KR101257905B1 - Method for constructing foundation work - Google Patents

Abstract

PURPOSE: A foundation construction method using a bored pile is provided to reduce the construction period and costs by performing only excavation work for installing the bored pile. CONSTITUTION: A foundation construction method using a bored pile(100) comprises a step of installing an earth retaining wall(210) in the ground; a step of forming a plurality of excavation holes in a site in which a main column(250) is arranged using an excavating device; a step of embedding the bored pile in the excavation holes and of grouting through the bored pile; a step of performing initial ground excavating work; a step of performing arrange work of a first floor frame including a girder(240); a step of performing additional excavating work and the arrange work of an underground frame until excavation work reaches a basic level(L); a step of installing the main column between the bored piles; and a step of cutting and removing an upper part of the bored pile.

Description

Foundation method using embedded pile {METHOD FOR CONSTRUCTING FOUNDATION WORK}

The present invention is a method for constructing a basement structure of a building, and more specifically, in the construction of an underground structure, the construction of the top-down method (reverse construction method) for forming a structure while constructing the structure from the upper floor to the lower floor. It is a basic construction method using piles, and it is necessary to install the pile before installing the main pillar, use it as a temporary pillar, and finally install the main pillar after the construction is completed to improve the construction efficiency, economy and safety. It is about.

In general, when the basement structure of a building is classified, it is classified into a forward and a reverse method according to the direction in which the underground structure is constructed.

In particular, the reverse stroke method is also called a top-down method, which is a method that can simultaneously complete the ground floor and the underground floor as the ground height of the building increases and the underground structures necessary for this deepen. This top-down method is to install underground outer walls and pillars before underground trenches, and then construct underground structures in parallel with floor trenches, so that the top-down method can be used from top to bottom without struts or earth anchors. Corresponds to the construction method to complete the basement in the opposite direction.

When applying the above-mentioned top-down method, since the basement and ground floor construction can be carried out at the same time, the effect of shortening the construction period is large, and the construction vehicle or equipment can be directly used on the ground floor to be used as a work space. In addition, the construction has a merit of being able to be constructed smoothly even in a narrow site. In addition, in the case of the top-down method as described above, excavation and concrete construction are repeated from the upper floor to the lower floor while using the main structure of the building as a support for transverse earth pressure. There is a low concern about the occurrence of civil complaints due to the settlement of the bar, the top-down method as described above is due to the various advantages described above, the utilization is gradually increasing in recent years.

On the other hand, according to the top-down method as described above, after installing the pillar member in the ground without the underground trench, and pre-installed the underground pillar, after completing the ground structure of the first floor, according to the way to excavate the lower ground The construction is made, where the pillar member is installed as described above according to the conventional top-down method was generally used steel frame member.

However, in general, the pillars installed in the basement floor must have a fairly large cross section and scale because they support both the total weight of the building structure including the ground structure and the working load after completion. Therefore, in the top-down method, in order to install a large-scale pillar member as described above, a large diameter insertion hole must be drilled, and such a large diameter ground drilling method is available such as a reverse circulation drill (RCD) method or a percussion rotary drill (PRD). ) Method is used.

However, in the case of the RCD or PRD method as described above, since the construction speed is very slow, not only the construction efficiency is lowered, but also the overall construction cost is increased due to the high work cost, which acts as a factor that lowers the overall economic efficiency of the top-down method.

In addition, in general, the top-down method is often applied to the soft ground of poor ground condition, the column member installed in the soft ground in this way, if the base is not enough support capacity only in the basement base to a certain depth below the foundation level to secure the support capacity By invading the above, it is possible to serve as a support pile for the soft ground. However, in the case of steel 'H' shape which is generally used as a pillar member in the existing top-down method, it may be a problem that it is difficult to secure an omnidirectional bearing force in the cross-sectional shape.

