KR102137200B1 - construction method of soil retaining wall using square steel pipe - Google Patents

Abstract

The present invention provides a square steel pipe for retaining wall construction and a retaining wall construction method using the same, in which a plurality of casing bodies are inserted into the ground in close contact with each other by a vibration press fitting method when retaining walls are constructed on the ground, thereby easily performing construction work for insertion of the casing bodies into the ground by the vibration press fitting method rather than a rotation method; the casing bodies come in close surface contact with each other as the casing bodies are formed of a square steel pipe, so as to have strong durability and support against the earth pressure transmitted thereto, thereby preventing the casing bodies from becoming curved or collapsing, and increasing safety and economic feasibility and reducing the construction period for retaining wall construction; there is no need of additionally constructing reinforcing structures such as rebars, thereby greatly increasing work efficiency; and the casing bodies are constructed to be fitted and positioned on separation prevention guide rails provided on the casing bodies, thereby enabling continuous work for the casing bodies, and greatly increasing the verticality to the casing bodies.

Description

Construction method of soil retaining wall using square steel pipe

The present invention relates to a square-shaped steel pipe for the construction of a mudguard and a method of constructing a mudguard using the same, more specifically, a casing made of a square-shaped steel pipe is vertically buried in the ground by a vibration pressing method, but a support reinforcement is provided by providing a support reinforcement on one side of the square-steel pipe casing. By connecting a plurality of square-shaped steel pipe casings in the horizontal direction by construction, a gap between the casing and the casing by surface contact is prevented, thereby significantly improving the water repellency, and also along the longitudinal direction of the square-shaped steel pipe casing. The present invention relates to a rectangular steel pipe for constructing a retaining membrane and a method of constructing a retaining membrane using the same, so that the supportability of the rectangular steel pipe casing can be improved by inserting a reinforcing steel pipe.

In general, in order to construct various structures, such as apartments, buildings, or bridges, the foundation trench construction is performed to excavate the ground that is the foundation of the structure by a certain depth. If the infiltrated water is eluted into the interior of the foundation, it is not only difficult to work, but it may have a fatal adverse effect on the strength and safety of the structure to be constructed. Over the inside of the foundation site, a water barrier is constructed to block groundwater or infiltration water from being eluted.

As one of the commonly used methods for constructing such a barrier wall, a pile ball having a predetermined diameter is drilled on the ground in a columnar manner using an auger machine provided in a ground drilling equipment, and then concrete is poured into the drilled pile ball. A method for forming a wall by forming a wall is widely known.

However, after the curing of the primary concrete pile poured into the primary pile is completed, the secondary concrete pile must be poured to puncture the secondary pile so that the construction period is not only longer, but also the primary concrete pile and secondary concrete. There is a problem in that it takes a lot of time and money since a separate construction for constructing a structure for using a file gap is required to prevent a gap between the primary concrete pile and the second concrete pile even after the construction of the pile.

Moreover, as the casing buried before the curing of the poured concrete has to be drawn, a separate reinforcing bar reinforcing material such as an H-beam for maintenance of strength must be buried, which increases the city park price, increases economic efficiency and significantly lowers work efficiency. have.

As a conventional technique, a casing indentation device of a mudguard construction, which is a registered patent 10-0984762, and a mud construction method using the same have been devised, which support the casing by holding it, lower the casing, and lower the support portion for forced press burial, and the mounting of the casing The upper support part is opened as much as possible, and the lower support part is provided with a gripping part for forcibly gripping and releasing the outer surface of the casing, so that the installation height from the ground is not high, under the high-voltage line, under the bridge, or inside the factory. Construction is possible, and the casing on the ground is vertically buried by a forced press method to improve the verticality of the casing, and the pile is formed by the adsorption or binding force between sand and soil by filling the sand inside the casing rather than pouring concrete. It is possible to significantly reduce the increase in time due to curing of concrete.

However, since the conventional casing is formed in a circular shape, when two casings are joined to each other by filling cement mortar between the two casings formed in a circular shape, a gap is formed as the two casings are contacted by a line contact, thereby providing a perfect waterproof construction. There are difficult problems.

Accordingly, it is not possible to firmly support the earth pressure after construction, causing a problem in that the water barrier collapses.

