KR20220067778A - Retaining wall and construction method thereof - Google Patents

Abstract

The present invention relates to a retaining wall structure and a retaining wall construction method using the same, in which a drawing resisting body and a pressure resisting body are buried in the horizontal ground, and an integrated retaining wall foundation part, which is dualized into a lower foundation part having the top of each resisting body buried therein and an upper foundation part having the top of the drawing resisting body and the lowest retaining wall blocks buried therein, is constructed, so that the resisting bodies resist drawing pressure and compression pressure due to soil pressure in a complementary manner, and therefore, a more rigid retaining wall structure can be constructed.

Description

Retaining wall structure using pull-out resistor, pressure resistor, and prefabricated retaining wall block, and retaining wall construction method using the same

The present invention is to construct a retaining wall foundation that is integrated by burying a pull-out resistor and a compression resistor in the horizontal ground, and dualizing it into a low-rise foundation in which all of the upper ends of each resistor are buried, and an upper foundation in which the upper part of the pull-out resistor and the lowermost retaining wall block are embedded, The present invention relates to a retaining wall structure and a method of constructing a retaining wall using the same, which enables the retaining wall structure to be constructed more firmly by mutually complementary resistance to the pull-out and compression pressures caused by the earth pressure.

In the conventional retaining wall, a plurality of blocks are built with a predetermined distance from the slope, aggregate, reinforcing soil, etc. are filled and compacted in the space behind the block, and a horizontal grid is bound inside the retaining wall made of blocks, so that the retaining wall is behind the retaining wall. It is constructed to prevent soil collapse.

In the case of unequal subsidence of reinforcing soil, etc., in the conventional retaining wall, cracks and destruction occurred at the connection part of the block and grid, resulting in frequent separation of the grid. There was a problem that cracks frequently occurred.

In order to solve this problem, there is Registered Utility Model No. 20-0402401.

The registered utility model is to improve the stopping power of the retaining wall by burying the base plate after excavating in the ground where the blocks are to be assembled, and then inserting an anchor into the rear end of the base plate to resist the load applied to the retaining wall.

However, in the registered utility model, since only the rear end of the base plate is fixed with an anchor, the force to resist the compression pressure on the ground where the front end of the base plate is located is weak, so if the balance of the base plate itself is out of balance, the retaining wall will collapse. There is a risk.

In particular, the registered utility model is a gravity retaining wall in which the base plate and the block structure are connected in an inverted 'T' shape, and the compression pressure applied to the part where the block structure is connected in the base plate is greatly increased. When the compression pressure applied to the part exceeds the pull-out pressure applied to the rear end of the base plate, subsidence of the ground supporting the base plate or cracks in the base plate itself occur, thereby increasing the risk of collapse.

Accordingly, the present invention has been devised to solve the above problems,

The present invention relates to a retaining wall structure for construction and a method for constructing a retaining wall using the same, in which a pull-out resistor and a compression resistor are buried in a horizontal ground, and a low-rise foundation part in which all upper ends of each resistor are buried, and an upper part of the pull-out resistor and the lowermost retaining wall block are buried A retaining wall structure and a method of constructing a retaining wall using the same are constructed by constructing a retaining wall foundation that is integrated with the upper foundation, and each resistor complements each other to resist pull-out and compressive pressures caused by earth pressure to make the retaining wall structure more robust. intended to provide

In order to achieve the above object, the retaining wall structure according to the present invention,

In the retaining wall structure installed on the slope,

a pull-out resistor that is vertically buried in a position close to the slope in the horizontal ground connected to the lower end of the slope;

a compression resistor embedded in a vertical direction at a position spaced apart by a predetermined width in front of the pull-out resistor in the horizontal ground;

a retaining wall foundation made of concrete poured around the pull-out resistor and the compression resistor and the foundation excavation part of the horizontal ground;

Retaining wall blocks assembled in a step shape at a predetermined angle toward the slope above the retaining wall base;

The retaining wall foundation includes a low-rise foundation made of concrete in which both the upper ends of the pull-out resistor and the compression resistor are buried in the lower part of the foundation excavation, and the upper part of the pull-out resistor and the lowermost retaining wall block are buried in the upper part of the low-rise foundation. It is characterized in that it includes an upper foundation made of concrete to be poured.

