KR100674264B1 - A pile for reinforcing soft ground - Google Patents

Abstract

A base pile for reinforcing a soft ground is provided to construct the pile easily by inserting a pile body to a pile hole without interference, and to reinforce the soft ground efficiently by increasing friction between the pile body and mortar. A base pile(100) for reinforcing a soft ground(1) includes a pile body inserted to a pile hole(2) of the ground, mortar(20) charged in the pile hole through the pile body and cured, and a blade sill(30) formed in an outer periphery of the pile body to restrict the pile body from being displaced by supporting the pile body. A hollow is formed in the pile body and filled with mortar. A mortar injection hole(12) is formed in an upper part of the pile body to inject mortar, and a mortar discharge hole(13) is communicated and formed in a circumference of the pile body. The mortar discharge hole is wound by a counter flow prevention band(14) to prevent counter flow of mortar discharged through the mortar discharge hole out of the pile body.

Description

Foundation pile for soft ground reinforcement {A PILE FOR REINFORCING SOFT GROUND}

1 is a perspective view of a foundation pile for soft ground reinforcement according to the first embodiment of the present invention.

Figure 2 is a longitudinal cross-sectional view of the installation state of the foundation pile for soft ground reinforcement according to the first embodiment of the present invention.

Figure 3 and Figure 4 is a longitudinal sectional view showing an operating state of the foundation pile for soft ground reinforcement according to the second embodiment of the present invention, respectively.

<Description of Symbols for Main Parts of Drawings>

1: underground, 2: pile ball

10: pile body, 11: sharpening

12: mortar injection hole, 13: mortar discharge hole

14: backflow prevention band, 15: stopper

20: mortar, 30: wing jaw

40: wing piece,

The present invention relates to a foundation pile for reinforcing soft ground, and more particularly, to increase the reinforcement by the foundation pile constructed in the soft ground to reinforce the soft ground, and to prevent the drawing of the foundation pile, The present invention relates to a foundation foundation for soft ground reinforcement, which enables construction of foundation piles without excessively increasing the pile ball.

In the past, various pile construction methods have been developed to effectively transfer the loads of ground structures to the ground floor, and have been utilized at construction sites. The construction has been mainly adopted.

For example, the above-mentioned field drilling pile construction is to form a pile hole by drilling the ground of the corresponding position to the required depth, and after placing the core material together with the steel pipe in the drilled pile hole, mortar as an injection hose in the pile hole There is a technique of installing foundation piles on the ground layer by injecting (grout liquid).

It is true that the foundation pile constructed as described above has an advantage of efficiently bearing the load of the ground structure by maintaining an appropriate friction force with the surrounding ground.

However, the soft ground is saturated with a large amount of water in the viscous soil forming the soft ground, so if the load is applied due to the weak bearing capacity and the strength of the ground, the structure is destroyed during shearing, so the structure cannot be installed. In addition, if the ground surface is settled to some extent, even if the structure can be installed, the large scale of consolidation settlement will continue for a long time due to the characteristics of the soft ground. Since the ground piles are loose or soft ground layers such as earth and sand, it is difficult to maintain the proper pile friction with the surrounding ground.

That is, according to the foundation pile for soft ground reinforcement according to the prior art, because the outer peripheral surface of the foundation pile is straight, the friction between the foundation pile and mortar is weak, so that the soft ground can not be effectively reinforced through the foundation pile.

The present invention is to solve the above-mentioned problems, to provide a foundation for reinforcing soft ground to effectively reinforce the soft ground by increasing the friction between the pile and mortar embedded in the ground for the reinforcement of the soft ground. There is a purpose.

The foundation pile for soft ground reinforcement according to the present invention provided to achieve the above object is to install the pile body by being piled in the pile body and the pile body via the inside of the pile body, and piled into the pile hole in the ground; Mortar and, characterized in that consisting of the wing portion which is installed to open to the circumference of the pile body to resist the drawing of the pile body.

