JP2010242473A - L-concrete block for stacking and exclusive base member - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve problems of a conventional L-concrete block for a retaining wall and a base member thereof which are used for a retaining wall building construction such as a boundary wall construction in housing land development wherein they are difficult to use in the construction of a high retaining wall since they are restricted to use for a one-stage retaining wall only and, if used therefor, the height of the block and the base member must be specially increased. <P>SOLUTION: This L-concrete block 1 for stacking which is used for constructing a retaining wall and which includes a vertical wall part 2, a tilted bottom plate part 3 having one end connected to the vertical wall part 2 and a connection support part 4 connected to the rear surface of the vertical wall part 2 and the upper surface of the tilted bottom plate part 3. The vertical wall part 2 includes, on the upper end side, the bottom end part of the vertical wall part 2 of the L-concrete block 1 for stacking which is stacked on the upper surface of the other L-concrete block and a support shelf part 5 having a recessed groove 7 for fitting, thereinto, a fitting ridge which projects from the lower surface of an exclusive base member. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to an L-shaped concrete block for retaining wall construction used for retaining wall construction such as prevention of collapsing of boundary walls, road shoulders, and rock walls of residential land development. Used for construction.

  Conventional L-type concrete blocks for building retaining walls are generally constructed with a weight of 1 ton and a height of 2 m, and are for relatively low 1-stage retaining walls. It was difficult to construct, and in order to use it for a high retaining wall, a special production was made by increasing the height dimension of the L-shaped concrete block.

  When the size of the L-shaped concrete is increased, not only the cost for molding, manufacturing, storing and transporting the concrete is increased, but also the construction efficiency of the work site for constructing the retaining wall is lowered. Therefore, since there is a size limit by itself, the high wall becomes a stone wall, and the L-type concrete block of the conventional specification that is difficult to pile up has not been used for the construction of a multi-stage retaining wall.

  In addition, in order to construct a high retaining wall using a conventional L-shaped concrete block of general dimensions, it is necessary to secure a sufficient step distance between the upper end of the lower stage and the lower end of the upper stage for safety. There is a drawback that the area corresponding to the inclined portion of the retaining wall becomes large.

Problems to be solved by the invention

  The conventional L-type concrete block for retaining wall construction was limited to the construction of one-stage retaining wall, so when constructing a tall retaining wall, it is not a stacked connection structure. A large L-shaped concrete block was used. Therefore, in the concrete molding at the time of production, storage after completion, transportation to the work site, construction work, etc., the work efficiency is often reduced, the cost is increased, and the cost is increased.

  In addition, when constructing two or more high retaining walls using conventional L-shaped concrete blocks for one-stage retaining walls, for safety reasons, to strengthen the connection between the lower and upper L-shaped concrete blocks. In addition, after the upper end of the lower stage is firmly solidified with concrete, earth and sand, quarrying, etc., when placing the upper L-shaped concrete block, a sufficient distance is maintained between the upper end of the lower block and the lower end of the upper block. The need arises, the area corresponding to the inclined surface of the retaining wall increases, and the effective flat area decreases. In addition, it is necessary to newly determine the position, height, inclination and direction of the upper L-shaped concrete block as in the installation work of the lower L-shaped concrete block.

Means for solving the problem

  Although the L-type concrete block for loading according to the present invention can be used for a one-stage retaining wall, it is mainly used to construct a plurality of retaining walls having two or more stages. That is, in an L-shaped concrete block for constructing a retaining wall composed of a vertical wall portion, an inclined bottom plate portion whose one end is connected to the vertical wall portion, and a connection support portion connected to the rear surface of the vertical wall portion and the upper surface of the inclined bottom plate portion A wall part has a concave groove which fits the lower end part of the perpendicular | vertical wall part of the L-shaped concrete block for accumulation piled up on an upper surface at the upper end side, and provides the support shelf part supported by a shelf support part.

  The dedicated foundation member used for the L-type concrete block for loading is formed into a plate shape or a square-shaped shape for stable installation, and on the upper surface side of one end side of the L-type concrete block for loading at the upper stage. A lower end insertion groove for inserting the lower end portion of the vertical wall portion is formed, and the lower surface side is inserted into a concave groove provided on the upper surface of the support shelf portion on the back of the vertical wall portion of the lower-stage L-type concrete block. The fitting ridge is provided, and the other end side is provided with a leading end stop groove for fitting the leading end portion of the inclined bottom plate portion of the upper-stage L-type concrete block on the upper surface side.