And in the retaining wall structure according to the present invention,

The retaining wall foundation includes horizontal resistance reinforcing bars horizontally reinforcing each of the low-rise foundation and the upper foundation, and vertical resistance reinforcing bars reinforced through the low-rise foundation and the upper foundation in a vertical direction.

In addition, in the retaining wall structure according to the present invention,

A hinge shaft rotatably coupled to both sides of the lower end of the pull-out resistor is formed by connecting both ends of the hinge shaft in the circumferential direction of the pull-out resistor, the pull-out resistor having a width greater than the radius of the buried hole for the pull-out resistor; It is vertically erected from the lower surface of the pull-out resistor and is supported on the outer peripheral surface of the pull-out resistor, and the pull-out resistor comprises a pull-out resistance anchor comprising a support part that is hooked on the lower layer of the horizontal ground in an upwardly inclined form from the hinge part and is buried. characterized.

In addition, the retaining wall construction method using the retaining wall structure according to the present invention,

a) drilling a first buried hole for a pull-out resistor and a second buried hole for a compression resistor in the horizontal ground connected to the lower end of the slope in the vertical direction, and drilling the inner diameter of each buried hole larger than the outer diameter of each resistor;

b) inserting a pull-out resistor and a compression resistor into each buried hole;

c) excavating a foundation trench around the upper ends of the pull-out resistor and the compression resistor;

d) forming a low-rise foundation in which the upper ends of the pull-out resistor and the compression resistor are buried by pouring concrete into the lower part of each of the buried holes and the foundation excavation part;

e) installing a lowermost retaining wall block on the upper surface of the low-rise foundation;

f) pouring concrete in the upper part of the foundation excavation part to form an upper foundation part in which the upper part of the pull-out resistor and the lowermost retaining wall block are embedded;

g) assembling and installing the retaining wall blocks in a step shape at a predetermined angle toward the slope above the lowermost retaining wall block.

A retaining wall structure according to the present invention and a retaining wall construction method using the same,

Compression resistors and pull-out resistors embedded in the front and rear of the block, each resistor and the lowermost retaining wall block are dually constructed and integrally constructed, including the retaining wall foundation consisting of the lower and upper foundations, and the pulling pressure applied to the retaining wall and the base plate It can improve the resistance to both compression pressure applied to the

By connecting the pull-out resistor and the lowermost retaining wall block to each other with reinforcing bars on the upper foundation, pull-out resistance is secured not only on the retaining wall foundation but also on the retaining wall structure itself.

It is a pull-out resistance anchor that is hinged to the lower end of the pull-out resistor and rotates up and down by increasing the bonding strength of the pull-out resistor in the ground.

It has the effect of reducing the risk of collapse of retaining walls.

1 and 2 are cross-sectional views of a retaining wall according to the present invention.
3 is a perspective view of a retaining wall block according to the present invention.
Figure 4 is a plan view and a front view showing the assembly structure of the retaining wall block according to the present invention.
5 to 10 are cross-sectional views showing the retaining wall construction method according to the present invention step by step.

Since the present invention can have various changes and can have various forms, implementation examples (態樣, aspects) (or embodiments) will be described in detail in the text. However, this is not intended to limit the present invention to the specific disclosed form, it should be understood to include all modifications, equivalents and substitutes included in the spirit and scope of the present invention.

In each drawing, the same reference sign, particularly the number of the tens and one digit, or the reference numerals having the same tens, one, and alphabet, indicates a member having the same or similar function, and, unless otherwise specified, each The member indicated by the reference sign may be regarded as a member conforming to these standards.

In addition, in each drawing, components are expressed in exaggeratedly large (or thick), small (or thin) or simplified in size or thickness in consideration of convenience of understanding, but the protection scope of the present invention is limited by this. it shouldn't be

The terminology used herein is only used to describe a specific embodiment (aspect, aspect, aspect) (or embodiment), and is not intended to limit the present invention. The singular expression includes the plural expression unless the context clearly dictates otherwise.

In the present application, terms such as comprises or consists of are intended to designate the existence of a feature, number, step, operation, component, part, or combination thereof described in the specification, but one or more other features It is to be understood that it does not preclude the possibility of the presence or addition of numbers, steps, operations, components, parts, or combinations thereof.

