KR20170000551U - Foundation block for retaining wall - Google Patents

Abstract

The present invention relates to a base block for a retaining wall, and more particularly, to a base block for a retaining wall capable of preventing damage or breakage of a foundation block during drilling of a drilling hole for installing an underground anchor, The present invention relates to a foundation block for a retaining wall which can improve the workability and the rigidity and quality of the retaining wall because the angle of the anchor can be freely changed.
A base block for a retaining wall according to the present invention is a base block for a retaining wall, comprising: a base block body which is seated on a base and formed into a square pillar shape; A block insertion groove formed on the upper surface of the base block body so as to be inserted along the longitudinal direction to insert the retaining wall block; And an injection passage formed in the base block body for injection of the grouting material, wherein the injection passage includes: a lateral passage formed in the bottom surface of the base block body so as to be parallel to the block insertion groove along the longitudinal direction; And a plurality of longitudinal passages perforated in the vertical direction from the block insertion grooves along the height direction of the base block body to communicate with the lateral passages, wherein the longitudinal passages and the lateral passages are connected to the base for the retaining wall And a sealing barrier is further formed at both ends of the transverse passage so as to improve the rigidity of the block and the rigidity of the joint with the underground anchor.

Description

{FOUNDATION BLOCK FOR RETAINING WALL}

The present invention relates to a base block for a retaining wall, and more particularly, to a base block for a retaining wall capable of preventing damage or breakage of a foundation block during drilling of a drilling hole for installing an underground anchor, The present invention relates to a foundation block for a retaining wall which can improve the workability and the rigidity and quality of the retaining wall because the angle of the anchor can be freely changed.

In general, the construction of roads, housing complexes, waterways, and embankment construction will be carried out in order to prevent the collapse due to the loss of soil to the gross lands or incisions.

For example, as shown in Korean Patent No. 10-0696994, a retaining wall construction method using a block, a coupler and a geogrid is widely applied to a castle land.

The cut-away retaining wall is constructed in a structure similar to that of the base block for multi-stage retaining wall disclosed in Korean Patent Registration No. 10-0387998 and the multi-stage retaining wall foundation foundation reinforcement method using the same.

The retaining wall disclosed in the above-mentioned Registration No. 10-0387998 has a structure in which the upper-layer retaining wall 100a is horizontally picked up at the upper position of the corresponding position where the upper-wall retaining wall 100a is to be installed, A foundation block installing step of installing the foundation blocks 1 in a row; A drilling hole drilling step of drilling vertical drilling holes 3 as depths in the upper foundation foundation through the underground anchor installation passages 30 of the foundation block 1; The long bolt 4a is penetrated into the drilling hole 3 in the vertical direction through the underground anchor installation passage 30 of the foundation block 1 and the grouting solution 4b is injected into the drilling hole 3, And the installation step of the underground anchor for reinforcement installed on the foundation ground is sequentially carried out.

As shown in FIG. 1B, the base block used for the retaining wall includes a support body 10 formed of a concrete and having a predetermined cross-sectional shape, A PC block mounting groove 20 formed on the upper surface of the receiving body 10 so as to be longitudinally formed; The underground anchor installation passages 30 are formed by a plurality of long bolts 4a and a plurality of underground anchor installation passages 30 extending upward and downward from the PC block assembly groove 20, 4b are formed in the upper foundation foundation so as to have a diameter enough to accommodate the grouting solution 4b so that the long bolts 4a are penetrated through the foundation anchor installation passages 30, So that the underground anchor 4 can be installed.

According to the above-mentioned registered patent registration No. 10-0387998, it is advantageous in that a large-scale safety accident that collapses the upper-stage retaining wall can be reduced by surely reinforcing the foundation ground to be provided with the upper-stage retaining wall at the time of construction of the retaining wall, And the like.

First, according to the above-mentioned Registration No. 10-0387998, the foundation block 1 is installed in the foundation foundation and the drilling hole 3 is inserted through the underground anchor installation passage 30, So that it is difficult and time-consuming to work, and there is a problem that the foundation block is damaged by vibration and impact in the process of drilling the drilling hole.

