JP2010242474A - Construction method for building multi-stage retaining wall using l-concrete block for stacking - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve problems of a conventional construction method for building a multi-stage retaining wall using L-concrete blocks for stacking in the building of a retaining wall such as a boundary wall construction in housing land building wherein the construction is not efficient since the block is restricted to use for the building of a one-stage retaining wall, and the interconnection of L-concrete blocks on each stage in the vertical direction has a safety problem. <P>SOLUTION: This L-concrete block 1 for stacking includes a vertical wall part 2 having a support shelf part 5, a tilted bottom plate part 3, and a connection support part 4. The rear surface side of a first stage L-concrete block 1 for stacking installed on a base member 9 fixed to a base surface is fixed with concrete, sediment, crushed stone, and the like 10 generally up to the position of the support shelf part 5, and the surface of the rear surface part is built with concrete. The lower end part of the vertical wall part 2 of a second stage L-concrete block 1 for stacking which is next stacked is fitted into the recessed groove of the support shelf part of the first stage block 1, and the rear surface side thereof is fixed with concrete, sediment, crushed stone, and the like 10 generally up to the upper surface. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention uses an L-shaped concrete block for building up a retaining wall for the construction of retaining walls such as the prevention of collapsing of boundary walls, road shoulders and rock walls of residential land development, and a plurality of high retaining walls It relates to the construction method to be built.

  The conventional L-shaped concrete block for constructing a retaining wall is for a relatively low one-stage retaining wall and is not configured to be connected in the vertical direction. As shown in FIG. 8, the construction of the retaining wall is performed by the vertical wall portion of the conventional L-shaped concrete block 16 on the conventional foundation member 17 fixed on the foundation surface made of concrete, crushed stone, earth and sand 10 or the like. It was a construction method in which the retaining wall was constructed by installing the lower end of the material and embedding the back side with concrete, crushed stone, earth and sand 10 or the like. Therefore, it is difficult to construct a high retaining wall that piles up multiple stages, and in order to use it for a high retaining wall, it is required to specially make the L-shaped concrete block larger in height. It was. However, when the size of the L-shaped concrete is increased, not only the cost of molding, manufacturing, storing and transporting the concrete is increased, but also the construction efficiency of the retaining wall construction work site is remarkably lowered. Therefore, because there are dimensional limits, the high walls become stone walls, and conventional L-shaped concrete blocks that are difficult to stack in multiple stages were not used. There was no reliable construction method.

Problems to be solved by the invention

  Most of the construction methods using the conventional L-shaped concrete block for retaining wall construction are limited to one-stage retaining wall construction. In the case of constructing a retaining wall having a high height, a specially manufactured L-shaped concrete block having a large height was used because the L-shaped concrete block was not structured to be stacked and connected. Therefore, L-type concrete blocks used for high retaining wall construction are expensive in concrete molding at the time of production, storage after completion, transportation to the work site, construction construction, etc., and work efficiency is also reduced in construction construction However, the construction cost will increase.

  When constructing and constructing multi-stage high retaining walls of two or more levels using conventional L-shaped concrete blocks for single-level retaining walls, in order to make the connection between the lower and upper L-shaped concrete blocks strong and safe The bottom of the lower L-shaped concrete block is firmly solidified with concrete, earth and sand, quarrying, etc. The position of the upper L-shaped concrete block to be arranged thereafter needs to have a sufficient distance between the upper end of the lower block and the lower end of the upper block. Therefore, the area corresponding to the inclined surface of the retaining wall is increased, and the effective plane area is reduced. In addition, the upper L-shaped concrete block, like the installation work of the lower L-shaped concrete block, needs to determine the position, height, inclination, direction, etc. separately, and the construction becomes complicated and inefficient.

Means for solving the problem

  The construction method using the L-shaped concrete block for loading according to the present invention mainly relates to the construction construction of a plurality of retaining walls having two or more stages. In other words, the L-type concrete block for loading used in the construction method of the present invention is connected to the vertical wall portion, the inclined bottom plate portion whose one end is connected to the vertical wall portion, the back surface of the vertical wall portion, and the upper surface of the inclined bottom plate portion. The vertical wall portion is fitted with a fitting ridge projecting on the lower end portion of the vertical wall portion of the L-shaped concrete block stacked on the upper surface or on the lower surface side of the dedicated base member. A support shelf having a concave groove and supported by the shelf support is provided.