The invention's effect

  Since the L-shaped concrete block for loading according to the present invention is a general dimension without increasing the height dimension, it is easy to form, carry in, move, and stack up multiple stages. In particular, since the lower end of the vertical wall portion of the upper L-type concrete block to be stacked is inserted into the concave groove of the shelf support portion of the lower L-type concrete block for stacking, it is possible to firmly connect The position, height, inclination, direction, etc. can be determined accurately and efficiently. Furthermore, the upper end portion of the lower vertical wall portion and the lower end portion of the upper vertical wall portion are overlapped and connected, so that the area corresponding to the inclined portion is reduced and the maximum effective use area is obtained. Therefore, it is possible to efficiently construct a solid multi-stage retaining wall, and it has an economic effect of reducing the construction cost of the high retaining wall.

  Hereinafter, an embodiment of a concrete block for loading according to the present invention will be described based on FIGS. 1 to 3, and an embodiment of a dedicated foundation member according to the present invention will be described based on FIGS. 4 and 5. An example of its use will be described with reference to FIGS.

  FIG. 1 shows a perspective view of an embodiment of a stacked L-shaped concrete block for building a multi-stage retaining wall according to the present invention, and FIG. 2 shows a side view thereof. The L-shaped concrete block 1 for loading includes an inclined bottom plate portion 3 that is connected to the vertical wall portion 1 at an angle difference of 105 degrees from the vertical wall portion 2, and a back surface of the vertical wall portion 2 and the inclined bottom plate portion 3. It is comprised by the connection support part 4 connected with an upper surface. On the back side of the upper portion of the vertical wall portion 2, a support shelf 5 is projected at an appropriate distance from the upper end, and on the upper surface of the support shelf 5, the vertical wall of the stacked L-type concrete block 1 to be stacked is stacked. A concave groove 7 for inserting the lower end of the portion 2 is provided, and the support shelf 5 is firmly supported by the shelf support 6.

  Since the dimension from the upper end of the connection position of the support shelf 5 connected to the vertical wall 2 is an overlapping portion of the lower end of the L-shaped concrete block 1 stacked on the upper stage and the upper end of the lower L-shaped concrete block 1. The dimensions are set according to the overall dimensions, the set inclination, the number of stacked stages, and the like. The inclined bottom plate portion 4 is provided with a plurality of concrete filling holes 8 in the same manner as in the past in order to make it easier to inject concrete below the bottom surface during construction.

  FIG. 3 shows the shape of the concave groove 7 provided in the support shelf 5 in order to make it easy to change the installation angle of the upper L-type concrete block 1 for stacking when the inclination of the stacked building retaining wall is changed during construction. It is a side view of the Example formed in the semicircle shape. The shape of the concave groove 8 is effective to freely set the installation inclination angle while filling the concrete when the upper vertical wall 2 is inserted.

  4 and 5 show an embodiment of a dedicated foundation member according to the present invention. Since the dedicated foundation member 11 is a foundation for mounting the L-type concrete block for loading, it is configured in a shape that is easy to be stable on the foundation surface, such as a plate shape or a square shape, and the loading L is on the upper surface side at one end side. The lower end fitting groove 12 for fitting the lower end portion of the vertical wall portion 2 of the concrete block is formed, and the fitting ridge 14 to be fitted into the concave groove 7 on the upper surface of the support shelf 5 on the back surface of the vertical wall portion 2 on the lower surface side. And a tip stop groove 13 into which the tip portion of the inclined bottom plate portion 3 is fitted is provided on the other end side. FIG. 4 shows an example of a dedicated base member configured in a plate shape, and a concrete filling hole 15 is drilled in the center portion so that the concrete can be easily poured into the bottom surface during construction. FIG. 5 shows an example of a dedicated base member formed in a square shape.

  FIG. 6 is a usage example in which a two-stage retaining wall is constructed using the L-shaped concrete block for loading and the foundation member 9 according to the present invention. The base member 9 to be used is a general member, but a base member provided with a fitting concave groove into which the lower end portion of the vertical wall portion 2 is fitted is effective as shown in the figure. After installing the building-up L-shaped concrete block 1 on the foundation member 9, the entire back of the vertical wall portion 2 including the inclined bottom plate portion 3 and the connection support portion 4 is substantially up to the height of the support shelf portion 5. The first stage is constructed by solidifying with crushed stone, earth and sand 10 or the like.

  The lower end of the second-stage L-shaped concrete block 1 is inserted into the concave groove 7 on the upper surface of the support shelf 5 on the back side of the vertical wall 2 of the first-stage L-shaped concrete block 1. And install. After the second stage installation, the entire rear side including the inclined bottom plate portion 3 and the connecting support portion 4 on the back side of the loading L-shaped concrete block 1 is made of concrete, crushed stone, earth and sand 10, etc. Until the surface is built on land or road. Therefore, the installation of the second-stage loading L-shaped concrete block 1 not only determines the position, height, inclination, direction, etc., but also makes the construction extremely efficient, and the first stage is on the second stage. Accurately fits and strengthens the connection. Further, since the upper end of the first step and the lower end of the second step overlap each other, the area corresponding to the inclined surface is reduced and the effective use area is maximized.

