KR101983068B1 - Composite Structure of Reinforced Concrete Filled Steel Pipe File - Google Patents

Abstract

The present invention provides a composite structure of a reinforced concrete filled steel pipe pile, including: a steel pipe pile having a hollow therein; a steel material shearing connector coupled to the steel pipe pile so as to form a grid shape in the hollow of the steel pipe pile; a reinforced net inserted into the hollow so as to be adjacent to the steel material shearing connector; and concrete filled in the hollow of the steel pipe pile, wherein the steel material shearing connector includes: a plurality of horizontal shearing steel material ring spaced apart along a longitudinal direction of the steel pipe pile by a certain interval and installed on an inner circumferential surface of the steel pipe pile; and a plurality of vertical shearing reinforcing bars provided in the hollow to be spaced apart by a certain interval and coupled to the horizontal shearing steel material ring.

Description

Composite Structure of Reinforced Concrete Filled Steel Pipe File}

The present invention relates to a steel pipe pile, and more particularly to a reinforced concrete filled steel pipe pile of a synthetic structure.

In general, steel pipe (鋼管, steel pipe) refers to a steel product having an empty space inside, a rod-shaped, also called a steel pipe pile. Steel pipe piles may be used as piping piles through which fluids such as water, oil, and gas pass, and structural piles used in structures such as civil engineering, construction, and machinery.

Among these, the structural steel pipe piles used in construction and civil engineering sites may be used as reinforced concrete-filled steel pipe piles by using only steel pipes or filling reinforced concrete therein.

In general, reinforced concrete filled steel pipe piles are designed and constructed using a non-synthetic structure in which steel pipes are simply used as formwork and reinforced concrete filled inside the steel pipe bears all loads without being synthesized with the steel pipe piles. Reinforced concrete-filled steel pipe piles of non-synthetic structure are widely used because they are easy to manufacture, press-fit and excavate, and easy to insert rebar networks.

1 is a view showing a reinforced concrete filled steel pipe pile of a general non-synthetic structure.

For example, as shown in Figure 1 during the construction of the foundation piles, such as most of the marine bridges, excavation of soil of the ground in the water and press the steel pipe 10 after excavation, and then inside the pressurized steel pipe 10 Insert the reinforcing bar (30) and pour the concrete (40).

That is, the reinforced concrete-filled steel pipe pile used in structures such as offshore bridges, the steel pipe 10 serves only as ground excavation and formwork, and the reinforced concrete (30, 40) filled in the steel pipe 10 is loaded all the load It is calculated and designed into a non-synthetic structure to bear the burden.

In this case, the steel pipe 10 does not consider the role as a structure other than the role of the formwork when placing concrete 40 after using it for the ground excavation purpose. Therefore, in order to secure the bearing capacity of the reinforced concrete (30, 40), the cross-sectional area of the reinforced concrete (30, 40) must be increased, and consequently, the size of the steel pipe (10) must be increased.

Therefore, the reinforced concrete-filled steel pipe pile of the non-synthetic structure, because the load in the pile structure of large diameter must bear all of the reinforced concrete, so the cross-sectional area of the reinforced concrete is very large, so the requirements of the reinforcement and concrete and steel pipes are also uneconomical problems.

In addition, since it is designed and constructed in a non-synthetic structure, there is a disadvantage in that structural safety is also disadvantageous, such that the seismic resistance is greatly reduced since the reinforced concrete receives all loads when an external force such as an earthquake occurs.

In addition, in order to solve the above problems, the shear members (bolts) may be coupled to the inner surface of the steel pipe pile by welding to combine the steel pipe pile with the reinforced concrete. However, the welding and joining of the individual shear members is not easy, and also there are many difficulties in inserting and removing the excavation equipment in the process of excavating the inside of the steel pipe pile, and inserting the rebar network after the excavation.

Republic of Korea Patent No. 10-1177426 (August 02, 2012)

Therefore, in order to solve the above-mentioned problems, the present invention provides a reinforced concrete-filled steel pipe pile of composite structure, in which the bearing capacity of the steel pipe pile is increased, thereby reducing the requirement of the reinforced concrete and reducing the size of the steel pipe, thereby increasing economic efficiency and structural stability. To provide.

