JP5114452B2 - Retaining wall block - Google Patents

Description

  The present invention relates to a retaining wall block that is optimal for use in constructing retaining walls at corners or curved portions.

  Precast concrete products are used in many structures because quality control is easier and the construction period can be shortened compared to cast-in-place concrete. In waterways and retaining walls, L-type or inverted T-type precast concrete members are continuously laid and constructed, but depending on the laying location, there are specific curved portions or corner portions.

  When constructing a retaining wall corresponding to a curved or corner part peculiar to such a laying location, it is necessary to adjust the precast concrete product which is a standard product to be diagonally cut or to adjust only that part as a cast-in-place concrete part was there.

  For example, in the case of an L-shaped retaining wall for residential land development, the corner portion often requires a curved portion even in the case of an L-shaped retaining wall for road construction, so that various corner angles or butt angles may be obtained depending on site conditions. It was necessary to adjust and supply the member. It is often inconvenient to produce such non-standard products due to the characteristics of precast concrete products that are cast into molds and molded.

  Therefore, in addition to the conventional method of fixing a pair of members at a predetermined angle and then fixing them by bolt connection or the like, it is not adjusted to a predetermined corner angle or a butt angle in the factory in advance, so that it is not a product. There are proposals to supply products that can be adjusted to a predetermined corner angle or butt angle.

  For this purpose, in addition to the conventional method in which a pair of members are arranged at a predetermined angle and then fixed by bolt connection or the like, in JP-A-2-210121, either one of the vertical retaining walls of the L-shaped retaining wall is used. There is a proposal that the side end face is formed so as to be recessed from the outside to the inside, a cylindrical corner member is interposed between the butts of the vertical retaining wall, and if necessary, this joining portion is filled with mortar to form an integral structure. is there.

  In Japanese Patent Laid-Open No. 5-132958, a support block is brought into contact with the end faces of a pair of retaining wall blocks in which one end of a base portion is cut, and only the shape of the support block is changed to cope with various angles. The proposal is seen. Alternatively, in Japanese Patent Application Laid-Open No. 7-317084, a pair of engagement grooves are formed that are formed in a column shape as a whole and are engaged with the end portions of the retaining walls in the vertical direction and are positioned in the above angular relationship. A corner retaining wall characterized by being provided is disclosed.

  In addition, the opposite surface of the bottom plate is formed obliquely, and a pair of one block provided with a joint having a through hole in the center at one end of the vertical wall and the joint of the other block are axially attached by a shaft rod. The corner block (Japanese Patent Laid-Open No. 9-296461) of the L-shaped retaining wall characterized by a hinge structure and the adjacent elevation plates are connected with several metal hinges and installed on the construction site. A retaining wall corner block (utility model No. 3138182) characterized by locking the rotating part of the hinge after setting the angle.

  Furthermore, a first block having a cylindrical portion having a vertical through hole in the lower half of one vertical side and a cylindrical portion having a vertical hole in the upper half of the vertical side opposite thereto are projected. There are those in which the second block provided is connected with a hinge structure (Japanese Patent Laid-Open No. 4-3601717, Japanese Utility Model Publication No. 7-6200).

JP-A-2-210121 JP-A-5-132958 JP-A-7-317084 JP-A-9-296461 Utility Model No. 3138182 Japanese Patent Laid-Open No. 4-360917 No. 7-6200

  However, it is necessary to form a column support on the site, or to install a support column on the site, or to manufacture a column with a different shape in the means corresponding to various angles depending on the angle of the corner support. There is a problem. If a hinge structure is used, these problems will be eliminated, but if the hinge part is made of concrete, cracks will occur due to the load applied to the hinge part, and if steel members are combined to avoid this, the structure will become complicated. This is disadvantageous in terms of cost.

  On the other hand, the conventional method of fixing a pair of members at a predetermined angle and then fixing them by bolt connection or the like is simple, but the problem is that the butted portion is separated and the integrity is impaired, and the connecting portion is exposed. This results in problems with appearance and durability.

  The present invention was made to solve the conventional problems as described above, and it is not necessary to adjust a predetermined corner angle or a butt angle in advance to manufacture a product. An object of the present invention is to provide a retaining wall block that uses two types of retaining wall blocks and can be adjusted and laid freely and easily to a desired corner angle or curve according to the conditions of the site.

