KR101838244B1 - Cast-in-place reinforced top pile and construction method thereof - Google Patents

Abstract

The present invention relates to a cast-in-place reinforced top pile foundation, capable of simply and largely improving a soil bearing force of a structure foundation by forming a top pile structure with a reinforced core unit, wherein the upper part of the top pile structure is wide and the lower part is narrow, in an aggregate compacting layer by using cast-in-place concrete, and also by integrating the whole top pile as a single structure connected, and a construction method for the same. According to the present invention, the cast-in-place reinforce top pile foundation comprises: the aggregate compacting layer placed in the upper part of the ground; multiple reinforcing members installed at intervals in the aggregate compacting layer in order for the upper surface to be exposed to the upper part of the aggregate compacting layer and also formed in the shape of a cone with the wide upper part and the narrow lower part, wherein the reinforcing member has an open upper side and is a net-shaped member having a net unit as wire rods in multiple rows cross each other; the core unit formed as concrete is placed in an inner space of the reinforcing member; an outer reinforcing unit formed outside the reinforcing member as the concrete placed in the inner space of the reinforcing member is spread and injected into the aggregate compacting layer of the outside by leaking through the net unit of the reinforcing member; and foundation concrete installed in the upper part of the aggregate compacting layer, the reinforcing member, and the core unit and placed with the concrete for forming the core unit and the outer reinforcing unit at same time. A whole area of the net unit of the reinforcing member is equal to or greater than 40% of the whole area of the reinforcing member.

Description

BACKGROUND OF THE INVENTION Field of the Invention [0001] The present invention relates to a pile foundation,

The present invention can directly form a top pile structure with an underside of an aggregate reinforced layer and a top pile structure with a cast-in-place concrete, and integrate the entire top pile into a single continuous structure, thereby greatly improving the stiffness of the foundation And a method of constructing the pile foundation.

The top pile used as the basis of various construction and civil engineering structures is widely used as foundation work for the structure, which is advantageous to transmit the upper load to the underground.

Conventional top piles are constructed by transporting pre-cast concrete top piles manufactured in factories to the site. Specifically, as shown in FIG. 1, after the top pile 6 is placed on the ground 1 where the bottom is stopped, the crushed stone is pushed into a gap between the neighboring top piles 6, (21). ≪ / RTI >

As a result, the construction and transportation costs of the top pile construction are not only burdensome but also the handling and construction of the product is very inconvenient. In addition, the adjacent top piles 6 may be separated from each other, so that the continuity of the foundation may not be ensured, and filling and compaction of the bottom aggregate 6 bottom aggregate may be difficult.

On the other hand, in recent years, field mounted pile piles using a top container have been widely used. The above-mentioned on-site type top pile is advantageous in that it can be manufactured and transported more easily than conventional factory-made precast top piles.

For example, the "on-site top-mounted top file that can be easily combined" of the registered patent No. 10-0996728 improves the workability of the top pile using the joining portion of the top container and the reinforcing bar connecting groove.

However, the above-mentioned registration technique also poses a great burden on the manufacture and transportation of the top container. In addition, the top pile is only partially connected to each other, and there is a limitation that it is difficult to compose the crushed stone layer under the top pile because the crushed stone is pushed into the gap between the hardened top pile and the vibrator.

In order to solve the above-mentioned problems, it is an object of the present invention to provide a pile pile of the present invention, which does not need to be manufactured at a factory or transported to a site, And a method of constructing the same.

The present invention is to provide a piling foundation of a cast-in-place reinforced top pile capable of rapid construction and shortening of air and economical efficiency, and a construction method thereof.

The present invention is to provide a foundation for a top-mounted reinforced top pile and a construction method thereof, which can secure a lower support layer that is easy to install and aggregate aggregate compared to a conventional top pile.

In the present invention, not only the entire upper part of the plurality of top piles can be integrated but also the whole of the top concrete and the pile pile under the foundation concrete can be integrally installed, so that the load of the upper structure is efficiently distributed to the front part, And a method of constructing the pile foundation.

