KR101803358B1 - Concrete pile connection apparatus and method - Google Patents

Abstract

The present invention is characterized in that a tapered projection and a groove are formed in a radial shape at the upper end of a lower concrete pile and a lower end portion of an upper concrete pile or a lower and an upper joint plate in which projections and grooves are formed radially, The upper and lower protrusions formed on the head of the lower concrete pile and the upper protrusions formed on the tip of the upper concrete pile are connected to each other by the connecting member so that the upper and lower concrete piles can be easily The present invention relates to a concrete pile connection device and method for connecting concrete piles.

Description

Technical Field [0001] The present invention relates to a concrete pile connection apparatus and method,

The present invention relates to a connecting device for connecting a concrete pile, and more particularly, to a connecting device for connecting a concrete pile, in which a tapered projection and a groove are formed radially on the upper end of a lower concrete pile and a lower end of an upper concrete pile, The radial upper and lower joint plates are bolted to the upper and lower concrete piles so that the centers of the lower and upper concrete piles are easily matched and the lower protrusions formed at the center of the lower concrete pile and the upper concrete pile tip And a connecting device for connecting the upper and lower concrete piles so that the upper and lower piles can be easily connected to each other.

Recently, as urban areas have expanded rapidly, many structures including roads and bridges such as infrastructure facilities and various building structures have been constructed on soft grounds. Since the depth from the ground to the ground is usually very large, the length of the concrete pile should be long in order to transfer the load of the structure to the support layer.

However, since the maximum length of the concrete pile currently produced is only 15 m, it is inevitable to connect the concrete piles having the same diameter to each other when the depth of the support layer is deep as in the soft ground. Was made by welding the head of the lower concrete pile and the metal plate bonded to the tip of the upper concrete pile.

However, the connection method by welding is very influenced by the climatic conditions, and when the wind blows or the rain falls, the welding connection is difficult and the quality is not good, and the welding cost is increased because the welding worker always waits during the construction of the concrete pile There was a problem.

In order to supply the concrete pile smoothly in the field, various types of concrete piles should be manufactured and secured depending on the length of the pile and whether or not the pile is connected to the concrete pile. Therefore, there is a problem that a lot of cost is put into inventory management of the concrete pile.

In order to solve the above problems, a joining device of a concrete pile has recently been registered in Korean Patent Registration No. 10-1207194.

The prior art patent discloses that upper and lower concrete piles are connected to each other by using a joint member in which upper and lower circular plates are fixed to upper and lower ends of an inner ring and a vertical reinforcing plate is fixed between the upper and lower circular plates, The bottom plate of the member is placed on the lower concrete pile so that the head of the lower disk and the lower concrete pile are fastened by bolts and the upper concrete pile is placed on the upper disk and the tip of the upper disk and the upper concrete pile are fastened with bolts And then the coupling member is surrounded by the outer ring.

However, when the lower and upper plates of the joint members are bolted to the pile head of the lower concrete pile and the pile head of the upper concrete pile, the work space between the upper and lower disks is narrow and high-speed power tools are used It is impossible to fasten the bolts, so that the work efficiency is very low and it is also difficult to firmly fix the upper and lower discs and the upper and lower concrete piles with the bolts.

In addition, when placing the upper concrete pile on the upper plate, it is difficult to position the PC nut formed on the upper concrete pile and the joint hole penetrating through the upper circular plate on the same line, and the PC nut of the upper concrete pile, The bolts must be fastened from the lower part of the upper plate to the upper part of the upper plate, so that the work efficiency is lowered and the working time is increased.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and it is an object of the present invention to provide a pile- The present invention also provides a method and apparatus for connecting a pile of a concrete pile, which can easily match the center of a pile of an upper and lower concrete.

Another object of the present invention is to provide a concrete pile connection device for connecting upper and lower concrete piles by connecting a connection member to a connection hole formed between a lower projection of a lower concrete pile having a center and an upper projection of an upper concrete pile And a method.

It is still another object of the present invention to provide a pile pile having a lower pile of lower concrete pile and an upper pile of upper pile, The present invention also provides a method and apparatus for connecting a concrete pile and an upper concrete pile.

