KR101026231B1 - Construction Method of Structure Using Pile with Excavating Wing - Google Patents

Abstract

The present invention relates to a method for constructing a structure using a pile with an excavation wing. The construction method of the structure using the pile with the excavation wing of the present invention comprises the steps of: constructing an external earthwall wall along the boundary line of the structure to be constructed; And rotationally inserting the pile with the excavation wings, which are the foundation of the structure, into the wall at a predetermined position. The pile is supported by the excavation wings attached to the pile, and the pile with the excavation wings is It is used as a temporary foundation to support only the load during construction, and after completion of the structure is used as a permanent foundation to support the load of the structure.

Excavating Wing, Pile, Spinning, Structure, Construction

Description

Construction method of a structure using piles with excavation wings {construction method of building using steel pile having drilling blade}

The present invention relates to a method for constructing a structure, and more particularly, to a method for constructing a structure using a pile with an excavation wing, which can effectively excavate the ground, improve resistance to vertical force, and shorten air. .

In general, the building includes a basement floor. In order to build the basement, the construction method of excavating the ground may be used by installing an external mud wall and a thumb pile, installing a floor beam to connect the thumb pile and the thumb pile, or installing a floor beam to connect the thumb pile and the wall.

1 is a process flow diagram illustrating the construction method, Figures 2a to 2g is a view showing a state constructed in accordance with the conventional construction method of the structure, Figure 3 schematically shows a state constructed by the construction method of the structure. Top view.

First, as shown in FIG. 2A, the external earthwall wall 10 is constructed along the boundary line of the structure to be constructed (S10). The outer cladding wall 10 is typically installed to prevent the collapse of the ground.

Next, as shown in Figure 2b, in order to insert the thumb pile (center file) 20 used as a pillar of the structure vertically excavating the hole for the thumb pile 21 (S20). At this time, the thumb pile hole 21 is excavated to have a larger diameter than the thumb pile 20 so that the thumb pile 20 is easily inserted.

When the hole 21 for inserting the thumb pile 20 is formed, as shown in Figure 2c, the load-bearing concrete (PRD, RCD) of the structure is placed in the lower portion of the excavated hole 21 (S30). The concrete is placed by inserting a tremi tube (not shown) into the hole 21 to confirm the depth of concrete placing. The concrete placed in the lower part of the excavated hole 21 is used as a concrete foundation, that is, a load supporting pile 22, to temporarily support a load, not a permanent foundation in the future. This construction method is a PRD (Perocussion Rotary Drill) method, when the concrete is poured, insert the thumb pile 20, which is a steel pile into the hole 21, the concrete is poured (S40) (see Fig. 2d).

When the thumb pile 20 is inserted, as shown in Figure 2e to fill the hole for the thumb pile 21 (S50). This is to prevent the thumb pile 20 from inclining until the concrete is cured because the lower portion of the thumb pile 20 is embedded in concrete. That is, to maintain the vertical degree of the thumb pile 20 to install in place.

On the other hand, in some cases, before installing concrete in the thumb pile hole 21 may be installed using a reverse circulation drill (RCD) method to install concrete after installing the reinforcing bar (not shown) and the steel frame pile. The RCD method has the advantage that the load bearing capacity is larger than that of the PRD method by installing the reinforcing bar network so that it can be used in parallel on a temporary and permanent basis. However, there is a problem that the construction cost is high.

Again, referring to FIG. 2F, when the thumb pile 20 is inserted and the concrete is hardened, the floor beam 30 is installed on the thumb pile 20 (S60), and the ground is excavated (S70). When the floor beams 30 are installed, the ground of the lower part is excavated.

The steps (S60) and (S70) are repeated to establish the basement floor to the target range according to the design construction (S80). That is, since the lower layer is gradually constructed based on the bottom beam 30 of the first floor portion, it is prevented from collapsing due to transverse pressure or self-weight of the structure during gulting.

Finally, as shown in Figure 2g, when the pit to the lowest layer to install a permanent foundation (40) (S90). As described above, the thumb pile 20 is supported by the load-bearing pile 22 cured to the lower portion, and the load-bearing pile 22 temporarily supports the load so that the permanent foundation 40 is supported. Must be installed.