Patent Publication 10-2007-0108741

The present invention has been made to solve the above problems, as a basic method using the embedded pile in the top-down method, first install the temporary column using a small diameter buried pile having a circular cross section and then the basement construction is completed After installing the column, by removing the remaining portion except for a portion of the purchase pile, the purpose is to provide a basic construction method using the purchase pile that can significantly reduce the construction period and construction cost.

In order to achieve the above object, the foundation method using the embedded pile according to the present invention comprises the steps of: constructing a wall of mud; Forming a plurality of excavation holes using an excavation device at a portion where the main pillar is disposed; Embedding the embedded pile in the excavation hole and grouting through the embedded pile; Performing an initial excavation work; Performing a ground-floor framing arrangement including a girder; Performing additional digging and basement frame placement work down to the foundation level; Installing a main pillar between the plurality of embedded piles; And cutting and removing an upper end of the embedded pile extending above the foundation level.

Preferably, in the foundation method using the embedded pile according to an embodiment of the present invention, the main pillar is disposed between the plurality of embedded piles.

Preferably, the foundation method using the embedded pile according to an embodiment of the present invention is provided with a bracket fixed to the embedded pile for each basement height, the basement frame is supported by the bracket.

Preferably, the buried pile used in the foundation method using the buried pile according to an embodiment of the present invention, the grouting liquid hole is formed through the inner and outer peripheral surface of the lower end so that the grouting liquid passes through the hollow of the bottom file; And a front end reinforcing plate having a seating portion on which the lower end of the pile is seated, and an extension part extending upward from an edge of the seating portion, wherein the extension portion is inclined to be spaced apart from the center of the seating portion toward the upper side.

Preferably, the embedding pile used in the foundation method using the embedded pile according to an embodiment of the present invention further includes an excavation reinforcement plate protruding downward from the bottom of the seating portion.

Preferably, the embedding pile used in the foundation method using the embedded pile according to an embodiment of the present invention, the first through-hole the front end reinforcing plate is formed over the periphery of the extension, and the second through-hole formed in the seating portion At least one of the balls.

According to the foundation method using the embedded pile according to the present invention, before receiving the full design load of the main pillar at the construction stage of the structure, temporary pillars for temporary construction for the construction of underground floor structures such as girders and slabs After use, the pillar can be installed as a permanent structure after the underground structure is completed.

Accordingly, when excavating the ground for the first time and installing the temporary pillars, only excavation for the installation of the embedded pile, which is a relatively small diameter temporary pillar, is required, so that construction for the formation of the excavation hole for the installation of the main pillar in the ground is omitted. Only a relatively low cost of equipment can be used to reduce construction period and construction costs. For example, since it does not require the use of a reverse circulation drill (RCD) method or a percussion rotary drill (PRD) method for drilling a large diameter ground, it can be constructed using small equipment such as general double rod auger (DRA) equipment. Reduction of construction period and construction cost can be achieved.

In addition, since the use of the embedded pile as the temporary pillar, the construction can be carried out more simply because it is not necessary to install a separate temporary pillar in addition to the embedded pile. In addition, since the purchase pile is removed at the completion stage of construction, unlike the main column, only one may be installed as needed, so that any number of temporary columns may be provided depending on the situation regardless of the number of the main pillar. Can be. In other words, any number of embedded piles may be installed as temporary columns depending on various factors such as the condition of the ground, the basement level, and the height of the upper floor. For example, depending on the condition of the ground, it is possible to install only a small number of embedded piles in the case of solid ground, or in the case of soft ground, a plurality of embedded piles may be installed. Therefore, flexible construction operation is possible by adjusting the number of temporary columns according to the situation, and reliable and cost-saving foundation construction can be carried out.