The features and advantages of the present invention will become more apparent from the following detailed description based on the accompanying drawings. Prior to this, the terms or words used in the present specification and claims are defined in the technical spirit of the present invention on the basis of the principle that the inventor can appropriately define the concept of the term in order to explain his invention in the best way. It must be interpreted to mean meanings and concepts.

<Example 1>

As shown in Figures 1 and 2, the foundation pile 100 for deductive ground reinforcement according to the present embodiment, the pile body 10 is inserted into the pile hole 2 (shown in Figure 2) of the ground (1) And, the mortar 20 is filled and cured in the pile ball (2) via the interior of the pile body 10, and formed on the outer peripheral surface of the pile body 10 so that the pile body 10 is not drawn out It consists of a wing jaw 30 to support.

The stake body 10 has a long shape and a sharp portion 11 is formed at the lower end thereof, thereby maintaining a state of being embedded in the ground 1 through the sharp portion 11.

The pile body 10 is hollow having a space therein so that the mortar 20 may be filled in the pile hole 2 after passing through the inside thereof, and a mortar injection hole is formed at the upper side for the injection of the mortar 20. 12) is formed and the mortar discharge hole 13 is formed in the circumferential portion and communicate with the outside. The mortar discharge hole 13 is formed in multiple stages at equal intervals so that the entire area of the pile body 10 in the longitudinal direction can be firmly installed in the pile hole 2. At this time, since the mortar injection hole 12 is disposed in the upper portion of the pile body 10, when the mortar discharge holes 13 have the same diameter, mortar toward the mortar discharge hole 13 far from the pile body 10 The injection amount of the 20 may be small, and the mortar discharge hole 13 may be farther away from the mortar injection hole 12 so that the mortar 20 may be uniformly discharged through the mortar discharge hole 13 of all heights. Its diameter gradually increases.

The mortar discharge hole 13 is wound around the mortar discharge hole 13 so that the mortar 20 is discharged to the outside from the inside of the pile body 10 through the mortar discharge hole 13.

The wing jaw 30 is formed to protrude on the outer circumferential surface of the pile body 10 so that the pile body 10 is not drawn out of the pile hole (2).

The action of the foundation pile for soft ground reinforcement according to this embodiment configured as described above is as follows.

When building on the soft ground, drill a large number of pile holes (2) (the number of pile holes (2) depends on the ground state) for reinforcement of the soft ground, and each pile hole (2) by crane or manual work, etc. After inserting the foundation pile 100 according to the present embodiment, the sharp part 11 is driven into the bottom of the pile hole 2 to establish the foundation pile 100 inside the pile hole 2.

Subsequently, a mortar injector (not shown) is connected to the mortar injector 2 to inject the mortar 20 into the pile body 10. After the mortar 20 is filled in the pile body 10, the mortar 20 passes through the mortar discharge holes 13 by the injection pressure and is discharged to the outside of the pile body 10 (between the pile body 10 and the pile hole 2). As a result it is filled in the pile hole (2). Since the diameter of the mortar discharge hole 13 increases as the distance from the mortar inlet 12 to the mortar injection hole 12 increases, a uniform amount of mortar 20 is discharged through all the mortar discharge holes 13 to pile holes. The same amount of mortar 20 is filled in all areas of (2), and the mortar discharge hole 13 is blocked by the backflow prevention band 14, but the backflow prevention band 14 by the mortar 20 injection pressure ) Elastic deformation and mortar 20 is naturally discharged to the outside of the pile body (10).

When the injection of the mortar 20 is completed (the mortar 20 is no longer filled when the mortar 20 overflows through the inlet of the pile hole 2), the injection of the mortar 20 is stopped, and curing is completed. Wait for When the injection of the mortar 20 is stopped, the non-return band 14 is returned to its original state by its elastic force so that the mortar discharge hole 13 is blocked so that the mortar 20 does not flow back into the pile body 10.