According to the present invention,

A lower joint plate having a tapered lower projection and a lower groove radially formed on an upper surface of the lower concrete pile by being bolted to a head of the lower concrete pile;

An upper joint plate having an upper groove and an upper projection formed in a radial shape on the lower surface and being bolted to the tip of the upper concrete pile, the upper groove having a tapered shape whose side is inclined so as to engage with the lower projection and the lower groove;

A plurality of connection holes formed on one or both sides of the upper protrusion and the lower protrusion coupled to the upper groove of the lower coupling plate and the upper groove of the upper coupling plate,

And a connecting member coupled to the connection hole so as to connect the lower and upper concrete piles while being caught by the lower projection and the upper projection.

According to the present invention,

A lower joint plate having a tapered lower projection and a lower groove radially formed on an upper surface of the upper concrete pile;

Coupling the upper joint plate to the upper end of the upper concrete pile, the upper joint plate having a tapered upper groove and an upper protrusion radially formed on the lower surface of the lower joint plate so as to be engaged with the lower protrusion and the lower groove;

Forming upper and lower protrusions in the lower groove of the lower joint plate and the upper groove of the upper joint plate so that the coupling members are coupled to one side or both sides of the upper protrusions and the lower protrusions, Wow;

And a connecting member is coupled to the connection hole so that the connection member is engaged with the lower projection and the upper projection to connect the lower and upper concrete piles.

According to the present invention, since the lower and upper joint plates, which are bolted to the lower and upper concrete piles, are formed with tapered projections and grooves having side slopes, the centers of the upper and lower concrete piles can be easily matched, It is possible to have an advantage that it can be shortened.

In addition, according to the present invention, by connecting the lower projection of the lower concrete pile having the center and the upper projection of the upper concrete pile to the connecting member, the upper and lower concrete piles are connected to each other, It is possible to have an advantage that the efficiency of the connection work can be improved.

In addition, according to the present invention, any one of the lower protrusion of the lower concrete pile and the upper protrusion of the upper concrete pile while coupling the fastening and fixing member to the connection hole formed between the lower protrusion of the lower concrete pile and the upper protrusion of the upper concrete pile, So that it is possible to maintain the structural performance of the connected pile and improve the efficiency of the pile connection work by a quick operation.

1 is an exploded perspective view of an embodiment of the present invention;
Fig. 2 is a front view of Fig. 1
3 is an exploded perspective view showing a state in which the lower and upper joint plates of the embodiment of the present invention are reinforced by a reinforcing band,
Fig. 4 is a partial sectional view of Fig. 3
5 is an exploded perspective view of another embodiment of the present invention.
Figure 6 is a partial cross-sectional view of Figure 5
7 is an exploded perspective view showing a state in which the lower and upper joint plates of another embodiment of the present invention are reinforced by a reinforcing band,
8 is a partial sectional view of Fig. 7
9 is an exploded perspective view of another embodiment of the present invention
10 is a partial sectional view of Fig. 9
11 is an exploded perspective view showing a state in which the lower and upper joint plates of the other embodiment of the present invention are reinforced by a reinforcing band;
12 is a partial sectional view of Fig. 11
13 to 14 are views showing the end portions of the reinforcing band of the present invention

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings. 1 is an exploded perspective view of an embodiment of the present invention.

The concrete pile connecting apparatus 100 according to the present invention has a structure in which a lower protrusion 111 and a lower groove 112 are radially formed in a tapered shape in which a side is inclined on an upper surface while a bolt S is coupled to a head of a lower concrete pile 10 The upper groove 121 and the upper projection 122 are formed in a radial shape on the lower surface so as to be engaged with the lower projection 111 and the lower groove 112, The upper joint plate 120 is connected to the upper end of the upper concrete pile 20 by bolts S and the upper groove 120 of the lower joint plate 110 and the upper groove 120 of the upper joint pile 120 are connected to each other. A plurality of connection holes 130 are formed on one or both sides of the upper protrusions 122 and the lower protrusions 111 which are coupled to the upper protrusions 121 and the lower protrusions 111, And the upper and lower protrusions 10 and 20 are connected to each other while being engaged with the lower protrusions 111 and the upper protrusions 122, Be constituted by a connection member 140 is coupled to the hole 130, it will be described in more detail.

The lower protrusions 111 and the lower recesses 112 of the lower joint plate 110 and the upper protrusions 122 of the upper joint plate 120 and the upper protrusions 122 of the upper joint plate 120, S ') are formed in multiple stages so that the head of the bolt (S) does not protrude from the upper and lower joint plates (110, 120).