In addition, the buried pile used as a temporary pillar as described above is composed of a grouting steel pipe pile, not a simple concrete pile, unlike the general concrete pillars are formed by forming only grouting without the need for a separate reinforcement such as reinforcement It is easy and the reliability can be further improved. In addition, the embedded pile has a circular cross-section can easily secure the omni-directional support force, and the lower end portion includes a tip reinforcement plate, excavation reinforcement plate, and positioning pieces in the lower end of the embedded pile and the temporary column using the same Installation can be easier. In addition, since the tip reinforcing plate provided on the lower end of the embedded pile is provided at the base of the embedded pile, the installation and support of the temporary pillar can be made more reliable.

In addition, as the bracket fixed to the embedding pile is provided, it is possible to prevent the buckling of the embedding pile and assist in placing the frame such as the girder and the main pillar to further improve the reliability and stability of the construction.

1 is a view showing a buried pile used in the foundation method using the buried pile of the present invention.
Figure 2 is a view showing the embedded pile used in the foundation method using the embedded pile of the present invention.
3 is a view showing the embedded pile used in the foundation method using the embedded pile of the present invention.
Figure 4 is a view showing the embedded pile used in the foundation method using the embedded pile of the present invention.
5 is a view showing a basic construction method using the embedded pile according to the present invention.
6 is a view showing a basic construction method using the embedded pile according to the present invention.
7 is a view showing a basic construction method using the embedded pile according to the present invention.
8 is a view showing a basic construction method using the embedded pile according to the present invention.
9 is a view showing the basic construction method using the embedded pile according to the present invention.
10 is a view showing a basic construction method using the embedded pile according to the present invention.
11 is a view showing a bracket used in the foundation method using the embedded pile according to the present invention.
12 is a view showing a bracket used in the foundation method using the embedded pile according to the present invention.
13 is a view showing a basic construction method using the embedded pile according to the present invention.
14 is a view showing a basic construction method using the embedded pile according to the present invention.
15 is a view showing a basic construction method using the embedded pile according to the present invention.

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

The spatially relative terms " below ", " beneath ", " lower ", " above ", " upper " It can be used to easily describe the correlation of a member or component with other elements or components. Spatially relative terms should be understood to include, in addition to the orientation shown in the drawings, terms that include different orientations of members during use or operation. For example, the direction shown in the figures can be interpreted as "upward" and "downward" according to a reference. Thus, the exemplary terms "up" and " up & down " The member can also be oriented in other directions, so that spatially relative terms can be interpreted according to the orientation.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. In the present specification, the singular form includes plural forms unless otherwise specified in the specification. &Quot; comprises, "and / or" comprising ", as used herein, unless the recited element, step, operation and / Or additions.

Unless otherwise defined, all terms (including technical and scientific terms) used in the present specification may be used in a sense that can be commonly understood by those skilled in the art. Also, commonly used predefined terms are not ideally or excessively interpreted unless explicitly defined otherwise.

In the drawings, the thickness or size of each member is exaggerated, omitted, or schematically illustrated for convenience and clarity of description. Also, the size and area of each component do not entirely reflect actual size or area.

In addition, the angle and direction mentioned in the process of demonstrating the structure of this invention in the Example are based on what was described in drawing. In the description of the structure constituting the present invention in the specification, reference points and positional relationship with respect to angles are not explicitly referred to, reference is made to the relevant drawings.

1 to 4 is a view showing the embedded pile 100 used in the foundation method using the embedded pile according to the present invention.

1 to 4, the embedded pile 100 used in the foundation method using the embedded pile according to the present invention, the embedded pile used in the embedded pile method, penetrating through the inner and outer peripheral surface of the lower end to allow the grouting liquid to pass through Grouting liquid hole 11 is formed and the bottom of the hollow pile (10), the lower end of the pile 10 is seated portion 21 and extending from the edge of the seating portion 21 A tip reinforcing plate 20 having an extension portion 22 is included.

The pile 10 is formed in a cylindrical shape having a hollow 12, and the upper end is open and the lower end is open. The grouting liquid hole 11 formed through the inner and outer peripheral surfaces is formed at the lower end of the pile 10.