According to a preferred embodiment of the present invention, there is provided an aggregate compaction bed, A reinforcing member having a plurality of holes spaced from each other in the aggregate compaction layer so that an upper surface thereof is exposed to an upper portion of the aggregate compaction layer, the reinforcing member being formed as a cone- A core portion formed by placing concrete in the reinforcing material inner space; An outer reinforcing portion formed on the outer side of the reinforcing material while being diffused into the outer aggregate compaction layer by flowing out through the net of the reinforcing material, the concrete laid in the reinforcing material inner space; And a concrete disposed at an upper portion of the aggregate compaction layer, the reinforcing material and the core portion, the concrete being poured simultaneously with the concrete for forming the core portion and the outer reinforcing portion; Wherein the total area of the mesh of the reinforcing material is at least 40% of the total area of the reinforcing material.

delete

According to another preferred embodiment of the present invention, the stiffener is provided so as to be spaced apart from neighboring stiffeners, and the diameter of the upper surface of the stiffeners is 40 to 90% of the center spacing between the stiffeners. do.

According to another preferred embodiment of the present invention, the upper part of the reinforcing member is curved outward to form an arched shape.

According to another preferred embodiment of the present invention, a reinforced concrete pile foundation is provided, wherein an auxiliary wall is provided in the reinforcement.

According to another preferred embodiment of the present invention, there is provided a field piling reinforcing top pile foundation, characterized in that a tail portion is inserted into the ground and a portion of the upper portion is protruded upward to be located inside the reinforcing material.

According to another preferred embodiment of the present invention, a horizontal reinforcing connecting member for connecting a plurality of reinforcing members to each other is provided on the upper portion of the reinforcing member in a lattice shape.

According to another preferred embodiment of the present invention, a shear connector is provided on an upper portion of the abandoned concrete so as to protrude from the upper portion of the abandoned concrete.

According to another preferred embodiment of the present invention, there is provided a method for constructing a foundation of a piling pile of a spot pile, comprising the steps of: (a) installing a plurality of stiffeners on an upper part of a ground where a stopping operation is completed; (b) laying an aggregate on the ground around the reinforcing material and compaction to form an aggregate compaction layer; And (c) pouring concrete into the inner space of the reinforcing member to form a deep portion and an outer reinforcing portion; The present invention provides a method of constructing a spot pile reinforced top pile foundation.

According to another preferred embodiment of the present invention, in the step (a), a shape retaining port having the same shape as the inner shape of the reinforcing material is inserted in the reinforcing material, Wherein the pile foundation is removed after the pile foundation is removed.

According to another preferred embodiment of the present invention, in the step (c), abandoned concrete is laid on the aggregate compaction layer, the reinforcing material and the core part, and the abandoned concrete is poured simultaneously with the concrete for forming the core part and the outer reinforcement part. The method of claim 1, further comprising:

According to another preferred embodiment of the present invention, there is provided a method for constructing a foundation of a piling pile of a spot pile, comprising the steps of: (a) installing a plurality of stiffeners on an upper part of a ground where a stopping operation is completed; (b) laying an aggregate on the reinforcing material inner space and on the ground around the reinforcing material and compaction of the aggregate around the reinforcing material to form an aggregate compaction layer; And (c) casting a grout material in the reinforcing material filled with the aggregate to form a deep portion and an outer reinforcing portion; The present invention provides a method of constructing a spot pile reinforced top pile foundation.

According to another preferred embodiment of the present invention, in the step (a), a tail portion is inserted in such a manner that a part of the upper end protrudes to the upper portion of the ground, and a stiffener is installed in the upper portion of the stiffener The present invention provides a method of constructing a piling base of a cast-in-place reinforced top.

The present invention has the following effects.

First, since the top pile is formed by the cast concrete on site, it is not necessary to manufacture the top pile at the factory or to transport it to the site, and the form top container is also unnecessary. Therefore, it is economical because there is no transportation work of the top pile or top container or the related cost burden.

Second, the deep part of the top pile is composed of high quality concrete reinforced with reinforcement. At the same time, when the deep concrete is poured, concrete is diffused and injected outside the reinforcing material, and the reinforcing part is formed on the aggregate compaction layer. Therefore, the structural performance is excellent, and the construction speed is very fast, and the air shortening is possible.

