KR101781264B1

KR101781264B1 - Structure of self-stand retaining wall and its installation method

Info

Publication number: KR101781264B1
Application number: KR1020150134593A
Authority: KR
Inventors: 금영석; 김영길
Original assignee: 주식회사 금원건설; 금영석; 김영길
Priority date: 2015-09-23
Filing date: 2015-09-23
Publication date: 2017-09-22
Also published as: KR20170035575A

Abstract

The present invention relates to a self-supporting earth retaining structure and a construction method thereof, and more particularly, to a self-supporting earth retaining structure and a construction method thereof, A first earth retaining wall which is inserted between the ground and the thumb pile and is sandwiched between the ground and the pile so that the flat steel is parallel to the excavation surface; And a second earth retaining wall inserted into the ground between the flat self-standing steel plates adjacent to the outside of the thumb piles so that the flat steel is parallel to the excavation surface, One end is inserted into the first earth retaining wall body and the other end is supported by the H-shaped inner side portion of the thumb pile A plurality of guide members are provided between the thumb pile, the self-supporting pile and the flat self-supporting steel plate, one end of which is coupled to the flat self-standing steel plate and the other end is coupled to the thumb pile or self- Can be prevented from flowing into the construction site, and it is possible to prevent the earth retaining wall from flowing or deforming.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a self-supporting earth retaining structure,

According to the present invention, it is possible to prevent soil from flowing into a construction site by installing an earth retaining wall using a multi-layered high strength steel plate between a thumb pile and a thumb pile, and installing a self-supporting steel plate between the thumb pile and the self- And a method of constructing the self-supporting earth retaining structure.

As is well known, it is necessary to construct a retaining structure in order to ensure the safety of the construction work site before the construction of the structure in the various construction work such as the foundation work of the excavation of the ground to a certain depth, the joint work, and the subway construction.

The construction of such a retaining structure is carried out in order to prevent the collapse of the ground due to the earth pressure on the excavation surface or the slope, and the structure is called earth retaining walls, earth plates, earth walls and the like.

In general, in order to prevent the collapse or outflow of the soil, the H beam is fixed at a predetermined depth on the ground at a fixed interval to the edge of the ground excavation part and the cut edge of the ground excavation part, A retaining wall such as an iron plate or the like can be inserted into the retaining structure.

Accordingly, by sandwiching the H beam on the ground, the soil is excavated to a certain depth, and the earth retaining wall is sandwiched between the H beams, so that the surrounding soil can be prevented from flowing into the construction site.

If the bending strength is insufficient in comparison with the earth pressure, shear failure of the earth retaining wall occurs (breaking), and the H beam As it is separated from the flange, there is a high possibility that a large accident occurs due to the inflow of the soil to the construction site.

Therefore, in order to achieve the object of construction of the retaining structure, the retaining wall should have a bending strength corresponding to the earth pressure (i.e., compressive strength and tensile strength), and the H beam serves as a support for supporting the retaining wall do.

However, due to the limitation of the earth pressure that can be tolerated even when the earth retaining structure as described above is installed, the interior of the turf structure must be reinforced with braces or the like.

In addition, there is a problem that the number of materials is increased due to the reinforcement work of the braces, and the construction cost and the construction period are increased.

1. Korean Registered Patent No. 10-1179770 (Registered on August 29, 2012): Retaining Structure and Retaining Structure 2. Korean Registered Patent No. 10-0528578 (Registered on November 8, 2005): Hypothetical soil cladding and its installation method

According to the present invention, the retaining wall is inserted between the thumb pile and the thumb pile, and the retaining member, which can be firmly supported and fixed to the inside of the thumb pile, is inserted into the retaining wall and then inserted. So as to provide a self-supporting type earth retaining structure capable of installing the retaining wall in a predetermined position and a construction method thereof.

Further, according to the present invention, by installing the earth retaining wall combined with the fixing member, it is not necessary to perform reinforcement works such as braces in the terra cotta work area, so that the working space inside the excavation surface can be secured more widely, To provide a self-supporting earth retaining structure capable of reducing the cost and the construction time and filling the filling material through the grouting hose between the first and second earth retaining walls to obtain the effect of grouting construction, and a construction method thereof do.

The objects of the embodiments of the present invention are not limited to the above-mentioned objects, and other objects not mentioned can be clearly understood by those skilled in the art from the following description .

