KR101043235B1 - A foundation pile reinforcement structure and excution method - Google Patents

Abstract

The present invention relates to the foundation pile head reinforcement and its construction method, the foundation pile head reinforcement work such as steel pipe, PHC, PC, etc. which are constructed on the ground for the construction of various fixed structures such as bridges and building structures It is to make it possible.

The present invention for realizing this, in the head reinforcement is installed in the head which is the upper end side of the foundation pile 50, the screw through hole 11 is formed in the center, the lower plate 10 to form a hemisphere downward; The upper plate 20 is formed with a screw through-hole 21 in the center of the upper hemisphere symmetrical with the lower plate 10, the reinforcing bar 22 is formed so that the lower end of the reinforcing bar 40 can be inserted ); A fastening screw 30 having a predetermined length that is inserted and fastened to penetrate the respective screw through holes 11 and 21; It is coupled to the end of the fastening screw 30 and the pressing nut 35 for pressing the upper plate 20 in order to adjust the distance between the upper plate 20 and the lower plate 10; .

Foundation pile, steel pipe, PHC, tofu, connection, construction

Description

A FOUNDATION PILE REINFORCEMENT STRUCTURE AND EXCUTION METHOD}

The present invention relates to a head pile reinforcement, and more particularly, a foundation file used for reinforcing heads to reinforce upper ends of steel pipe piles, PHC piles, PC piles, RC piles, etc., which are projected to a certain height on the ground. It relates to a head reinforcement structure and its construction method.

In general, all loads of various fixed structures such as bridges and building structures are transferred to the ground through the main body of the structure. In the case of soft ground, such load bearing capacity is weak, so it is necessary to reinforce the foundation when constructing a building structure.

In general, soft ground is a case in which the ground itself cannot withstand the load transmitted from the upper structure or the predicted settlement amount exceeds the allowable value. The soft ground, loose sandy soil, organic soil, etc. belong to this, and the ground composed of such soft clay or organic soil If roads, bridges, buildings, etc. are placed on the ground, the settlement of the shear surface is excessive, the bearing capacity is insufficient, and the safety problem is caused. In recent years, the garbage has become an important environmental problem, B. Measures to be used as the basis of buildings are also being made. In such grounds, excessive settlement and lack of support are expected, so that soft ground treatment measures are required.

Among the countermeasures for stability and settlement problems of structures based on such soft ground, the PILE method, which reaches the support layer of fill load, is used to produce steel pipe pile, PHC pile, PC pile RC pile, etc. It is constructed by the method of type or embedding method such as blow or vibration, and these piles are continuously blown after hitting according to the condition of the ground, and after being hit properly, the pile protruding to the upper part of fat In order to reinforce the ends of the piles, reinforcing the ends of the piles is called tofu clean-up. After arranging and reinforcing these tofus, the reinforcing bars are laid horizontally on the upper part of the pile. It is to reliably support the structure to be built by the pile and concrete poured by pouring concrete.

In this case, the head reinforcement (head reinforcement) of the filed pile is inserted into a disk-shaped support plate at a predetermined depth in the filed pile, and the reinforcing bar is protruded to a predetermined length while the reinforcing bar is inserted or installed therein. Therefore, the head is arranged and reinforcement of the pile while filling and filling concrete with the proper depth of pile, for this purpose various head reinforcement methods and head reinforcement devices have been developed.

However, in performing the work of connecting the reinforcing bar to the steel pipe or the PHC pile head, it requires work such as welding and drilling of the blocking disk plate to prevent the pile head, thus reducing the work efficiency and excessive working time. There was a problem such as being.

The present invention has been proposed to improve the above problems in the prior art, by providing a reinforcement structure that can be easily installed in the blockage of the foundation pile head and reinforcement connection to improve the reinforcement work efficiency of the foundation pile The purpose is to make it possible.

Reinforcement body of the present invention for achieving the above object, the screw hole is formed in the center, and the lower plate forming a hemisphere downward; A top plate having a screw hole formed in the center thereof, the upper plate having a reinforcing bar inserted into the lower end of the reinforcing bar so as to be symmetrical with the bottom plate; A fastening screw fastened to the screw through hole; It is coupled to the end of the fastening screw and pressurizing nut for pressing the upper plate to adjust the gap between the upper plate and the lower plate;

In addition, the upper plate is characterized in that a plurality of concrete inlet grooves are formed at regular intervals along the rim so that the concrete can be introduced into the space between the lower plate.