  The dedicated foundation member used for the construction method of the present invention together with the L-shaped concrete block for construction is formed in a stable plate shape or square shape, and on the upper surface side, the vertical wall portion of the L-shaped concrete block for loading is placed on one end side. A lower end insertion groove into which the lower end portion is inserted is formed, and a distal end stop groove into which the distal end portion of the inclined bottom plate portion of the loading L-shaped concrete block is fitted is provided on the other end side. Further, on the lower surface side, a fitting ridge that protrudes into a groove on the upper surface of the support shelf of the loading L-shaped concrete block is provided.

  The construction method for constructing a multi-stage retaining wall according to the present invention is constituted by a vertical wall portion, an inclined bottom plate portion, and a connecting support portion, and the vertical wall portion is located at the upper end side at the upper end side and at the lower end of the vertical wall portion of the L-shaped concrete block for loading. The above-described L-shaped concrete block for loading provided with a support shelf having a recessed groove into which the portion is inserted is used. First, fix the back side of the first-stage L-type concrete block installed on the foundation member fixed to the foundation surface of the retaining wall construction to the position of the support shelf with concrete, earth and sand, quarrying, etc. Next, the lower end portion of the vertical wall portion of the second-stage stacking L-shaped concrete block to be stacked is fitted and fixed in the recessed groove of the support shelf portion, until the support shelf portion is substantially hidden on the back side. It is a construction method in which concrete, crushed stone, earth and sand, etc. are embedded and fixed.

  Further, another construction method for constructing a plurality of retaining walls according to the present invention uses the above-described L-shaped concrete block for loading and a dedicated foundation member. First, the first-stage L-type concrete block to be installed on the first-stage dedicated foundation member fixed to the foundation surface of the retaining wall construction has the lower end of the vertical wall portion inserted into the lower-end fitting groove of the dedicated foundation member. The tip end of the inclined bottom plate portion is inserted and fixed in the leading end stop groove, and the back side is fixed to the position of the support shelf portion by means of clay, earth and sand, quarrying or the like in the same manner as described above. Thereafter, the fitting ridges of the second-stage dedicated base member are inserted into the concave grooves of the first-stage support shelf, and one end side of the second-stage dedicated foundation member is supported by the support shelf, and installed. The second-stage L-type concrete block to be stacked on top of that is fitted with the lower end of the vertical wall portion into the lower end insertion groove of the second-stage dedicated foundation member, and with the lower end of the inclined bottom plate portion in the end stop groove. It is a construction method in which concrete, crushed stone, earth and sand, etc. are embedded and fixed to a position where the support shelf is substantially hidden on the back side, by inserting and fixing.

The invention's effect

  The construction method for constructing a multi-stage retaining wall according to the present invention is a general dimension without increasing the height dimension of the L-shaped concrete block to be used. is there. In particular, the stacking construction is a construction method in which the lower end portion of the vertical wall portion of the upper stacking L-shaped concrete block to be stacked is inserted into the concave groove of the shelf supporting portion of the lower stacking L-shaped concrete block. Or, the upper ridge is inserted into the lower end insertion groove on the upper surface of the dedicated base member by fitting the fitting ridge on the lower surface of the lower dedicated base member into the concave groove of the shelf support portion of the lower level L-shaped concrete block. This is a construction method that also uses a dedicated base member for fitting the lower end of the vertical wall portion of the L-shaped concrete block. Therefore, the upper and lower L-type concrete blocks for stacking can be firmly connected to each other, and position, height, inclination, direction determination, etc. can be performed accurately and efficiently. Further, by fitting and connecting the lower vertical wall portion and the upper vertical wall portion in an overlapping state, the area corresponding to the inclined portion is reduced and the maximum effective use area is obtained. This construction method is not limited to the construction of a two-stage retaining wall, but is applicable to the construction of a multi-stage retaining wall. Therefore, the construction method enables efficient construction of a solid multi-stage retaining wall, and has an economic effect of reducing the construction cost of the high retaining wall.

  Hereinafter, an embodiment of a construction method for constructing a multi-stage retaining wall according to the present invention will be described based on FIG. 2, FIG. 3, FIG. 6, and FIG. 7, and a concrete block for loading used in the construction method according to the present invention will be described. An embodiment of the dedicated foundation member will be described based on FIGS. 1, 4, and 5.

  FIG. 1 shows an embodiment of an L-shaped concrete block 1 for use in construction of a multi-stage retaining wall construction according to the present invention, wherein the vertical wall 2 and one end are connected to the vertical wall 1 with an angle difference of 105 degrees. And a connecting support portion 4 connected to the back surface of the vertical wall portion 2 and the upper surface of the inclined bottom plate portion 3. 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.

