KR20200074495A - Pile cap - Google Patents

Abstract

The present invention relates to a pile cap, which can allow a protruding part for expanding a cross section to be exactly constructed so that lateral force resisting performance of a pile can be maximized. The pile cap includes: a hollow pipe member having a greater diameter or width than that of the pile and embedded in the ground; and at least one protruding part provided on an outer circumferential surface of the pipe member. The pile is constructed in the ground by penetrating into the pipe member.

Description

File cap {PILE CAP}

The present invention relates to a pile cap capable of maximizing the lateral force resistance performance of the pile.

The foundation is constructed on the ground to stably support a structure having a heavy weight, such as a building, and can usually securely support, and has excellent workability and economical efficiency, and a piled foundation is most widely used.

When the lateral load acts on these piles, it can be confirmed that a large ground reaction force is generated near the ground surface. If the cross section of the pile is increased near the ground surface, a larger lateral load can be received. In order to improve the lateral load resistance, a pile has been proposed in which an extended projection is fixed to the side of the pile.

On the other hand, although the ground survey is usually performed before the construction of the pile, the ground survey is not performed on all the file locations, and even if the ground survey is performed, the final depth of the file is not accurately known. That is, the final depth of penetration can be confirmed only after construction.

If the file is constructed without knowing the exact depth of insertion, the extended projection of the file may not be located near the desired surface, and the entry may be insufficient or excessive. In this case, an improved effect of the lateral load resistance due to the extended projection cannot be expected, and for this reason, the extended projection must be made larger than required.

(Patent Document 1) US 10100486 B2

Accordingly, an object of the present invention is to provide a pile cap capable of maximizing the lateral force resistance performance of a pile by enabling precise construction of a protrusion for cross-section expansion.

Pile cap according to an embodiment of the present invention, a larger diameter or width than the pile, a hollow tube member that is inserted into the ground; And at least one protrusion provided on the outer circumferential surface of the pipe member, wherein the pile penetrates the pipe member to be constructed on the ground.

According to the present invention as described above, by separating the file and the protrusion, it is possible to secure the protrusion as much as the required size, and it is possible to precisely position the protrusion near the ground surface and construct it. In addition, since the file cap is constructed first and then the file is constructed, the file cap can serve as a guide for the file construction.

Accordingly, in the present invention, it is possible to maximize the lateral force resistance performance near the ground surface and to improve the ground support force, and to obtain the effect of reinforcing the pile.

1 is a perspective view of a pile cap viewed from below according to an embodiment of the present invention.
2 is a view showing a construction process of a file using a pile cap according to an embodiment of the present invention.

Hereinafter, the present invention will be described in detail through exemplary drawings. It should be noted that in adding reference numerals to the components of each drawing, the same components have the same reference numerals as possible even though they are displayed on different drawings. In addition, in describing the present invention, when it is determined that detailed descriptions of related well-known structures or functions may obscure the subject matter of the present invention, detailed descriptions thereof will be omitted.

1 is a perspective view of a pile cap viewed from below according to an embodiment of the present invention.

As shown in this, the pile cap according to an embodiment of the present invention has a larger diameter or width than the pile (1; see FIG. 2) and a hollow tube member 10 that is inserted into the ground (2; see FIG. 2). ); And at least one protrusion 20 provided on the outer circumferential surface of the pipe member, so that the pile penetrates the pipe member to be constructed on the ground.

The pipe member 10 is a metal pipe member having a predetermined strength, such as a steel pipe. It is preferable that at least the steering force when the tube member is brought into the ground 2 can be withdrawn.

In addition, the hollow of the tube member 10 may have an inner diameter or an inner width slightly larger than the outer or outer width of the pile 1 to be constructed through the pile cap.

Although an example in which the cross-sectional shape of the pipe member 10 is circular is shown in FIG. 1, the present invention is not limited thereto, and may have other arbitrary cross-sectional shapes such as an ellipse or a polygon.

The protrusion 20 is installed to extend radially outward from the outer circumferential surface of the tube member 10 and along the longitudinal direction of the tube member. For example, a protrusion made of a steel plate may be joined to a pipe member made of steel pipe by welding or the like.

The protrusion 20 is formed at a plurality of flat rectangular fins arranged at a substantially right angle to the outer circumferential surface of the tube member 10, or at least one spiral blade arranged spirally along the outer circumferential surface of the tube member. Can be.

However, the shape of the protrusion 20 is not necessarily limited to this, and may be formed of a protrusion of any other shape as long as it can create an effect of expanding the cross section of the pile.