Third, the distance between adjacent top piles can be adjusted by adjusting the diameter of the upper surface of the stiffener. Accordingly, by sufficiently ensuring the compaction work space between the neighboring top piles, it is possible to easily carry out the construction work of the aggregate as compared with the conventional top pile, and a much finer lower supporting layer can be secured.

Fourth, a plurality of stiffeners may be connected to each other by a horizontal reinforcing connection member so that the entire upper part of the plurality of top stakes can be integrated. In addition, it is possible to put the abandoned concrete under the foundation foundation concrete and the whole concrete of the top pile together. Therefore, by constructing the entire field-mounted top pile as one continuous structure, it is possible to distribute the load of the upper structure very efficiently to the entirety of the foundation, and to greatly improve the seismic performance.

1 is a sectional view showing a conventional top pile foundation.
Fig. 2 is a sectional view showing the foundation of a field piling reinforced pile of the present invention. Fig.
3 is a side view showing an embodiment of a stiffener.
4 is a side view showing another embodiment of the stiffener.
5 is a cross-sectional view showing the foundation of a cast-in-place reinforced top pile of the present invention having a tail portion.
6 is a cross-sectional view showing the foundation of a field-inserted reinforced top pile of the present invention having a shear connection member.
FIG. 7 is a view showing a step-by-step process for a method of constructing a spot-bearing reinforced top pile foundation of the present invention according to an embodiment; FIG.
FIG. 8 is a view showing a stepwise process for a method of constructing a spot pile foundation of a pile according to another embodiment of the present invention; FIG.
9 is a sectional view showing a top pile supporting the superstructure;

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

2 is a cross-sectional view showing the foundation of a piling pile of the present invention.

As shown in FIG. 2, the foundation of the present invention includes a aggregate compaction layer 21 installed on the ground 1; A plurality of columns are spaced apart from each other in the aggregate compaction layer (21) so that the upper surface is exposed to the upper portion of the aggregate compaction layer (21) A reinforcing member (22) formed of a meshed member; A core portion 23 formed by placing concrete in an inner space of the reinforcing member 22; An outer reinforcing portion 24 formed on the outer side of the reinforcing member 22 while being diffused into the outer aggregate compaction layer 21 by flowing out through the net of the reinforcing member 22, the concrete laid in the inner space of the reinforcing member 22; And abandoned concrete 3 disposed at the top of the aggregate compaction layer 21, the stiffener 22 and the core 23 and poured simultaneously with the concrete for forming the core 23 and the reinforcement 24, ; . ≪ / RTI >

The aggregate compaction layer 21 may be formed by arranging aggregates on the ground 1 around the reinforcing material 22 after installing the reinforcing material 22 to be described later after the ground stopping operation.

The reinforcing member 22 is installed to expose the upper surface of the aggregate compaction layer 21, and a plurality of the reinforcing member 22 can be installed.

Each of the reinforcing members 22 is a cone-shaped member having a concave cone shape in which the netting is formed by crossing a plurality of lines of wire.

The reinforcing material 22 is preferably made of a metal material, and may be composed of a pre-assembled steel pipe network, a metal lath net, a steel net, and the like.

The reinforcing material 22 prevents the aggregate of the aggregate compaction layer 21 located on the outer side from flowing into the side of the core portion 23 to thereby maintain the quality of the core portion 23 and prevent the aggregate compaction layer 21 from loosening .

The size of the net of the reinforcing material 22 is designed to be equal to or less than the aggregate size of the aggregate compaction layer 21 in order to prevent the aggregate of the aggregate compaction layer 21 from flowing into the reinforcing material 22 desirable.

The upper portion of the reinforcing member 22 is opened to pour concrete therein.

The core 23 is formed by placing concrete in the space inside the reinforcing member 22 through the open upper space of the reinforcing member 22. [

The core portion 23 may be formed by directly pouring concrete into the reinforcing material 22 or by injecting cement mortar or sticky grout having a proper slump into the reinforcing material 22 before filling the aggregate .

Here, the concrete may be laid only inside each reinforcing member 22, or may be integrally installed at a predetermined height above the reinforcing member 22 and the aggregate compaction layer 21.