Patent Document 1: Republic of Korea Registered Patent 10-0984762 (2010.09.27. registration) Patent Document 2: Republic of Korea Registered Patent No. 10-1742812 (2017.05.26. registered)

The present invention prevents the gap between the rectangular steel pipe casing and the rectangular steel pipe casing by the surface contact, and the length of the rectangular steel pipe casing inside, as the rectangular steel pipe casing made of a rectangular shape is in close contact with each other to make a surface contact with each other. The purpose of the present invention is to provide a square-shaped steel pipe for construction of a retaining wall and a method of constructing a retaining wall using the same so that the supportability and the robustness of the square-shaped steel tube casing can be greatly improved without additional construction such as rebar construction by inserting reinforcing steel pipes along the direction. .

As a means for achieving the above object, the square-shaped steel pipe for construction of a mudguard according to the present invention, in a square-shaped steel pipe including a casing body made of a square shape and press-fitted against the ground, in the vertical length direction in which the inside is hollow and the upper and lower parts are open An elongated casing body; Each of the upper ends of the casing body includes a guide support that is welded to each other by welding, and at both ends of the casing body, first departure prevention guide rails and second departures facing each other along the vertical length direction of the casing body. Prevention guide rails are respectively provided, and the first departure prevention guide rail and the second departure prevention guide rail have one side of the first departure prevention guide rail and the second departure prevention guide rail for both ends of the casing body. It is welded and welded to both ends of one side of the casing body, and the other side surfaces of the first departure prevention guide rail and the second departure prevention guide rail are respectively provided to protrude from both ends of the casing body.

Further, a first support reinforcement and a second support reinforcement are provided to be inserted into the open upper side of the casing body and accommodated along the longitudinal direction inside the casing body to improve the robustness of the mortar filled in the casing body.

In addition, the method of constructing a retainer using a square steel pipe according to the present invention is a first process of inserting the first casing body under the ground by vibration press-in and simultaneously discharging the soil inside the first casing body inserted under the ground by screws. ; After the first process, the second casing body is positioned on the upper side of the first casing body, but the second casing body is positioned inside the first and second anti-separation guide rails provided in the first casing body to be in close contact. A second process of inserting the second casing body under the ground by vibration press-fitting and simultaneously discharging the soil inside the second casing body which is inserted under the ground by a screw; A third step of filling and filling a high-strength mortar mixed with concrete and a solidifying agent at a high pressure inside the first casing body inserted under the ground by the first step after the second step; A fourth step of filling and filling a high-strength mortar mixed with concrete and a solidifying agent at a high pressure inside the second casing body inserted under the ground by the second process after the third process; After the fourth process, the third casing body is placed on one side of the upper part of the second casing body, but the third casing body is located inside the first and second anti-separation guide rails provided in the second casing body to be in close contact. After inserting the third casing body under the ground by vibration press-in, at the same time, the soil inside the third casing body, which is inserted under the ground by the screw, is discharged out, and the concrete and go inside the third casing body inserted under the ground. A fifth step of filling and filling the high-strength mortar mixed with high pressure at a high pressure; After the fifth process, the fourth casing body is placed on one side of the upper part of the third casing body, but the fourth casing body is located inside the first and second anti-separation guide rails provided in the third casing body to be in close contact. After inserting the fourth casing body under the ground by vibration press-in, at the same time, the soil inside the fourth casing body, which is inserted under the ground by the screw, is discharged out, and the concrete and go inside the fourth casing body inserted under the ground. A sixth process for filling and filling a high-strength mortar mixed with high pressure at a high pressure; After the 6th process, the first casing body filled with high-strength mortar is filled from the ground by the third process after being inserted under the ground by the first process, and then placed on the upper side of the fourth casing body again, but on the fourth casing body. After the first casing body and the second casing body are positioned inside the first separating prevention guide rail and the second separating prevention guide rail, the first casing body is inserted below the ground by vibration press-in, and at the same time by the screw, under the ground. A seventh process of discharging the soil inside the inserted first casing body and filling and filling a high-strength mortar mixed with concrete and solidifying agent inside the first casing body inserted under the ground with high pressure; It is made to install a continuous wall on the ground by the continuous construction of the first to seventh process to be provided to construct the earth retaining.