Such a construction method is a construction method of a conventional structure, the load-bearing pile 22 for supporting the load is made of concrete only and can not be used as a permanent foundation, the permanent foundation 40 must be installed separately Therefore, there is a problem that the air becomes long. In addition, since the excavation of the thumb pile hole 21 in order to insert the thumb pile 20, and then the thumb pile 20 should be installed exactly in the position where you want to install the air (工期) becomes longer, thumb pile ( There is a problem that it is difficult to maintain the verticality of 20). In addition, there is a problem in that it takes a lot of installation cost and time because the concrete must be poured, there is an environmental problem because the concrete is used.

The present invention was devised to solve the above problems, and is environmentally friendly due to the low amount of concrete used, which can shorten the air, and provides a method for constructing a structure using a pile with an excavation wing. have.

Still another object of the present invention is to provide a method for constructing a structure using a pile with excavation wings, which can effectively excavate the ground, improve the resistance to vertical force, and ensure structural stability.

In order to achieve the above object, the construction method of the structure using the pile with the excavation wing of the present invention, the step of constructing the external earth wall wall along the boundary line of the structure to be constructed; And rotationally inserting the pile with the excavation wings, which are the foundation of the structure, into the wall at a predetermined position. The pile is supported by the excavation wings attached to the pile, and the pile with the excavation wings is It is used as a temporary foundation that supports only the load during construction and is used as a permanent foundation for supporting the load of the structure after completion of the structure.

At this time, the pile is penetrated in the longitudinal direction, the inside is empty, and it is preferable to additionally fill the interior of the pile to be used as a concrete fill tube (CFT) column.

In addition, it is possible to construct the basement and ground floor at the same time using hollow steel pipe or concrete filled steel pipe column.

On the other hand, it is preferable to include the step of installing the floor beam to the pile and excavate the ground (掘 土).

In addition, further comprising the step of installing a water-resistant plate to prevent the penetration of groundwater, such as the bottom of the bottom layer of the excavated basement.

On the other hand, the excavation wings are installed to protrude laterally around the lower side of the pile, it is preferable that the front end and the end is formed to be inclined to shift each other.

The reinforcing blade is installed to protrude laterally on the inner surface of the lower portion of the pile, the reinforcing blade is more preferably facing each other with the excavation blade and the pile in between.

Preferably, the excavation blade is installed at the lower end of the pile so that the lower surface of the pile is sealed, a predetermined portion is cut in an oblique direction with respect to the rotation direction so that the incision is inclined at a predetermined angle.

It is preferable that the pile is made of a spiral bent in the same manner as the spiral so that the lower end of the spiral, the excavation wings are welded and installed to the lower end of the pile.

The construction method of the structure using the pile with the excavation wing according to the present invention has the following effects.

First, it is possible to construct the pile in the correct position, and the bearing capacity is increased by the excavation wing attached to the lower portion of the pile to ensure structural stability.

Secondly, by using the excavation wing as a permanent foundation, it is possible to shorten the air because the conventional process for inserting the thumb pile and the process of refilling the perforations and the concrete placing process for supporting the load are omitted.

Third, if the excavation wing is used as a foundation, the pile is used as the pillar of the finished structure, and the pile is constructed and the pile is connected and piled up while connecting the pile and the pile, the basement structure can be used for both hypothesis and permanent use. Economics and stability can be secured.

Fourth, it is easy to maintain the verticality of the file.

Fifth, cost can be reduced by simplifying the process.

Sixth, workability is improved.

Seventh, it is possible to reduce the cross-section of the pile by using the concrete filled steel pipe (CFT) pile by filling concrete inside the pile, as well as the basement and ground layers can be constructed at the same time.

Seventh, it is eco-friendly by minimizing the use of concrete in the basement.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Prior to this, terms or words used in the specification and claims should not be construed as having a conventional or dictionary meaning, and the inventors should properly explain the concept of terms in order to best explain their own invention. Based on the principle that can be defined, it should be interpreted as meaning and concept corresponding to the technical idea of the present invention. Therefore, the embodiments described in the specification and the drawings shown in the drawings are only the most preferred embodiment of the present invention and do not represent all of the technical idea of the present invention, which can be replaced at the time of the present application It should be understood that there may be various equivalents and variations.

4 is a process flowchart showing a method of constructing a structure according to a preferred embodiment of the present invention.

In the method for constructing a structure according to the present invention, a step of constructing an external soil wall (S110), a step of rotationally inserting a pile with an excavation wing (S120), a step of installing a bottom beam (S130), and a step of pitting (S140) ), And repeating the step of installing the floor covering to pit (S150), and the step of installing a water-resistant plate on the lowest floor of the basement layer (S160). That is, compared with the prior art, the construction step can be reduced, and the air can be shortened.