The present invention is a steel pipe pile having a hollow inside; A steel shear connector coupled to the steel pipe pile while forming a lattice shape in the hollow inside of the steel pipe pile; Reinforcing bar network is inserted into the steel pipe pile coupled to the steel shear connector; And concrete filled in the hollow inside of the steel pipe pile, wherein the steel shear connecting body comprises a plurality of horizontal shear steel rings spaced apart at regular intervals along a length direction of the steel pipe pile and coupled to an inner circumferential surface of the steel pipe pile; And a plurality of vertical shear bars arranged in a vertical direction to be spaced apart at a predetermined interval in the hollow inside of the steel pipe pile and coupled to the plurality of horizontal shear steel ring.

The vertical shear bars may be welded in a vertical direction to the inside of the horizontal shear steel ring, the vertical shear bars may be bent to the inner circumferential surface of the steel pipe pile is welded to the inner circumferential surface of the steel pipe pile.

The steel shear connector may be installed only at the upper end or / and the lower end of the steel pipe pile.

Steel beams in which shear connection materials are coupled to the inside of the rebar network may be further installed.

The cross section of the steel beam may be characterized in that the circular shape, I-shaped or I-shaped cross shape.

The steel pipe pile may be made of any one of a circular steel pipe, an elliptical steel pipe, a square steel pipe.

At least one of the upper end and the lower end of the steel pipe pile may be larger than the middle portion of the steel pipe pile.

At least one of the upper end and the lower end of the steel pipe pile may have a shape that gradually widens toward the end.

The steel shear connector may be coupled to each other by the reinforcing bar and the welding or knot connection method.

It may be characterized in that the steel pipe pile is removed from the portion where the steel shear connector is not installed.

The reinforcing bar network may be installed only at the upper end and / or the lower end of the steel pipe pile.

As described above, according to the composite structure of the reinforced concrete-filled steel pipe pile of the present invention, the bearing capacity and external resistance of the steel pipe pile and the reinforced concrete through the steel shear connector is increased to reduce the requirements of the reinforced concrete and reduce the size of the steel pipe Economics and structural stability can be increased.

In addition, by applying a partial cross-section reinforced concrete composite steel pipe pile as needed, when structural necessity is required at the upper end or the lower end portion, it is possible to further increase the economic efficiency and efficiency by reducing the cost consumption.

1 is a view showing a non-synthetic structure of a conventional general reinforced concrete filled steel pipe pile.
2a and 2b is a view showing a composite structure of the reinforced concrete filled steel pipe pile according to the first embodiment of the present invention.
3 is a view showing a composite structure of reinforced concrete filled steel pipe pile according to a second embodiment of the present invention.
4 is a view showing a composite structure of reinforced concrete filled steel pipe pile according to a third embodiment of the present invention.
5 is a view showing a composite structure of the reinforced concrete-filled steel pipe pile according to a fourth embodiment of the present invention.
6A and 6B are diagrams illustrating various embodiments of steel beams and shear connecting materials inside of steel bars and steel bars inserted into the steel pipe piles.
7 is a view showing a composite structure of the reinforced concrete filled steel pipe pile according to a fifth embodiment of the present invention.
8 is a view showing a composite structure of reinforced concrete filled steel pipe pile according to a sixth embodiment of the present invention.
9 is a view showing a partial composite structure of reinforced concrete filled steel pipe pile according to other embodiments of the present invention.

Hereinafter, some embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the reference numerals to the components of the drawings, the same components are to have the same reference numerals as much as possible even if displayed on different drawings. In addition, in describing the embodiments of the present invention, when it is determined that a detailed description of a related well-known configuration or function disturbs the understanding of the embodiment of the present invention, the detailed description thereof will be omitted.