According to the present invention, as the construction of the soil is applied to the ground, the plurality of casing bodies are closely adhered to each other by the vibration intrusion method to be inserted into the ground, and thus, the ground insertion construction operation of the casing body is facilitated by the vibration intrusion method rather than the rotation method. As the supreme casing body is made of square steel pipes, it can be in close contact with each other, so it can have strong durability and supportability against the transmitted earth pressure, preventing the casing body from bending or collapsing, as well as safety for construction of earthenware. It is possible to shorten the economic efficiency and the disclosure period, and it is possible to greatly improve the work efficiency by not having to construct additional reinforcement structures such as reinforcing bars, and it is constructed as the casing body is installed on the guide rail provided in the detachment prevention guide rail provided in the casing body. Accordingly, the casing body can be continuously operated and the verticality of the casing body can be greatly improved.

1 is an exploded perspective view of a state in which a rectangular steel pipe for construction of a mudguard according to the present invention is connected.
Figure 2 is an exploded perspective view of another embodiment of a square steel pipe for mudguard construction according to the present invention.
Figure 3 is an exploded perspective view of another embodiment of the square-shaped steel pipe for mudguard construction according to the present invention.
Figure 4 is a perspective view of another embodiment of a rectangular steel pipe for mudguard construction according to the present invention.
Figure 5 is a perspective view of another embodiment of the square-shaped steel pipe for mudguard construction according to the present invention.
Figure 6 is a process flow chart showing the process of the method of construction of a mud using a square steel pipe for mud construction of the present invention.
7 to 10 is a process plane configuration diagram showing the process of the method of construction of the earth retaining mud using square-shaped steel pipe for construction of the present inventors.
11 is a process diagram of a method of constructing a retainer using a square steel pipe for constructing a retainer according to the present invention.

Hereinafter, other objects and features of the present invention in addition to the above object will be apparent through the description of the embodiment with reference to the accompanying drawings.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by a person skilled in the art to which the present invention pertains. Terms such as those defined in a commonly used dictionary should be interpreted as having meanings consistent with meanings in the context of related technologies, and should not be interpreted as ideal or excessively formal meanings unless explicitly defined in the present application. Does not.

Hereinafter, with reference to the accompanying drawings, a rectangular steel pipe for constructing a mud according to an embodiment of the present invention and a method for constructing a mud using the same will be described in more detail.

The method of constructing the mudguard of the present invention is constructed by the square steel pipe for mudguard construction of the present invention, and the same configuration will be described by applying the same name and the same reference numerals as it is.

In addition, in the description of the present invention, the first casing body to the fourth casing body are the same as the casing body according to the present invention, and the casing body is denoted by the symbol '10' and the first casing body, the second casing body, The third casing body and the fourth casing body are separately labeled as '10a', '10b', '10c', and '10d' and described.

As shown, the present inventors square-shaped steel pipe for construction, relates to a square-shaped steel pipe including a casing body made of a square and press-fitted against the ground, the inside of which is hollow, and the upper and lower parts are elongated in the vertical length direction It comprises a casing body (10), and guide supports (11), which are respectively welded to both upper surfaces of the casing body (10) by welding.

At this time, the casing body 10 is made of any one of a square or hexagonal or octagonal.

As described above, as the casing body 10 is formed in a square shape, the casing body 10 and the casing body 10 that are in close contact with each other can be constructed in close contact by surface contact rather than linear contact, so that the casing body 10 can be constructed. The strong correspondence to the applied earth pressure acts evenly throughout, thereby preventing the casing body 10 from bending or collapsing.

In addition, both ends of the casing body 10 are provided with first and second departure prevention guide rails 12 and second departure prevention guide rails 13 facing each other along the vertical length direction of the casing body 10.

The first departure prevention guide rail 12 and the second departure prevention guide rail 13, the first departure prevention guide rail 12 and the second departure prevention guide rail (for both ends of the casing body 10) ( One side of 13) is welded and welded to both ends of one side of the casing body 10, and the other side of the first departure prevention guide rail 12 and the second departure prevention guide rail 13 is the casing body ( It is made to be provided to protrude from both ends of one side of 10).