Hereinafter, a detailed work process will be described at each step with reference to FIGS. 5A to 5D.

First, as shown in FIG. 5A, an external earth wall 110 is constructed (S10). The outer retaining wall 110 is installed along the boundary line on which the structure is built. At this time, the retaining wall 110 may be made by a cast in place file (CIP) method of pouring the retaining wall with concrete at the construction site. CIP method is to cast reinforced concrete piles on site by casting heat, install vertical casing with perforator (ogre device), install reinforcing bars inside the casing, insert H pile into the casing at predetermined intervals, and then It is a method of filling the solidified into a pile (see Fig. 6).

Although shown and expressed as constructing the earth wall 110 of the present invention using the CIP method, but is not limited to this, earth wall, formed by installing the H-file and the earth plate, the H-file and the soil cement wall is installed Retaining wall formed by installing concrete, reinforcing steel reinforcing bars, and earthen wall formed by installing pile piles, or building a temporary sheet pile made of sheet piles, or walls made of barbed wire and concrete used as permanent walls. Various earthen walls such as diaphram wall can be constructed.

Subsequently, as shown in FIG. 5B, when the retaining wall 110 is constructed, the pile 120 having the excavation wings 122 attached to the inside of the wall 110 to form the foundation and the pillar is attached thereto. Rotate in (S120). At this time, the pile 120 to which the excavation wing 122 is attached is rotated in to a predetermined depth according to the design depth.

The pile 120 to which the excavation wing 122 is attached is cylindrical, and a through hole 121 is formed in the longitudinal direction thereof. More specifically, as shown in FIGS. 7 and 8, the pile 120 is cylindrical in shape. Of course, the shape of the pile 120 is not limited thereto, and may be appropriately modified by those skilled in the art. For example, the pile can be formed in a square. Meanwhile, in the present specification, the steel pipe file means a circular file and a square file together.

The excavation blade 122 is installed to protrude laterally around the pile, and is formed to be inclined so that both ends thereof are shifted from each other. The drilling wing 122 is formed in the lower side of the pile 120.

In order to install the pile 120 on the ground, the pile 120 is easily inserted into the ground because the excavation blade 122 is installed to be inclined at a predetermined angle to rotate the pile 120 while applying a load from the top. In addition, the pile 120 installed on the ground is strengthened the resistance to the vertical force due to the excavation wing (122). Therefore, the tip support area of the lower portion of the pile 120 is expanded to ensure the stability of the rotationally inserted pile structure.

As described above, the excavation wing 122 is used as a permanent foundation for supporting the load of the structure. Therefore, the step (S120) of rotating the pile 120 is attached to the excavation wing 122 of the present invention is the thumb pile hole 21 for inserting the thumb pile 20 in the conventional structure construction method Excavating (S20) step, inserting the thumb pile 20 (S30) step, constructing the load support pile 22 for temporary load support in the excavated thumb pile hole 21 (S40) step and thumb Since it substantially corresponds to the step (S50) of filling the pile holes 21, the air can be shortened. In addition, it is easy to maintain the verticality of the pile 120 by installing the pile 120 through the rotational retraction, it is environmentally friendly by supporting the load of the structure without using a concrete pile (see '22' of Figure 2b) Construction cost can be reduced.

On the other hand, the reinforcing blade 123 may be further installed on the inner surface of the lower portion of the pile 120 (see FIG. 8). Lateral pressure increases as the depth of rotationally drawing the pile 120 into the ground increases. In this case, the reinforcing blade 123 serves to prevent the file 120 from being broken or bent. That is, the reinforcing blade 123 serves to increase the resistance of the pile 120 against the lateral pressure of the ground. In addition, by providing the reinforcement wing 123 in the pile 120, the support area for the vertical force acting perpendicular to the pile 120 is widened, thereby further increasing the load bearing force.

Preferably, the drilling wing 122 and the reinforcement wing 123 face each other with a pile in between. That is, the height of the reinforcement wing 123 installed in the pile 120 is equal to the height of the excavation wing 122 installed in the pile 120. Since the reinforcement wing 123 and the excavation wing 122 are installed at the same height as each other, the resistance to the acupressure in the horizontal direction of the pile 120 is further increased.