  In order to achieve the above object, a retaining wall block according to claim 1 of the present invention is a retaining wall block erected at a corner portion or a curved portion, and below a side wall end face on the connection side of one retaining wall block. A protrusion is continuously provided in the first portion, and is fitted to the protrusion of the one retaining wall block on the side wall end surface on the connection side of the other retaining wall block, and is rotated with the one retaining wall block via the vertical axis. A notch recess that is axially coupled so as to be movable is formed, and further, the upper end of the side wall end on the connecting side of the both retaining wall blocks is fixed to one retaining wall block, and the other end is secured to the other retaining wall block. After being connected to the other retaining wall block by a connection plate temporarily fixed with a bolt, both the retaining wall blocks are rotated around the temporarily fixed bolt shaft and the longitudinal axis to adjust the connection angle. , The connection plug fixed by final tightening of the temporarily fixed bolt Characterized by being configured to connect together via the over bets.

  In order to achieve the above object, the invention according to claim 2 of the present application is to fix the upper surface portion of the side wall end portion on the connecting side of the both retaining wall blocks and one end portion to the one retaining wall block. The connection by means of a connection plate in which the other end is temporarily fixed to the other retaining wall block with a bolt communicates with the inner surface side of the side wall formed on the upper surface of the side wall end on the connection side of the both retaining wall blocks. The groove in the thickness direction to be connected, and the connection in any one of the U-shaped, U-shaped or C-shaped connecting plates in the plan view in which both ends are respectively installed in the both recessed grooves and the one end is fixed It is characterized by having a configuration comprising a plate.

  In order to achieve the above object, the invention according to claim 3 of the present application is such that after both the retaining wall blocks are integrally connected through the connecting plate by the final fastening of the temporarily fixed bolts, The concave groove is filled with a curable filler and covers the upper surfaces of both end portions of the connecting plate installed and fixed in the concave groove.

  In order to achieve the above object, the invention according to claim 4 of the present application is such that the side wall end surface on the connection side of the one retaining wall block is a vertical plane and the side wall end surface on the connection side of the other retaining wall block. Are formed with circular arc surfaces, and at the same time, cover the gap appearing at the position where the one side wall end surface formed by a vertical plane is connected to the side wall end surface formed by the arc surface of the other retaining wall block. A protrusion is provided along the longitudinal direction of the one side wall end face.

  In order to achieve the above object, in the invention according to claim 5 of the present application, the retaining wall block includes a vertical side wall portion and a bottom plate portion extending horizontally inward from the lower end edge of the side wall portion. An inclined surface that is an L-shaped retaining wall block, and the side end surfaces on the connection side of the bottom plate portion are in contact with each other when the connection angle by the abutment of the side wall end surfaces on the connection side of both retaining wall blocks is about 90 degrees In addition, a plurality of reinforcing bars for integrating with the cast-in-place concrete are projected on the front end face of the bottom plate portion.

  Further, in order to achieve the above object, the invention according to claim 6 of the present application is provided on the left side or the right side wall end surface of the retaining wall block and the upper surface of the side wall end portion on the connection side of the one retaining wall block. The protruding portion and the concave groove formed on the side wall end surface and the upper surface of the side wall end portion are respectively provided on the right side or the left side wall end surface and the upper surface of the side wall end portion of the retaining wall block. The notch recess and the groove formed respectively on the upper surface of the end surface and the side wall end portion are formed, respectively.

  In the retaining wall block according to claim 1 of the present invention, as described above, the lower part of the both retaining wall blocks to be connected can be rotated on the vertical axis at the portion of the projecting part and the notch recessed part to be fitted. At the upper part, one end is fixed to one retaining wall block, and the other end is connected to the other retaining wall block to be connected to this via a connection plate temporarily fixed with a bolt for temporary fastening. The both retaining wall blocks are rotated around the temporarily fixed bolt shaft and the longitudinal axis to adjust the connection angle, and are integrally connected via a connection plate fixed by final tightening of the bolt. Therefore, there is no need to manufacture the product by adjusting it to a predetermined corner angle or butt angle in advance, basically using two types of retaining wall blocks, and freely and easily according to the conditions of the site Retaining wall adjusted to corner angle and curve Can Rukoto

  Furthermore, the lower part of the both retaining wall blocks to be connected is pivotally attached so that it can be rotated on the vertical axis at the projecting part and the notch recessed part to be fitted, and one end is attached to one retaining wall block at the upper part. Both retaining wall blocks are fixed when connected to the other retaining wall block, which is fixed to the other retaining wall block, via a connection plate temporarily fixed with bolts. The connecting angle can be easily adjusted by rotating the upper and lower temporarily fixed bolt shafts and the lower vertical axis as the central axes.