A receiving groove 110 '(120') for receiving a PC nut protruding from the top and bottom of the lower and upper concrete piles 10 and 20 on the lower surface of the lower joint plate 110 and the upper surface of the upper joint plate 120, ').

The connection hole 130 may be a through hole penetrating through a circular or polygonal shape or a screw hole formed on an inner peripheral surface thereof. The connection member 140 may be a rod formed of a circular or polygonal shape or a bolt threaded on the outer peripheral surface.

The connection reinforcing part 150 may further include a connection reinforcing part 150 connecting the lower and upper protrusions 110 and 120. The connection reinforcing part 150 may be formed by joining the upper and lower protrusions 111 and And a protruding engaging groove 153 is formed on an inner circumferential surface of the protruding protrusion 151 so as to surround the reinforcing protrusion 151. The protruding engaging groove 153 is formed in the outer circumferential surface of the connection hole 130, And a reinforcing band 152 through which the through hole 154 passes in a collinear manner.

The end portions of the reinforcing bands 152 may be vertically or slopingly formed so that the through holes 154 penetrate through and oppose each other at a distance of 1/2.

The lower joint plate 110, the lower concrete pile 10, the upper joint plate 120, and the upper concrete pile 20 may be integrally formed.

The construction and construction of the embodiment of the present invention will be described below.

2, a tapered lower protrusion 111 and a lower groove 112 are radially formed on the upper surface of the lower protrusion 111, and the lower protrusion 111 and the lower groove 112 are formed radially on the upper surface of the lower protrusion 111, And the upper protrusion 122 and the upper protrusion 122 are radially formed on the lower surface of the upper protrusion 122. The upper protrusion 122 and the upper protrusion 122 are formed on the lower surface of the upper protrusion 122, The upper joint plate 110 and the lower joint plate 120 are connected to the lower portion of the upper concrete pile 10 and the upper joint plate 120, Respectively. At this time, the through hole S 'passing through the lower and upper joint plates 110 and 120 should be located on the same line as the PC nut (not shown) of the lower and upper concrete piles 10 and 20, It is preferable that receiving grooves 110 'and 120' capable of receiving the ends of the PC nuts (not shown) are formed on the lower surface of the lower joint plate 110 and the upper surface of the upper joint plate 120, respectively.

When the through holes S 'of the lower and upper joint plates 110 and 120 are positioned on the same line as the PC nuts (not shown) of the upper concrete piles 10 and 20, The upper joint plate 110 and the lower joint plate 120 are fixed to the upper concrete pile 10 or 20 by coupling the bolts S to the PC nuts It is preferable that the through holes S 'are formed in multiple stages so that they do not protrude from the upper joint plates 110 and 120 under the head portion of the bolt S.

The upper and lower joint plates 110 and 120 may be integrally formed with the lower and upper concrete piles 10 and 20 when the lower and upper concrete piles 10 and 20 are manufactured.

The upper and lower concrete piles 10 and 20 having the upper and lower joint plates 110 and 120 coupled to the lower concrete pile 10 are inserted into the pile hole for pile connection The upper concrete pile 20 is mounted on the lower concrete pile 10 in a state where the upper concrete pile 20 is lifted by a crane or the like equipment to connect the upper concrete pile 20 to the lower concrete pile 10. [

At this time, the lower joint plate 111 has a tapered lower protrusion 111 and the upper joint plate 120 has a tapered upper groove 121 having a tapered side surface on an upper surface of the lower joint plate 110, And the upper protrusions 122 are formed on the lower protrusion 111 and the upper protrusions 122. The lower protrusion 122 and the upper protrusions 122 are formed on both sides of the lower protrusion 111 and the upper protrusion 122, 10 and the lower joint plate 110 and the bolts S to which the upper concrete pile 20 and the upper joint plate 120 are fixed include the lower projection 111, the lower groove 112, the upper groove 121, The upper and lower protrusions 111 and 122 do not protrude to the outside of the lower and upper coupling plates 110 and 120 while the head of the bolt S is coupled to the through hole S ' Upper and lower grooves 121 and 112, respectively.

When the connection member 140 is coupled to the connection hole 130 formed by coupling the upper and lower protrusions 111 and 122 to the upper and lower grooves 121 and 112, And the upper protrusions 111 and 122 are retained, so that the lower and upper concrete piles 10 and 20 can be connected.

