KR101938578B1 - Steel pipe having a plurality of coupling portions, self supporting type earth retaining structure, and its construction method - Google Patents

Abstract

The present invention relates to a steel pipe pile having a plurality of coupling parts. The present invention comprises: a circular steel pipe; a first coupling part coupled to the left side of the circular steel pipe; a second coupling part coupled to the right side of the circular steel pipe; and a third coupling part coupled to the rear surface of the circular steel pipe. The first coupling part includes a first arch having an arc shape contacting the left side surface of the steel pipe and a first ring having a ring shape coupled to the center part of the first arch. The second coupling part includes a second arch having an arc shape contacting the right side surface of the steel pipe and a second ring having a ring shape coupled to the center part of the second arch. The third coupling part includes a third arch having an arc shape contacting the rear surface of the steel pipe and a pair of third rings having a ring shape coupled to both ends of the third arch. The rigidity is reinforced, and the coupling with other members is facilitated and strong. A steel pipe pile having a plurality of coupling parts is formed by having a plurality of coupling parts in a circular steel pipe. Thus, a seat pile, a first standing member, a second standing member, and a third standing member are quickly and firmly installed through the coupling parts coupled to the steel pipe pile. Therefore, the present invention can provide an effect of simply and firmly installing a retaining wall.

Description

TECHNICAL FIELD [0001] The present invention relates to a steel pipe pile having a plurality of joints, a self-supporting type earth retaining structure using the steel pipe pile, and a construction method thereof. [0002]

The present invention relates to a steel pipe pile having a plurality of joints, a self-supporting type earth retaining structure using the steel pipe pile, and a method of constructing the same. More specifically, steel pipe piles are formed by joining a plurality of steel pipes to a steel pipe, The present invention relates to a steel pipe pile having a plurality of joints capable of constructing a retaining wall, an underground crossing facility, an alternation, and the like by forming a self-supporting type earth retaining structure in combination with the self-supporting type earth retaining structure.

A composite file structure formed by combining a sheet file with a file can be usefully used as an underground earth retaining wall in construction of various civil engineering structures such as a retaining wall, an underground crossing facility, and a bridge alternation.

For example, Korean Patent No. 10-0709304 entitled "Civil Engineering Structures Using Synthetic Piles and Steel Sheet Piles and Method for Construction thereof" is disclosed. This prior art method comprises the steps of hitting a vertical member composed of a composite pile 10 and a steel sheet pile 14 on a target ground G; Constructing an upper slab (20) at the upper end of the synthetic pile (10) and the steel sheet pile (14) of the vertical member; Drilling a lower portion of the upper slab (20) to construct a lower slab (22); Cleaning the exposed surface of the synthetic pile (10) and the steel sheet pile (14) of the vertical member and performing a predetermined method process; And a step of installing a finishing member on the exposed surface of the vertical member to sequentially construct the three-dimensional intersection facility, the method comprising the steps of: And a method for constructing a civil engineering structure using a synthetic pile and a steel sheet pile (refer to claim 19), wherein the composite pile is formed by pouring and curing the concrete in the vertical member and the pattern molding The composite pile supports both vertical and horizontal loads. The steel sheet pile supports the earth pressure. The steel sheet pile wall replaces the existing pile wall. The weak vertical support force of the steel sheet pile is supported by the synthesized pile. And the role of support pile to form the civil engineering structure, drastically shorten the construction period and omit unnecessary processes, In order to reduce the cost.

However, in the conventional art, it is necessary to weld along the contact line of the pile in order to join the H file to the synthetic pile. When the position of the welding is formed inside the steel sheet pile, the welding is not easy, And efforts are required. In addition, the combined structure of the synthetic pile and the steel sheet pile has a problem in that a separate supporting member such as a strut bone or an anchor is required to be installed due to lack of self-supporting property.

Korean Patent No. 10-0716598 "Retaining wall using steel sheet pile and synthetic pile and method of construction thereof" is disclosed.

However, when the height of the retaining wall is increased, it is difficult to effectively cope with the earth pressure of the composite pile, so that there is a problem that a separate supporting member such as an earth anchor is required to be installed.

Therefore, it is necessary to develop a self-supporting type earth retaining structure capable of quickly and firmly coupling a sheet file to a round steel pipe and capable of self-sustaining without any supporting member or earth anchor regardless of the height of the retaining wall.