  In the invention according to claim 2 of the present application, as described above, one end of the upper surface of the side wall end on the connecting side of the both retaining wall blocks is fixed to the one retaining wall block, and the other end The connection by the connecting plate temporarily fixed to the other retaining wall block with a bolt is connected to the inner surface side of the side wall formed on the upper surface portion of the side wall end on the connecting side of the both retaining wall blocks. Connecting the concave groove and the both ends of the concave groove with a connecting plate of any one of approximately U-shaped, U-shaped, or C-shaped connecting plates in the plan view. Positioning when installing the plate is easy, and it is possible to suppress the shake of the rotation center axis (vertical axis, temporarily fixed bolt axis) of both retaining wall blocks when adjusting the angle, which makes the angle adjustment work efficient. Can be done well.

  In the invention according to claim 3 of the present application, as described above, after the both retaining wall blocks are integrally connected via the connecting plate by the final fastening of the temporarily fixed bolt, Both ends of the connecting plate installed and fixed in the concave groove are configured to cover the upper surfaces of the both ends of the connecting plate installed and fixed in the concave groove. When the upper surface of the wall is covered with a curable filler and concealed so that it cannot be seen from the upper surface of the retaining wall structure, the groove is a groove in the thickness direction communicating with the inner surface of the side wall. It is hidden so that it cannot be seen from the outer surface of the wall structure, and the scenery is not damaged.

  Further, in the invention according to claim 4 of the present application, as described above, the side wall end surface on the connection side of the one retaining wall block is a vertical plane, and the side wall end surface on the connection side of the other retaining wall block is an arc surface. And a ridge that covers the gap appearing at the connecting position with the side wall end surface formed with the arc surface of the other retaining wall block at the outer side position of the one side wall end surface formed with a vertical plane. Is provided along the longitudinal direction of the one side wall end surface so that the gap between the butted portions of both retaining wall blocks is covered with the projecting portion and is not visible from the outer surface of the retaining wall structure. It is hidden and does not damage the landscape.

  In the invention according to claim 5 of the present application, as described above, the retaining wall block has an L-shaped shape including a vertical side wall portion and a bottom plate portion extending horizontally inward from the lower end edge of the side wall portion. It is a retaining wall block, and when the connecting angle of the side wall end surfaces on the connecting side of both retaining wall blocks is set to 90 degrees, the side end surfaces on the connecting side of the bottom plate portion are formed with inclined surfaces that are in contact with each other. In addition, the bottom plate portion and the cast-in-place concrete can be easily integrated by adopting a configuration in which a plurality of reinforcing bars for integration with the cast-in-place concrete are projected on the front end surface of the bottom plate portion. In addition, it is possible to construct a retaining wall that is superior in structural strength.

  Further, as described above, the invention according to claim 6 of the present application has a side wall end surface on the connection side of the one retaining wall block and a side wall end surface on the left side or the right side of the retaining wall block, and an upper surface of the side wall end. The protrusion and the groove formed on the upper surface of the side wall end are respectively provided on the right or left side wall end surface of the retaining wall block, and on the side wall end surface on the connection side of the other retaining wall block and the upper surface of the side wall end. By forming the cut-out recess and the groove formed respectively, one type of retaining wall block is used, and the left side wall end surface of the retaining wall block of the same structure connected to the right side wall end surface thereof is used. It is possible to construct a desired curved retaining wall freely and easily by repeatedly and continuously laying the connecting structure.