For example, the fin shape may be a polygonal shape such as a triangle, but a semicircular shape, an elliptical shape, a semi-elliptical shape, or the like. Furthermore, the protruding portion may be not a plate member, for example, a plurality of pin members or the like.

In addition, the pile cap according to an embodiment of the present invention may further include a support flange 30 provided on the top of the tube member 10.

The support flange 30 is formed of a ring-shaped plate material, for example, it can be joined by welding or the like on the top of the pipe member 10 made of steel pipe.

Since the support flange 30 is provided on the upper end of the pipe member 10, the upper end of the pile cap can be prevented from entering below the ground surface, and thus, it is possible to reliably ensure the correct depth of insertion of the protrusion 20. It will be.

Thus, according to the present invention, by separating the pile (1) and the projection (20), it is possible to secure the projection as much as the required size, there is an advantage that can be constructed by accurately aligning the projection near the ground surface.

Hereinafter, a process of constructing a file using the above-described file cap will be briefly described.

2 is a view showing a construction process of a file using a pile cap according to an embodiment of the present invention.

The pile cap of the present invention, which is provided with a projection 20 and a support flange 30 on the pipe member 10, is fitted to the ground 2 after being fitted to a planned position prior to construction of the pile 1.

The pipe member 10 may be inserted into the ground 2 while driving or rotating the upper end or the support flange 30.

When the projecting portion 20 for securing additional support force is formed of a fin having a flat shape extending along the longitudinal direction of the pipe member 10, the pipe cap and the protruding portion of the file cap make it easier to enter the pile cap. It can be done.

Alternatively, when the protrusion 20 is formed of a helical blade arranged in a spiral along the outer circumferential surface of the tube member 10, when the tube member is rotated, the pile cap can be easily inserted into the ground.

The pipe member 10 is inserted into the ground 2 until the bottom surface of the support flange 30 contacts the ground surface.

Subsequently, one end of the pile 1 having an outer diameter or an outer width smaller than the inner diameter or inner width of the pipe member 10 is inserted into the upper end of the pipe member, and the other end of the pile is driven to enter the ground 2 .

The pile 1 is a hollow or solid member, and penetrates through the pipe member 10 of the pile cap to sufficiently penetrate the ground 2 to a desired depth, thereby constituting the pile assembly together with the pile cap.

One end of the pile (1) is formed to decrease in diameter toward the end, it is possible to facilitate the insertion into the tube member 10 and the entry into the ground (2).

In addition, since the file cap is constructed first and then the file is constructed, the file cap can serve as a guide for file construction.

After the incorporation of the pile 1 is completed, a gap between the pipe member 10 and the pile 1 may be poured with a grout or fired, or aggregate such as sand may be filled.

Alternatively, when the clearance between the pipe member 10 and the pile 1 is minute, the pipe member and the pile can be fixed by welding or the like by welding.

As described above, by constructing the pile assembly by fixing the pile cap of the present invention to the upper portion of the pile, the protrusion of the pile cap compacts the ground around the pile near the ground surface and increases the binding force with the surrounding ground to increase the friction coefficient of the pile. At the same time, it can increase the bearing capacity of the pile.

As described above, according to the present invention, it is possible to maximize the lateral force resistance performance near the surface of the ground and to improve the ground support, and to obtain the effect of reinforcing the pile.

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 variations without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present specification and drawings are not intended to limit the technical spirit of the present invention, but to describe the present invention, and the scope of the technical spirit of the present invention is not limited by these embodiments. The scope of protection of the present invention should be interpreted by the following claims, and all technical spirits within the equivalent range should be interpreted as being included in the scope of the present invention.

1: file
2: Ground
10: tube member
20: protrusion
30: support flange

Claims (6)

A hollow tube member having a larger diameter or width than the pile and being inserted into the ground; And
At least one protrusion provided on the outer peripheral surface of the tube member
Including,
The pile cap through which the pile penetrates the pipe member and is constructed on the ground.
According to claim 1,
The protruding portion is one of a plurality of flat fins disposed at right angles to the outer circumferential surface of the pipe member, or at least one spiral blade disposed spirally along the outer circumferential surface of the pipe member. cap.
According to claim 1,
Pile cap, characterized in that it further comprises a support flange provided on the top of the tube member.
According to claim 3,
The support flange is formed of a ring-shaped plate material, the pile cap, characterized in that bonded to the top of the tube member.
According to claim 1,
Pile cap, characterized in that the gap between the pipe member and the pile is poured by firing grout or filled with aggregate.
According to claim 1,
The pipe member and the pile are pile caps, characterized in that fixed by welding.

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