The outer reinforced portion 24 is formed on the outer surface of the reinforcing member 22 by discharging the concrete poured through the reinforcing member 22 through the net of the reinforcing member 22.

That is, the cement paste, fine aggregate, and the like in the concrete placed in the reinforcing material 22 may flow out to the outside through the net, and may be diffused and injected into the outer aggregate compaction layer 21 to form the outer reinforcing portion 24.

Accordingly, the reinforcing member 22 acts as a reinforcing bar of the reinforced concrete structure between the inner core 23 and the outer reinforcing portion 24, thereby greatly improving the structural performance of the put-up reinforcing steel pile.

The outer reinforcing portion 24 may be formed by adjusting the slump of the concrete or adjusting the diffusion range of the concrete injected into the aggregate compaction layer 21 using an admixture.

In the present invention, the top pile can be directly formed on the aggregate compaction layer (21) by using the cast concrete placed in the state where the reinforcing material (22) is installed, so that it is possible to economically and quickly construct the top pile. In addition, it is convenient and economical because there is no need to manufacture or transport the top pile or top container separately.

The core portion 23 of the top pile is made of high-quality concrete reinforced by the reinforcing material 22, and the aggregate of the top layer pile supporting pillars 21, (23) The concrete injected at the time of pouring concrete forms an outer reinforcement portion (24), so that the structural performance is excellent and the construction speed is also very fast.

In addition, the upper portion of the aggregate compaction layer 21 has a relatively small density of aggregate. Therefore, the area of the outer reinforcing portion 24 on the upper portion of the reinforcing member 22 is enlarged, so that the outer reinforcing portion 24 between the neighboring reinforcing members 22 as shown in Fig. 2 can form an arch shape. Therefore, the structural performance of the top pile can be greatly improved by the arch behavior of the outer reinforcing portion 24. [

The total area of the net formed in the reinforcement 22 may be 40% or more of the total area of the reinforcement 22.

In order to form the outer reinforcing portion 24 having an appropriate thickness outside the reinforcing member 22, a net having an area of at least 40% of the total area of the reinforcing member 22 should be formed. More preferably, It is advantageous for the netting to form at least 50% of the area.

The stiffener 22 may be spaced from the neighboring stiffener 22. The diameter of the upper surface of the stiffener 22 may be 40 to 90% of the center spacing between the stiffeners 22.

Conventional top piles are constructed such that a plurality of neighboring top piles are brought into contact with each other. In contrast, in the present invention, since the outer reinforcing portion 24 is naturally enlarged and connected when the core portion 23 is formed, it is not necessary to provide the adjacent reinforcing members 22 in contact with each other.

Therefore, since the adjacent stiffeners 22 are spaced apart from each other, the spacing between the top piles is large, so that it is easy to construct and compact the aggregate, and a dense lower support layer can be secured.

If the diameter of the upper surface of the stiffener 22 is less than 40% of the center distance between the stiffeners 22, the volume of the top pile is too small and the contact area with the aggregate compaction layer 21 is small, .

If the diameter of the upper surface of the stiffener 22 exceeds 90% of the center spacing between the stiffeners 22, the interval between the stiffeners 22 is too narrow, which makes it difficult to install and fill the aggregate.

Considering these points, it can be said that the diameter of the upper surface of the stiffener 22 is preferably 70% or less of the center spacing between the stiffeners 22.

As shown in FIG. 2 and the like, a horizontally-reinforcing connecting member 27 for connecting a plurality of reinforcing members 22 to each other may be provided on the upper portion of the reinforcing member 22 in a lattice form.

The horizontal reinforcing connector 27 may be made of reinforcing bars or the like.

The horizontal reinforcing connecting member 27 is provided in a lattice shape so as to connect the upper portions of the respective reinforcing members 22 provided on the ground 1 where the stopping operation is completed so as to maintain the vertical position of the reinforcing member 22 .

In addition, the horizontal reinforcing connecting member 27 connects all the plurality of top piles by a single structure.

Since the upper portions of the plurality of top piles are entirely strengthened by the horizontal reinforcing connecting member 27, the relative movement and deformation of the top pile can be significantly reduced. Further, the upper load can be more efficiently supported and the seismic performance can be greatly improved.