The grouting liquid hole 11 is provided to discharge the grouting liquid from the lower end portion to the excavation hole side when the grouting liquid is injected and grouted through the hollow 12 of the pile 10.

The tip reinforcing plate 20 is made of a material having the same rigidity as the steel, to increase the stiffness of the lower end of the pile 10 to improve the penetration when the pile 10 is inserted into the excavation hole, and grouting, grouting In order to facilitate grouting, to perform good grouting, and to improve the bearing capacity of the grouted pile 10.

As shown in FIG. 1, the tip reinforcing plate 20 according to the exemplary embodiment of the present invention extends upwardly from the seating portion 21 on which the lower end of the pile 10 is seated, and the seating portion 21. And an extension 22.

In the present embodiment, the plurality of first through holes 23 are formed in the extension part 22 along the circumferential direction thereof. The first through hole 23 allows the grouting liquid to be evenly distributed toward the inner circumferential surface of the excavation hole when the grouting liquid injected through the hollow 12 of the pile 10 flows out from the lower end of the pile 10. Increase the injection pressure of the liquid to improve the diffusion speed of the grouting liquid. Meanwhile, the front reinforcement plate 20 according to FIG. 2 may have a second through hole 24 formed in the seating part 21. The grouting liquid diffused to the bottom of the pile 10 is also filled between the bottom of the pile 10 exposed by the second through hole 24 and the bottom of the drilling hole to improve the bearing force of the pile 10.

As shown in FIGS. 1 and 2, the extension part 22 is spaced apart from the outer peripheral surface of the lower end of the pile 10. Accordingly, the grouting liquid is also filled between the inner circumferential surface of the extension portion 22 and the lower circumferential surface of the lower portion of the pile 10 to increase the rigidity of the pile 10.

In addition, the extension portion 22 is formed to be inclined away from the center of the seating portion 21 toward the upper side. As the extension part 22 is formed to be inclined closer to the inner circumferential surface of the excavation hole toward the upper side, grouting prevents dirt particles, etc. located at the bottom of the excavation hole from being moved to the upper side of the excavation hole by the grouting liquid. It prevents the incorporation of unnecessary soil particles and enables high quality grouting.

On the other hand, the embedded pile 100 according to the present invention may further include an excavation reinforcement plate (30). The excavation reinforcing plate 30 is provided to improve the penetration of the pile 10, the protrusion 10 is formed to protrude downward from the bottom of the seating portion (21).

On the other hand, the excavation reinforcing plate 30 is not limited to the bar shown in Figures 3 and 4, it may be formed to be inclined sharply toward the lower side or have an arbitrary shape, improve the penetration of the pile 10 It may be configured to specifically be composed of a first reinforcing plate 32, and a second reinforcing plate (34).

The first reinforcement plate 32 is coupled to cross the center of the seating portion 21, and the second reinforcement plate 34 is also the center of the seating portion 21, similarly to the first reinforcement plate 32. Are combined to cross. The first reinforcement plate 32 and the second reinforcement plate 34 intersect at the center of the seating portion 21. FIG. 4 illustrates a bottom of the excavation reinforcement plate 30 in a state in which the second through hole 24 is formed at the center of the seating portion 21. Of course, it is also possible to combine the excavation reinforcement plate 30 in a state in which the second through hole 24 is not formed in the seating part 21.

The positioning piece 40 may be provided to easily seat the lower end of the pile 10 on the seating portion 21 of the tip reinforcing plate 20. The positioning pieces 40 are spaced apart and coupled along the circumference of the inner circumferential surface of the extension portion 22 of the tip reinforcing plate 20 so that the lower end portion of the pile 10 is fixed. In the present embodiment, four positioning pieces 40 are arranged at regular intervals along the circumferential direction of the extension part 22. Of course, the number and separation distance can be variously changed.