According to an aspect of the present invention, there is provided an excavator comprising: an H-shaped thumb pile installed at a predetermined distance in parallel with an excavation surface; an H-shaped pile installed at a predetermined distance in parallel with the excavation surface, A first earth retaining wall which is inserted between the self-supporting pile of the ground and the thumb pile which is adjacent to the flat pile so as to be parallel to the excavation surface, and a first earth retaining wall which is inserted between the thumb pile and the self- And a second earth retaining wall inserted between the flat self-standing steel plates adjacent to the outside of the thumb piles so that the flat steel is parallel to the excavation surface, wherein between the thumb pile and the first earth retaining wall A fixing member having one end inserted into the first retaining wall body and the other end supported by an H-shaped inner side portion of the thumb pile, The self-supporting type earth retaining structure may be provided between the thumb pile, the self-supporting pile, and the flat self-supporting steel plate, wherein the self-supporting type earth retaining structure is provided with a plurality of guide members, one end of which is coupled with the flat self-standing steel plate, and the other end is coupled with the thumb pile or self-

According to another aspect of the present invention, there is provided a hydraulic excavator comprising: a step of installing an H-shaped thumb pile at a predetermined distance in parallel with an excavation surface; A step of installing a flat self-standing steel plate combined with a plurality of guide members in the ground between the thumb pile and the self-standing pile so as to be perpendicular to the excavation surface; The first retaining wall is installed in the ground between the adjacent thumb piles so that the first retaining wall is parallel to the excavation surface, the other end of the fixing member being supported by the H-shaped inner side of the thumb pile, And a step of installing the self-supporting earth retaining structure in the ground between the flat self-standing steel plates adjacent to the outside of the thumb pile so as to be parallel to the excavation surface There is construction method can be provided.

According to the present invention, it is possible to prevent soil from flowing into a construction site by installing an earth retaining wall using a multi-layered high strength steel plate between a thumb pile and a thumb pile, and installing a self-supporting steel plate between the thumb pile and the self- Can be prevented from flowing or being deformed.

According to the present invention, the retaining wall is inserted between the thumb pile and the thumb pile, and the retaining member, which can be firmly supported and fixed to the inside of the thumb pile, is inserted into the retaining wall and then inserted. So that the earth retaining wall can be installed in place.

Further, according to the present invention, by installing the earth retaining wall combined with the fixing member, it is not necessary to perform reinforcement works such as braces in the terra cotta work area, so that the working space inside the excavation surface can be secured more widely, The cost and construction time can be shortened and the effect of grouting can be obtained by filling the filler through the grouting hose between the first and second earth retaining walls.

1 is a view illustrating a self-supporting type earth retaining structure according to an embodiment of the present invention,
FIG. 2A is a view illustrating a fixing member used in a self-supporting earth retaining structure according to an embodiment of the present invention,
FIG. 2B is a view illustrating a grouting hose used in a self-supporting earth retaining structure according to an embodiment of the present invention,
FIGS. 3A and 3B are views illustrating a state where the retaining wall and the fixing member are coupled according to an embodiment of the present invention,
FIG. 4 is a view illustrating a flat self-standing steel plate having two joined structures in a self-supporting earth retaining structure according to an embodiment of the present invention,
5 is a flowchart illustrating a construction process of a self-supporting earth retaining structure according to another embodiment of the present invention.

Advantages and features of embodiments of the present invention and methods of achieving them will become apparent with reference to the embodiments described in detail below with reference to the accompanying drawings. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. To fully disclose the scope of the invention to those skilled in the art, and the invention is only defined by the scope of the claims. Like reference numerals refer to like elements throughout the specification.

In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear. The following terms are defined in consideration of the functions in the embodiments of the present invention, which may vary depending on the intention of the user, the intention or the custom of the operator. Therefore, the definition should be based on the contents throughout this specification.

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

FIG. 1 is a view illustrating a self-supporting type earth retaining structure according to an embodiment of the present invention. FIG. 2 (a) is a view illustrating a fixing member used in a self supporting type earth retaining structure according to an embodiment of the present invention, 3A and 3B are views illustrating a state in which an earth retaining wall and a fixing member are combined according to an embodiment of the present invention. And FIG. 4 is a view illustrating a flat self-standing steel plate having two joined structures in a self-supporting earth retaining structure according to an embodiment of the present invention.