Second, according to the above-mentioned Registration No. 10-0387998, only the long bolt 4a and the grout liquid 4b are formed through the underground anchor installation passage 30 formed in a predetermined amount in a specified position of the foundation block 1 The anchor (4) is installed by the method of inserting and injecting the underground anchor (4). In other words, since the installation position of the underground anchor 4 can be made only at the formation position of the underground anchor installation passage 30, it is impossible to change the installation position of the underground anchor and to change or change the installation quantity of the underground anchor, There is a disadvantage in that the base block can not be supported and safety is lacking.

Third, in the foundation block 1 according to the above-mentioned Registration No. 10-0387998, the underground anchor installation passage 30 is formed in the vertical direction so that the excavation hole 3 can be drilled only in the vertical direction, As a result, since the underground anchor 4 can be installed only in the vertical direction, it is only possible to perform limited reinforcement in the vertical direction, and it is impossible to change the inclination of the underground anchor, so that the rigidity of the retaining wall becomes weak.

Fourthly, according to the above-mentioned Registration No. 10-0387998, since the grout solution 4b is injected through the underground anchor installation passage 30 of the foundation block 1, Since the concrete mortar which is the grout liquid is not injected between the bottom surfaces of the foundation block 1 and is not integrated with each other, the supporting strength of the foundation block 1 is weak, and it is difficult to inject the grout liquid.

Korean Patent Registration No. 10-0387998 "Base Block for Multi-Stage Retaining Wall and Reinforcement Method of Upper Layer of Multi-Stage Retaining Wall Using the Base Block & Korean Patent Registration No. 10-0770250 "Retaining wall construction method and retaining wall structure therefor"

The present invention has been made in view of the above-described subject matter, and it is an object of the present invention to prevent damage or breakage of a foundation block during drilling of a drilling hole for installing an underground anchor, And an object of the present invention is to provide a base block for a retaining wall which can improve the workability and rigidity and quality of a retaining wall.

In order to achieve the above object, a base block for a retaining wall according to the present invention is a base block for a retaining wall, comprising: a base block body which is seated on a base and formed into a square pillar shape; A block insertion groove formed on the upper surface of the base block body so as to be inserted along the longitudinal direction to insert the retaining wall block; And an injection passage formed in the base block body for injection of the grouting material, wherein the injection passage includes: a lateral passage formed in the bottom surface of the base block body so as to be parallel to the block insertion groove along the longitudinal direction; And a plurality of longitudinal passages perforated in the vertical direction from the block insertion grooves along the height direction of the base block body to communicate with the lateral passages, wherein the longitudinal passages and the lateral passages are connected to the base for the retaining wall And a sealing barrier is further formed at both ends of the transverse passage so as to improve the rigidity of the block and the rigidity of the joint with the underground anchor.

According to the base block for retaining wall according to the present invention, since the fork concrete layer is formed before installing the base block and the underground anchor construction step is directly performed on the forbidden concrete layer, the work is easy and the working time is shortened, It is possible to prevent the base block from being broken due to vibration and impact in the punching process, thereby shortening the construction period and improving the workability and the construction quality.

According to the base block for retaining wall according to the present invention, the interference phenomenon by the base block is fundamentally prevented so that the quantity of excavation holes can be drilled in various quantities in accordance with the characteristics of the ground and the site conditions, It is possible to construct underground anchors by drilling in diagonal directions as well as in directions. In addition, it is possible to form a single supporting frame by the grouting material filled and cured inside the excavation hole drilled in the ground, the transverse passage and the longitudinal passage, and being integrated with the discarded concrete layer to firmly support the base block for retaining wall The supporting stiffness of the foundation block can be reinforced, so that the stiffness and stability of the retaining wall to be installed can be remarkably increased.