As described above, one side of the first departure prevention guide rail 12 and the second departure prevention guide rail 13 is welded to both ends of one side of the casing body 10 to be in close contact, and the first departure prevention guide rail 12 and the second Between the other side of the first departure-prevention guide rail 12 and the second departure-prevention guide rail 13 protruding by protruding the other side of the departure-prevention guide rail 13 from both ends of one side of the casing body 10, respectively. Since the casing body 10 is continuously positioned on the inside, it can be installed in close contact, so that the applied earth pressure can be more firmly supported.

In addition, since the casing body 10 is in close contact between the protruding other side surfaces of the first departure-prevention guide rail 12 and the second departure-prevention guide rail 13, the casing body on the ground in the vertical direction by vibrating press-fitting method ( When inserting 10), the verticality with respect to the casing body 10 is greatly improved.

At the bottom of the guide support 11 of the present invention, when the casing body 10 is vertically inserted into the ground, an inclined insertion slope guide 11a is provided to be easily inserted into the ground.

As the insertion inclination guide 11a is provided as described above, when the casing body 10 is vertically inserted into the ground for construction, the casing body 10 is more easily inserted and installed toward the ground, thereby improving the workability and construction work. Can significantly shorten the working time.

The present invention, the first support is inserted into the open upper side of the casing body (10) is selectively received along the longitudinal direction inside the casing body (10) to improve the robustness of the mortar filled in the casing body (10) The reinforcement 20 and the second support reinforcement 30 are provided.

As described above, since the first support brace 20 or the second support brace 30 is selectively inserted inside the casing body 10, even if the casing body 10 is removed from the ground and separated, the first support brace 20 Alternatively, since the second support reinforcement 30 is placed as it is in a high-strength high-strength mortar that has been filled and cured, support, durability and robustness to the high-strength mortar are greatly improved.

The first support reinforcement 20 of the present invention is inserted into the open upper side of the casing body 10 and the reinforcement body 21 which is positioned along the vertical longitudinal direction in the hollow interior of the casing body 10, The first support reinforcing piece 22 protrudingly welded to one side of the reinforcing body 21 and both ends protruding from both ends of one side of the reinforcing body 21 and the other side of the reinforcing body 21. And both ends are provided with a second support reinforcing piece 23 respectively protruding from both ends of the other side of the reinforcement body (21).

The first support reinforcement 20 of the present invention made as described above is provided with a first support reinforcement piece 22 and a second support reinforcement piece 23 along the longitudinal direction, respectively, on one side and the other side of the reinforcement body 21. Therefore, when the high-strength mortar is filled and filled in the hollow interior of the casing body 10, the first support brace 20 is impregnated in the high-strength mortar filled and constructed and protruded from the first support brace 20 The durability and robustness between the high-strength mortar and the first support reinforcing bar 20 filled by the first support reinforcing piece 22 and the second support reinforcing piece 23 can be greatly improved, thereby eliminating the need for a separate reinforcing process.

Moreover, as the mortar discharge hole 24 is provided at the bottom of the first support reinforcement 20, when filling the high-strength mortar toward the inner side of the casing body 10 into which the first support reinforcement 20 is inserted, A high-strength mortar is evenly filled and filled between the first support brace 20 and the casing body 10, and the high-strength mortar filled in the first support brace 20 exits from the lower side of the first support brace 20 and casing. The high-strength mortar filled when the body 10 is taken out of the ground and the first support reinforcement 20 can be firmly supported.

The method of constructing a retaining membrane using the rectangular steel pipe according to the present invention includes a first process (S1), a second process (S2), a third process (S3), a fourth process (S4), a fifth process (S5), and a sixth process ( As S6) and 7th process (S7) are continuously performed, a mudguard construction is performed.

In the first step (S1) of the present invention, the first casing body 10a is inserted under the ground by vibration press-in, and at the same time, the soil inside the first casing body 10a inserted under the ground by a screw is out. It is a discharge process.

That is, the first casing body 10a is forcibly vertically pressurized by a vibration pressing method to the ground of the section to be constructed with the earth retainer, and the first casing body 10a is inserted at the same time as the first casing body 10a. The soil remaining inside the hollow is discharged to the upper side of the first casing body (10a) using a screw.