Patent 1: Korean Patent No. 10-0709304 Patent 2: Korean Patent No. 10-1829245 Patent 3: Korean Patent No. 10-0716598

In order to solve the above-mentioned problems, the present invention is characterized in that a plurality of coupling holes are provided in a round steel pipe, whereby the first independent member, the seat pile, and the like can be quickly and firmly coupled, The present invention provides a self-supporting type earth retaining structure using the same, and a construction method thereof.

A steel pipe pile having a plurality of fittings according to an example of the present invention includes a round steel pipe; A first coupling member coupled to the left side of the circular steel pipe; A second coupling member coupled to the right side of the circular steel pipe; And a third coupling port coupled to a rear surface of the circular steel pipe, wherein the first coupling port includes a first arch which is formed in contact with a left side surface of the steel pipe, and an annular first arch which is connected to a central portion of the first arch And the second engagement portion includes a second arch having a shape of arc which is provided in contact with the right side surface of the steel pipe and a second annular ring coupled to a central portion of the second arch, The third coupling means includes a third arch of an arc shape provided in contact with the rear surface of the steel pipe and a pair of third rings of an annular shape coupled to both ends of the third arch so that rigidity is reinforced, So as to firmly and easily engage with each other.

The first arch and the second arch are coupled to the steel pipe by a pair of bolts and nuts arranged in an X-shape passing through the center of the steel pipe. The third arch is connected to the center portion of the third arch, And is connected to the steel pipe by bolts and nuts passing through the center of the steel pipe.

Further, a water resistance plate may be provided between the first arch, the second arch, the third arch, and the steel pipe.

The apparatus may further include a pair of arc-shaped connecting arches connecting the first and third arches, the second and third arches, and contacting the steel pipe.

Further, the self-supporting type earth retaining structure using a steel pipe pile having a plurality of engaging holes as an example of the present invention is characterized in that a sheet file having a trapezoidal shape and a connecting portion formed at both ends thereof is connected to the first and second rings have.

And a pair of seat piles having a trapezoidal shape and having a connecting portion formed at both ends thereof, the first and second free standing members being coupled to each other such that the webs come into contact with each other, wherein a connection portion of a pair of seat piles of the first free- And is inserted into the third loop at the same time to be inserted into the third loop.

Further, a pair of seat piles having a trapezoidal shape and having a connecting portion formed at both ends thereof may further include a second self-standing member provided so as to face the concave portions facing each other, And a connection portion of a pair of seat files of the member is inserted into the third ring at the same time by being slidably inserted.

The apparatus may further include a third self-standing member having a pair of sheet piles formed in a shape of a straight line and having connecting portions formed at both ends of the first and second self-standing members, And a connecting portion of the pair of seat files is inserted into the pair of third rings at the same time by being slidably inserted.

According to another aspect of the present invention, there is provided a method of constructing a self-supporting type earth retaining structure using a steel pipe pile having a plurality of engaging holes, the method comprising: installing a casing while forming a first drilling hole in an auger; And a second joint which is coupled to the right side of the circular steel pipe and a third joint which is coupled to the rear surface of the circular steel pipe, Wherein the first engagement portion includes a first arch having an arc shape provided in contact with a left side surface of the steel pipe and an annular first ring coupled to a central portion of the first arch, And an annular second ring connected to a center portion of the second arch, wherein the third coupling hole is formed in a shape of arc, which is provided in contact with the back surface of the steel pipe Inserting a steel pipe pile having a plurality of fittings including a third arch and a pair of annular rings coupled to opposite ends of the third arch; Drawing the casing while filling sand inside the first drilling hole; Inserting an open casing into which the first drilling hole is opened while forming a second drilling hole so as to overlap with the first drilling hole on the side of the third drilling hole; A pair of sheet piles having a trapezoidal shape in the second drilling hole and having a connecting portion formed at both ends thereof are slidably inserted into a pair of third rings of the third coupling means at the same time, So as to be joined; Drawing the open casing while filling sand in the second drilling hole; Inserting an open casing in which the second drilling cavity is opened while forming a third drilling hole so as to overlap with the second drilling hole; And a pair of seat piles having a trapezoidal shape in the third drilling hole and having a connecting portion formed at both ends thereof are provided so as to face each other with the concave portions facing each other, and a C-shaped connecting steel pipe is installed therebetween, Inserting the first and second free-standing members into the connection portion of the first free-standing member so that the second free-standing member is slidably inserted into the connection portion of the first free-standing member. In order.

Inserting an open casing with the first drilling hole opened in the side of the first drilling hole while forming a fourth drilling hole so as to overlap with the first drilling hole; Inserting a connecting portion of a sheet pile having a trapezoidal shape in the fourth drilling hole and a connecting portion formed at both ends thereof into a first annular groove of the first annular groove or a second annular groove of the second annular groove; And drawing the open casing while filling the sand into the fourth drilling hole.