The pile 10 positioned between the positioning pieces 40 is inserted into the excavation hole so that the pile 10 is spaced apart from the inner circumferential surface of the excavation hole by a predetermined distance. Then, when grouting, the grouting liquid is the outer circumferential surface of the pile 10. And quantitatively filled in the inner circumferential surface of the excavation hole to enable high quality grouting.

Hereinafter, with reference to the drawings with respect to the foundation method using the embedded pile using the embedded pile according to the above configuration will be described in detail.

5 to 13 is a view showing the basic construction method using the embedded pile according to the present invention, Figure 11 and Figure 12 is a view showing the bracket used in the basic method using the embedded pile according to the present invention.

First, referring to Figure 5, the earthwork construction proceeds to the ground. The clogging construction is performed by installing a structure such as a predetermined barrier wall 210 on the outer boundary side of the basement layer to prevent the surrounding soil from collapsing during the underground trench. Such a clogging construction can be carried out by selecting a suitable construction method according to the site situation from the general temporary clogging construction method using members such as CIP, SCW, slurry wall, earth plate.

Next, the ground is excavated to form an excavation hole for installing the embedded pile 100 in accordance with FIG. At this time, the formation of the excavation hole may be made using a predetermined excavation device 220 such as an auger. In this case, the formation of the excavation hole may be plural as shown in FIG. 6, but is not limited thereto.

Next, as shown in Figure 7, install the pile 100 in the excavation hole and proceeds the grouting process.

After excavation through an excavation device 220 such as an auger, the excavation device 220 is removed from the excavation hole, and then the insertion pile 100 is inserted, and the lower end of the embedment pile 100 is in close contact with the bottom surface of the excavation hole. Using the putter can be swung the upper end of the embedded pile 100.

In this case, the embedded pile 100 may use the embedded pile 100 provided with the tip reinforcing plate 20 at the lower end of the pile 10 as described above. Penetration of the pile 10 is increased by the tip reinforcing plate 20 coupled to the lower end of the pile 10, and the soil particles inside the excavation hole are extended by the extension part 22 of the tip reinforcing plate 20. Excessive mixing into the upper side of the extension part 22 is prevented.

Then, the grouting liquid is injected through the hollow 12 of the pile 10. The grouting liquid flows out of the pile 10 through the grouting liquid hole 11 formed at the lower end while being filled in the hollow 12 of the pile 10. Through this process, the grouting liquid is filled while rising from the bottom of the drilling hole to the top.

At this time, the grouting liquid is evenly distributed to the inner peripheral surface side of the excavation hole through the first through hole 23 of the extension portion 22. Therefore, the grouting liquid is also filled below the inclined surface of the extension part 22.

Subsequently, as shown in FIG. 8, an initial destruction process is performed. At this time, the initial excavation work can be excavated to the depth enough to install a framework such as ground floor steel frame girders and slab structures without deep excavation more than necessary.

Subsequently, as shown in FIG. 9, a ground-floor framework construction is performed.

Frame construction is performed by installing members such as girder 240 between the retaining wall 210 and the embedded pile 100 and between the embedded pile 100 and the embedded pile 100. Here, the girder 240 serves as a strut supporting the earth pressure applied from the earth wall 210 during the construction of the basement layer, and is applied from the top as a permanent structure without being dismantled after completion of the underground construction. It can support the vertical load and transfer it to the column.

Meanwhile, as shown in FIG. 9, a predetermined bracket 230 is provided to prevent buckling between the plurality of embedded piles 100, to support the girder 240, and to assist the frame installation such as the girder 240 and the main pillar. ) Can be installed.

On the other hand, as shown in Figure 10, after the ground-floor frame construction is completed, the bracket 230 may be lowered to the height of the basement 1 floor to support the girder (not shown) forming the basement 1 floor frame.