It is a perspective view before the assembly of a pair of retaining wall block which concerns on this invention. It is a perspective view of a pair of retaining wall block after the assembly. It is an enlarged plane partial view of the upper surface part of the connection end part at the time of the assembly. FIG. 4 is a cross-sectional view taken along line AA in FIG. It is a perspective view of a pair of retaining wall block which made the connection angle 90 degree | times. It is an enlarged plane partial view of the strip surface part of the connection end part at the time of the assembly. It is a perspective view of the retaining wall block of the other Example which concerns on this invention. It is a top view of the Example from which the connection plate used by this invention differs. It is the plane fragmentary view of the retaining wall which connected the retaining wall block shown in FIG. 7, and curved and laid outwardly. FIG. 8 is a partial plan view of a curved retaining wall composed of a retaining wall formed by connecting retaining wall blocks shown in FIG. 7 and a retaining wall that is laid in a concave shape toward the outside by coupling a retaining wall block according to another embodiment. .

  Hereinafter, the present invention will be described in detail based on an embodiment shown in FIGS. In the figure, reference numeral 1 denotes an L-shaped retaining wall block according to the present invention, and a side wall portion 2 formed by a rectangular vertical plane, and a plan view extending horizontally inward from the lower end edge of the side wall portion 2. It is mainly composed of a base-shaped bottom wall 3. In the figure, reference numeral 4 denotes a reinforcing bar protruding from the front end face of the bottom wall 3.

  5 is a side wall end face on the connecting side of the retaining wall block 1, and a projecting portion 6 having a semicircular arc surface on the outer wall surface is formed below the side wall end face 5 formed by a vertical plane. A vertical axis 7 is erected at the center of the upper surface of the protrusion 6. Reference numeral 8 denotes a protrusion provided on the side wall end face 5, which is located near the outer wall surface of the side wall 2 and extends from the upper end of the side wall 2 to the protrusion 6.

  11 is the other retaining wall block that is connected to the retaining wall block 1 to construct a retaining wall at the corner portion, and, like the one retaining wall block 1, is a side wall portion 12 formed by a rectangular vertical plane; The plan view extending horizontally inward from the lower end edge of the side wall portion 12 is mainly composed of a bottom wall portion 13 having a substantially trapezoidal shape. Reference numeral 14 denotes a side wall end face on the connection side when connecting to the retaining wall block 1, and an outer wall surface is formed of a semicircular arc surface. A protruding portion of the retaining wall block 1 is formed at a lower portion of the side wall end face 14. A notch recess 15 formed in a vertical plane that fits with the portion 6 is provided.

  Reference numeral 16 denotes a cylindrical sleeve embedded in the lower end portion of the side wall end surface 14, which is open to the ceiling surface of the notch recess 15, and has a protruding portion 6 of the retaining wall block 1 and a notch of the other retaining wall block 11. When assembling the concave portion 15 by fitting, the vertical wall 7 erected on the upper surface of the protruding portion 6 is inserted into the sleeve 16 that opens to the ceiling surface of the notched concave portion 15, thereby the both retaining wall blocks. 1 and 11 are connected so as to be rotatable about the longitudinal axis 6. In the figure, reference numeral 17 denotes a reinforcing bar protruding from the front end face of the bottom wall portion 13.

  Reference numeral 18 denotes a connecting plate for connecting the both retaining wall blocks 1 and 11, as shown in FIG. 8, having different shapes such as (a) a vertical U shape, (b) a U shape, and (c) a horizontal C shape. Among these connecting plates 18, the vertical U-shaped connecting plate 18 </ b> A and the U-shaped connecting plate 18 </ b> B are connected so that the connecting angle (inner angle) of both retaining wall blocks 1, 11 is smaller than 180 °. The horizontal C-shaped connection plate 18C is used when the connection angle (inner angle) is connected at an angle larger than 180 °.

  19 and 20 are concave grooves formed on the upper surface of the side wall portion on the connecting side of the both retaining wall blocks 1 and 11, respectively, and the opening portions of the concave grooves 19 and 20 extending in the plate thickness direction of the respective side wall portions 2 and 12 are The side wall portions 2 and 12 communicate with the inner wall surface side. In the figure, reference numerals 21 and 22 denote anchor nuts embedded in the bottoms of the concave grooves 19 and 20, and reference numerals 23 and 24 denote bolts screwed to the anchor nuts 21 and 22, respectively.