3 is a side view showing an embodiment of a stiffener.

As shown in FIG. 3, the upper portion of the stiffener 22 may be curved outward to be arcuate.

If the upper end of the reinforcing member 22 is curved outwardly, the outer reinforcing portion 24 between the neighboring reinforcing members 22 can more reliably form the arch structure, thereby increasing the structural performance.

4 is a side view showing another embodiment of the stiffener.

As shown in FIG. 4, an auxiliary net 25 may be provided in the reinforcing member 22.

When the reinforcing member 22 is made of a skeletal structure using a reinforcing bar or a wire, the mesh size of the reinforcing member 22 may be larger than the aggregate size of the aggregate compaction layer 21.

In this case, the auxiliary net 25 having the mesh size of the reinforcement 22 less than or equal to the aggregate size of the aggregate compaction layer 21 can be inserted into the reinforcement 22.

The auxiliary net 25 does not need to be thick because the aggregate is to be inflowed only, and a variety of net- works such as a metal net and a fiber net can be used.

The auxiliary net 25 may be coupled to the reinforcing member 22 to prevent the auxiliary net 25 from floating when the concrete is laid and a separate filling material may be filled in the auxiliary net 25.

5 is a cross-sectional view showing the foundation of a field-inserted reinforced top pile of the present invention having a tail portion.

As shown in FIG. 5, the foundation of the present invention may be further provided with a tee part 26, which is inserted into the ground 1 and a part of which is protruded upward to be located inside the reinforcing material 22 have.

The frame 26 can be installed separately from the reinforcing member 22. When the frame 26 is provided inside the reinforcing member 22, it is easy to secure the position of the reinforcing member 22 uniformly. Also, it is possible to reduce the deformation of the top pile when the load acts on the structure.

Since the tee portion 26 is inserted into the ground 1 where the stopping operation is completed, it is expected that additional supporting force is secured.

The frame portion 26 may be made of a material having high rigidity such as a steel pipe or a concrete material.

The ground 1 may be a soil sand in the field or may be a first aggregate compaction layer 21 when the ground is weak.

That is, after the aggregate material compaction layer 21 is formed in a primary shape, the frame portion 26 is inserted into the aggregate material compaction layer 21, and then the stiffener 22 The aggregate compaction layer 21 may be formed secondarily.

FIG. 6 is a cross-sectional view illustrating the foundation of a field-inserted reinforced top pile of the present invention having a shear connection member.

6, abandoned concrete 3 is laid on the aggregate compaction layer 21, the stiffener 22 and the core portion 23, and the upper end of the abandoned concrete 3 is provided with a shear connection member 4 As shown in Fig.

The shear connecting member 4 reinforces the horizontal shearing force against the earthquake load by unifying the foundation of the upper part of the abandoned concrete 3.

That is, the top pile foundation, the abandoned concrete (3), and the foundation are integrated to increase the resistance to horizontal force.

The shear connector 4 may be formed of a reinforcing bar, an iron plate, or the like.

The concrete for the top concrete 3 and the concrete for forming the top pile may be integrally installed. This makes it possible to form the entire field-mounted top pile with one continuous structure together with the above-described horizontal reinforcing connector 27, so that the load of the upper structure 5 can be distributed very efficiently to the entirety of the foundation and the seismic performance It is possible to greatly improve.

FIG. 7 is a view showing a stepwise process for a method of constructing a spot pile foundation of a pile according to an embodiment of the present invention.

The present invention relates to a method of constructing a spot pile foundation of a spot pile in accordance with the present invention.

In the method of constructing the spot pile foundation of the present invention, a plurality of stiffeners 22 are installed (a) on the ground 1 where the stopping operation is completed (Fig. 7 (a)).

The stiffener 22 is installed after the ground 1 is stopped.

A horizontal reinforcing connecting member 27 may be provided on the upper portion of the reinforcing member 22 in a lattice shape so as to connect a plurality of reinforcing members 22 to each other.

In order to prevent deformation of the reinforcing material 22 when the aggregate compaction layer 21 is formed in step (b), a shape retention hole 28 may be inserted into the reinforcing material 22 in step (a).