  FIG. 7 is a usage example in which a two-stage retaining wall is constructed by using the L-shaped concrete block 1 for loading and the dedicated foundation member 11 according to the present invention. A first-stage dedicated foundation member 11 is installed on a foundation surface made of concrete, crushed stone, earth and sand, etc. 10, and the first-stage loading L-type concrete block 1 arranged on the first-stage dedicated foundation member 11 is provided on the vertical wall 2. The lower end portion is inserted into the lower end insertion groove 12 on the upper surface side of the dedicated base member 11, and the distal end portion of the inclined bottom plate portion 3 is inserted into the distal end stop groove 13. After that, the entire construction of the L-shaped concrete block 1 for loading is substantially the same as in FIG. 6, and is firmly solidified with earth and sand up to the height of the support shelf 5, and the surface is solidified with concrete, crushed stone, earth and sand 10, etc. Install the base member 11 for the stage.

  The installation of the second-stage dedicated foundation member 11 is performed by inserting the fitting protrusion 14 formed on the lower surface into the concave groove 7 of the support shelf 5 on the back side of the first-stage L-shaped concrete block 1. The position of the member 11 is determined. The second-stage loading L-shaped concrete block 1 is stacked on the dedicated foundation member 11. In this case, as in the first stage, the vertical wall portion of the second-stage loading L-shaped concrete block 1 is used. The lower end portion of 2 is inserted into the lower end insertion groove 12 of the dedicated base member 11 at the second stage, and the distal end portion of the inclined bottom plate portion 3 is inserted into the front end stop groove 13. Accordingly, it is easy to determine the position, height, inclination, direction, and the like of the second stage concrete block 1 for loading, and the overall vertical connection is the support shelf portion of the first stage L concrete block 1 for construction. 5 and the fitting of the second-stage dedicated foundation member 11 with the fitting protrusion 14, the lower end fitting groove 12 of the second-stage dedicated foundation member 11 and the vertical end of the second-stage loading L-shaped concrete block 1 It is possible to construct a safe two-stage retaining wall by firmly connecting the parts.

  It is a perspective view of the Example of the L-shaped concrete block for buildup concerning this invention.   It is a side view of the Example of the L-shaped concrete block for loading based on this invention.   It is a side view of the Example which formed the ditch | groove of the upper surface of the support shelf part of the L type concrete block for loading which concerns on this invention in semicircle shape.   It is a perspective view of the Example which formed the exclusive base member which concerns on this invention in plate shape.   It is a perspective view of the Example which formed the exclusive base member which concerns on this invention in the shape of a square.   It is a longitudinal cross-sectional view of the usage example which piled up the L-shaped concrete block for a buildup concerning this invention in two steps.   It is a longitudinal cross-sectional view of the usage example piled up in 2 steps | paragraphs using the L-shaped concrete block for a buildup concerning this invention, and an exclusive foundation member.

DESCRIPTION OF SYMBOLS 1 L-type concrete block for loading 2 Vertical wall part 3 Inclined bottom board part 4 Connection support part 5 Support shelf part 6 Shelf support part 7 Groove 8 Concrete injection hole 9 Foundation member 10 Concrete, crushed stone, earth and sand, etc. 11 Dedicated foundation member 12 Lower end insertion groove 13 End stop groove 14 Fitting protrusion 15 Concrete filling hole

Claims (2)

  In an L-shaped concrete block for constructing a retaining wall, comprising a vertical wall portion, an inclined bottom plate portion whose one end is connected to the vertical wall portion, and a connection support portion connected to the rear surface of the vertical wall portion and the upper surface of the inclined bottom plate portion. The support shelf which has the ditch | groove which fits the lower end part of the vertical wall part of the L-shaped concrete block for accumulation piled up on the upper stage side, or the fitting protrusion projected from the lower surface side of the exclusive foundation member in the upper end side of L-type concrete block for loading, characterized by having a part.   In the base member used for the L-type concrete block for retaining wall construction, the upper part of the L-type concrete for installation on the upper surface is installed on the upper surface side at one end of the dedicated base member formed in the shape of a plate or square that stabilizes the installation. A lower-end insertion groove for inserting the lower end portion of the vertical wall portion of the block is formed, and a concave groove provided on the upper surface of the support shelf portion on the back surface of the vertical wall portion of the lower-stage L-type concrete block on the lower side is formed. L for loading, characterized in that a fitting ridge to be fitted is provided, and the other end side is provided with a leading end stop groove for fitting the leading end portion of the inclined bottom plate portion of the upper L-type concrete block on the upper surface side. Dedicated foundation for concrete block.

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