That is, the mortar 20 is not filled only on the outside of the pile body 10, but is filled inside and outside the pile body 10 are connected to each other (mortar mortar 20 is filled in the mortar discharge hole (12) Mortars 20 inside and outside the pile body 10 are connected to each other) to reinforce the soft ground by the foundation pile 100, and even when an external force is applied to the foundation pile through the wing jaws 30 100 is not drawn from the pile ball (2).

<Example 2>

3 and 4, the foundation pile 100 for soft ground reinforcement according to the present embodiment, the wing jaw 30 of the first embodiment is replaced by the wing piece 40, the foundation pile 100 When it is inserted into the pile hole (2), so that the wing piece 40 does not protrude from the pile body (10) so as not to interfere with the pile hole (2) has a feature that generates a brace force when necessary.

The wing piece 40 is closed on the mortar discharge hole 13 while one side (the upper end of the drawing reference) is coupled to the pile 41 by the hinge 41 and the free end (the lower reference of the drawing) rotates, thereby injecting the mortar 20. When the free end is forcibly pushed by the mortar injection pressure during mortar 20 is discharged from the pile body 10 to provide a holding force of the pile body (10).

The stopper 15 is formed on the ceiling side of the mortar discharge hole 13 of the pile body 10 so that the wing piece 40 does not open at a predetermined angle or more due to the function of the wing piece 40. The stopper 15 protrudes in the rotational trajectory of the wing piece 40 to restrain the rotation of the wing piece 40.

The action by the foundation pile for soft ground reinforcement according to the present embodiment is the same as in Example 1 described above, only the novel action will be described.

According to the foundation pile according to the present embodiment, the blade piece 40 is inserted into the mortar discharge hole 13, so that when the foundation pile 100 is inserted does not protrude from the pile body 10, the diameter of the pile hole (2) It does not interfere with the pile ball (2) even if it is not excessively large, and after inserting the pile body (10) into the pile hole (2), when the mortar 20 is injected into the wing piece by the injection pressure of the mortar (20) 40 is opened to the pile hole (2) by the rotation so that the mortar 20 is naturally discharged from the inside of the pile body (20). When the wing piece 40 is opened and in contact with the stopper 15, the wing piece 40 is no longer opened and maintains the open state.

As described above, according to the foundation pile for soft ground reinforcement according to the present invention, as the mortar is filled in and out of the foundation pile, the friction force between the foundation pile and the mortar is increased, the soft ground can be reinforced by this friction force, In addition, the wing portion (wing jaw, wing piece) is to increase the friction between the pile body and the mortar is more able to effectively reinforce the soft ground.

And, the wing piece is protruded from the pile body only when necessary, even if the diameter of the pile hole is not excessively large, so that the pile body can be inserted into the pile hole without interference, such as excellent workability.

While the invention has been described and illustrated in connection with a preferred embodiment for illustrating the principles of the invention, the invention is not limited to the configuration and operation as such is shown and described. Rather, it will be apparent to those skilled in the art that many changes and modifications to the present invention are possible without departing from the spirit and scope of the appended claims. Accordingly, all such suitable changes and modifications and equivalents should be considered to be within the scope of the present invention.

Claims (3)

delete A peg body which is hollow inside and is provided with a sharp part at the lower end and is inserted into the pile hole drilled in the soft ground and installed in the pile hole by mortar cured between the pile hole; A plurality of mortar discharge holes formed at equal intervals along the circumferential direction while communicating with the pile body; In the foundation pile for soft ground reinforcement consisting of a backflow prevention band wound around the outside of the mortar discharge hole to block the mortar from flowing back into the pile body, It is disposed in the circumferential direction and the multistage at the circumferential surface of the pile body and is disposed in the mortar that is cured in the pile hole through the mortar discharge hole is to include a wing for generating a holding force so that the pile body is not drawn out Foundation foundation for soft ground reinforcement, characterized in that configured. delete

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