In addition, in describing the components of the embodiment of the present invention, terms such as first, second, A, B, (a), and (b) may be used. These terms are only for distinguishing the components from other components, and the nature, order or order of the components are not limited by the terms. If a component is described as being "connected", "coupled" or "connected" to another component, that component may be directly connected or connected to that other component, but there is another component between each component. May be “connected”, “coupled” or “connected”.

2a and 2b is a view showing a composite structure of the reinforced concrete filled steel pipe pile according to the first embodiment of the present invention.

Referring to FIG. 2, the composite structure of the reinforced concrete-filled steel pipe pile according to the first embodiment may include a steel pipe pile 100, a steel shear connector 200, a rebar network 300, and concrete 400. . Hereinafter, the inner, inner and inner surfaces refer to the central direction of the steel pipe pile, the outer and outer sides refer to the opposite direction. In addition, the upper side and the upper side refer to the upper direction assuming that the steel pipe pile upright, and the lower side, the lower side refers to the opposite direction.

Steel pipe pile 100 has a hollow therein, it may have a variety of cross-sectional shape. For example, the steel pipe pile 100 may be made of any one of a circular steel pipe, an elliptical steel pipe, a square steel pipe. In addition, the steel pipe pile 100 may be configured to have a different thickness and cross-sectional area (diameter) of the upper end, the middle and the lower end.

Steel pipe pile 100 of the first embodiment has a circular cross-section of the upper end, the middle, and the lower end are all circular and have the same size, but is not limited thereto.

The steel shear connector 200 is combined with the steel pipe pile 100 while forming a lattice shape in the hollow interior of the steel pipe pile 100. The steel shear connector 200 may be protruded to a predetermined length into the hollow inside of the steel pipe pile 100, thereby allowing the reinforced concrete and the steel pipe pile 100 to be synthesized.

The lattice-shaped steel shear connector 200 can efficiently resist the shear force generated between the reinforced concrete and the steel pipe pile when the reinforced concrete-filled steel pipe pile of the composite structure receives an external force.

The steel shear connector 200 may be installed only at the upper end and / or the lower end of the steel pipe pile 100.

Reinforced concrete-filled steel pipe pile is a large shear force can be generated as the strain rate of the steel pipe pile 100 and the reinforced concrete at the upper and lower portions mainly during the external force action. In addition, the shear force is most generated at the upper end and the lower end by the dry shrinkage and creep of the internal reinforced concrete. Therefore, the steel shear connector 200 may be efficiently installed at the upper end or the lower end of the steel pipe pile (100).

Therefore, the steel shear connector 200 may be installed at the upper end or the lower end of the steel pipe pile 100, or both the upper end and the lower end. In addition, the steel shear connector 200 may be installed in all sections up to the middle portion.

The rebar network 300 may be inserted into the steel pipe pile 100 to which the steel shear connector 200 is coupled. That is, the rebar network 300 is inserted into the hollow inside of the steel pipe pile 100, the concrete 400 is filled in the hollow inside of the steel pipe pile 100 can constitute a reinforced concrete composited with the steel pipe pile (100). have.

As described above, the steel shear connector 200 providing a composite structure of the steel pipe pile 100 and the reinforced concrete may be configured to include a horizontal shear steel ring 210 and a vertical shear rebar 220.

Horizontal shear steel ring 210 is spaced apart a predetermined interval along the longitudinal direction of the steel pipe pile (100), a plurality of are installed on the inner peripheral surface of the steel pipe pile (100). That is, the horizontal shear steel ring 210 is a ring (Ring) -shaped steel, it is installed in contact with the inner circumferential surface of the steel pipe pile 100 may be protruded to a predetermined length inward while being coupled by welding. The horizontal shear steel ring 210 can effectively cope with the resistance to external forces by reducing the gap at the upper end and the lower end where the shear force is large.

The plurality of vertical shear bars 220 are arranged to be spaced apart at a predetermined interval in the hollow inside of the steel pipe pile 100, it may be combined with a plurality of horizontal shear steel ring (210). The vertical shear reinforcement 220 may be welded in the vertical direction to the inside of the horizontal shear steel ring (210).