FIGS. 1A and 1B are views for explaining a foundation block for a retaining wall and a foundation ground reinforcement method for a retaining wall,
2 is a perspective view illustrating a base block for a retaining wall according to an embodiment of the present invention,
FIG. 3 is a perspective view showing a foundation foundation of a retaining wall constructed using a foundation block for a retaining wall according to an embodiment of the present invention;
FIG. 4 is a process diagram for explaining a method of reinforcing a base ground reinforcement of a retaining wall using a base block for a retaining wall according to an embodiment of the present invention. FIG.
FIG. 5 is a vertical sectional view of a foundational ground according to an embodiment of the present invention,
6 is a schematic longitudinal sectional view showing a retaining wall structure to which a foundation ground reinforcement method for a retaining wall using a base block for a retaining wall according to an embodiment of the present invention is applied;
FIG. 7 is a view for explaining a connection structure of a grouting material in a state in which a base ground reinforcement method for a retaining wall using a base block for a retaining wall according to an embodiment of the present invention is completed; FIG.
8 is a perspective view showing a modified example of a base block for a retaining wall according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 2 is a perspective view showing a base block for a retaining wall according to an embodiment of the present invention, and FIG. 3 is a perspective view showing a base floor of a retaining wall constructed using a base block for a retaining wall according to an embodiment of the present invention.

2 and 3, a base block 1 for a retaining wall according to an embodiment of the present invention includes a base block body 11, It is possible to prevent damage or breakage of the foundation block at the time of drilling of the excavation hole for installing the underground anchor in the process of reinforcing the foundation foundation by forming the insertion groove 12 and the injection passage 13 for injecting the grouting material It is possible to freely adjust the installation position of the underground anchor and change the installation angle of the underground anchor, as well as to freely change the installation angle of the underground anchor.

The base block body 11 has various shapes according to the structure and the shape of the retaining wall block 3 (see FIG. 6) provided on the base block base block as a main body block of the retaining wall that is seated on the bottom surface b of the foundation foundation However, in the present embodiment, it is formed in a square pillar shape so as to support a substantially rectangular plate-shaped precast panel applied to the retaining wall block 3.

The block insertion groove 12 is formed in the upper portion of the base block body 11 so that the retaining wall block 3 is inserted therein. The block insertion groove 12 is formed on the upper surface of the base block body 11 so that the lower end portion of the pre- And is formed along the longitudinal direction.

The injection passage 13 is formed in the base block body 11 so as to serve as a passage for injecting the grouting material g. In this embodiment, the injection passage is provided with a foundation block 1 And the grouting material (g) for integrating the underground anchor (2) can be injected.

For this purpose, the injection passage 13 is formed in the bottom surface of the base block body 11 in such a manner that a lateral passage 13a (not shown) which is upwardly recessed along the longitudinal direction so that the upper end portion of the longitudinal member 2a of the underground anchor 2 is inserted, And a plurality of longitudinal passages 13b extending in the height direction of the base block body 11 so as to inject the grouting material into the lateral passages 13a.

More specifically, a plurality of longitudinal passages 13b are formed at regular intervals from the block insertion groove 12 so as to communicate with the lateral passages 13a in the vertical direction. At this time, the longitudinal passage 13b is formed in a cylindrical structure and has a diameter of the upper side and a diameter of the lower side larger than that of the upper side. When the longitudinal passage 13b is formed in a vertically downwardly bulging shape, the grouting material g is filled and widened to the area of the grouting material filled in the lateral passage 13a in the cured state, The effect of increasing the support rigidity of the base block 1 for the retaining wall and the joint rigidity between the underground anchor 2 and the retaining wall 1 is exhibited.

The transverse passage 13a is formed in a long elongated structure perpendicular to the longitudinal passage 13b and formed parallel to the block insertion groove 12. [ At this time, the cross-sectional shape of the transverse passage 13a is shaped to have a substantially rectangular shape, and is inserted into a narrow upper and lower width structure having a narrow width at the upper side and a wide width at the lower side to fill the grouting material It is possible to increase the rigidity between the support stiffness and the underground anchor.