Unless defined otherwise, all terms used herein, including technical and scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the related art, and should not be interpreted in an ideal or excessively formal meaning unless explicitly defined in the present application. does not

~1~, ~2~, etc. described in the present specification are only to be referred to to distinguish that they are different components, and are not limited to the order of manufacture, and their names in the detailed description and claims of the invention are may not match.

In describing the retaining wall structure according to the present invention and the retaining wall construction method using the same, for convenience, if an approximate direction standard that is not strict is specified with reference to FIG. In the detailed description and claims of the invention related to other drawings, unless otherwise specified, the direction is specified and described according to this standard.

Hereinafter, a retaining wall structure according to the present invention and a retaining wall construction method using the same will be described with reference to the accompanying drawings.

The present invention relates to a retaining wall structure having improved pull-out resistance and compression resistance of the retaining wall, and a retaining wall construction method using the same,

First, the retaining wall structure according to the present invention includes, as shown in FIGS. 1 to 10 , a pull-out resistor 10, a compression resistor 20, a retaining wall base 30, retaining wall blocks 40, and various connecting materials. do.

The pull-out resistor 10 is vertically buried at a position adjacent to the slope 1 in the horizontal ground 2 connected to the lower end of the slope 1 .

And the compression resistor 20 is vertically buried at a position spaced apart from the front of the pull-out resistor 10 by a predetermined distance in the horizontal ground 2 .

As the pull-out resistor 10 and the compression resistor 20, concrete anchor pile piles, H-beam anchor piles, steel pipe anchor pile piles, PC steel wire and anchor assembly piles, etc. may be used,

At this time, the pull-out resistor 10 is made longer than the compression resistor 20 so that when the resistors 10 and 20 are buried at the same depth, the pull-out resistor 10 protrudes more upward than the compression resistor 20. is constructed

In addition, both ends of the pull-out resistor 10 are hinged so as to be rotatably up and down on both sides of the lower end of the pull-out resistor 10 and are connected in the circumferential direction of the pull-out resistor 10 to form a first buried hole for the pull-out resistor 10 ( 4) The pull-out resistance part 11a having a width greater than the radius of the pull-out resistor part 11a is erected in the vertical direction from the lower surface and is supported on the outer peripheral surface of the pull-out resistor 10, and the pull-out resistor part 11a is It includes a pull-out resistance anchor 11 made of a support portion 11b to be buried by hanging on the lower layer of the horizontal ground 2 in an upwardly inclined form to the outside.

When the pull-out resistance anchor 11 is rotated upward, the pull-out resistor 11a is erected in close contact with the outer circumferential surface of the pull-out resistor 10, and the pull-out resistor 10 is placed in the first buried hole 4 for the pull-out resistor 10. Horizontal ground (2) that enables insertion and forms the first buried hole (4) by reversing the pull-out resistor (11a) in an oblique direction while the support part (11b) is supported on the pull-out resistor (10) when it is rotated downward ) is inserted into the lower layer, and resists the pulling pressure applied to the retaining wall foundation (30).

In addition, the compression resistor 20 supports the front end of the retaining wall base 30 , in particular, the lower portion of the lowest retaining wall block 40A to resist the compressive resistance applied to the retaining wall.

In particular, as the pull-out resistor 10 and the compression resistor 20 are arranged in the front and rear of the retaining wall foundation 30, the resistors 10 and 20 complement each other to resist the pull-out pressure and the compression pressure, so that the retaining wall foundation The cracks of the part 30 and the retaining wall block 40, subsidence of the ground, collapse of the retaining wall, etc. do not occur.

Next, the retaining wall foundation 30 supports the lower part of the outer block wall 3, and is poured around the pull-out resistor 10 and the compression resistor 20 and the foundation excavation part 6 of the horizontal ground 2 made of concrete

In particular, the retaining wall foundation 30 is a low-rise foundation 31 made of concrete that is poured so that both upper ends of the pull-out resistor 10 and the compression resistor 20 are buried in the lower part of the foundation excavation part 6, In the upper part of the lower base part 31, the upper part of the pull-out resistor 10 and the lowermost retaining wall block 40A are embedded in the upper part of the base part 32 made of concrete.