For example, as shown in FIGS. 11 and 12, the bracket 230 may be firmly fixed to the embedded pile 100, and the girder 240 may be disposed on the bracket. At this time, the bracket 230 may be arranged for each height of each basement floor, the height of the girder 240 of each floor may be determined by adjusting the installation height of the bracket 230, a plurality of basement construction is in progress Therefore, a plurality of brackets 230 forming several layers may be installed in one embedment pile 100.

That is, the girder 240 of each layer may be supported and connected by the bracket 230, and the main pillar 250 to be described later is disposed between the embedded pile 100 and the embedded pile 100 or the As the main pillar 250 is disposed around the embedded pile 100, the bracket 230 may assist in placing the frame.

In addition, the bracket 230 is fixed to the embedded pile 100 and the support pile 100 to prevent the buckling of the embedded pile 100 to support to maintain a predetermined distance from each other. Accordingly, the bracket 230 may have a function of assisting buckling prevention and framing.

Next, as shown in FIG. 13 and FIG. 14, the frame arrangement work such as additional trenches and basement girder 240 up to the foundation level L is completed. At this time, frame construction of each floor is completed, the main column 250 may be disposed between the plurality of embedded pile 100. Main pillar 250 is for example to reinforce the column reinforcement (P) to the portion adjacent to the buried pile 100 as shown in Figure 13, and then to the reinforced reinforcement (P) as shown in Figure 14 It can be formed by pouring, but is not limited thereto. On the other hand, as described above, the bracket 230 is installed between the embedded pile 100, the bracket 230 may assist in placing the frame such as the girder 240 and the main column 250.

Preferably, as shown in FIGS. 13 and 14, the main pillar 250 may be disposed between the embedded pile 100, and thus, construction safety and reliability may be further improved during the main pillar installation construction process. .

At this time, the embedding pile 100 is embedded deeper than the foundation level (L), so that the burrow to the bottom of the bottom floor, and even when the main pillar 250 is not yet placed, the embedding pile 100 is a temporary pillar to build the basement frame. Support and maintain. Meanwhile, a foundation pile cap 260 formed of plain concrete before slab arrangement may be provided.

Subsequently, as shown in FIG. 15, the upper end portion extending upward from the foundation level L of the embedded pile 100 embedded below the foundation level L is cut and removed, and the finishing work is performed.

In this case, the embedded pile 100 is embedded deeper than the foundation level (L), which is the bottom floor, so that the lower end portion of the embedded pile 100 may be maintained even when the embedded pile 100 is cut on the foundation level. . That is, the embedding pile 100 may be removed by cutting the upper portion of the portion buried below the foundation level (L).

In the existing top-down method, the main pillar 250 is installed before the underground structure is formed, whereas in the present invention, the main pillar 250 is once embedded in the small diameter before receiving the total design load in the construction stage of the structure. After installing the girder 240, used as a temporary pillar for the construction of a basement floor structure, such as slabs, and then the base structure 250 is installed as a permanent structure as described above after the underground structure is completed.

Accordingly, when excavating the ground for the first time and install the temporary pillar, only excavation for the installation of the embedded pile 100, which is a relatively small diameter temporary pillar, is necessary, thus forming the excavation hole for installing the main pillar 250 in the ground. In addition, the construction time for the construction is reduced, and the use of relatively small, low-cost equipment can reduce construction period and construction costs. For example, the installation of the main column 250 does not require the use of a reverse circulation drill (RCD) method or a percussion rotary drill (PRD) method for drilling a large diameter ground, and a small equipment such as a general double rod auger (DRA) device. Since construction can be carried out using the construction, the reduction of the disclosure period and the construction cost can be achieved.