This invention, the installation of the head reinforcement for the connection between the base pile and the upper base structure can be made quickly and easily exhibits the effect of maximizing the construction efficiency and convenience.

In particular, there is an advantage that can greatly reduce the working time by being able to be made by the elasticity of the upper and lower plates by the pressure action between each other.

In addition, the concrete is filled in the space between the upper plate and the lower plate is integrated between the reinforcement structure and the concrete, it is possible to maintain a more stable construction state.

The head reinforcement of the present invention, regardless of the material of the base file, it can be found that it can be applied to various types and forms of the base file, such as steel pipe file, PHC file, PC file as needed.

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

First, the foundation pile head reinforcement structure according to an embodiment of the present invention will be described with reference to FIGS.

Head reinforcement of the present invention is to be installed on the inner wall surface of the upper end of the foundation pile 50 of the steel pipe or concrete material, as shown in Figure 3, the lower plate 10 to form a hemisphere downward downward and conversely upward Consisting of the upper plate 20 was configured in pairs.

In the center of the lower plate 10 and the upper plate 20, screw through holes 11 and 21 are formed at positions corresponding to each other. The lower plate 10 and the upper plate 20 is preferably made of a metal material having a high elastic force.

In addition, the screw holes (11, 21) is inserted into the fastening screw 30.

In particular, a plurality of reinforcing bar insertion holes 22 are formed in the radial direction at regular intervals so that the bent lower end of the reinforcing bar 40 can be inserted into the upper plate 20.

In addition, the lower plate 10 has a plurality of incision grooves 12 are formed in a radial direction at regular intervals along the rim to facilitate its shape change (expansion / contraction) as shown in FIG. 4.

At the end of the fastening screw 30, the pressure nut 35 pressurizing the upper plate 20 is fastened to adjust the distance between the upper plate 20 and the lower plate 10, thereby fixing the pressing nut 35. By turning in the reverse direction, the pressing force between the upper plate 20 and the lower plate 10 is adjusted as shown in FIGS. 5A and 5B.

On the other hand, as an application example, as shown in Figure 6a and 6b, as shown in Figure 6a and 6b to allow the concrete to be introduced into the inner space formed between the lower plate 10 and a plurality of concrete to facilitate the expansion deformation Inlet groove 23 is preferably formed at regular intervals along the rim.

The head connection construction process of the foundation pile using the present invention head reinforcement having such a structure will be described with reference to the construction process of FIGS. 7A to 7D.

<Step 1>

First, the head reinforcement, in which the lower plate 10 and the upper plate 20 are assembled and fastened by the fastening screw 30, is inserted into the upper end of the foundation pile 50 as shown in FIG.

That is, at this time, since the radius of the combination of the lower plate 10 and the upper plate 20 is smaller than the inner circumference radius of the foundation pile 50, it can be easily inserted into the foundation pile 50.

<Step 2>

When the construction position is determined as described above, the inserted head reinforcement is expanded and deformed to achieve a state in which a close coupling is made to the inner wall surface of the foundation pile 50.

That is, in this case, as shown in FIGS. 7B and 3, when the pressure nut 35 which is fastened to the distal end of the fastening screw 30 is gradually turned, the pressure nut 35 is gradually lowered and the upper plate 20 is lowered. The pressure is gradually increased, and thus the upper plate 20 and the lower plate 10 are gradually expanded in radius by the pressing force acting on each other, and thus the compression coupling is made to the inner circumferential surface of the foundation pile 50.

<Step 3>

Thus, the head reinforcement of the present invention by inserting the reinforcing bar 40 into the reinforcing hole 22 of the upper plate 20 in the state that the coupling is fixed to the base pile 50 head as shown in Figure 7c As the 40 is upwardly upward, the foundation pile 50 is exposed to the upper state.

<Step 4>

When the construction of the reinforcing bar 40 is completed, the upper plate 20 and lower plate 10 including the reinforcing bar 40 as shown in FIG. The unitary structure is achieved.

In particular, it can be seen that the added concrete mortar is filled in the space between the lower plate 10 through the concrete inlet groove 23 formed in the upper plate 20 can be maintained a more stable construction state.

Therefore, by using the expansion force by the pressing force between the pair of the lower plate 10 and the upper plate 20 is to be combined to the foundation pile head can be made more quickly and easily.

On the other hand, Figure 8 shows the structure of the lower plate according to another embodiment of the present invention in a plan view.