  Next, the assembly sequence in the case of constructing the corner retaining wall as shown in FIG. 5 using the both retaining wall blocks 1 and 11 having the above-described configuration and having the connection angle (inner angle) of 90 ° will be described. First, the both retaining wall blocks 1 and 11 are arranged in a row as shown in FIG. 1, and the ceiling surface of the notch recess 15 of the other retaining wall block 11 is placed on the upper surface of the projecting portion 6 of the retaining wall block 1 so as to project. The lower end portions of both retaining wall blocks 1 and 11 are assembled by inserting the front end portion of the vertical axis 7 erected from the upper surface of the portion 6 into the sleeve 16 that opens to the ceiling surface of the notch recess 15.

  By assembling the lower part of both retaining wall blocks 1, 11 by fitting the projecting part 6 with the notched recess 15 and inserting the longitudinal axis 7 into the sleeve 16, As shown in FIGS. 2 and 3, the upper portion is formed with concave grooves 19, 20 formed on the upper surfaces of the side wall end portions 2, 12 on the connection side, when the side wall end surfaces 5, 14 on the connection side come into contact with each other. Are arranged in a parallel state with the opening located on the inner wall surface side.

  When the concave grooves 19 and 20 are arranged in parallel as described above, both end portions 18a and 18b of the vertical U-shaped connection plate 18A or U-shaped connection plate 18B are connected to the inner wall surfaces of the both side wall portions 2 and 12, respectively. It is inserted and installed in the concave grooves 19 and 20 from the side.

  Next, when one end 18a of the connecting plate 18 is tightened with a bolt 23 screwed to the anchor nut 21, and the one end 18a of the connecting plate 18 is fixed in the concave groove 19 of the retaining wall block 1, the retaining wall The other end portion 18 b of the connecting plate 18 installed in the concave groove 20 of the block 11 is temporarily fixed by a bolt 24 screwed into the anchor nut 22.

  Thereby, as shown in FIGS. 2, 3, and 4, the upper portions of the both retaining wall blocks 1, 11 are fixed at one end 18 a by bolts 23 and temporarily fixed at the other end 18 b by bolts 24. The connection plate 18 is connected. That is, as shown in FIG. 4, the bolt shaft of the bolt 24 temporarily fixed in the upper part of both retaining wall blocks 1 and 11 and the axis of the vertical axis 7 in the lower part of both retaining wall blocks 1 and 11 are the same. Positioned on a straight line, assembly is complete.

  Next, of the retaining wall blocks 1 and 11 assembled in the state shown in FIGS. 2 to 4, the side wall end opposite to the connecting side of the other retaining wall block 11, that is, the side wall portion in FIG. The retaining wall block 11 in which the ceiling surface portion of the notch recess 15 is supported on the upper surface of the projecting portion 6 of the retaining wall block 1 by pressing the right end portion 12 in the clockwise direction is a bolt on the same axis. It rotates in the same direction (clockwise) with the 24 bolt shafts and the longitudinal axis 7 as the central axes.

  By further pressing the right end portion of the side wall portion 12 of the retaining wall block 11 and rotating it clockwise in the figure, the connection angle by the butting of the side wall end surfaces 5 and 14 of both retaining wall blocks 1 and 11 is 90, for example. When the end of the retaining wall block 11 is reached, the side end surfaces 3a and 13a on the connection side of the bottom plate portions 3 and 13 are in contact with each other, and the rotation of the retaining wall block 11 is stopped to complete the positioning of the retaining wall block 11 with respect to the retaining wall block 1 To do. At this time, the side wall end portion on the connection side of the retaining wall block 11 rotates in the direction of the arrow from the state shown in FIG. 3 with the bolt 24 as the rotation center, so that the lower surface of the other end portion 18b of the connection plate 18 is a concave groove. The upper surface of 20 is slid to fit in the state shown in FIG.

  The both end portions 18a and 18b of the connecting plate 18 are accommodated in the state shown in FIG. 6 in the concave grooves 19 and 20, that is, in the illustrated embodiment, the side wall end surfaces 5 and 14 of both retaining wall blocks 1 and 11. When the connection angle by the butting becomes 90 degrees, the bolts 24 that have been temporarily tightened are finally tightened so that both retaining wall blocks 1 and 11 are integrally connected by the connection plate 18 as shown in FIG. A corner retaining wall R having a connecting angle of 90 degrees is constructed.