After the first casing body 10a is inserted into the ground as described above, the second casing body 10b is inserted into the ground by the second step (S2) of the present invention.

At this time, the second casing body (10b) is located on the upper side of the first casing body (10a), but the first casing body (10a) provided in the first casing prevention guide rail (12) and the second cascade prevention guide rail ( 13) After the second casing body (10b) is positioned to be in close contact with the inside, the second casing body (10b) is forcibly inserted under the ground by vibration press-in, and at the same time, the second casing body (inserted under the ground by screws) ( 10b) The soil inside is discharged out.

After the first casing body (10a) and the second casing body (10b) is inserted into the ground as described above, the concrete inside the first casing body (10a) inserted below the ground by the third step (S3) of the present invention And filling the high-strength mortar mixed with a solidifying agent at high pressure.

In addition, the second casing body 10b inserted into the ground by the fourth step (S4) of the present invention is filled with high-strength mortar mixed with concrete and solidifying agent at high pressure to fill it.

As described above, the first casing body 10a and the second casing body 10b are filled and filled with high-strength mortar, respectively, and then the third casing body 10c is second-cased by the fifth process (S5) of the present invention. Located on the upper side of the body (10b), the third casing body (10c) is inserted under the ground by vibration press-in, and at the same time, the soil inside the third casing body (10c) inserted under the ground by a screw is discharged out. Fill and fill the high-strength mortar mixed with concrete and solidifying agent inside the third casing body (10c) inserted under the ground at high pressure.

When inserting the third casing body (10c), the first casing prevention guide rail (12) and the second escape prevention guide rail (13) provided in the second casing body (10b) inside the third casing body (3) After 10c) is positioned to be in close contact, the third casing body 10c is vertically inserted under the ground so that the second casing body 10b and the third casing body 10c are firmly supported with respect to each other.

In addition, by the sixth step (S6) of the present invention, the fourth casing body 10d is located on the upper side of the third casing body 10c, and the first departure preventing guide rail provided on the third casing body 10c ( 12) After the 4th casing body 10d is positioned so that the 4th casing body 10d is in close contact with the inside of the 2nd departure prevention guide rail 13, the 4th casing body 10d is inserted below the ground by vibration pressing and at the same time under the ground by screws. The inside of the fourth casing body 10d inserted into the soil is discharged out, and the high-strength mortar mixed with concrete and a solidifying agent is filled with high pressure and filled in the fourth casing body 10d inserted under the ground.

When the construction of the sixth step (S6) is completed as described above, the curing of the high-strength mortar filled and filled with the inner body of the first casing body (10a) is completed to a certain extent by the third step (S3). After being inserted under the ground by the first process (S1) by the process (S7), the first casing body (10a) filled and filled with high-strength mortar is removed from the ground by the third process (S3), and then fourth again. The casing body (10d) is located on the upper side, but the first casing body (10a) is located inside the first separation prevention guide rail (12) and the second separation prevention guide rail (13) provided on the fourth casing body (10d). After being placed in close contact with each other, the first casing body 10a is inserted under the ground by vibration press-in, and at the same time, the soil inside the first casing body 10a inserted under the ground by a screw is discharged out and inserted under the ground. Fill the high-strength mortar mixed with concrete and solidifying agent inside the first casing body (10a) with high pressure.

By the continuous construction of the first process (S1) to the seventh process (S7) as described above, the present invention proceeds with the construction of a mudguard using square-shaped steel pipe for mudguard construction, and the continuous wall is completed on the ground.

The present invention is filled with high-strength mortar inside the first casing body (10a), the second casing body (10b), the third casing body (10c) and the fourth casing body (10d) to maintain a close contact with each other When filling with high-strength mortar, the first casing body 10a, the second casing body 10b, the third casing body 10c, and the fourth casing body 10d are pulled out to the lower side, respectively, and each first casing body (10a), since the second casing body (10b), the third casing body (10c) and the fourth casing body (10d) is filled to the upper side, the first casing body (10a), the second casing body (10b), the second Water and foreign substances remaining between each of the 3 casing bodies 10c and the 4th casing bodies 10d can be discharged to prevent the strength of the filled high-strength mortar from deteriorating, and the soil and water can be prevented. At the same time, it can be prevented, greatly reducing the safety, economics, and disclosure period.