In addition, since the use of the embedded pile 100 as the temporary pillar, the construction can be carried out more simply because it is not necessary to install a separate temporary pillar in addition to the embedded pile 100. In addition, since the purchase pile 100 is removed at the completion stage of construction, unlike the main column 250, since only one can be installed as needed, depending on the situation, any number depending on the situation regardless of the number of pillars The hypothesis pillar can be provided. That is, any number of embedded piles 100 may be installed as temporary columns according to various factors such as ground conditions, basement floor scales, and heights of upper floors. For example, depending on the state of the ground can be installed only a small number of embedded piles 100 in the case of solid ground, or in the case of soft ground a plurality of embedded piles 100 may be installed. Therefore, flexible construction operation is possible by adjusting the number of temporary columns according to the situation, and reliable and cost-saving foundation construction can be carried out.

Also, preferably, the embedded pile 100 used as a temporary pillar as described above is composed of grouting steel pipe piles, not simple concrete piles, and thus is formed by grouting without the need for a separate reinforcement, unlike a general concrete pillar. Can be easily formed and the reliability can be further improved. In addition, the embedded pile 100 can easily secure an omnidirectional bearing force as it has a circular cross section, and includes a front end reinforcing plate 20, an excavation reinforcing plate 30, and a positioning piece 40 at the lower end. As it is configured so that the mounting pile 100 and the installation of temporary columns using the same can be more easily. In addition, since the tip reinforcing plate 20 provided at the lower end of the embedded pile 100 is provided at the base of the embedded pile 100, the installation and support of the temporary pillar can be made more reliable.

In addition, as the bracket 230 fixed to the embedding pile 100 is provided, the buckling of the embedding pile 100 is prevented, and the construction is performed by assisting the casting of the frame such as the girder 240 and the main pillar 250. The reliability and stability of the can be further improved.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, It should be understood that various modifications may be made by those skilled in the art without departing from the spirit and scope of the present invention.

10: File 11: Grouting Hole
12: hollow 20: tip reinforcing plate
21: seating part 22: extension part
23: first through hole 24: second through hole
30: excavation reinforcement plate 32: first reinforcement plate
34: second reinforcing plate 40: positioning piece
100: embedded pile 210: earth wall
220: drilling device 230: bracket
240: girder 250: the pillar
260: file cap

Claims (6)

In the foundation method using the embedded pile,
Installing a retaining wall 210 in the ground;
Forming a plurality of excavation holes by using the excavation device 220 at a portion where the main pillar 250 is disposed;
Embedding the embedded pile 100 in the excavation hole and grouting through the embedded pile 100;
Performing an initial excavation work;
Performing a ground-floor framing arrangement including a girder 240;
Performing further digging and basement framework placement work down to foundation level (L);
Installing a main pillar (250) between the plurality of embedded piles (100); And
And cutting off and removing an upper end of the embedded pile 100 extending above the foundation level (L).
The embedding pile 100,
A grouting liquid hole 11 is formed through the inner and outer circumferential surfaces of the lower end to allow the grouting liquid to pass therethrough, and a hollow pile 10 having an open bottom surface; And
A tip reinforcing plate having a seating portion 21 on which the lower end of the pile 10 is seated, and an extension portion 22 extending upward from an edge of the seating portion 21; Including,
The extension part 22 is a foundation method using the embedded pile, characterized in that inclined so as to be spaced apart from the center of the seating portion 21 toward the upper side. The method of claim 1,
The main pillar 250 is a foundation method using the embedded pile, characterized in that disposed between the plurality of embedded pile (100). The method according to claim 1 or 2,
For each basement height is provided with a bracket 230 fixed to the embedded pile 100,
The basement framework is a foundation method using the embedded pile, characterized in that supported by the bracket (230). delete The method of claim 1,
The embedding pile 100, the foundation method using the embedded pile, characterized in that it further comprises an excavation reinforcement plate (30) protruding downward from the bottom of the seating portion (21). 6. The method according to claim 1 or 5,
The tip reinforcing plate 20,
Basic construction method using the embedded pile, characterized in that it comprises at least one of the first through hole 23 formed over the circumference of the extension portion 22, and the second through hole 24 formed in the seating portion 21 .

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