Next, (b) an aggregate is laid on the ground 1 around the reinforcement 22, and the aggregate compaction layer 21 is formed (FIG. 7 (b)).

At this time, the aggregate is laid in a space between adjacent reinforcing materials (22) and then chopped.

The compaction of the aggregate is preferably carried out using a compactor or a vibrator.

In particular, since sufficient space can be secured between the reinforcing members 22 when the aggregate is collapsed by the vibrator, it is advantageous to lay and compact the aggregate. In addition, since the vibrator can be operated easily, it is advantageous to secure the compaction of the aggregate compaction layer 21 as compared with the conventional top pile.

(C) Concrete is poured into the inner space of the reinforcing member 22 to form the core portion 23 and the outer reinforcing portion 24 (FIG. 7 (d)).

In the step (c), abandoned concrete 3 is laid on the upper part of the aggregate compaction layer 21, the stiffener 22 and the core part 23, (E) of Fig. 7) at the same time as the concrete for forming the part (24).

The concrete for forming the core portion 23 and the outer reinforcement portion 24 may be laid and the abandoned concrete 3 may be laid directly on the upper portion so that the topping pile and the abandoned concrete 3 can be integrated.

A shear connector 4 protrudes from the abandoned concrete 3 and can be integrated with the upper foundation.

In the step (a), as shown in FIG. 7 (a), the shape retaining mouth 28 having the same shape as the internal shape of the reinforcing material 22 can be inserted into the inside of the reinforcing material 22 , As shown in FIG. 7 (c), the shape retaining opening 28 may be removed after the aggregate is compacted in the step (b).

The shape retaining mouth 28 is provided to prevent the shape of the reinforcement 22 from being deformed when the aggregate is formed and collapsed to form the aggregate compaction layer 21 around the reinforcement 22. [

The shape retaining mouth 28 is inserted into the inside of the reinforcing member 22 to support the reinforcing member 22.

The shape retaining mouth 28 may be made of wood, steel, sand bag or the like which can be used repeatedly.

The shape retaining hole 28 may be removed after the aggregate compaction layer 21 is formed, and may be retained for reinforcing the structure of the core portion 23 as the case may be.

In addition, the method of constructing the spot pile foundation of the present invention is for constructing the ground pile foundation of the present invention as described above, wherein (a) a plurality of stiffeners 22 are placed on the ground 1, Installing; (b) laying an aggregate on the inner space of the reinforcing member (22) and the ground 1 around the reinforcing member (22) to form an aggregate compaction layer (21) by grinding the aggregate around the reinforcing member (22); (C) casting a grout material in the reinforcing material (22) filled with the aggregate to form a core portion (23) and an outer reinforcement portion (24); As shown in Fig.

In this case, the reinforcing material 22 is filled in the reinforcing material 22 instead of the shape retaining hole 28 in the step (b) to prevent deformation of the reinforcing material 22.

The compaction aggregate inserted into the reinforcing material 22 may be used as a material of the deep portion 23 without being removed and the reinforcing material 22 may be used together with the cement grout or mortar etc. injected into the reinforcing material 22, (24).

The rest of the construction and the role of each constitution are the same as in the method of constructing the spot buried reinforced pile foundation of the present invention described above with reference to FIG.

FIG. 8 is a view showing a stepwise process for a method of constructing a spot pile foundation of the present invention according to another embodiment.

As shown in FIG. 8 (a), in step (a), the tent part 26 is inserted into the upper part of the ground 1 where the stopping operation is completed so that a part of the upper part protrudes to the upper part of the ground 1, The stiffener 22 may be installed such that the upper end of the portion 26 is located inside the stiffener 22. [

The additional support force can be secured by installing the tee part 26, the position of the stiffener 22 can be easily secured, and deformation of the top pile can be reduced when the structure load is applied.

8 (b) to 8 (e) are the same as those described with reference to Fig. 7 described above.

9 is a cross-sectional view showing a top pile supporting the superstructure.

Fig. 9 shows an upper structure 5 supported by the foundation of the present invention.

The top pile is formed by a concrete core portion 23 and an outer reinforcing portion 24 on the inner side and the outer side of the stiffener 22 and an outer reinforcing portion 24 is provided between the stiffeners 22 of the neighboring top pile, Shaped. Therefore, the structural performance of the top pile is greatly improved.