The present invention provides a self supporting type earth retaining structure using a steel pipe pile in which a plurality of coupling holes are coupled to a round steel pipe, so that it is excellent not only in horizontal load but also in vertical load.

In addition, by forming a self-supporting type earth retaining structure by combining a seat file and the like in a sliding manner, it is possible to apply the construction quickly, which is useful for urgent restoration due to heavy rainfall or construction of a complicated urban area.

In addition, by inserting steel pipe pile or the like into the ground by means of perforation or the like, complicated concrete construction process is unnecessary, the construction is simple, the construction cost is saved, and the workability is excellent.

Further, by joining the plurality of coupling holes to the circular steel pipe with the bolts and the nuts, there is no problem in the welding work, and the effort for welding is reduced, so that the steel pipe pile can be manufactured quickly.

Further, by sliding the first free-standing member or the like on the rear surface of the steel pipe pile, it is unnecessary to install a strut or an earth anchor, thereby facilitating subsequent work and minimizing the influence on the rear structure.

FIGS. 1A and 1B are exploded plan views of a steel pipe pile having a plurality of fittings according to an example of the present invention, and plan views showing a state in which a sheet pile is coupled to the steel pipe pile.
FIGS. 2A and 2B are views showing a plurality of coupling ports formed integrally in FIGS. 1A and 1B.
3A and 3B are views showing a state in which a first free standing member is slidably inserted into a steel pipe pile having a plurality of fittings according to an example of the present invention.
3C and 3D are views showing a state in which a third independent member is slidably inserted into a steel pipe pile having a plurality of fittings according to an example of the present invention.
FIGS. 4A to 4F are views showing embodiments of a self-supporting earth retaining structure formed by combining first, second, and third independent members and a sheet pile in a steel pipe pile having a plurality of joints according to the present invention by various methods .
FIGS. 5A to 5E are construction flowcharts showing steps of constructing the self-standing members on the back surface of a steel pipe pile having a plurality of fittings according to an example of the present invention.

Hereinafter, some embodiments of the present invention will be described in detail with reference to exemplary drawings. In the drawings, like reference numerals are used to refer to like elements throughout the drawings, even if they are shown in different drawings. In the following description of the embodiments of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the difference that the embodiments of the present invention are not conclusive.

In describing the components of the embodiment of the present invention, terms such as first, second, A, B, (a), and (b) may be used. These terms are intended to distinguish the constituent elements from other constituent elements, and the terms do not limit the nature, order or order of the constituent elements. When a component is described as being "connected", "coupled", or "connected" to another component, the component may be directly connected or connected to the other component, May be "connected "," coupled "or" connected ".

1 to 5, a steel pipe pile having a plurality of fittings according to an exemplary embodiment of the present invention, a retaining structure using the steel pipe pile, and a construction method thereof will be described in detail.

Referring to FIG. 1, a steel pipe pile having a plurality of fittings according to an exemplary embodiment of the present invention includes a circular steel pipe 10; A first coupling member 12 coupled to the left side of the round steel pipe 10; A second coupling member 14 coupled to the right side of the circular steel pipe 10; And a third coupling member 16 coupled to a rear surface of the circular steel pipe 10.

Hereinafter, the circular steel pipe will be referred to as a steel pipe.

The steel pipe 10 may be hollow hollow. The inside of the steel pipe 10 can be filled with concrete or the like. The steel pipe 10 can be installed by inserting the ground after piercing it with an auger or the like. The concrete can be inserted into the lower portion of the cloth tool before inserting the steel pipe 10, and then inserted. Further, the steel pipe 10 can be further strengthened to be supported more firmly after being inserted.

The first fitting hole 12 may be coupled to the left side of the steel pipe 10. The first coupling member 12 includes an arc-shaped first arch 122 provided in contact with the left side surface of the steel pipe 10, a first annular ring 124 coupled to a central portion of the first arch 122, . ≪ / RTI > The first arch 122 and the first ring 124 may be fabricated separately and then welded together, or may be integrally fabricated.

The first arch 122 may be arc-shaped in close contact with the outer surface of the steel pipe 10. The first ring 124 may be coupled to the center of the first arch 122. The first ring 124 is protruded outward from the center of the first arch 122. The first annulus 124 may be joined to the sheet pile to form a retaining structure. That is, by connecting the seat files through the first loop 124 in a sliding manner, the self-supporting earth retaining structure can be easily formed.