The retaining wall foundation 30, which is integrally constructed by pouring concrete in this way, increases the binding force between the pull-out resistor 10, the compression resistor 20, and the lowermost retaining wall block 40A, which are embedded with concrete, to increase the block outer wall (3) It can greatly improve the pull-out resistance and compression resistance of

In addition, the retaining wall foundation 30 includes a horizontal resistance reinforcing bar 33 that is horizontally reinforced on each of the low-rise foundation 31 and the upper foundation 32, and the low-rise foundation 31 and the upper foundation ( 32) includes a vertical resistance reinforcing bar 34 that is reinforced by penetrating it in the vertical direction.

The horizontal and vertical resistance reinforcing bars 33 and 34 resist the pressure acting in the horizontal direction of each foundation 31 and 32 and the vertical direction of the foundation portions 31 and 32 to resist the retaining wall foundation 30 It helps to increase its own rigidity.

And the retaining wall blocks 40 are assembled in a step shape at a predetermined angle toward the slope 1 above the retaining wall foundation 30, and as described above, the lowermost retaining wall block 40A is the upper foundation 32 ) is buried in

This retaining wall block 40 has an embossing portion 40a convexly protruding in the front portion in a trapezoidal shape with a wider left and right width than the rear side, and the retaining wall blocks 40 of the same floor are arranged on the right and left in the same line and installed The upper retaining wall blocks 40H are assembled and installed in a form retracted from the upper surface of the lower retaining wall block 40L toward the slope 1, and the block outer wall 30 is constructed to have a stepped inclined structure.

In addition, the retaining wall blocks 40 are stacked in a form in which the lower retaining wall blocks 40L and the upper retaining wall blocks 40H are arranged in a left and right zigzag arrangement.

Specifically, first, the retaining wall block 40 is provided with a fitting protrusion 41a at one corner of both rear side corners, and a fitting groove 41b is provided at the other corner,

The retaining wall blocks 40 arranged on the left and right are matched and connected in a male and female coupling structure, and due to the trapezoidal structure of the retaining wall block 40, a wedge-shaped filling part 40S is formed between the left and right retaining wall blocks 40, so that the soil or aggregate etc. are filled.

And the retaining wall block 40 is formed in the vertical direction while having a predetermined depth on both sides of the left and right, and the assembly grooves 42a arranged to be spaced apart from each other by a predetermined distance in the front and back sides, and the central front end, vertically penetrated at a predetermined position. Including the long portion (42b) formed by

A vertical connection anchor rod (42R) is fitted and coupled to one of the assembly grooves (42a) of the retaining wall block (40) arranged in the lower layer and the long portion (42b) of the retaining wall block (40) arranged in the upper layer.

That is, after inserting the lower end of the vertical connection anchor rod 42R into one of the assembly grooves 42a of each side facing each other in the retaining wall block 40 arranged on the left and right, the vertical connection anchor rods 42R are installed at the upper end When assembling by inserting into both ends of the long part 42b of the retaining wall block 40 assembled on the upper floor, the upper and lower retaining wall blocks 40 are cross-arranged in a left and right zigzag and constructed,

At this time, by varying the position where the vertical connection anchor bar 42R is fitted, the inclination of the retaining wall can be arbitrarily changed and adjusted.

In addition, the retaining wall block 40 has a binding groove 43a formed in a '+' shape while having a predetermined depth on the upper surface, and a fitting groove 43b formed at a predetermined depth in the vertical direction at a predetermined position of the binding groove 43a. including,

Both ends of the horizontal connecting rod 43R bent in a 'C' shape are fitted and coupled to each fitting groove 43b of the retaining wall block 40 arranged in the left and right or front and rear.

In addition, the retaining wall block 40 is provided with coupling grooves 44 formed to a predetermined depth on the upper and lower surfaces, and the assembly pins 44R are inserted into the respective assembly grooves 44 of the retaining wall block 40 arranged up and down and coupled. .

Furthermore, the present invention includes a transverse connecting reinforcing bar 35 that is reinforced by connecting the upper surfaces of the pull-out resistors 10 arranged and buried in the left and right horizontal directions in the left and right horizontal directions.