In addition, the reinforcing blade 123 is preferably opened inside to increase the excavation effect. When the pile 120 is installed on the ground, the soil is inserted into the ground through the open center of the reinforcement wing 123 and is inserted while pushing out the soil of the surrounding ground. In this way, the soil of the ground enters the open center of the pile 120, the effective excavation is possible.

Preferably, the excavation propulsion bit 124 is installed on the lower surface of the reinforcing blade 123. Excavation and propulsion bit 124 is installed on the lower surface of the reinforcing blade 123 to facilitate the excavation. Of course, the excavation propulsion bit 124 may be installed on the lower surface of the excavation wing 122 or the lower end of the pile 120 as well as the reinforcement wing 123. Excavation and propulsion bit 124 is shown as a pair, but is not limited to this.

On the other hand, although not shown, at least two drilling wings 122 may be installed at a predetermined interval from the bottom up. Such, the excavation wings are preferably made to increase in size from bottom to top.

As such, the plurality of excavation wings 122 are installed on the pile 120, so that effective drilling is possible, and when the installation of the pile is completed, the resistance to the vertical force may be further increased. In addition, the pile 120 is excavated by the rotation of the excavation wing 122 can solve the noise and vibration problems that may occur when the pile 120 is installed on the ground.

The pile 120 as described above is coupled to the upper steel pipe pile 120 'by welding (W). 9 illustrates a state in which the steel pipe pile 120 'is welded to the upper portion of the pile 120 to be rotated in the ground. That is, only the pile 120 can be rotated in and used on the ground, but as shown in FIG. 9, when the pile is installed to a position deeper than its length according to the design depth, a steel pipe is placed on the top of the pile 120. The pile 120 'may be welded (W) for construction. In this case, the pile 120 and the steel pipe pile 120 'is shown and described as being welded, but is not limited to this, plate-shaped so that the steel pipe pile 120' and bolted to the upper portion of the pile 120 It can be connected by providing a connecting member and the like.

On the other hand, as another embodiment of the pile with the excavation wing, referring to Figures 10 and 11, the excavation wing 222 is installed to seal the lower end of the pile 220 and protrude laterally. Excavation blade 222 is a predetermined portion is cut in an oblique direction with respect to the rotation direction, the incision is formed to be inclined at a predetermined angle. As the excavation wing 222 seals the lower surface of the pile, resistance to vertical force is further enhanced.

In addition, as another embodiment of the pile with the excavation wing, referring to Figures 12 and 13, the lower end of the pile 320 is formed in a spiral. That is, the other end 320b is formed higher than the one end 320a and thus the ground is easily excavated. At this time, the excavation wing 322 bent to be the same as the lower end of the pile 320 is attached to facilitate the excavation. That is, the tip 322a at which the excavation wing 322 starts is formed lower than the rear end 322b at which the excavation wing 322 ends, and between the tip 322a and the rear end 322b, the same spiral as the helix at the bottom of the pile is formed. Form.

As described above, the piles 120, 220, and 320 to which the excavation wings 122, 222, and 322 are attached may be used as an example, or may be used in combination.

Next, when the pile 120 is rotated in, as shown in Figure 5c, install the floor beam 130 to be used as the floor beam of the finished structure (S130), and excavates the ground (S140). The floor beam 130 is made of a strut or a horizontal beam. The floor beam 130 is installed to connect the pile 120 or is installed to connect the pile 120 and the external earth wall 110 to prevent the ground from collapse by transverse earth pressure. As described above, the installation and excavation of the floor beam 130 is the same as the above-described steps (S60) and (S70), and thus the detailed description thereof will be omitted.

Subsequently, the steps (S130) and (S140) are repeated to the lowest floor to be pitted by design in order to build an underground layer of the area where the structure is built (S150).

Lastly, as shown in FIG. 5d, when the gulting is completed, the inner plate 140 is installed at the lowermost layer (S160). The inner plate 140 is installed to prevent the penetration of groundwater and the like from the bottom of the bottom layer. At this time, as described above, since the excavation blade 122 of the pile 120 is used as a permanent foundation, a process of installing a permanent foundation on the bottom of the lowermost layer may not be separately performed. Of course, it is also possible to install a permanent foundation separately to further improve the load bearing capacity.

On the other hand, in the present specification is shown and described as building the basement layer using the pile (120, 220, 320) attached to the excavation wings, the ground layer and the basement layer at the same time by increasing the load bearing capacity of the pile with the excavation wings You can also build. That is, it can be constructed by the reverse construction method.