A second coupling hole 14 can be coupled to the right side of the steel pipe 10. The second coupling member 14 includes an arc-shaped second arch 142 disposed in contact with the right side surface of the steel pipe 10 and a second annular ring 144 coupled to a central portion of the second arch 142 . The second arch 142 and the second ring 144 may be separately fabricated and welded together, or may be integrally fabricated.

The second arch 142 may be arc-shaped in close contact with the outer surface of the steel pipe 10. The second ring 144 may be coupled to the center of the second arch 142. The second ring 144 protrudes outward at the central portion of the second arch 142. The second annulus 144 may be joined to the sheet pile to form a retaining structure. That is, by connecting the seat file through the second ring 144 in a sliding manner, the self-supporting earth retaining structure can be easily formed.

The first and second arches 122 and 142 installed on the left and right sides of the steel pipe 10 are tightly coupled by a pair of bolts and nuts arranged in an X- . That is, by inserting bolts in an X-shape using bolt holes formed on the left and right sides of the first ring 124 and bolt holes formed on the right and left sides of the second ring 144, 12 and the second coupling hole 14 can be firmly fastened to the steel pipe 10 at a time.

A watertight plate may be provided between the first arch 122 and the second arch 142 and the pile of the steel pipe 10. This index plate is closely attached to the periphery of the bolt passing through the first arch 122, the second arch 142, and the steel pipe 10, thereby preventing groundwater or the like from penetrating into the steel pipe 10.

The sheet pile coupled to the first ring 124 and the second ring 144 may be a trapezoidal normal sheet pile. Connection portions may be formed at both ends of the sheet file. The connection part has a shape corresponding to the first ring 124 and the second ring 144, and can be simply coupled with a sliding method.

A third coupling hole 16 may be coupled to the back surface of the steel pipe 10. The third coupling member 16 includes a third arch 162 in the form of an arc provided in contact with the rear surface of the steel pipe 10 and a pair of third annular rings 162, (Not shown). The third arch 162 may be arc-shaped in close contact with the outer surface of the steel pipe 10. The pair of third rings 164 may be formed symmetrically at both ends of the third arch 162. Accordingly, the first free-standing member 20, which will be described later, can be easily coupled to the sliding member, and structural stability can be ensured. The pair of third rings 164 may be integrally formed with the third arch 162, or they may be separately manufactured and then joined by welding or the like. The third arch 162 and the third loop 164 may be formed by bending. The first freestanding member 20 and the like, which will be described later, are coupled to the pair of third rings 164 to quickly form a self-supporting earth retaining structure.

The third arch 162 can be coupled to the steel pipe 10 by bolts and nuts passing through the center of the steel pipe 10.

A waterproof plate may be provided between the third arch 162 and the steel pipe 10. This plate is tightly attached to the bolt, thereby preventing the groundwater or the like from flowing into the steel pipe 10.

The first coupling part 12, the second coupling part 14 and the third coupling part 16 are coupled to the outside of the steel pipe 10 to increase the rigidity of the steel pipe 10, So that it can be easily and firmly coupled.

Referring to FIG. 2, a pair of arc-shaped pairs connecting the first arch 122 and the third arch 162, the second arch 142 and the third arch 162, The connecting arch 18 of the first embodiment. The connecting arch 18 is formed in an arc shape so that it can be installed in close contact with the steel pipe 10. The connecting arch 18 may be the same length as the first arch 122, the second arch 142, and the third arch 162. The connecting arch 18 may also be shorter in length than the first arch 122, the second arch 142, and the third arch 162, or may be of a shape that connects the middle middle.

Hereinafter, a self-supporting type earth retaining structure using a steel pipe pile having a plurality of engaging holes according to an embodiment of the present invention will be described with reference to FIGS.

In the present embodiment, the same components as those described above can be omitted from description. The omitted parts apply analogy to the above description.

3A and 3B, the first free standing member 20 can be coupled to the third coupling hole 16 of the steel pipe pile having a plurality of coupling holes. The first free-standing member 20 may be coupled with a pair of sheet piles having a trapezoidal shape and connecting portions at both ends thereof by bolts or the like so that the webs come into contact with each other.

The connecting portions of the pair of seat piles of the first free standing member 20 can be slidably inserted and coupled to the pair of third rings 164 of the third engaging hole 16 at the same time. By connecting the connecting portions of the pair of seat piles to the pair of third rings 164, the steel pipe pile and the first free-standing member 20 can be firmly and quickly combined to form a free-standing type earth retaining structure.