  The distance from the upper end of the connection position of the support shelf 5 connected to the vertical wall 2 is the lower end of the loading L-shaped concrete block 1 stacked on the upper stage and the upper end of the lower loading L-shaped concrete block 1. Therefore, the dimensions are set according to the overall dimensions, the set inclination, the number of stacked stages, and the like. A plurality of concrete filling holes 8 are drilled in the inclined bottom plate portion 4 in the same manner as in the past in order to facilitate the pouring of concrete under the bottom surface during construction.

  FIG. 2 shows an embodiment in which the first stage is constructed using the L-shaped concrete block 1 for loading and the foundation member 9 in the construction method according to the present invention. As the foundation member to be used, a conventional foundation member is used, but the foundation member 9 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. The construction method is that the L-shaped concrete block 1 for loading is installed on the foundation member 9, and then the entire back side of the vertical wall portion 2 including the inclined bottom plate portion 3 and the connection support portion 4 is substantially concrete up to the vicinity of the support shelf portion 5. The first stage of the multi-stage retaining wall is constructed by solidifying with 10 or the like such as crushed stone, earth and sand.

  FIG. 3 shows a state of an embodiment of the construction in which the second-stage concrete block 1 is stacked on the first stage of the form shown in FIG. When installing the L-type concrete block 1 for loading on the second stage on the concrete, crushed stone, earth and sand, etc. 10 which is substantially solid behind the vertical wall part 2 on the first stage and hardened to the height of the support shelf part 5, The lower end portion of the vertical wall portion 2 of the second-stage loading L-shaped concrete block 1 is provided on the upper surface of the support shelf 5 behind the vertical wall portion 2 of the first-stage loading L-shaped concrete block 1. Fit into the groove 7 and install. After installation of the second stage, the vertical wall in which the support shelf 5 is hidden by concrete, crushed stone, earth and sand 10, etc. behind the inclined bottom plate 3 on the back side of the L-shaped concrete block 1 for loading and the connection support 4 Harden up to the upper end of the part 2 and create the surface 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, and the upper end of the first-stage vertical wall 2 and the lower end of the second-stage vertical wall 2 overlap, so the area corresponding to the inclined surface is reduced and the effective use area is reduced. Maximize.

  FIG.6 and FIG.7 is an Example of the construction which constructs | assembles a two-stage retaining wall using the L-shaped concrete block 1 for loading utilized for this invention, and the exclusive foundation member 11. FIG. The building-up L-type concrete block 1 in this embodiment is the same as that in the above embodiment, but the dedicated base member 11 is configured in a plate shape as shown in FIG. 4 or a square material shape as shown in FIG. On the upper surface side, a lower end insertion groove 12 for inserting the lower end portion of the vertical wall portion 2 of the stacking L-shaped concrete block on one end side, and a front end stop groove 13 for inserting the distal end portion of the inclined bottom plate portion 3 on the other end side. Provided on the lower surface side on the one end side is a fitting ridge 14 that fits into the groove 7 on the upper surface of the support shelf 5 on the back side of the vertical wall 2. The special base member 11 having a large plate-like area shown in FIG. 4 is preferably provided with a concrete filling hole 15 in the central portion so that the concrete can be easily poured into the bottom surface during construction.

  FIG. 6 shows a construction example of the construction of the first stage of a multi-stage retaining wall using an L-shaped concrete block 1 for loading and a dedicated foundation member 11, and is constructed on a foundation surface made of concrete, crushed stone, earth and sand 10, etc. The first-stage stacking L-type concrete block 1 on which the stage-specific dedicated base member 11 is installed and disposed thereon is arranged such that the lower end portion of the vertical wall portion 2 is the lower end on the upper surface side of the first-stage dedicated base member 11. While inserting in the insertion groove 12, the front-end | tip part of the inclination bottom board part 3 is inserted in the front-end | tip stop groove | channel 13. As shown in FIG. In the subsequent construction, the entire back of the loading L-shaped concrete block 1 is substantially the same as in FIG. 2, and is solidified with concrete, crushed stone, earth and sand 10 to the height of the support shelf 5. The second-stage dedicated base member 11 is installed on the surface.

  FIG. 7 shows a state of the working example in which the second-stage loading L-shaped concrete block 1 is stacked on the first-stage configuration shown in FIG. The installation of the second-stage dedicated base member 11 is performed by inserting the fitting ridge 14 formed on the lower surface into the groove 7 of the support shelf 5 on the back side of the first-stage stacking L-type concrete block 1. Determine its position. The second-stage loading type L-shaped concrete block 1 is stacked on the second-stage dedicated foundation member 11, and in this case, as in the first stage, the lower end of the vertical wall 2 is placed on the second-stage The tip end portion of the inclined bottom plate portion 3 is inserted into the tip end stop groove 13 in the lower end insertion groove 12 of the dedicated base member 11. Accordingly, the position, height, inclination, and direction can be easily determined, and the entire vertical connection is performed by fitting the support shelf 5 of the first-stage stacking L-shaped concrete block 1 and the second-stage dedicated foundation member 11. By fitting with the joint ridge 14, the entire upper and lower sides are connected by fitting the lower end fitting groove 12 of the second stage dedicated base member 11 and the lower end part of the vertical wall part 2 of the second stage L-shaped concrete block 1. A strong two-stage retaining wall can be constructed.