  Here, by adjusting the abutment angle of the side wall end surfaces 5 and 14 on the connecting side of the retaining wall blocks 1 and 11, the desired corner angle as shown in FIGS. 5 and 6 is obtained. The corner retaining wall R is constructed. As shown in FIG. 6, the corner retaining wall R is formed with a space D at the abutting portion between the side wall end faces 5 and 14, and this is exposed to the front side of the corner retaining wall R. However, in the present invention, the side wall end face 5 is provided with the protrusions 8 that cover the distance D, so that it is hidden from view from the outer surface of the retaining wall R and does not impair the scenery.

  Next, the concave grooves 19 and 20 of both retaining wall blocks 1 and 11 are filled with a curable filler 25 such as concrete mortar, and both end portions 18a of the connecting plate 18 fixed in the concave grooves 19 and 20 are provided. , 18b. Further, since the reinforcing bars 4 and 17 protruding from the front end surfaces of the bottom plate portions 3 and 13 are exposed in a state of being orthogonal to each other in the vertical relationship, concrete is applied to the space formed by the front end surfaces of the bottom plate portions 3 and 13. As a result, the bottom slab is reinforced with concrete that is integrated with the reinforcing bars 4 and 17.

  The retaining wall block shown in FIG. 1 to FIG. 6 can construct a corner retaining wall having an interior angle of 90 ° or less by connecting the pair of retaining wall blocks 1 and 11 while adjusting the coupling angle. However, the one shown in FIGS. 7, 9 and 10 uses one type of retaining wall block 30, and the retaining wall blocks 30 having the same structure are arranged on the left and right sides of the retaining wall blocks 30 at the desired angle. The retaining wall block can construct a curved retaining wall by abutting and continuously connecting with each other, and is different from the retaining wall blocks 1 and 11 shown in FIGS. 1 to 6 only in the following points.

  More specifically, as shown in FIGS. 7, 9 and 10, the retaining wall block 30 is provided with the retaining wall blocks 1 and 11 only at the side wall end on one of the side walls 2 and 12, respectively. The different structural portions are different from the retaining wall blocks 1 and 11 only in that the structural portions are provided at both ends of the side wall. Therefore, since the structure of each connecting portion is the same as that of the retaining wall blocks 1 and 11 shown in FIGS. 1 to 6, the same members and the same structures are denoted by the same reference numerals and detailed description thereof is omitted. Only the differences will be described in detail below.

  7, 9, and 10, 30 is an L-shaped retaining wall block that extends horizontally inward from the lower end edge of the side wall portion 31 and a side wall portion 31 formed by a rectangular vertical plane. The bottom view mainly includes an isosceles trapezoidal bottom wall portion 32, and 33 is a reinforcing bar protruding from the front end surface of the bottom wall portion 32. The side wall portion 31 includes a side wall end surface (hereinafter referred to as a right side wall end surface) 5 that is a plane perpendicular to the right end side thereof, and a protruding portion having a semicircular arc surface on the outer wall surface below the side wall end surface 5. 6 is formed, and a vertical axis 7 is erected in the center of the upper surface of the protrusion 6.

  Reference numeral 8 denotes a ridge provided on the right side wall end surface 5, which is located near the outer wall surface of the side wall 31 and extends from the upper end of the side wall 31 to the protrusion 6. Reference numeral 14 denotes a side wall end surface (hereinafter referred to as a left side wall end surface) provided on the left end side of the side wall portion 31, and an outer wall surface is formed of a semicircular arc surface. A notch recess 15 formed by a vertical plane that fits with the protrusion 6 provided on the right side wall end face 5 is provided.

  Reference numeral 16 denotes a cylindrical sleeve embedded in the lower end portion of the left side wall end surface 14, which opens to the ceiling surface of the notch recess 15, and the other holding portion connected to the protruding portion 6 of the retaining wall block 30. When assembling the notch recess 15 of the wall block 30 by fitting, the longitudinal axis 6 erected on the upper surface of the protruding portion 6 is inserted into the sleeve 16 that opens to the ceiling surface of the notch recess 15; The retaining wall blocks 30 and 30 are connected so as to be rotatable about the longitudinal axis 6.