1 to 4, the self-supporting earth retaining structure according to an embodiment of the present invention includes a thumb pile 110, a self-supporting pile 120, a flat self-standing steel plate 130, a first earth retaining wall 140, 2 fixing wall 150, a fixing member 160, a plurality of guide members 170, a grouting hose 180, and the like.

The thumb pile 110 uses H-shaped steel (i.e., structural rolled steel) and can be installed in the ground at regular intervals in parallel with the excavation surface.

Here, the excavation surface means a boundary surface with a certain depth to the lower side of the ground to construct an underground structure. To prevent the earth wall from collapsing due to the earth pressure on the excavation surface, And a thumb pile 110 may be installed as a base for performing parallel operation to prevent groundwater eluted from the ground from flowing into a construction area.

The self-standing pile 120 may be installed in the ground at regular intervals parallel to the excavation surface at a position spaced apart from the thumb pile 110 by a H-shaped section steel (i.e., structural rolled steel).

When the first earth retaining wall body 140 described later is inserted between the adjacent thumb piles 110 and the trench construction is performed, the first earth retaining wall body 140 and the thumb pile 110 are in contact with the earth pressure And the self-standing pile 120 may be installed in the ground so that the thumb pile 110 serves as a base for reinforcing the earth pressure holding force.

The flat self-standing steel plate 130 may be inserted into the ground between the thumb pile 110 and the self-supporting pile 120 such that a flat steel is perpendicular to the excavation surface, using a high strength steel plate such as SM520.

The flat self-standing steel plate 130 includes at least one steel plate. When a plurality of steel plates are used according to the depth of the excavation surface, the flat steel self-standing steel plates 130 may be combined using bolts and nuts in the overlapped state. For example, as shown in FIG. 4, in the case of two steel plates, one end of the first steel plate 131 and one end of the second steel plate 132 are overlapped and inserted through the fixing bolt 133, And can be fastened with the nut 134 by tightening.

The first earth retaining wall 140 is supported by the thumb pile 110 to withstand the earth pressure and uses a high strength steel plate such as SM520 (Steel Marine 520) or the like, and the adjacent stump piles 110 In the ground.

The first retaining wall 140 may have a plurality of engagement holes 141 having a variety of shapes so that the retaining member 160 may be inserted into the first retaining wall 140. The first retaining wall 140 may have a rectangular first coupling hole 141a, The fixing member 160 may be fixedly coupled to the first earth retaining wall 140 while the securing member 160 is inserted into the second securing hole 141b.

The second earth retaining wall 150 is supported on the outer side of the thumb pile 110 to assist the first earth retaining wall 140 to withstand the earth pressure and uses a high strength steel sheet such as SM520, And can be inserted into the ground between the flat self-standing steel plates 130 adjacent to the outside of the thumb pile 110 so as to be parallel to the excavation surface.

The structure including the thumb pile 110, the self-supporting pile 120, the first earth retaining wall 140, the flat self-standing steel plate 130, and the second retaining wall body 150 may include the first earth retaining wall 140, And the second earth retaining wall 150 supporting the second earth retaining wall 150 can withstand the earth pressure, and it is not necessary to reinforce the construction area where the earthworks work is carried out, such that a work space inside the excavating surface can be secured more widely .

The fixed member 160 is disposed between the thumb pile 110 and the first earth retaining wall 140 and has one end inserted and coupled to the first retaining wall 140 and the other end connected to the H And can be supported at the inner side of the shape.

The fixing member 160 includes a rectangular fixing plate 161 fixed to the first earth retaining wall 140 and a fixture 162 protruding from the fixing plate 161 and inserted into the first retaining wall 140 ). The fixing plate 161 can be firmly fixed to the second coupling hole 141b of the first earth retaining wall body 140 with bolts B and nuts.

The fixture 162 may be formed in a rectangular shape so as to be inclined so as to be supported by the H-shaped inner side portion of the thumb pile 110 while being coupled to the first earth retaining wall 140, The cross section can be supported at the H-shaped medial edge.

The two end portions of the first earth retaining wall body 140 are supported on one ends of the respective H-shaped inner side portions of the thumb pile 110 adjacent to the thumb pile 110, 162 of the thumb pile 110 are supported by the other ends of the respective H-shaped inner side portions of the thumb pile 110 adjacent to the thumb pile 110 so that the first earth retaining wall body 140 is supported between the thumb piles 110 And can be firmly fixed.