The first free-standing member 20 is coupled with a pair of trapezoidal sheet piles so that the webs come into contact with each other. Accordingly, since the first free-standing member 20 is connected to the back surface of the steel pipe pile, the resistance of the steel pipe pile to the back earth pressure is increased, so that the structural stability of the retaining structure can be increased. Accordingly, a support member such as a ground anchor or a horizontal brace is not required. In addition, the first free-standing member 20 can be easily connected to another first free-standing member 20 on its back surface, thereby greatly increasing the structural stability of the retaining structure.

Further, the second freestanding member 30 can be slidably inserted and coupled to the pair of third rings 164. The second free standing member 30 has a trapezoidal shape and a pair of seat piles in which connecting portions are formed at both ends of the second free standing member 30 so that the concave portions face each other. Then, a C-shaped connecting steel pipe is disposed therebetween and then joined together by bolts, nuts, (See FIG. 4A). The pair of connection portions of the second free standing member 30 can be inserted into the pair of third rings 164 by slidingly inserting them. Accordingly, the second free standing member 30 is firmly coupled to the third ring 164, so that the steel pipe pile and the second free standing member 30 can be firmly and quickly engaged with each other to form a self-supporting type earth retaining structure.

The second self-standing member 30 is formed by a pair of trapezoidal sheet piles and a C-shaped connecting steel piece joined together by bolts and nuts. The second self-standing member 30 has excellent bending stiffness in the longitudinal, The structural stability of the retaining structure can be increased by the frictional force with the back ground caused by the flanges protruding from both sides and the resistance due to the self weight due to the ground soil introduced into the closed space. Accordingly, a self-supporting earth retaining structure can be formed in which a separate supporting member such as a ground anchor or a horizontal supporting member is not required. The second self-supporting structure 30 can be easily and easily installed by easily connecting another first self-standing member 20 and a second self-standing member 30 to the second self-standing member 30, At the same time, the structural stability of the retaining structure can be drastically increased.

Referring to FIGS. 3c and 3d, the third free standing member 40 is slidably inserted into the pair of third rings 164 of the third coupling member 16. The third free standing member 40 may be formed by arranging a pair of sheet piles having a straight shape and connecting portions formed at both ends thereof in parallel, arranging a C-shaped connecting steel pipe therebetween, and then joining them with bolts, nuts, . The pair of connection portions of the third free standing member 40 may be inserted into the pair of third rings 164 by slidingly inserting them. Accordingly, the third independent member 40 is firmly coupled to the third annular member 164, so that the steel pipe pile and the third independent member 40 can be firmly and quickly engaged with each other to form a self-supporting earth retaining structure.

The third self-standing member 40 is formed by connecting a pair of straight sheet-shaped files and a C-shaped connecting-shaped steel with bolts and nuts. The third self-standing member 40 is provided with a frictional force between the side surface of the third self- The structural stability of the retaining structure can be increased by the resistance of the ground soil inserted into the space. Accordingly, a separate support member such as a ground anchor or a horizontal brace may not be required. The third independent member 40 is easily connected to the third independent member 40 such that the first independent member 20, the second independent member 30, the third independent member 40, The structure can be easily and easily installed and the structural stability of the earth retaining structure can be remarkably increased.

4, the seat file is slidably coupled to the left and right sides of the steel pipe pile, and the first, second, third, and fourth free standing members 20, 30, The sliding member 164 is inserted and inserted into the sliding member 164, so that the self-supporting type earth retaining structure can be constructed rapidly and firmly. The first, second, and third free standing members 20, 30, and third free standing members 40 may be connected by connecting the same one continuously or by mixing the other. Also, by connecting the self-standing members connected to the back surface of the steel pipe pile to each other by using the seat piles, the self-supporting type earth retaining structure can be formed into one large closed space, thereby greatly increasing the structural stability.

The direction of the connection of the first ring 124, the second ring 144, the third ring 164, the first and second independent members 20, 30, and 40 in the above-described embodiments is shown in the drawing As shown in Fig.

3 and 5, a method of constructing a self-supporting type earth retaining structure using a steel pipe pile having a plurality of engagement holes according to an exemplary embodiment of the present invention will be described in detail.

The configurations of this embodiment refer to the configurations of the above-described embodiments.