In addition, as shown in FIG. 2B, the vertical shear bar 220 may be bent so that the upper and lower ends thereof face the inner circumferential surface of the steel pipe pile 100, and may be welded to the inner circumferential surface of the steel pipe pile 100.

The horizontal shear steel ring 210 is coupled to the inner circumferential surface of the steel pipe pile 100 while forming the lattice structure of the above-described horizontal shear steel ring 210 and the vertical shear steel reinforcement 220, thereby further maximizing external resistance. Not only the vertical shear force between the pile 100 and the concrete 400 but also provides a structure that can effectively resist the relaxation displacement of the concrete to fall horizontally.

In addition, the shear resistance is significantly increased compared to the conventional shear bolts, it is possible to maximize the internal space of the steel pipe during construction. That is, the vertical shear reinforcement 220 during the excavation of the soil provides a guide shape that can mitigate the interference of the horizontal shear steel ring 210, thereby facilitating the excavation of the soil by facilitating the insertion and removal of the excavation equipment, It is easy to insert the rebar network. In particular, the upper and lower ends of the vertical shear bars 220 are bent to face the inner circumferential surface of the steel pipe pile 100, and then welded to the inner surface of the steel pipe pile 100, thereby inserting and extracting excavation equipment and inserting the rebar network. It can be very convenient. In addition, the upper and lower ends of the vertical shear bars 220 are welded to the inner surface of the steel pipe pile 100, thereby significantly increasing the coupling force between the steel pipe pile 100 and the steel shear connector 200.

3 is a view showing a composite structure of reinforced concrete filled steel pipe pile according to a second embodiment of the present invention. In the present embodiment, the description will be mainly focused on different parts from the above-described embodiment.

3, in the composite structure of the reinforced concrete-filled steel pipe pile of the second embodiment, the steel pipe pile 100 is different in that the thickness of the upper end portion and the lower end portion is further reinforced. Here, the upper end and the lower end refer to the upper part and the lower part in which the shear force and the compressive force can be greatly generated by the external force.

That is, the upper portion 110 or / and the lower portion 120 of the steel pipe pile 100 may be larger than the middle portion of the steel pipe pile (100). As described above, since the steel pipe pile 100 and the reinforced concrete are exposed to the external force at the upper end 110 and the lower end 120, the external resistance may be increased to sufficiently resist the external force.

Therefore, in this embodiment, the upper end 110 and the lower end 120 of the steel pipe pile 100 may be implemented in a thicker form than the middle portion by a predetermined length. The thick shape may be formed by thickening the thickness of the steel pipe pile 100 itself, or by inserting additional steel pipe piles to the outside and then welding them together.

4 is a view showing a composite structure of reinforced concrete filled steel pipe pile according to a third embodiment of the present invention. In the present embodiment, the description will be mainly focused on different parts from the above-described embodiment.

Referring to FIG. 4, the steel pipe pile 100 in the above-described first and second embodiments is a circular steel pipe having a circular cross section, whereas the steel pipe pile 100 is a rectangular steel pipe pile 101 having a rectangular cross section in the present embodiment. have.

Therefore, the shape of the steel shear connector 201 coupled to the inner circumferential surface of the steel pipe pile 101 according to the shape change of the steel pipe pile 101 may be modified. That is, the horizontal shear steel ring 211 may be deformed to correspond to the rectangular shape, and the vertical shear steel bars 221 may be arranged to be spaced apart at regular intervals to match the shape of the horizontal shear steel ring 211.

5 is a view showing a composite structure of the reinforced concrete-filled steel pipe pile according to a fourth embodiment of the present invention. In the present embodiment, the description will be mainly focused on different parts from the above-described embodiment.

5, in the composite structure of the reinforced concrete-filled steel pipe pile of the fourth embodiment, the steel pipe pile 101 is a modification of the third embodiment, and the thickness of the upper end 111 and the lower end 121 is further reinforced than the middle portion. Is different.

 In the present embodiment, the upper end 111 and the lower end 121 of the rectangular steel pipe pile 101 may have a thicker outer wall than the middle portion by a predetermined length.