The plurality of guide members 170 are provided between the thumb pile 110, the self-supporting pile 120 and the flat self-standing steel plate 130 to secure the thumb pile 110, the self-supporting pile 120, One end may be coupled to the flat self-standing steel plate 130, and the other end may be coupled to the thumb pile 110 or the self-supporting pile 120.

The plurality of guide members 170

and

And the like,

and

If you have a combined form

In the state where the flat self-standing steel plate 130 is fixedly coupled to the one side surface of the main body through the coupling bolt 171 and the coupling nut 172

The thumb pile 110 or the self-supporting pile 120 may be coupled in a sliding manner.

The grouting hose 180 is for grouting the filling material 180a such as cement milk, sodium silicate 2 or bentonite in the space between the first and second earthen wall 140 and the second earthen wall 150, A steel material grouting pipe 181 and a rubber material grouting sleeve 182 provided at regular intervals of the grouting pipe 181. Here, the grouting pipe 181 and the grouting sleeve 182 may be provided with a plurality of through holes through which the inner and outer portions communicate with each other at the joining position of the grouting sleeve 182.

The grouting hose 180 may be vertically installed between the first and second earthen walls 140 and 150. The grouting hose 180 may be installed in the grouting wall 180, A filler such as cement milk, sodium silicate 2 or bentonite is injected into the grouting pipe 181 and the filler is injected through a plurality of through holes passing through the grouting pipe 181 and the grouting sleeve 182, 1 space between the securing wall 140 and the second earth retaining wall 150 can be filled (grouting work).

Therefore, according to the present invention, it is possible to prevent soil from entering the construction site by installing a retaining wall using a multi-layered high-strength steel plate between the thumb pile and the thumb pile, and installing a self-supporting steel plate between the thumb pile and the self- It is possible to prevent the earth retaining wall from flowing or deforming.

Next, in a self-supporting earth retaining structure having the above-described structure, a thumb-pile and a self-standing pile are installed in the ground, a flat self-standing steel plate having a plurality of guide members coupled thereto is installed between a thumb pile and a self- And the second earth retaining wall is disposed between the outer side of the thumb pile and the flat steel self-supporting steel plate.

5 is a flowchart illustrating a construction process of a self-supporting earth retaining structure according to another embodiment of the present invention.

Referring to FIG. 5, the H-shaped thumb pile 110 is installed at a predetermined distance in parallel with the excavation surface (step 502).

The H-shaped self-standing pile 120 is installed at a predetermined distance in parallel to the excavation surface at a position spaced apart from the thumb pile 110 by a predetermined distance (step 504).

Next, the flat self-standing steel plate 130 to which the plurality of guide members 170 are coupled is installed between the thumb pile 110 and the self-supporting pile 120 so as to be perpendicular to the excavation surface (step 506).

Here, the plurality of guide members 170

and

May have a combined form,

The flat self-standing steel sheet 130 includes at least one steel sheet. When a plurality of steel sheets are used, they may be combined using bolts and nuts in a state where the steel sheets are overlapped. For example, in the case of two steel plates, the bolts 143 are inserted through one end of the first steel plate 141 and one end of the second steel plate 142, .

The first earth retaining wall 140 having one end of the fixing member 160 inserted therein is installed between the adjacent thumb piles 110 in parallel with the excavation surface in step 508.

The fixing member 160 includes a fixing plate 161 and a fixing member 162. The fixing member 162 has a rectangular shape and is coupled to the first supporting member 140 so that the H And the end surface of the fixture 162 may be supported at the edge of the H-shaped inner side.

The second earth retaining wall 150 for supporting the role of the first earth retaining wall 140 is installed in the ground between the flat self-standing steel plates 130 adjacent to the outside of the thumb pile 110 so as to be parallel to the excavation surface (Step 510).

A grouting hose 180 is vertically installed between the first and second earthen walls 140 and 150. The grouting pipe 181 is filled with a filler such as cement milk, sodium silicate 2, bentonite, And the filler is sprayed through a plurality of through holes passing through the grouting pipe 181 and the grouting sleeve 182 to fill spaces between the first and second earthen walls 140 and 150, (Step 512). &Lt; / RTI >

Further, according to the present invention, by installing the earth retaining wall combined with the fixing member, it is possible to secure a wider working space inside the excavation surface because it is not necessary to reinforce the excavation work area such as a bracket etc., The cost and construction time can be shortened and the effect of grouting can be obtained by filling the filler through the grouting hose between the first and second earth retaining walls.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It will be readily apparent that such substitutions, modifications, and alterations are possible.