In addition, the present invention is the first casing body (10a), the second casing body (10b), the third casing body (10c) and the fourth in the course of the first process (S1) to the seventh process (S7) Any one of the first support reinforcement 20 or the second support reinforcement 30 may be inserted into any one of the casing bodies 10d to be constructed.

As described above, either the first supporting body 20 or the second supporting body 30 is provided with the first casing body 10a, the second casing body 10b, the third casing body 10c, and the fourth casing body. (10d) is inserted and installed inside, the first casing body (10a), the second casing body (10b), the third casing body (10c) and the fourth casing body (10d) is inserted when taking out from the ground, respectively The first support brace 20 or the second support brace 30 does not fall out of the ground and maintains the position as it is inside the high strength mortar, the first casing body 10a, the second casing body 10b, The durability and robustness of the high-strength mortar filled in the third casing body 10c and the fourth casing body 10d may be further improved.

As described above, the present invention has been described by specific matters such as specific components, etc., and by limited embodiments and drawings, which are provided to help the overall understanding of the present invention, but the present invention is not limited to the above embodiments , Anyone having ordinary knowledge in the field to which the present invention pertains can make various modifications and variations from these descriptions.

Accordingly, the spirit of the present invention should not be limited to the described embodiments, and should not be determined, and all claims that are equivalent to or equivalent to the claims, as well as the claims to be described later, belong to the scope of the spirit of the present invention. .

10: casing body 10a: the first casing body
10b: second casing body 10c: third casing body
10d: 4th casing body 11: Guide support
11a: Insertion slope guide 12: 1st departure prevention guide rail
13: 2nd departure prevention guide rail 20: 1st support reinforcement
21: reinforcement body 22: first support reinforcement
23: second support reinforcement 24: mortar discharge hole
30: 2nd support reinforcement
S1: First process S2: Second process
S3: 3rd process S4: 4th process
S5: 5th process S6: 6th process
S7: 7th process

Claims (7)