A method of constructing a self-supporting earth retaining structure using a steel pipe pile having a plurality of joints according to an embodiment of the present invention includes: installing a casing while forming a first drilling hole (50) in an auger; A first coupling hole 12 is formed in the first drilling hole 50 to be connected to the steel pipe 10 and the left side of the steel pipe 10 and a second coupling hole 12 to be coupled to the right side of the steel pipe 10, And a third coupling member 16 coupled to a rear surface of the steel pipe 10 and having a first engagement portion 12 and a second engagement portion 14 formed to be in contact with the left side surface of the steel pipe 10, And a first ring 122 of the annular shape and an annular first ring 124 joined to the center of the first arch 122. The second engagement hole 14 is formed on the right side of the steel pipe 10 Shaped second arch 142 and an annular second ring 144 coupled to a central portion of the second arch 142. The third coupling member 16 is connected to the steel pipe And a plurality of annular rings (164) coupled to both ends of the third arch (162) and a third arch (162) formed in contact with the back surface of the third arch (162) A steel pipe pile having In stock in step; Drawing the casing while filling sand inside the first drilling hole (50); Inserting an open casing opened on the side of the first drilling hole (50) while forming a second drilling hole (52) on the side of the third engaging hole (16) so as to overlap with the first drilling hole (50); A pair of sheet piles having a trapezoidal shape in the second drilling hole (52) and connecting portions at both ends are connected to the first free standing member (20) so that the webs are in contact with each other. Inserting the third loop 164 to be inserted into the pair of third rings 164 at the same time; Drawing the open casing while filling the second drilling hole (52) with sand; Inserting an open casing having an open side of the second drilling hole (52) while forming a third drilling hole (54) so as to overlap with the second drilling hole (52); And a pair of seat piles having a trapezoidal shape in the third drilling hole (54) and a connecting portion formed at both ends thereof are provided so as to face each other with the concave portions facing each other, and a C-shaped connecting steel pipe is provided therebetween, 30) is inserted into the connection portion of the first free-standing member (20) so that the connection portion is slidably inserted into the connection portion of the first free-standing member (20). The construction can be done in order.

The step of installing the casing is a step of inserting the casing while forming the first excavation hole (50) by excavating the auger ground with the casing on the outside. That is, the first excavation holes 50 are formed through the auger at a point where the steel pipe pile of the earth retaining structure is planned to be installed, and the casing is inserted to prevent the collapse of the ground. In the above step, the casing may not be installed considering the hardness of the ground.

The step of inserting the steel pipe pile includes the steps of: attaching a steel pipe 10 to the first drilling hole 50 from which the auger has been taken out, a first fitting hole 12 to be respectively connected to the left, right and rear surfaces of the steel pipe 10, A joint 14, and a third joint 16 are inserted. At this stage, it is possible to place the concrete under the first drilling hole 50 or to stoke the steel pipe pile. The first coupling port 12, the second coupling port 14, and the third coupling port 16 in this step may be connected to the coupling arch 18.

The step of drawing out the casing is a step of drawing out the casing while filling the outer surface of the steel pipe pile, that is, the inside of the first drilling hole 50 with sand or the like.

In the step of inserting the open casing, the second excavating hole 52 is formed on the back surface of the steel pipe pile, that is, on the side of the third engaging hole 16 so as to overlap with the first excavating hole 50, And inserting the opened open casing. That is, the second excavation hole 52 is formed so as to be close to the third coupling hole 16 of the already inserted steel pipe pile while the casing is opened in the longitudinal direction on the first excavation hole 50 side . The open casing is for coupling the first free-standing member 20 to the third coupling hole 16 of the steel pipe pile in a step to be described later.

The step of inserting the first free standing member 20 includes a step of drawing a pair of sheet piles having a trapezoidal shape in the second drilling hole 52 and a connecting portion formed at both ends after the auger is pulled out, The step of inserting the member 20 such that the pair of connection portions are slidably inserted into the pair of third rings 164 of the third coupling opening 16 at the same time. In this step, the connecting portion of the first free standing member 20 is aligned with the pair of third hooks 164 of the third coupling member 16, and then vibration-press-fitting is performed from the upper side to the lower side to the planned depth, can do. In this step, the second self-standing member 30, the third self-standing member 40 and the like may be used instead of the first self-standing member 20.

The step of pulling out the open casing is a step of pulling out the open casing while filling the outside of the first free standing member 20, that is, the inside of the second drilling hole 52 with sand or the like.

The step of inserting the open casing while forming the third excavating hole 54 includes the step of forming the third excavating hole 54 so as to overlap with the second excavating hole 52 while opening the second excavating hole 52 side, And inserting the casing. That is, the third excavation hole 54 is inserted into the casing while being formed in the vicinity of the connection portion of the first free standing member 20, and the casing is provided with the second excavation hole 52 in the longitudinal direction An open, open casing is used.