In order to increase the holding force of the piles 120, 220 and 320, the pile is filled with concrete and cured. That is, the pile 120, 220, 320 may be used as a concrete fill tube (CFT) column filled with concrete therein. Therefore, since the bearing capacity of the pile is improved, it is possible to simultaneously build the ground floor and the ground floor while supporting the upper load.

As described above, although the present invention has been described by way of limited embodiments and drawings, the present invention is not limited thereto and is intended by those skilled in the art to which the present invention pertains. Of course, various modifications and variations are possible within the scope of equivalents of the claims to be described.

1 is a process flowchart showing a method for constructing a conventional structure.

Figures 2a to 2g is a view showing a state constructed in accordance with the conventional construction method of the structure.

Figure 3 is a plan view schematically showing a state constructed in accordance with the conventional construction method of the structure.

4 is a process flow diagram illustrating a method for constructing a structure according to a preferred embodiment of the present invention.

5a to 5d is a view showing a state constructed in accordance with the construction method of the structure according to an embodiment of the present invention.

Figure 6 is a plan view schematically showing a state constructed in accordance with the construction method of the structure according to an embodiment of the present invention.

Figure 7 is a perspective view showing a pile attached with excavation wings used in the construction method of the structure according to a preferred embodiment of the present invention.

8 is a cross-sectional view taken along the line VII-VII 'of FIG.

FIG. 9 is a view showing a state in which the pile with the excavation wing of FIG. 7 is rotatably inserted into the ground; FIG.

10 is a view showing a file attached with other drilling wings used in the method for constructing a structure according to an embodiment of the present invention.

11 is a perspective view showing the excavation wing of the pile of FIG.

12 is a view showing a file with another drilling wing attached to the method for constructing a structure according to a preferred embodiment of the present invention.

Figure 13 is an exploded perspective view of the pile attached to the excavation wing of Figure 12.

<Description of the symbols for the main parts of the drawings>

110: outside wall

120, 220, 320: file

122, 222, 322: Excavating Wings

130: floorcloth

140: inner plate

Claims (9)

(a) constructing an outer cladding wall along a boundary line of the structure to be constructed; And and (b) rotatingly inserting the pile with the excavating wings, which are the foundation of the structure, into the wall at a predetermined position. The pile is supported by the excavation wing attached to the pile, the pile with the excavation wing is used as a temporary foundation to support the load during construction and used as a permanent foundation to support the load of the structure after completion of the structure, After the step (b), the pile is used as a pillar of the structure after the structure is completed, as the ground inside the outer wall is excavated, A method of constructing a structure using piles with excavation wings, characterized in that the installation of a water-resistant plate to prevent the infiltration of groundwater at the bottom of the bottom layer of the excavated basement. The method of claim 1, Pile is penetrated in the longitudinal direction and filled with concrete inside the hollow steel pipe or pile, and used as a concrete fill tube (CFT) pillar construction method of the structure using a pile with a drill wing . The method of claim 2, Construction method of a structure using a pile with excavation wings, characterized in that the construction of the basement and ground floor at the same time using a hollow steel pipe or concrete filled steel pipe pillar. The method according to any one of claims 1 to 3, Construction method of a structure using a pile with a drilling wing, characterized in that it comprises the step of installing the floor beam to the pile and excavate the ground (토). delete The method of claim 4, wherein Excavation wings are installed so as to protrude laterally around the lower side of the pile, the construction method of the structure using a pile with excavation wings, characterized in that the tip and the end is formed to be inclined to shift each other. The method of claim 6, Reinforcement wing is installed to protrude laterally on the inner surface of the lower portion of the pile, the reinforcement wing is a construction method of a structure using a pile with an excavation wing, characterized in that facing each other with the excavation wing and the file between. The method of claim 4, wherein The excavation blade is installed at the bottom of the pile so that the lower surface of the pile is sealed, the predetermined portion is cut in an oblique direction with respect to the rotation direction, the structure using the pile with the excavating wings, characterized in that the incision is inclined at a predetermined angle. How to build. The method of claim 4, wherein The pile is made of a spiral of the lower end, the method of construction of a structure using a pile with an excavated wing, characterized in that made of a spiral bent in the same way as the spiral so that the drilling wing is welded to the lower end of the pile.

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