When the connection hole 130 is formed as a circular or polygonal hole, the connection member 140 preferably has a circular or polygonal shape, and the connection hole 130 may be formed by a ring- It is preferable that the connecting member 140 is fastened to the fastening hole by fastening a bolt having a screw thread to the outer circumferential surface thereof.

3 to 4, the lower joint plate 110 and the lower joint plate 110 may be connected to each other by a joint reinforcing part 150, The upper grooves 121 and the upper protrusions 122 of the upper joint plate 120 are coupled to the protrusions 111 and the lower grooves 112. The upper grooves 121 and the upper protrusions 122 of the upper and lower protrusions 111, A reinforcing protrusion 151 protruding in a tapered section along the outer circumferential surface of the upper protrusion 111 and the lower protrusion 111 is formed in a state where the reinforcing protrusion 151 is reinforced, The through hole 154 penetrating through the reinforcing band 152 is required to communicate with the connection hole 130 at the same time that the protrusion coupling groove 153 which is recessed in the inner surface of the band 152 is accommodated.

As shown in FIGS. 13 to 14, the ends of the reinforcing band 152 may be vertically or inclinedly formed, and the reinforcing band 152 may be formed at a distance of one-half, so that the coupling member 140 may be coupled to the through- The reinforcing band 152 is protruded from the outer circumferential surface of the upper concrete pile 10 or 20 by a thickness of the reinforcing band 152 when the lower reinforcing band 152 is coupled to the upper and lower coupling plates 110 and 120 The reinforcing band 152 may be formed so that the diameter of the upper and lower joint plates 110 and 120 is reduced by the thickness of the reinforcing band 152 so that the reinforcing band 152 does not protrude from the outer circumferential surface of the upper concrete pile 10 It is.

The reinforcing band 152 is formed by dividing the reinforcing band 152 into two or more pieces and then the connecting member 140 is coupled to the connecting hole 130 through the through hole 154 to form the reinforcing band 152, The protrusion coupling grooves 153 formed in the inner circumferential surface of the reinforcing band 152 are engaged with the reinforcing protrusions 151 protruding from the outer circumferential surface of the lower and upper coupling plates 110 and 120 while fixing the protrusions 110 and 120, So that the connection state of the lower and upper concrete piles 10 and 20 can be further strengthened.

As shown in FIG. 5, the concrete pile connecting device 100 'of another embodiment of the present invention has a tapered bottom portion that is bolted to the top of the lower concrete pile 10, A lower joint plate 110 is formed in which the projections 111 and the lower grooves 112 are formed in a radial direction and the upper grooves 111 and the upper grooves 112 are tapered in a side- 121 and upper protrusions 122 are radially formed on the lower surface of the upper joint pile 120 and are bolted to the tip of the upper concrete pile 20, An upper protrusion 122 coupled to the upper groove 121 of the upper coupling plate 120 and a connection hole 130 formed to connect the coupling member 140 to the outer peripheral surface of the lower protrusion 111, 154 are made to communicate with each other and the upper joint plates 110, 120 are wrapped and reinforced by the reinforcement bands 152, The upper concrete pegs 10 and 20 are engaged with the through holes 154 and the lower pegs 111 and the upper pegs 122 while being coupled to the through holes 154 and the connection holes 130 penetrating through the reinforcing bands 152, And a connecting member 140 for connecting the connecting member 140. The connecting member 140 will be described in more detail as follows.

The lower protrusions 111 and the lower recesses 112 of the lower joint plate 110 and the upper protrusions 122 of the upper joint plate 120 and the upper protrusions 122 of the upper joint plate 120, S ') are formed in multiple stages so that the head of the bolt (S) does not protrude from the upper and lower joint plates (110, 120).

A receiving groove 110 '(120') for receiving a PC nut protruding from the top and bottom of the lower and upper concrete piles 10 and 20 on the lower surface of the lower joint plate 110 and the upper surface of the upper joint plate 120, ').

The connection hole 130 may be a through hole penetrating through a circular or polygonal shape or a screw hole formed on an inner peripheral surface thereof. The connection member 140 may be a rod formed of a circular or polygonal shape or a bolt threaded on the outer peripheral surface.