6A and 6B are views illustrating various embodiments of steel beams and shear connecting members installed in the reinforcing steel bars and the reinforcing steel bars inserted into the steel pipe pile 100.

As described above, the rebar network 302 is formed inside the steel pipe pile 100 and constitutes reinforced concrete together with the concrete 400 that is filled. The steel inserted into the steel pipe pile 100 is generally used to use the reinforcing bar 302, but the steel beams (500, 501, 502) and the shear connector (600, 601, together with the reinforcing bar 302 to improve efficiency) 602 may be installed inside the steel pipe pile (100).

Referring to FIG. 6, the rebar network 302 may further include shear connectors 600, 601, and 602 and steel beams 500, 501, and 502 which are implemented in various forms in order to increase synthesis efficiency. That is, the shear connector 600, 601, 602 and the steel beams 500, 501, 502 may be combined with the concrete 400 while being installed inside the rebar network 302 to further reinforce the strength of the reinforced concrete.

The steel beams 500, 501, and 502 are disposed perpendicular to the central region of the steel pipe pile 100, and the shear connecting members 600, 601, and 602 are made of a plurality of steel beams at various positions of the steel beams 500, 501, and 502. The beams 500, 501, and 502 may be disposed along a length direction of the beams.

For example, in FIGS. 6B and 6B, steel beams 500 and 501 having I-shaped steels intersected with each other are shown in the center thereof, and FIG. 6C shows steel beams having a cylindrical shape. 502 is a modified embodiment. In addition, the steel beam 502 provided with the shear connector 602 as shown in (B) of FIG. 6B is the steel pipe pile 100 and the reinforced concrete, even if the above-described reinforcing bar network 302 is omitted in the middle of the steel pipe pile (100) It can provide a synthetic force with. That is, the reinforcing bar 300 may be omitted through the steel beam 502 in the middle portion of the steel pipe pile 100, which hardly generates shear flow.

Reinforced concrete is designed to arrange plastic hinge area by placing dense band reinforcing bar at the moment of maximum moment when earthquake occurs in seismic specification. Here, the reinforced concrete composite steel pipe pile (100) synthesized in the shear connecting members (600, 601, 602) and the steel beam (500, 501, 502) installed inside the steel pipe pile (100) is an infinitely wide band of reinforcing bars Provides the same effect as the firing zone.

For example, when the thickness of the steel pipe pile 100 and the diameter of the reinforcing bars are the same, the cross-section area of 5 times or more for each of the vertical main bars in which the rebars are arranged in two stages at 100 mm intervals and the band rebars in the two stages at 100 mm intervals is respectively provided It can be seen that the file 100 has.

As such, when the steel beams 500, 501, and 502 provided with the shear connecting members 600, 601, and 602 are installed inside the steel pipe pile 100, when the reinforced concrete is compressed and destroyed, it becomes a perfect triaxial compression state and destroys the reinforced concrete. Since the strength can be greatly increased, the closing effect by the steel pipe pile 100 can be further increased than the strip reinforcing bars.

Therefore, the cross-sectional area of the reinforced concrete steel pipe pile 100, which is a synthetic structure, can be reduced rather than the reinforced concrete steel pipe pile, which is a non-synthetic structure, thereby greatly improving economic efficiency and constructability.

7 is a view showing a composite structure of the reinforced concrete filled steel pipe pile according to a fifth embodiment of the present invention. In the present embodiment, a description will be mainly given of parts different from the above-described embodiments.

Referring to FIG. 7, in the present exemplary embodiment, the upper end portion 112 or the lower end portion of the steel pipe pile 101 may have a shape that gradually widens toward an end portion, that is, an upper side or a lower side. The steel pipe pile 101 having such a shape further increases the combined amount of the steel pipe pile 101 and the reinforced concrete at the upper end 112 and the lower end, thereby further increasing external resistance capable of resisting external force.

At this time, the steel pipe pile 101 may have a variety of shapes, such as rectangular, square, round, oval.