The step of inserting the second free standing member (30) includes a step of forming a pair of sheet piles having a trapezoidal shape in the third drilling hole (54) and having connecting portions at both ends thereof facing each other with the concave portions facing each other, The second free-standing member 30 is inserted into the connection portion of the first free-standing member 20 so that the second free-standing member 30 is inserted into the connection portion of the first free-standing member 20 at the same time.

Inserting an open casing having an open side of the first drilling hole (50) while forming a fourth drilling hole so as to overlap with the first drilling hole (50) on the side of the first drilling hole (50); The connecting portion of the sheet pile having a trapezoidal shape in the fourth drilling hole and a connecting portion formed at both ends is inserted into the first loop 124 of the first coupling hole 12 or the second loop 144 of the second coupling hole 14, So as to be joined; And drawing the open casing while filling the sand with the fourth drilling hole.

The step of inserting the open casing while forming the fourth drilling hole is performed by forming the fourth drilling hole on the side of the first drilling hole 50 so as to overlap the first drilling hole 50 And inserting the opened open casing. That is, the fourth drilling hole is inserted into the first coupling hole 12 and / or the second coupling hole 14 of the steel pipe pile having a plurality of insertion holes provided beforehand, The casing of the first excavation hole 50 uses an open casing in which the first excavation hole 50 is opened in the longitudinal direction.

In the above description, the side surface refers to the left side and / or the right side of the first drilling hole 50. That is, a fourth drilling hole may be formed on the left side surface of the first drilling hole 50 so as to overlap with the first drilling hole 50, or a second drilling hole 50 may be formed on the right side surface of the first drilling hole 50, Or a fourth drilling hole may be formed on both the left and right sides of the first drilling hole 50 so as to overlap with the first drilling hole 50. [

The step of inserting the sheet file comprises the steps of forming a sheet file having a trapezoidal shape in a fourth drilling hole and a connecting portion of a sheet pile having connecting portions formed at both ends thereof, And the second ring 144 of the second coupling hole 14 is slidably inserted into the first ring 124 or the second ring 144 of the second coupling hole 14, respectively.

The step of pulling out the open casing is a step of pulling out the open casing while filling the outside of the sheet pile, that is, the inside of the fourth drilling hole with sand or the like.

As a result, the self-supporting earth retaining structure without an earth anchor can be installed by repeatedly performing the above-described steps to the planned range for forming the earth retaining structure and installing the self-standing member and the seat pile as necessary .

As shown in the figure, the first, second, and third independent members 20, 30, 30, and 30 are formed of the first, second, and third independent members 20, 3 self-standing member 40 can be installed alone or in a mixed manner, and the number of the self-standing member 40 can be variously adjusted in accordance with the rigidity of the planned self-supporting earth retaining structure, thereby ensuring economic efficiency and stability.

The first, second, and third independent members 20, 30, and the third independent member 40 can be easily manufactured using a common sheet file. After use, the first, second and third independent members 30, Can be reused.

While the present invention has been described in connection with what is presently considered to be the most practical and preferred embodiment, it is to be understood that the invention is not limited to the disclosed embodiments. That is, within the scope of the present invention, all the constituent elements may be constituted or operated selectively in combination with one or more. Furthermore, the terms "comprises", "comprising", or "having" described above mean that a component can be implanted unless otherwise specifically stated, But should be construed as including other elements. All terms, 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, unless otherwise defined. Commonly used terms, such as predefined terms, should be interpreted to be consistent with the contextual meanings of the related art, and are not to be construed as ideal or overly formal, unless expressly defined to the contrary.

The foregoing description is merely illustrative of the technical idea of the present invention, and various changes and modifications may be made by those skilled in the art without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are intended to illustrate rather than limit the scope of the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of equivalents should be construed as falling within the scope of the present invention.

10: Steel pipe
12: first coupling hole
122: 1st arch
124: 1st ring
14: second coupling hole
142: 2nd arch
144: Second ring
16: Third coupling port
162: Third arch
164: Third Ring
18: Connecting arches
20: first independent member
30: second independent member
40: third independent member
50: First drilling hole
52: 2nd excavation ball
54: Third excavation ball

Claims (10)