The connection reinforcing part 150 is provided with a reinforcing protrusion 151 protruding in a tapered section on the outer peripheral surface of the lower and upper protrusions 111 and 122, And a reinforcing band 152 through which the through hole 154 is passed in the same direction as the connection hole 130 while the protrusion coupling groove 153 is formed on the inner circumferential surface.

The end portions of the reinforcing bands 152 may be vertically or slopingly formed so that the through holes 154 penetrate through and oppose each other at a distance of 1/2.

The lower joint plate 110, the lower concrete pile 10, the upper joint plate 120, and the upper concrete pile 20 may be integrally formed.

The construction and construction of the embodiment of the present invention will be described below.

6, a tapered lower protrusion 111 and a lower groove 112 are radially formed on the upper surface of the upper protrusion 111, and a connection hole 130 is formed on an outer circumferential surface of the lower protrusion 111 A lower joint plate 110 and an upper joint 122 having a tapered upper groove 121 and an upper protrusion 122 formed in a radial shape on the lower surface and having a connection hole 130 formed on the outer circumferential surface of the upper protrusion 122, The lower and upper joint plates 110 and 120 are brought into close contact with the top and bottom ends of the lower and upper concrete piles 10 and 20, respectively. At this time, the through hole S 'passing through the lower and upper joint plates 110 and 120 should be located on the same line as the PC nuts (not shown) of the lower and upper concrete piles 10 and 20, It is preferable that receiving grooves 110 'and 120' capable of receiving the ends of the PC nuts (not shown) are formed on the lower surface of the lower joint plate 110 and the upper surface of the upper joint plate 120, respectively.

When the through holes S 'of the lower and upper joint plates 110 and 120 are positioned on the same line as the PC nuts (not shown) of the upper concrete piles 10 and 20, The lower and upper joint plates 110 and 120 are fixed to the lower and upper concrete piles 10 and 20 by fastening the bolts S to the PC nuts It is preferable that the through hole S 'is formed in a multi-stage so as not to protrude from the upper joint plate 110 or 120 under the head of the bolt S.

The upper and lower joint plates 110 and 120 may be integrally formed with the lower and upper concrete piles 10 and 20 when the lower and upper concrete piles 10 and 20 are manufactured.

The upper and lower concrete piles 10 and 20 having the upper and lower joint plates 110 and 120 coupled to the lower concrete pile 10 are inserted into the pile hole for pile connection The upper concrete pile 20 is mounted on the lower concrete pile 10 in a state where the upper concrete pile 20 is lifted by a crane or the like equipment to connect the upper concrete pile 20 to the lower concrete pile 10. [

At this time, a tapered lower groove 111 is formed on the upper surface of the lower joint plate 110 and a lower groove 112 is formed in a tapered upper groove 121 and the upper protrusions 122 are easily coupled to each other and the bolts S secured to the lower concrete pile 10 and the lower joint plate 110 and the upper concrete pile 20 and the upper joint plate 120 The bolt S is connected to the lower protrusion 111 and the lower groove 112 and the through hole S 'formed at the upper end of the upper protrusion 122 and the upper protrusion 122 at the upper end of the lower protrusion 111, The upper protrusions 111 and 122 are brought into surface contact with the upper and lower grooves 121 and 112,

When the upper groove 121 and the upper protrusion 122 of the upper joint plate 120 are coupled to the lower protrusion 111 and the lower groove 112 of the lower joint plate 110, The reinforcing band 152 of the connecting and reinforcing part 150 may be formed in a manner that the reinforcing band 152 of the lower and upper protrusions 111 and 122 A protrusion engagement groove 153 formed in the inner circumferential surface of the reinforcement band 152 while wrapping the reinforcement protrusion 151 protruding in a tapered section along the outer circumferential surface of the protrusion 151 receives the reinforcement protrusion 151, The through hole 154 should communicate with the connection hole 130.

As shown in FIGS. 13 to 14, the end of the reinforcing band 152 may be vertically or inclined, and the reinforcing band 152 may be formed at a distance of one-half, so that the coupling member 140 may be engaged with the through- The reinforcing band 152 is formed to protrude from the outer circumferential surface of the upper concrete pile 10 or 12 by a thickness of the reinforcing band 152 when the lower and upper joint plates 110 and 120 are coupled to each other. The diameter of the upper joint plates 110 and 120 is reduced by the thickness of the reinforcement band 152 so that the reinforcement band 152 does not protrude from the outer circumferential surface of the upper concrete pile 10 or 20 It is possible.