Hereinafter, a method of reinforcing a foundation ground of a retaining wall using the base block for a retaining wall according to an embodiment of the present invention will be described.

FIG. 4 is a process diagram for explaining a foundation ground reinforcement method for a retaining wall using a base block for a retaining wall according to an embodiment of the present invention. FIG. 5 is a view for explaining a method of reinforcing a foundation of a retaining wall using a base block for a retaining wall according to an embodiment of the present invention. 6 is a schematic longitudinal sectional view showing a retaining wall structure to which a base ground reinforcement method for a retaining wall using a base block for a retaining wall according to an embodiment of the present invention is applied, and FIG. 7 is a cross- FIG. 8 is a view for explaining a connection structure of a grouting material in a state in which a base ground reinforcement method for a retaining wall using a base block for retaining walls according to an embodiment of the present invention is completed.

3 to 6, the method of reinforcing a foundation ground of a retaining wall using a base block for a retaining wall according to an embodiment of the present invention includes a foundation floor forming step S1, a shrink concrete placing step S2, an underground anchor construction step (S3) and a foundation block installation step (S4) are sequentially performed to prevent damage or breakage of the foundation block when the drilling hole (h) for installing the underground anchor (2) is drilled during the reinforcement process of the foundation foundation It is possible to change the installation position of underground anchor and freely adjust the installation quantity and installation angle of underground anchor.

The foundation floor forming step S1 is a step of horizontally selecting the floor surface by using equipment or by hand so that the base block 1 for the retaining wall can be installed on the floor of the location where the retaining wall is to be constructed.

The dumping concrete pouring step S2 is a step of forming a dump concrete layer c by placing discarded concrete on a floor surface b formed by the basic floor forming step S1, (S4) so as to be installed on the upper surface of the abandoned concrete layer (c).

The underground anchor construction step S3 is a step of installing an underground anchor on the bottom surface formed by the base bottom construction step S1 and is performed on the foreside concrete layer c formed by the execution of the forbidden concrete placement step S2 There is a difference from the conventional art in terms of construction. In addition, the underground anchor construction step S3 includes a drilling process, a long member insertion process, and a grouting re-injection process.

Meanwhile, in the drilling hole drilling process, drilling holes h are drilled in a vertical direction using a drilling machine. In this embodiment, after a foundation block is installed as in the prior art, a mechanism such as drilling drill Since the punching operation is performed directly on the abandoned concrete layer (c), it is easy to work when drilling and vibration or impact force is not applied to the foundation block, so that the foundation block is not damaged or damaged.

Since the drilling process is performed directly on the abandoned concrete layer (c), the interference phenomenon by the foundation block is fundamentally prevented. Therefore, the quantity of excavation holes is drilled in various quantities according to the characteristics of the ground or the site conditions And the perforation direction of the excavation hole can be varied by variously changing not only the vertical direction but also the diagonal direction.

As shown in FIG. 3, the length member insertion process is performed by inserting a length member 2a such as a reinforcing bar into a drilling hole h formed through a drilling process. In addition, the length member insertion process can install the length member 2a in the excavation hole drilled in the vertical position as well as the drilled hole in the vertical position with the longitudinal passage 13b, thereby performing the additional reinforcement function An underground anchor can be formed.

The grouting re-injection process may be performed after the length member insertion process is performed after the concrete mortar is injected into the excavation hole by using a concrete supplying device such as a pump car, but in the present embodiment, (S41) of the basic block installation step (S4) so as to be simultaneously carried out until the integration process (S42) described later.

The foundation block installation step S4 is a step of installing the base block 1 for retaining walls on the floor formed by the foundation foundation forming step S1 and is a step for installing the foundation block 1 for underground anchors formed through the underground anchor construction step S3 A basic block correcting step S41 for installing a base block for a retaining wall on the upper portion of the elongated member 2a and an integrating process S42 for integrating the base block 1 for retaining wall and the elongated member 2a, ).