8 is a view showing a composite structure of reinforced concrete filled steel pipe pile according to a sixth embodiment of the present invention. In the present embodiment, a description will be mainly given of parts different from the above-described embodiments.

Referring to FIG. 8, in the present embodiment, in the composite structure of the reinforced concrete-filled steel pipe pile according to the sixth embodiment, the steel pipe pile 100 has a difference in that the thickness of the upper region and the lower region is further reinforced than the middle portion. That is, in the present embodiment, the upper end region 112-1 of the square or elliptic steel pipe pile 100 has a shape that gradually increases toward the outer side, and the outer wall of the lower end region 122-2 is constantly It can be carried out in a thicker form.

9 is a view showing a partial composite structure of reinforced concrete filled steel pipe pile according to other embodiments of the present invention.

9, the steel shear connector 200 and the steel pipe pile 100 is not all installed (A) the upper end 111 and the lower end 121, (B) the upper end 111, (C) the lower end ( 121) It may be partially installed only in the area. That is, the present invention can also be constructed as a partial composite structure of the reinforced concrete-filled steel pipe pile (100).

That is, the steel shear connector 200 and the steel pipe pile 100 may be installed only in at least one section of the upper end 110 or the lower end 120 of the pile.

Here, as shown in FIG. 9B, the steel shear connector 200 may be coupled to each other by the rebar network 300 and the welding or knot connection method 230 described above. Therefore, as the steel pipe pile 100, the steel shear connector 200 and the reinforcing bar 300 is integrated with the composite force can be further increased.

Reinforced concrete composite When the steel pipe pile 100 needs to be piled over an underwater section such as sea, lake, or river, the reinforced concrete composite having the steel shear connector 200 corresponding to the entire length of the steel pipe pile 100 Applying the steel pipe pile 100 is advantageous in economics and construction.

However, in the land section, it is disadvantageous in terms of economy and workability to use the sheared reinforced concrete composite steel pipe pile 100 except for a special case in which the cross section, that is, the diameter of the steel pipe pile 100 is to be reduced due to site conditions. Therefore, in order to further secure safety by external forces such as earthquakes while improving economics and constructability, the upper end portion 110 is composed of reinforced concrete composite steel pipe pile 100, and the remaining middle portion and the lower portion 120 portion of the reinforced concrete pile It can be configured as a partial section, that is, a partial cross-section reinforced concrete composite steel pipe pile (100).

In the case of the partial cross-section reinforced concrete composite steel pipe pile 100, when structural necessity is required in the lower portion 121, the reinforced concrete composite steel pipe pile 100 may also be configured in the lower portion 121 section.

The upper portion 111 and the lower portion 121 portion as shown in Figure 9 (A) is formed of a reinforced concrete composite steel pipe pile 101 can be usefully used as a pillar member of the extra dose bridge, Figure 9 (B) As shown in FIG. 9 (C), only the upper portion 111 is formed of the reinforced concrete composite steel pipe pile 100, which is useful for the foundation pile used in the foundation ground of the structure. The structure formed of concrete composite steel pipe pile 100 can be usefully used as a bridge column pillar structure.

In this case, as described above, in the case of the reinforced concrete composite steel pipe pile 100, each end steel pipe pile 100 is integrated with the reinforcing bar network 300 in advance to be inserted integrally when the reinforcing bar network 300 is inserted into the concrete Cast 400 to synthesize reinforced concrete and steel pipe. The structure of integrating the steel pipe 300 and the steel pipe in the partial cross-section reinforced concrete pipe pile 100 is mutually welded or knotted with the reinforcement mesh 300 of each end portion of the partial cross-section reinforced concrete composite pipe tube 100 Bonding is integrated by method 230 to integrate.

 Integrate by welding or knot connection method to the lattice type shear steel consisting of the horizontal shear steel ring 210 and the vertical shear reinforcing steel 220 on the inner circumferential surface of the reinforcing steel network 300 and the steel pipe pile 100 located in each part. We do with structure to do. In the structure as described above, the steel pipe pile 100 is integrated with the reinforcing bar 300, and can be easily inserted into the ground excavation portion.