  The construction of a multi-stage retaining wall with two or more stages is carried out by stacking the third stage on the second stage by the same construction method as the construction of stacking the second stage on the first stage shown in FIGS. Furthermore, the fourth stage is stacked on the third stage. Since the multi-stage retaining wall is constructed in this way, the advantage of the construction method of the present invention becomes more remarkable as the height of the retaining wall construction is higher.

  It is a perspective view of the Example of the L-shaped concrete block for a pile utilized for the construction method of the multistage retaining wall construction which concerns on this invention.   It is a longitudinal cross-sectional view of the construction state which installed the 1st step | paragraph using the foundation member in the L-shaped concrete block for a loading utilized for the construction method which concerns on this invention.   It is a longitudinal cross-sectional view of the construction state which piled up the L-shaped concrete block for loading utilized for the construction method which concerns on this invention in two steps.   It is a perspective view of a plate-shaped exclusive foundation member used for the construction method concerning the present invention.   It is a perspective view of the square-shaped exclusive base member utilized for the construction method which concerns on this invention.   It is a longitudinal cross-sectional view of the construction state which installed the 1st step | paragraph using the L-shaped concrete block for loading utilized for the construction method which concerns on this invention, and an exclusive foundation member.   It is a longitudinal cross-sectional view of the construction state which piled up the L-shaped concrete block for loading utilized for the construction method which concerns on this invention, and an exclusive foundation member in two steps.   It is a longitudinal cross-sectional view of the conventional construction state which installed the conventional L-shaped concrete block.

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 fitting groove 13 End stop groove 14 Fitting protrusion 15 Concrete filling hole 16 Conventional retaining wall L-shaped concrete block 17 Conventional foundation member

Claims (2)

  Consists of a vertical wall part, an inclined bottom plate part, and a connecting support part, and the vertical wall part is fitted to the lower end part of the vertical wall part of the L-type concrete block for stacking stacked on the upper end side or the lower surface side of the dedicated foundation member The first-stage product installed on the foundation member fixed to the foundation surface of the retaining wall construction by the construction method using the L-shaped concrete block for loading provided with the supporting shelf part having the concave groove to insert the ridge. The rear side of the upper L-shaped concrete block is fixed to the position of the support shelf with concrete, earth and sand, quarrying, etc. Insert the bottom end of the vertical wall of the concrete block into the concave groove of the support shelf of the first-stage concrete block, and fix the back side to the top end with concrete, crushed stone, earth and sand, etc. For loading, characterized by creation Construction methods of a plurality of stages retaining wall built to utilize the type concrete block.   Consists of a vertical wall part, an inclined bottom plate part, and a connecting support part, and the vertical wall part is fitted to the lower end part of the vertical wall part of the L-type concrete block for stacking stacked on the upper end side or the lower surface side of the dedicated foundation member An L-shaped concrete block for loading provided with a support shelf having a recessed groove for inserting a ridge, and a lower end insertion recessed groove for inserting a lower end portion of a vertical wall portion on the upper surface side on one end side, and a lower surface side Construction using a dedicated base member with a fitting ridge that fits into the groove on the upper surface of the support shelf on the back of the vertical wall, and a tip stop groove that fits the tip of the inclined bottom plate on the upper surface of the other end The bottom end of the vertical wall of the lower L-type concrete block is inserted into the lower end insertion concave groove of the lower dedicated foundation member fixed to the foundation surface of the retaining wall construction, and the bottom plate is inclined to the front end stop groove. Insert and fix the tip of the unit, and adjust the back side to the upper end position. L, earth and sand, quarrying, etc., and then fitting upper ridges into the grooves in the lower support shelf, installing the upper dedicated foundation members, and then stacking the upper L type In the concrete block, the lower end of the vertical wall portion is inserted into the lower end insertion groove of the upper dedicated base member, and the tip portion of the inclined bottom plate portion is inserted into the end stop groove. Construction method of multi-stage retaining wall construction using L-shaped concrete block for loading, which is characterized by solidifying with stone, crushed stone, earth and sand, etc.

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