  Reference numeral 18 denotes a connecting plate for connecting the retaining wall blocks 30 and 30. As shown in FIG. 9, when the connecting angle (inner angle) of both retaining wall blocks 30 and 30 is 90 ° or less, FIG. They are connected by a vertical U-shaped connecting plate 8A shown in (A) or a U-shaped connecting plate 8B shown in (B). Further, as in the case of the retaining wall blocks 40 and 40 shown in FIG. 10, when the connection angle (inner angle) is connected at 90 ° or more, a horizontal C-shaped connection plate 8C shown in FIG. And connect. The method of connecting the retaining wall blocks 30 and 40 by the connecting plate 8 is the same as that of the retaining wall blocks 1 and 11 shown in FIGS.

DESCRIPTION OF SYMBOLS 1,11 Retaining wall block 2.12 Side wall part 3,13 Bottom wall part 4,17 Reinforcement bar 5,14 Side wall end surface of connection side 6 Protruding part 7 Vertical axis 8 Projection part 15 Notch part 16 Sleeve 18 Connection plate 18a, 18b Same end 19, 20 Recessed groove 21, 22 Anchor nut 23, 24 Bolt

Claims (6)

  A retaining wall block standing on a corner portion or a curved portion, wherein a projecting portion is continuously provided at a lower portion of the side wall end surface on the connection side of one retaining wall block, and on the side wall end surface on the connection side of the other retaining wall block. A notch recess that is fitted to the projecting portion of the one retaining wall block and is axially coupled to the one retaining wall block via a longitudinal axis so as to be rotatable, and further, the both retaining wall blocks The upper surface of the side wall end of the connecting side is fixed to one retaining wall block at one end, and the other end is connected to the other retaining wall block by a connection plate temporarily fixed with a bolt, Both retaining wall blocks are pivoted about the temporarily fixed bolt shaft and the longitudinal axis to adjust the connection angle, and then connected together via the connection plate fixed by final tightening of the temporarily fixed bolt. Retaining wall block characterized by being configured to Click.   The upper surface part of the side wall end on the connection side of the both retaining wall blocks is fixed to the one retaining wall block at one end, and the connection plate is temporarily fixed to the other retaining wall block with a bolt. Are connected to the inner surface side of the side wall formed on the upper surface portion of the side wall end portion on the connection side of the both retaining wall blocks, and both end portions are respectively installed in the both concave grooves. The retaining wall block according to claim 1, wherein the retaining wall block is composed of any one of a U-shaped, U-shaped or C-shaped connecting plate in a plan view with one end fixed.   After the both retaining wall blocks are integrally connected via the connecting plate by final fastening of the temporarily fixed bolts, the both concave grooves are filled with a curable filler, and are fixed in the concave grooves. The retaining wall block according to claim 2, wherein the upper surface of both end portions of the connecting plate is covered.   When the side wall end surface on the connection side of the one retaining wall block is formed with a vertical plane and the side wall end surface on the connection side of the other retaining wall block is formed with an arc surface, the one side wall formed with a vertical plane is also used. A protruding portion that covers a gap that appears at a connection position with the side wall end surface formed by the arc surface of the other retaining wall block is provided along the longitudinal direction of the one side wall end surface at an outer position of the end surface. The retaining wall block according to claim 1, 2, or 3.   The retaining wall block is an L-shaped retaining wall block composed of a vertical side wall portion and a bottom plate portion extending horizontally inward from the lower end edge of the side wall portion, and is provided on the side wall end face on the connecting side of both retaining wall blocks. When the connecting angle by the abutment is about 90 degrees, if the side end surfaces on the connection side of the bottom plate portion are formed by inclined surfaces that are in contact with each other, the front end surface of the bottom plate portion is integrated with the cast-in-place concrete. 5. A retaining wall block according to claim 1, wherein a plurality of reinforcing bars are protruded.   The protrusions and the concave grooves formed on the side wall end surface and the side wall end on the connection side of the one retaining wall block are respectively formed on the left and right side wall end surfaces and the side wall end of the retaining wall block. The notch recess and the groove formed on the side wall end surface on the right side or the left side wall end surface of the wall block and on the upper surface of the side wall end portion, respectively, on the side wall end surface on the connecting side of the other retaining wall block and the upper surface of the side wall end portion, respectively. The retaining wall block according to claim 1, 2, 3, 4 or 5.

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