Circular steel pipe;
A first coupling member coupled to the left side of the circular steel pipe;
A second coupling member coupled to the right side of the circular steel pipe;
And a third coupling port coupled to a back surface of the round steel pipe,
Wherein the first engagement portion includes a first arch having an arc shape provided in contact with a left side surface of the steel pipe and an annular first ring coupled to a central portion of the first arch,
Wherein the second engagement hole includes a second arch having an arc shape and being provided in contact with a right side surface of the steel pipe and a second annular ring coupled to a central portion of the second arch,
Wherein the third engagement hole includes a third arch having an arc shape provided in contact with the rear surface of the steel pipe and a pair of third annular rings joined to both ends of the third arch so that the rigidity is reinforced, The coupling with the member is made robust and easy,
Further comprising a pair of arc-shaped connecting arches connecting the first and third arches, the second arch and the third arch, and being installed in contact with the steel pipe. Steel pipe stakes.
The method according to claim 1,
The first arch and the second arch are coupled to the steel pipe by a pair of bolts and nuts arranged in an X-shape passing through the center of the steel pipe,
And the third arch is coupled to the steel pipe by bolts and nuts passing through the center of the third arch and the center of the steel pipe.
The method according to claim 1,
Wherein a steel plate is provided between the first arch, the second arch, the third arch, and the steel pipe.
delete A self-supporting earth retaining structure using a steel pipe pile having a plurality of engaging portions according to any one of claims 1 to 3,
And a seat pile having a trapezoidal shape in the first and second rings and having a connecting portion formed at both ends thereof are connected to each other.
A self-supporting earth retaining structure using a steel pipe pile having a plurality of engaging portions according to any one of claims 1 to 3,
And a pair of sheet piles having a trapezoidal shape and having connecting portions formed at both ends thereof, the first and second free standing members being coupled to each other such that the webs come into contact with each other,
Wherein the connecting portions of the pair of seat piles of the first and second free standing members are simultaneously slidably inserted into the pair of third rings.
A self-supporting earth retaining structure using a steel pipe pile having a plurality of engaging portions according to any one of claims 1 to 3,
A pair of seat piles having a trapezoidal shape and having connecting portions formed at both ends thereof,
Further comprising a second self-standing member which is installed to face each other and which is connected to each other after the C-shaped connecting steel bars are disposed therebetween,
And a connecting portion of a pair of seat piles of the second free standing member is inserted into the pair of third rings at the same time by being slidably inserted.
A self-supporting earth retaining structure using a steel pipe pile having a plurality of engaging portions according to any one of claims 1 to 3,
A pair of sheet files having a straight shape and having connecting portions at both ends thereof are arranged side by side
Further comprising a third self-standing member installed with mutually connected C-shaped connecting steel bars therebetween,
Wherein a connection portion of a pair of seat piles of the third free standing member is slidably inserted and coupled to the pair of third rings at the same time.
Installing a casing while forming a first drilling hole in an auger on the ground;
And a second joint which is coupled to the right side of the circular steel pipe and a third joint which is coupled to the rear surface of the circular steel pipe, Wherein the first engagement portion includes a first arch having an arc shape provided in contact with a left side surface of the steel pipe and an annular first ring coupled to a central portion of the first arch, And an annular second ring connected to a center portion of the second arch, wherein the third coupling hole is formed in a shape of arc, which is provided in contact with the back surface of the steel pipe Inserting a steel pipe pile having a plurality of fittings including a third arch and a pair of annular rings coupled to opposite ends of the third arch;
Drawing the casing while filling sand inside the first drilling hole;
Inserting an open casing into which the first drilling hole is opened while forming a second drilling hole so as to overlap with the first drilling hole on the side of the third drilling hole;
A pair of sheet piles having a trapezoidal shape in the second drilling hole and having a connecting portion formed at both ends thereof are slidably inserted into a pair of third rings of the third coupling means at the same time, So as to be joined;
Drawing the open casing while filling sand in the second drilling hole;
Inserting an open casing in which the second drilling cavity is opened while forming a third drilling hole so as to overlap with the second drilling hole; And
A pair of seat piles having a trapezoidal shape in the third drilling hole and having a connecting portion formed at both ends thereof are provided such that the concave portions face each other, and a C-shaped connecting steel pipe is provided therebetween, Inserting the first and second free standing members so that they are simultaneously slidably inserted into the connecting portion of the first free standing member; A method of constructing a self - supporting type earth retaining structure using a steel pipe pile having a plurality of joints to be installed in order.
The method of claim 9,
Inserting an open casing in the side of the first drilling hole while forming a fourth drilling hole so as to overlap the first drilling hole and opening the first drilling hole;
Inserting a connecting portion of a sheet pile having a trapezoidal shape in the fourth drilling hole and a connecting portion formed at both ends thereof into a first annular groove of the first annular groove or a second annular groove of the second annular groove;
And withdrawing the open casing while filling the sand with the fourth drilling hole. The method of claim 1,

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