The reinforcing band 152 is formed by dividing the reinforcing band 152 into two or more pieces and then the connecting member 140 is coupled to the connecting hole 130 through the through hole 154 to form a reinforcing band 152, The protruding engagement groove 153 engaging with the inner circumferential surface of the reinforcing band 152 is engaged with the reinforcing protrusion 151 protruding from the outer circumferential surface of the lower and upper coupling plates 110 and 120 while being fixed to the upper and lower support plates 10 and 20, So that the connection state of the lower and upper concrete piles 10 and 20 can be further strengthened.

When the connection hole 130 is a through hole having a circular or polygonal shape, the connection member 140 preferably has a circular or polygonal shape. The connection hole 140 is preferably formed of a circular or polygonal shape, In the case of a threaded fastener, it is preferable that the connecting member 140 is fastened to the fastening hole by fastening a bolt formed with a thread to the outer circumferential surface thereof.

9, the concrete pile connecting device 100 '' of another embodiment of the present invention is formed by a bolt (S) coupled to a head portion of a lower concrete pile 10, and a tapered A lower joint plate 110 is formed in which the lower projection 111 and the lower groove 112 are radially formed and a bolt S is coupled to a tip end of the upper concrete pile 20, The upper joint 120 and the upper joint 122 are formed such that the upper groove 121 and the upper projection 122 are radially formed on the lower surface of the lower joint 112 to be engaged with the projections 111 and the lower groove 112, A fastening fastening member 170 is provided on one side or both sides of the upper protrusion 122 and the lower protrusion 111 which are coupled to the lower groove 112 of the joint plate 110 and the upper groove 121 of the upper joint plate 120, A coupling hole 160 is formed to be opposite to the coupling hole 160 so as to be coupled with the lower coupling plate 11 The threaded portion 171 of the end portion is fastened and fixed to the fastening hole 180 formed in either the lower protrusion 111 of the upper joint 120 or the upper protrusion 122 of the upper joint 120, And a fastening and fixing member 170 that connects the upper joint plate 120 and the upper joint plate 120. The joint fastening member 170 will be described in more detail as follows.

The lower protrusions 111 and the lower recesses 112 of the lower joint plate 110 and the upper protrusions 122 of the upper joint plate 120 and the upper protrusions 122 of the upper joint plate 120, S ') are formed in multiple stages so that the head of the bolt (S) does not protrude from the upper and lower joint plates (110, 220).

A receiving groove 110 '(120') for receiving a PC nut protruding from the top and bottom of the lower and upper concrete piles 10 and 20 on the lower surface of the lower joint plate 110 and the upper surface of the upper joint plate 120, ').

The connection hole 160 is formed in a cylindrical shape or a tapered shape that is inclined so that the inner side where the fastening hole 180 is formed is narrower than the inlet.

The fastening and fixing member 170 is formed in any one of tapered shapes that are inclined so that the ends where the threads 171 are formed are narrower than the cylindrical or bolt-headed end portions.

Next, the construction and construction of another embodiment of the present invention will be described.

10, a tapered lower protrusion 111 and a lower groove 112 are radially formed on the upper surface of the lower protrusion 111, and a connection hole 160 (not shown) is formed on one side or both sides of the lower protrusion 111, And the upper protrusion 122 and the upper protrusion 122 are radially formed on the lower surface of the upper protrusion 122. The upper protrusion 122 and the upper protrusion 122 are formed on the lower surface of the upper protrusion 122, The upper joint plate 110 and the lower joint plate 120 are connected to the upper portion of the upper concrete pile 10 and the upper joint plate 120, Respectively. At this time, the through hole S 'passing through the lower and upper joint plates 110 and 120 should be located on the same line as the PC nut (not shown) of the lower and upper concrete piles 10 and 20, It is preferable that receiving grooves 110 'and 120' capable of receiving the ends of the PC nuts (not shown) are formed on the lower surface of the lower joint plate 110 and the upper surface of the upper joint plate 120, respectively.

When the through holes S 'of the lower and upper joint plates 110 and 120 are positioned on the same line as the PC nuts (not shown) of the upper concrete piles 10 and 20, The upper joint plate 110 and the lower joint plate 120 are fixed to the upper concrete pile 10 or 20 by coupling the bolts S to the PC nuts It is preferable that the through holes S 'are formed in multiple stages so that they do not protrude from the upper joint plates 110 and 120 under the head portion of the bolt S.