The transverse connection reinforcing bar 35 is coupled to the upper surface of the pull-out resistor 10 by welding or the like to increase the rigidity of the upper base part 32 while connecting the pull-out resistors 10 .

Through this, the pull-out resistors 10 and the lowermost retaining wall blocks 40A are connected to each other in front, back, left, and right directions, thereby contributing to the improvement of the self-rigidity of the upper base 32 .

Next, a construction method of the retaining wall using the retaining wall structure will be described.

The method for constructing a retaining wall according to the present invention comprises:

a) In the horizontal ground (2) connected to the lower end of the slope (1), the first buried hole (4) for the pull-out resistor (10) and the second buried hole (5) for the compression resistor (20) are drilled in the vertical direction, , perforating the inner diameter of each buried hole (4) (5) larger than the outer diameter of each resistor (10, 20);

b) inserting the pull-out resistor 10 and the compression resistor 20 into each of the buried holes 4 and 5;

c) excavating the foundation excavation part (6) around the upper ends of the pull-out resistor (10) and the compression resistor (20);

d) Concrete is poured into the lower part of each of the burial holes 4 and 5 and the foundation excavation part 6, and the lower part of the foundation 31 in which the upper ends of the pull-out resistor 10 and the compression resistor 20 are buried. forming;

e) installing the lowermost retaining wall block (40A) on the upper surface of the low-rise foundation (31);

f) pouring concrete into the upper part of the foundation excavation part 6 to form an upper base part 32 in which the upper end of the pull-out resistor 10 and the lowermost retaining wall block 40A are embedded;

g) assembling and installing the retaining wall blocks 40 in a step shape of a predetermined angle toward the slope 1 above the lowermost retaining wall block 40A.

In step a), the first buried hole 4 for the pull-out resistor 10 and the second buried hole 5 for the compression resistor 20 are all drilled to the same depth. At this time, each resistor 10, 20 The inner diameter of each of the buried holes 4 and 5 is larger than the outer diameter of the drilling by a predetermined dimension.

And in step b), each resistor 10, 20 is inserted into each of the buried holes 4 and 5. At this time, the pull-out resistance anchor 11 of the pull-out resistor 10 is tilted upward, and the first Allow it to be inserted into the ball (4).

When the insertion of the pull-out resistor 10 is completed in step b), the casing 12 for driving has an inner diameter larger than the outer diameter of the pull-out resistor 10 and smaller than the inner diameter of the first buried hole 4 Extrapolated to the pull-out resistor (10).

The driving casing 12 fitted in this way hits the pull-out resistance part 11a of the pull-out resistance anchor 11 tilted upward to the lower side so that the pull-out resistance anchor 11 rotates downward, at this time the support part 11b) As a result, the pull-out resistor portion 11a is spread inclined upward with respect to the hinge axis, and the end portion of the pull-out resistor portion 11a is embedded while being caught in the lower layer of the horizontal ground 2 .

Next, the foundation excavation part 6 is excavated in step c), in which case the foundation excavation part 6 is excavated larger than the area of the entire retaining wall foundation 30 .

When the foundation excavation work is completed, the formwork is installed around the upper ends of the pull-out resistor 10 and the compression resistor 20, and then step d) is performed. ) The low-rise foundation 31 is completed with concrete filled up to (5).

And when the concrete is poured in step d), the horizontal resistance reinforcing bar 33 and the vertical resistance reinforcing bar 34 are reinforced together.

Subsequently, in step e), the retaining wall blocks 40 are installed to the left and right of the low-rise foundation 31, and at this time, in consideration of the inclined design of the retaining wall, the vertical connection anchor rods 42R are installed in an appropriate position, The left and right retaining wall blocks 40 are fixed with the fitting protrusions 41a and the fitting grooves 41b of the retaining wall block 40, and the 'C'-shaped horizontal connecting rod 43R.

When the installation of the retaining wall blocks 40A of the lowermost layer of the retaining wall is completed, after installing the lateral connecting reinforcing bars 35 and the longitudinal connecting reinforcing bars, concrete is additionally poured into the formwork in step f) to form the upper foundation 32 At this time, the reinforcement of the horizontal resistance reinforcing bar 33 is made together.