110: Thumb pile 120: Self-standing pile
130: plain self-standing steel plate 140: first retaining wall
150: second earth retaining wall 160: fixing member
170: plurality of guide members 180: grouting hose

Claims

An H-shaped thumb pile installed in the ground at regular intervals in parallel with the excavation surface,
An H-shaped self-standing pile installed at a predetermined distance in parallel to the excavation surface at a position spaced apart from the thumb pile by a predetermined distance,
A first earth retaining wall inserted into the ground between the adjacent thumb piles so that the flat steel is parallel to the excavation surface,
A flat self-standing steel plate inserted into the ground between the thumb pile and the self-standing pile so that the flat steel is perpendicular to the excavation surface,
And a second earth retaining wall inserted into the ground between the flat self-standing steel plates adjacent to the outside of the thumb pile so that the flat steel is parallel to the excavation surface,
A fixing member is provided between the thumb pile and the first earth retaining wall, one end of which is inserted into the first earth retaining wall and the other end is supported by the H-shaped inner side of the thumb pile,
A plurality of guide members are provided between the thumb pile, the free-standing pile and the flat free-standing steel plate, one end of which is coupled to the flat-surfaced steel plate and the other end is coupled to the thumb pile or the free-
Wherein the fixing member includes a rectangular plate fixed to the first earth retaining wall and a fixture extending obliquely and projecting from the fixing plate and inserted and coupled to the first earth retaining wall,
The first earth retaining wall body is a self supporting type earth retaining wall having both end portions supported at one end of the H-shaped inner side portion of the thumb pile and inserted and fixed at the other end of the H-shaped inner side portion of the thumb pile, rescue.

The method according to claim 1,
The self-supporting type earth retaining structure comprises a self-supporting type earth retaining wall for filling a space between the first and second earthen walls by injecting a filler through a grouting hose vertically installed between the first and second earthen walls, rescue.

delete

3. The method according to claim 1 or 2,
Wherein the flat self-standing steel plate comprises at least one steel plate, and when a plurality of steel plates are used, the steel plates are combined using the coupling bolts and the coupling nuts in a superposed state.

3. The method according to claim 1 or 2,
Wherein the plurality of guide members comprise:

and

Has a combined form,

In which the flat self-supporting steel plate is fixedly coupled to one side surface of the flat plate-

Wherein the thumb pile or the self-standing pile is coupled to the groove of the self-supporting type pile structure in a sliding manner.

Installing an H-shaped thumb pile in the ground at regular intervals in parallel with the excavation surface;
Installing a H-shaped self-standing pile at a position spaced apart from the thumb pile by a predetermined distance in parallel with the excavation surface;
A step of installing a flat self-standing steel plate coupled with a plurality of guide members in the ground between the thumb pile and the self-standing pile so as to be perpendicular to the excavation surface,
A step of installing the first earth retaining wall having one end of the fixing member inserted between the thumb piles adjacent to each other so as to be in parallel with the excavation surface while the other end of the fixing member is supported by the inner H- ,
And installing the second earth retaining wall in the ground between the flat self-standing steel plates adjacent to the outside of the thumb pile so as to be parallel to the excavation surface,
Wherein the fixing member includes a rectangular plate fixed to the first earth retaining wall and a fixture extending obliquely and projecting from the fixing plate and inserted and coupled to the first earth retaining wall,
The step of supporting the inner side portion of the thumb pile is carried out such that both end portions of the first earth retaining wall body are supported at one end of the H-shaped inner side portion of the thumb pile, and the end of the fixture inserted and coupled to the other end of the thumb pile H- And the pile is inserted and fixed to the thumb pile.

8. The method of claim 7,
The self-supporting earth retaining structure construction method comprises:
The filler is ejected through the grouting hose vertically installed between the first and second earthen walls to sandwich the first and second earthen walls between the first and second earthen walls, Steps to fill the space
Wherein the method further comprises the steps of:

delete

9. The method according to claim 7 or 8,
Wherein the step of installing the thumb pile and the self-

and

Wherein the plurality of guide members having the combined shape are coupled to the flat-plate-free steel plate,

Wherein the thumb pile or the self-supporting pile is coupled to the groove of the self-supporting type earth retaining structure in a sliding manner.

12. The method of claim 11,
Wherein the flat self-standing steel plate comprises at least one steel plate, and when a plurality of steel plates are used, the steel plates are combined using the coupling bolts and the coupling nuts in a superposed state.