The basic block correcting step S41 is to lift the base block 1 for the retaining wall so that the upper end of the underground anchor length member 2a is located inside the lateral passage 13a.

The consolidating process S42 is an operation for filling and curing the grouting material in the lateral passage through the longitudinal passage 13b. The concrete mortar is injected into the excavation hole h by using the concrete supplying device, The passage 13a and the longitudinal passage 13b are sequentially filled.

As shown in FIG. 7, when the consolidating process S42 is completed, the grouting material g filled in the underground anchor 2, the transverse passage 13a and the longitudinal passage 13b formed in the ground, So that the base block 1 for a retaining wall can be firmly supported.

6, when the reinforcement of the foundation foundation is completed by the foundation reinforcement method of the retaining wall using the foundation block for retaining wall according to the present invention, the precast panel 3 (retaining wall block) is assembled .

The step of assembling the precast panel comprises the steps of inserting the through holes 32 of the precast panel into the underground stiffener 5 and inserting the lower end of the through holes 32 into the block insertion grooves 12 of the base block 1 for retaining walls, A cast panel is installed, and the cast panel is put on top of the cast panel and stacked.

8 is a perspective view showing a modified example of the base block for retaining wall according to the embodiment of the present invention, in which the bottom portion of the base block for retaining wall is shown.

8, the base block 1 for a retaining wall includes a block insertion groove 12 formed to insert a retaining wall block 3 into a base block body 11, and an injection passage 13 for injecting a grouting material The injection passage 13 is formed with a transverse passage 13a which is recessed along the longitudinal direction on the bottom surface of the base block body 11 and a vertical passage 13b which is formed in the base block body 11 so as to communicate with the transverse passage 13a And a plurality of longitudinal passages 13b passing through the lateral passages 13a in the longitudinal direction of the vehicle body 1. The lateral passages 13a are further provided with clogging partition walls 13c at both ends thereof.

The base block for a retaining wall according to the modification of the present invention described above has a clogging partition wall 13c formed at both ends of the lateral passage 13a so that it flows out to both sides of the lateral passage 13a during injection of the grouting material It is possible to prevent the phenomenon and unnecessary waste of the grouting material can be reduced.

It is to be understood that the present invention is not limited to the above-described embodiment, but may be embodied in various forms without departing from the spirit or scope of the following claims, It will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the present invention as defined by the appended claims.

The terms used in the above embodiments are used only to describe specific embodiments and are not intended to limit the present invention. The singular expressions include plural expressions unless the context clearly dictates otherwise. In the present application, the terms "comprises" or "having" and the like are used to specify that there is a feature, a number, a step, an operation, an element, a component or a combination thereof described in the specification, But do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or combinations thereof.

1: base block for retaining wall 11: base block body
12: block insertion groove 13: injection passage
13a: transverse passage 13b: longitudinal passage
2: underground anchor 2a: length member
3: Block for retaining wall S1: Foundation floor forming step
S2: Injection of abandoned concrete S3: In-situ underground construction
S4: basic block installing step S41: basic block correcting process
S42: integration process b: bottom surface
c: abandoned concrete layer h: excavation ball

Claims (1)

In the base block for retaining wall,
A foundation block body which is seated on a foundation foundation and formed into a square pillar shape; A block insertion groove formed on the upper surface of the base block body so as to be inserted along the longitudinal direction to insert the retaining wall block; And an injection passage formed in the base block body for injection of the grouting material,
Wherein the injection passage includes: a lateral passage formed along the longitudinal direction on the bottom surface of the base block body so as to be parallel to the block insertion groove; And a plurality of longitudinal passages drilled in the vertical direction from the block insertion grooves along the height direction of the base block body to communicate with the lateral passages,
Wherein the longitudinal passage and the transverse passage are formed in a vertically lowered structure so as to improve the supporting rigidity of the base block for retaining wall and the joint rigidity with the underground anchor,
Wherein the transverse passage is formed in a long groove structure having a rectangular longitudinal shape,
And a blocking barrier is further formed at both ends of the lateral passage.

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