the two large-sized retaining blocks 1 for retaining walls positioned above and below. By inserting the guide pin 11 over the hole 10 and positioning it, it is possible to accurately stack the two large retaining wall retaining blocks 1 positioned vertically without shifting in the front-rear direction and the left-right direction. And since this can be performed easily, the workability | operativity at the time of construction can be improved significantly.

FIG. 15 is an explanatory view showing a state in which the upper and lower horizontal portions of the front wall plate are fitted into the notch portions provided at the left and right corners of the front wall plate of another retaining wall large stacking block.
By providing a horizontal portion 8 that protrudes upward and downward at the upper and lower corners of the front wall plate 2, and by providing concave and recessed notch portions 9 at the left and right corners of the front wall plate 2, When the large-sized stacking block 1 for retaining walls is assembled and constructed, as shown in FIG. 15, the front wall plates of the other large-sized stacking blocks 1 for retaining walls adjacent to the horizontal portions 8 provided at the upper and lower corners of the front wall plate 2. By fitting into the notch portions 9 provided at the left and right corners of 2, the front and rear and left and right movements between the adjacent large retaining blocks 1 for retaining walls can be eliminated. Thereby, the adjacent large-sized stacking blocks 1 for retaining walls can be firmly joined together, and deformation and cracking can be prevented from occurring in the large-sized stacking block for retaining walls to be constructed.

  DESCRIPTION OF SYMBOLS 1 ... Large building block for retaining walls, 2 ... Front wall board, 3 ... Retaining leg, 4 ... Oblique side part, 5 ... Side part, 6 ... Horizontal part, 7 ... Step part, 8 ... Horizontal part, 9 ... Notch part DESCRIPTION OF SYMBOLS 10 ... Hole part, 11 ... Guide pin, 12 ... Drainage hole part, 20 ... Foundation concrete, 21 ... Block for root stone, 22 ... Backfill material, 23 ... Backfill concrete, 24 ... Trunk concrete, 25 ... Block for top end, 26 ... Top end concrete, 31 ... Large building block for retaining wall, 32 ... Front wall plate, 33 ... Retaining leg, 34 ... Protruding part, 35 ... Recessed part, 36 ... Base concrete, 37 ... Backfill Wood, 38 ... backfilled concrete, 39 ... trunked concrete, 40 ... top concrete

The first invention is provided with four oblique sides, with the corners positioned at the top and bottom and left and right ends, respectively, so that the front view protrudes backward from the rhombus front wall plate and the rear surface of the front wall plate And four constraining legs arranged in the middle of each oblique side part of the front wall plate, and the constraining leg has four oblique side parts, and each corner is at the top and bottom and left and right ends, respectively. When the square block is located and the large retaining block for retaining walls is assembled in the valley, each of the four retaining legs is combined with the retaining legs of the other large retaining blocks for retaining walls, and one side of the retaining leg. It is a large-sized building block for retaining walls which diagonally opposes one side surface part of the holding leg of the large-sized stacked block for retaining walls which a part adjoins .

2nd invention is a large-sized stacking block for retaining walls which provides a horizontal part in the middle of the direction which a retaining leg protrudes in 1st invention.

According to a third invention, in the second invention, when stepped portions are formed on both sides of the horizontal portion of the retaining leg, and the large stacking block for retaining walls is assembled in a valley, the stepped portions formed on both sides of the horizontal portion are This is a large building block for retaining walls that meshes with a horizontal portion of a retaining leg of another adjacent large retaining block for retaining walls in the protruding direction of the retaining leg.

A fourth invention is a large building block for retaining walls according to any one of the first to third inventions, wherein horizontal portions are provided at upper and lower corners of the front wall plate.

A fifth invention is the fourth invention, wherein in the fourth invention, a hole is provided in the horizontal portion of the front wall plate so that the guide pin can be inserted, and when the large-sized stacking block for retaining walls is assembled in a valley, the hole in the horizontal portion It is a large-sized stacking block for retaining walls that inserts and positions a guide pin over the horizontal hole of the front wall plate of the large-sized stacked block for retaining walls positioned above and below.

According to a sixth invention, in the fourth or fifth invention, the horizontal portion of the front wall plate has a convex protruding shape, and concave and recessed cutout portions are provided at the left and right corners of the front wall plate. When a large building block for retaining walls is assembled in valleys, it is a large building block for retaining walls that fits into the notch of the front wall plate of the other large retaining wall block that the horizontal portion of the front wall plate is adjacent to. is there.

Claims (7)

A front wall plate having four oblique sides and having respective corners positioned at the upper and lower and left and right ends, and a front wall plate having a rhombus shape, and four retaining legs provided so as to protrude rearward from the rear surface of the front wall plate; Consisting of
When the four retaining legs are arranged in the middle of each hypotenuse of the front wall plate, and the large retaining blocks for retaining walls are assembled in a valley, each of the four retaining legs is adjacent to another large retaining block for retaining walls. A large stacking block for retaining walls, characterized by being combined with the pedestal legs. In the large-sized building block for retaining walls described in claim 1,
The baffle has a quadrangular prism shape having four oblique side portions, and each corner is positioned at each of the upper and lower and left and right ends. A large-sized stacking block for retaining walls, characterized in that one side surface portion is diagonally opposed to one side surface of a retaining leg of another large-sized stacked retaining block for retaining walls. In the large-sized building block for retaining walls described in claim 1 or 2,
A large-sized stacking block for retaining walls, characterized in that a horizontal portion is provided in the middle of the protruding direction of the retaining leg. In the large building block for retaining walls described in claim 3,
When the stepped portions are formed on both sides of the horizontal portion of the retaining leg and the large retaining block for retaining walls is assembled in a valley, the stepped portion formed on both sides of the horizontal portion is adjacent to other large retaining blocks for retaining walls. A large-sized stacking block for a retaining wall, which meshes with a horizontal portion of the stay leg in a direction in which the stay leg protrudes. In the large-sized building block for retaining walls as described in any one of Claims 1 thru | or 4,
A large stacking block for retaining walls, characterized in that horizontal portions are provided at upper and lower corners of the front wall plate. In the large-sized building block for retaining walls described in claim 5,
When a hole that allows a guide pin to be inserted into the horizontal portion of the front wall plate is provided, and the large retaining block for retaining walls is assembled in a valley, large holes for other retaining walls positioned above and below the hole in the horizontal portion A large-sized stacking block for retaining walls, characterized in that a guide pin is inserted and positioned over a hole in a horizontal portion of a front wall plate of the stacking block. In the large building block for a retaining wall according to claim 5 or 6,
When the horizontal part of the front wall plate is shaped to protrude in a convex shape, and concave notched portions are provided at the left and right corners of the front wall plate, and the large stacking block for the retaining wall is assembled in a valley A large building block for retaining walls, wherein the horizontal portion of the front wall plate is fitted into a notch portion of the front wall plate of another retaining wall large block adjacent to the front wall plate.

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