The casing body 10 is elongated in the vertical longitudinal direction with a hollow inside and a top and a bottom open in a square steel pipe including a casing body made of a prismatic shape and vertically pressed against the ground, and both upper surfaces of the casing body 10 To each includes a guide support (11) is provided by welding by welding work,
In both ends of one side of the casing body 10 is provided with a first departure prevention guide rail 12 and a second departure prevention guide rail 13 facing each other along the vertical length direction of the casing body 10,
When the casing body 10 is vertically inserted into the ground, an inclined insertion inclined guide 11a is provided at the bottom of the guide support 11 so as to be easily inserted into the ground.
The first departure prevention guide rail 12 and the second departure prevention guide rail 13,
The one side of the first departure prevention guide rail 12 and the second departure prevention guide rail 13 are welded to both ends of one side of the casing body 10, respectively, and welded to both ends of one side of the casing body 10,
The other side surfaces of the first departure prevention guide rail 12 and the second departure prevention guide rail 13 are protruded from both ends of one side of the casing body 10, respectively.
The first support reinforcement 20 which is inserted into the open upper side of the casing body 10 and is selectively received along the longitudinal direction inside the casing body 10 to improve the robustness of the mortar filled inside the casing body 10 And a second support reinforcement (30),
The first support reinforcement 20,
A reinforcing bar body (21) inserted into the open upper side of the casing body (10) and positioned along a vertical longitudinal direction in the hollow interior of the casing body (10);
A first support reinforcing piece 22 which is welded in close contact with one side of the reinforcing body 21 and both ends protrude from both ends of one side of the reinforcing body 21, respectively;
An angled steel pipe for construction of earth retaining walls, characterized in that it is welded in close contact with the other side of the reinforcing body 21 and the two ends are provided with second supporting reinforcing pieces 23 protruding from both ends of the other side of the reinforcing body 21, respectively.
delete delete delete According to claim 1,
When filling the high-strength mortar toward the inner side of the casing body 10 into which the first support brace 20 is inserted, the high-strength mortar is evenly filled between the first support brace 20 and the casing body 10 to fill and fill the first support brace. (20) so that the high-strength mortar and the first support-strength 20 are filled when the high-strength mortar filled therein is pulled out from the lower side of the first support-strength 20 and the casing body 10 is removed from the ground. At the bottom of the first support reinforcement 20, a rectangular steel pipe for earthing construction characterized in that the mortar discharge hole 24 is provided.
A first step (S1) of inserting the first casing body 10a under the ground by vibration press-in and simultaneously discharging the soil inside the first casing body 10a inserted under the ground by screws;
After the first step (S1), the second casing body (10b) is located on the upper side of the first casing body (10a), but the first departure preventing guide rail (12) and the second departure provided on the first casing body (10a) The second casing body 10b is positioned inside the prevention guide rail 13 to be in close contact, and then the second casing body 10b is inserted below the ground by vibration pressing, and at the same time, it is inserted under the ground by screws. 2 The second process of discharging the soil inside the casing body (10b) (S2);
After the second step (S2), the third step (S3) of filling and filling the high-strength mortar mixed with concrete and solidifying agent inside the first casing body (10a) inserted under the ground by the first step (S1) at high pressure );
After the third process (S3), the fourth process (S4) for filling and filling the high-strength mortar mixed with concrete and solidifying agent inside the second casing body (10b) inserted under the ground by the second process (S2) at high pressure );
After the fourth step (S4), the third casing body 10c is located on the upper side of the second casing body 10b, but the first departure prevention guide rail 12 and the second departure provided in the second casing body 10b are separated. The third casing body 10c is positioned inside the prevention guide rail 13 to be in close contact, and then the third casing body 10c is inserted below the ground by vibration pressing, and at the same time, it is inserted below the ground by screws. A third process (S5) of discharging the soil inside the casing body 10c and filling and filling a high-strength mortar mixed with concrete and a solidifying agent at a high pressure inside the third casing body 10c inserted under the ground;
After the fifth step (S5), the fourth casing body 10d is located on the upper side of the third casing body 10c, but the first departure prevention guide rail 12 and the second departure provided on the third casing body 10c are separated. The fourth casing body 10d is positioned inside the prevention guide rail 13 to be in close contact, and then the fourth casing body 10d is inserted below the ground by vibration press-in, and at the same time, it is inserted below the ground by screws. A sixth process (S6) of discharging the soil inside the 4 casing body 10d and filling and filling a high-strength mortar mixed with concrete and a solidifying agent at a high pressure inside the fourth casing body 10d inserted under the ground;
After the sixth step (S6), the first casing body (10a) filled and filled with high-strength mortar is removed from the ground by the third step (S3) after being inserted under the ground by the first step (S1), and then fourth again. The casing body (10d) is located on the upper side, but the first casing body (10a) is located inside the first separation prevention guide rail (12) and the second separation prevention guide rail (13) provided on the fourth casing body (10d). After being placed in close contact with each other, the first casing body 10a is inserted under the ground by vibration press-in, and at the same time, the soil inside the first casing body 10a inserted under the ground by a screw is discharged out and inserted under the ground. A seventh process (S7) for filling and filling a high-strength mortar mixed with concrete and a solidifying agent inside the first casing body 10a;
The first step (S1) to the seventh step (S7) by the continuous construction by installing a continuous wall on the ground is provided so as to construct the earth retaining method, characterized in that it is provided so as to construct the earth retaining wall.
The method of claim 6,
To improve the durability and robustness of the high-strength mortar filled in the first casing body (10a), the second casing body (10b), the third casing body (10c) and the fourth casing body (10d),
Any one of the first casing body (10a), the second casing body (10b), the third casing body (10c) and the fourth casing body (10d), the first support beam 20 or the second support beam (30) ) Is inserted,
When the first casing body (10a), the second casing body (10b), the third casing body (10c) and the fourth casing body (10d) are removed from the ground, respectively, the first support reinforcement (20) or the second The support reinforcement 30 is provided so as to be located inside the high-strength mortar without falling out of the ground, and a method of constructing a mud using a square steel pipe for mud construction.

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