That is, as shown, the screw hole 11 and the cutting groove 12 are formed in the form of a toothed portion 13 of continuous concave-convex shape along the peripheral edge of the lower plate 10 is formed.

When such a structure is achieved, slippage with the inner wall surface of the foundation pile 50 can be minimized by the tooth portion 13 which makes direct contact with the inner wall surface of the foundation pile 50 during the expansion and deformation of the lower plate 10. It can be designed so that a more stable coupling state can be maintained.

In addition, although a specific embodiment of the present invention has been described and illustrated above, it is obvious that the basic pile head reinforcement structure of the present invention may be variously modified and implemented by those skilled in the art.

For example, although some embodiments of the upper plate 20 or the lower plate 10 are shown in the above embodiment, the shape of such a structure may be manufactured in other shapes as necessary.

It should be understood, however, that such modified embodiments are not to be understood individually from the spirit and scope of the invention, and such modified embodiments are intended to be included within the scope of the appended claims.

1 is an exploded perspective view of the head reinforcement of the present invention.

Figure 2 is a perspective view of the combination of the head reinforcement of the present invention.

Figure 3 is a partial cutaway view of the foundation pile mounting state of the head reinforcement of the present invention.

Figure 4 is a plan view of the bottom plate of the head reinforcement of the present invention.

5 shows a modified state of the head reinforcement of the present invention,

5a is a state diagram during primary assembly.

5b is a state diagram at the time of pressure deformation.

6 is a plan view of the top plate of various forms according to the application of the present invention.

7 is a cross-sectional view showing the construction process of the head reinforcement of the present invention,

7a is a state diagram at the top of the foundation file.

7b is a position fixation state according to the pressurization.

7c is a reinforcement state diagram.

7d is a state of Colcrete mortar.

8 is a plan view of the bottom plate according to another embodiment of the present invention.

<Explanation of symbols for main parts of the drawings>

10: lower plate 11, 21: screw hole

12: incision groove 13: tooth part

20: top plate 22: rebar insertion hole

23: concrete inlet groove 30: fastening screw

35: pressurized nut 40: rebar

50: Foundation file 51: uneven groove

52: PC steel wire 60: concrete

Claims (5)

In the head reinforcement is installed on the head which is the upper side of the foundation pile 50, Screw hole 11 is formed in the center, the lower plate 10 forming a hemisphere downward; The upper plate 20 is formed with a screw through-hole 21 in the center of the upper hemisphere symmetrical with the lower plate 10, the reinforcing bar 22 is formed so that the lower end of the reinforcing bar 40 can be inserted ); A fastening screw 30 having a predetermined length that is inserted and fastened to penetrate the respective screw through holes 11 and 21; A pressure nut 35 coupled to an end of the fastening screw 30 and pressurizing the upper plate 20 to adjust a gap between the upper plate 20 and the lower plate 10; Foundation pile head reinforcement, characterized in that the configuration comprising a. The method according to claim 1, The base plate head reinforcement is characterized in that the lower plate 10 is formed in a radial direction at a predetermined interval a plurality of incision grooves 12 along the rim to facilitate its shape change. The method according to claim 1, The upper plate 20 has a plurality of concrete inlet grooves 23 are formed at regular intervals along the rim so that concrete can be easily introduced into the space between the lower plate 10 and easy expansion and deformation. Foundation pile head reinforcement, characterized in that. The method according to claim 1, The lower plate 10, the foundation pile head reinforcement, characterized in that the toothed portion 13 of the concave-convex shape is formed along the rim. While forming a hemispherical cross-sectional structure to form a pair with each other, assembling the lower plate 10 and the upper plate 20 in which screw through holes 11 and 21 are formed in the center, respectively, with a fastening screw 30 and a pressure nut 35. Positioning the head reinforcement in the fastened state on the upper end of the foundation pile; Rotating the pressing nut 35 to gradually apply pressing force to the upper plate 20 so that the lower plate 10 and the upper plate 20 are deformed by the pressing force between the lower plate 10 and pressed against the inner wall surface of the foundation pile; Inserting reinforcing bar 40 into the reinforcing bar insertion hole 22 formed in the upper plate 20 to reinforce upwards; Placing concrete on the upper portion of the foundation pile so that the poured concrete is filled in the space between the lower plate 10 through the concrete inlet groove 23 formed in the upper plate 20 so as to be integrally cured; Foundation pile head reinforcement construction method comprising a.

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