Furthermore, since the plurality of the field staking top piles can be constituted by one continuous structure by placing the horizontal connecting stiffener 22 as well as the shrink concrete 3 on the upper part of the plurality of top piles, (1).

1: Ground
21: aggregate compaction layer
22: Stiffener
23: Depth
24:
25: auxiliary strand
26: Te The Part
27: Horizontal reinforcement joint
28: Shape retaining mouth
3: abandoned concrete
4: Shear connector
5: Superstructure
6: Top pile

Claims (13)

An aggregate compaction layer 21 installed on the ground 1;
A plurality of columns are spaced apart from each other in the aggregate compaction layer (21) so that the upper surface is exposed to the upper portion of the aggregate compaction layer (21) A reinforcing member (22) formed of a meshed member;
A core portion 23 formed by placing concrete in an inner space of the reinforcing member 22;
An outer reinforcing portion 24 formed on the outer side of the reinforcing member 22 while being diffused into the outer aggregate compaction layer 21 by flowing out through the net of the reinforcing member 22, the concrete laid in the inner space of the reinforcing member 22; And
Abandoned concrete (3) provided on the aggregate compaction layer (21), the reinforcing material (22) and the core part (23) and simultaneously poured with the concrete for forming the core part (23) and the outer reinforcement part (24); Respectively,
Characterized in that the total area of the net of the reinforcement (22) is at least 40% of the total area of the reinforcement (22).
delete The method of claim 1,
Wherein the diameter of the upper surface of the stiffener (22) is 40 to 90% of the center spacing between the stiffeners (22).
The method of claim 1,
Wherein the upper portion of the reinforcing member (22) is curved outward to form an arched shape.
The method of claim 1,
And an auxiliary net (25) is provided inside the reinforcement (22).
The method of claim 1,
Characterized in that it is further provided with a tee (26) which is inserted into the ground (1) and a part of which is projected upward to be located inside the reinforcement (22).
The method of claim 1,
And a horizontal reinforcing connecting member (27) for connecting a plurality of reinforcing members (22) to each other is provided in a grid shape on the upper portion of the reinforcing member (22).
The method of claim 1,
And a shear connection member (4) is provided on the upper portion of the abandoned concrete (3).
A method of constructing a pile foundation for a field piling reinforcement according to claim 1,
(a) installing a plurality of stiffeners (22) on the ground (1) where the stalling operation is completed;
(b) laying an aggregate on the ground 1 around the reinforcement 22 and compaction to form an aggregate compaction layer 21; And
(c) pouring concrete into the inner space of the reinforcing member (22) to form a core portion (23) and an outer reinforcing portion (24); Wherein the method comprises the steps of:
The method of claim 9,
In the step (a), a shape retaining hole 28 having the same shape as the inner shape of the reinforcing material 22 is inserted into the reinforcing material 22,
Wherein the shape retaining port (28) is removed after consolidation of the aggregate in step (b).
The method of claim 9,
In the step (c), abandoned concrete 3 is placed on the upper part of the aggregate compaction layer 21, the stiffener 22 and the core part 23, and the abandoned concrete 3 is sandwiched between the core part 23 and the outer side Wherein the reinforcing part is poured simultaneously with concrete for forming the reinforcement part.
A method of constructing a pile foundation for a field piling reinforcement according to claim 1,
(a) installing a plurality of stiffeners (22) on the ground (1) where the stalling operation is completed;
(b) laying an aggregate on the inner space of the reinforcing member (22) and the ground 1 around the reinforcing member (22) to form an aggregate compaction layer (21) by grinding the aggregate around the reinforcing member (22); And
(c) casting a grout material in the reinforcing material (22) filled with aggregate to form a core portion (23) and an outer reinforcement portion (24); Wherein the method comprises the steps of:
13. The method according to claim 9 or 12,
In the step (a), the tent part 26 is inserted in such a manner that a part of the upper end of the upper part protrudes to the upper part of the ground 1 and the upper part of the tent part 26 is inserted into the reinforcement 22 And the reinforcing member (22) is installed so that the reinforcing member

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