And when the retaining wall foundation 30 composed of the lower foundation 31 and the upper foundation 32 is completed, the remaining retaining wall blocks 40 are sequentially stacked on the lowermost retaining wall block 40A in a stepwise fashion, and at this time The vertical connection anchor rod (42R), the assembly pin (44R), the horizontal connection rod (43R) to increase the binding force between the retaining wall blocks (40).

In addition, if necessary, the retaining wall blocks 40 may be additionally installed using the vertical connecting anchor rods 42R, the assembly pins 44R, and the horizontal connecting rods 43R to the inside together with the retaining wall block 40 of the frontmost surface ( see Fig. 2).

Finally, when the construction of the retaining wall blocks 40 is completed, after the formwork is removed, the soil is piled up in the foundation excavation part 6 and trimmed work is performed, and at the same time, aggregate or soil is placed in the space between the retaining wall blocks 40 and the slope surface (1). When the back is filled and trimmed, the retaining wall is completed.

In the above description of the present invention, with reference to the accompanying drawings, the retaining wall structure and the retaining wall construction method using the same have been mainly described, but the present invention is capable of various modifications, changes and substitutions by those skilled in the art, and these modifications, changes and substitutions are It should be construed as belonging to the protection scope of the invention.

10: pull-out resistor 20: compression resistor
30: retaining wall base 40: retaining wall block

Claims (4)

In the retaining wall structure installed on the slope,
a pull-out resistor buried in the vertical direction in the vicinity of the slope in the horizontal ground connected to the lower end of the slope;
a compression resistor embedded in a vertical direction at a position spaced apart by a predetermined width in front of the pull-out resistor in the horizontal ground;
a retaining wall foundation made of concrete poured around the pull-out resistor and the compression resistor and the foundation excavation part of the horizontal ground;
Retaining wall blocks assembled in a step shape at a predetermined angle toward the slope above the retaining wall base;
The retaining wall foundation includes a low-rise foundation made of concrete in which both the upper ends of the pull-out resistor and the compression resistor are buried in the lower part of the foundation excavation, and the upper part of the pull-out resistor and the lowermost retaining wall block are buried in the upper part of the low-rise foundation. Retaining wall structure, characterized in that it comprises an upper floor foundation made of concrete to be poured.
The method of claim 1,
The retaining wall foundation includes a horizontal resistance reinforcing bar horizontally reinforced to each of the low-rise foundation and the upper foundation, and a vertical resistance reinforcing bar reinforced by penetrating the low-rise foundation and the upper foundation in a vertical direction. structure.
3. The method of claim 1 or 2,
The pull-out resistor has both ends hinged to be rotatably up and down on both sides of the lower end of the pull-out resistor and is formed by connecting in the circumferential direction of the pull-out resistor, the pull-out resistor having a width greater than the radius of the buried hole for the pull-out resistor, the lower surface of the pull-out resistor Retaining wall structure comprising a pull-out resistance anchor which is vertically erected in the pole and is supported on the outer peripheral surface of the pull-out resistor, and the pull-out resistor comprises a support part to be buried by hanging on the lower layer of the horizontal ground in an upwardly inclined form. .
In the retaining wall construction method using the retaining wall structure of claim 1,
a) Drilling a buried hole for a pull-out resistor and a buried hole for a compression resistor in the horizontal ground connected to the lower end of the slope in the vertical direction, and drilling the inner diameter of each buried hole larger than the outer diameter of each resistor;
b) inserting a pull-out resistor and a compression resistor into each buried hole;
c) excavating a foundation trench around the upper ends of the pull-out resistor and the compression resistor;
d) forming a low-rise foundation in which the upper ends of the pull-out resistor and the compression resistor are buried by pouring concrete into the lower part of each of the buried holes and the foundation excavation;
e) installing a lowermost retaining wall block on the upper surface of the low-rise foundation;
f) pouring concrete in the upper part of the foundation excavation part to form an upper foundation part in which the upper part of the pull-out resistor and the lowermost retaining wall block are embedded;
g) assembling and installing the retaining wall blocks in a step shape at a predetermined angle toward the slope above the lowermost retaining wall block;

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