As described above, according to the composite structure of the reinforced concrete-filled steel pipe pile of the present invention, the bearing capacity and external resistance of the steel pipe pile and the reinforced concrete through the steel shear connector is increased to reduce the requirements of the reinforced concrete and reduce the size of the steel pipe Economics and structural stability can be increased.

In addition, by applying a partial cross-section reinforced concrete composite steel pipe pile as needed, when structural necessity is required at the upper end or the lower end portion, it is possible to further increase the economic efficiency and efficiency by reducing the cost consumption.

In the above description, all elements constituting the embodiments of the present invention are described as being combined or operating in combination, but the present invention is not necessarily limited to the embodiments. That is, within the scope of the present invention, all of the components may be configured or operated by selectively combining one or more of them. In addition, the terms "comprise", "comprise" or "having" described above mean that the corresponding component may be inherent unless specifically stated otherwise, and thus excludes other components. It should be construed that it may further include other components instead. All terms, including technical and scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art unless otherwise defined. Terms commonly used, such as terms defined in a dictionary, should be interpreted to coincide with the contextual meaning of the related art, and shall not be construed in an ideal or overly formal sense unless explicitly defined in the present invention.

The above description is merely illustrative of the technical idea of the present invention, and those skilled in the art to which the present invention pertains may make various modifications and changes without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are not intended to limit the technical idea of the present invention but to describe the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The protection scope of the present invention should be interpreted by the following claims, and all technical ideas within the equivalent scope should be interpreted as being included in the scope of the present invention.

100, 101: steel pipe pile
110, 111, 112, 112-1: upper reinforcement
120, 121, 122, 122-1: lower reinforcement
200, 201: steel shear connector
210, 211, 212, 213: horizontal shear steel ring (210)
220, 221, 222, 223: vertical shear rebar
300, 301, 302: Rebar network
400: concrete
500, 501, 502: steel beam
600, 601, 602: Shear connector

Claims (11)

Steel pipe pile having a hollow inside;
A steel shear connector coupled to the steel pipe pile while forming a lattice shape in the hollow inside of the steel pipe pile;
Reinforcing bar network is inserted into the steel pipe pile coupled to the steel shear connector; And
It includes concrete filled in the hollow inside of the steel pipe pile,
The steel shear connector,
A plurality of horizontal shear steel rings spaced apart from each other along a longitudinal direction of the steel pipe pile and coupled to an inner circumferential surface of the steel pipe pile; And a plurality of vertical shear bars arranged in the vertical direction so as to be spaced apart at a predetermined interval in the hollow inside of the steel pipe pile and coupled with the plurality of horizontal shear steel rings.
The vertical shear bar is welded to the inside of the horizontal shear steel ring,
The vertical shear bar is bent so that the upper and lower ends toward the inner circumferential surface of the steel pipe pile is welded to the inner circumferential surface of the steel pipe pile,
The steel shear connector is installed on the entire steel pipe pile,
The steel shear connector is a composite structure of reinforced concrete-filled steel pipe pile is coupled to each other by the reinforcing bar network and the welding or knot connection method. delete delete The method of claim 1,
Composite structure of reinforced concrete-filled steel pipe pile is further provided with a steel beam coupled to the shear connector in the reinforcing bar network. The method of claim 4, wherein
The cross section of the steel beam is a circular shape, I-shaped or I-shaped cross-section, characterized in that the composite structure of reinforced concrete-filled steel pipe pile. The method of claim 1,
The steel pipe pile is made of any one of a circular steel pipe, an elliptical steel pipe, a square steel pipe, composite structure of reinforced concrete filled steel pipe pile. The method of claim 1,
At least one of the upper end and the lower end of the steel pipe pile is larger than the middle portion of the steel pipe pile, the composite structure of reinforced concrete-filled steel pipe pile. The method of claim 1,
At least one of the upper end and the lower end of the steel pipe pile has a shape that gradually widens toward the end, composite structure of reinforced concrete filled steel pipe pile. delete delete delete

Images