The upper and lower joint plates 110 and 120 may be integrally formed with the lower and upper concrete piles 10 and 20 when the lower and upper concrete piles 10 and 20 are manufactured.

The upper and lower concrete piles 10 and 20 having the upper and lower joint plates 110 and 120 coupled to the lower concrete pile 10 are inserted into the pile hole for pile connection The upper concrete pile 20 may be connected to the lower concrete pile 10 by lifting the upper concrete pile 20 with equipment such as a crane to connect the upper concrete pile 20 to the lower concrete pile 10. [ ).

At this time, the upper joint plate 110 has a tapered lower protrusion 111 and a lower groove 112, which are located on the upper surface of the lower joint plate 110, The upper protrusions 121 and the upper protrusions 122 are easily coupled with each other and the connection holes 160 are formed at one side or both sides of the lower protrusions 111 and the upper protrusions 122 to form meshed connection holes 160, The bolts S to which the concrete pile 10 and the lower joint plate 110 and the upper concrete pile 20 and the upper joint plate 120 are fixed include the lower projection 111, the lower groove 112, and the upper groove 121 Since the bolt S is not projected to the outside of the lower and upper joint plates 110 and 120 while the bolt S is joined to the through hole S 'formed at the upper end of the upper protrusion 122 and the upper protrusion 122 122 are in surface contact with the upper and lower grooves 121, 112.

The fastening fastening member 170 is coupled to the connection hole 160 formed by coupling the upper and lower protrusions 111 and 122 to the upper and lower grooves 121 and 112, A screw thread 171 formed at an end of the fastening and fixing member 170 is inserted into the lower projection 111 of the lower joint plate 110 and the upper projection of the upper joint 120 And the lower and upper concrete piles 10 and 20 are connected to each other by being fastened and fixed to the fastening holes 180 formed in any one of the inside of the upper and lower concrete piles.

The coupling hole 160 is formed in a cylindrical shape or a tapered shape in which the inner side of the coupling hole 180 is narrower than the entrance, and the coupling and fixing member 170 is formed of a threaded 171 are formed to be narrower than the tapered shape.

11 to 12, it is possible to reinforce the connecting state of the lower and upper coupling plates 110 and 120 by the connection reinforcing part 150. This is because the lower coupling plate 110 The upper grooves 121 and the upper protrusions 122 of the upper joint plate 120 are coupled to the protrusions 111 and the lower grooves 112. The upper grooves 121 and the upper protrusions 122 of the upper and lower protrusions 111, A reinforcing protrusion 151 protruding in a tapered section along the outer circumferential surface of the upper protrusion 111 and the lower protrusion 111 in the state where the reinforcing protrusion 151 is formed is reinforced by the reinforcing band 152, The through hole 154 penetrating through the reinforcing band 152 should be in communication with the connection hole 160 at the same time as the protrusion coupling groove 153 which is recessed in the inner surface of the band 152 is accommodated.

As shown in FIGS. 13 to 14, the end of the reinforcing band 152 may be vertically or inclined, and may be formed at a distance of one-half, so that the fastening and fixing member 170 may be engaged with the through- The reinforcing band 152 protrudes from the outer circumferential surface of the upper concrete pile 10 or 20 by a thickness of the reinforcing band 152 when the lower reinforcing band 152 is coupled to the lower and upper joint plates 110 and 120 The diameter of the upper and lower joint plates 110 and 120 is reduced by the thickness of the reinforcement band 152 so that the reinforcement band 152 is not protruded from the outer circumferential surface of the upper concrete pile 10 You can do it.

The reinforcing band 152 is formed by dividing the reinforcing band 152 into two or more pieces and then the fastening and fixing member 170 is coupled to the connection hole 160 through the through hole 154, A screw thread 171 formed on the end of the fastening and fixing member 170 is inserted into the lower projection 111 of the lower joint plate 110 and the upper projection 122 of the upper joint plate 120, The connection state of the lower and upper concrete piles 10 and 20 can be further strengthened by fastening and fixing the lower and upper concrete piles 10 and 20 to the coupling holes 180 formed in any one of the inner side It is.

The coupling hole 160 is formed in a cylindrical shape or a tapered shape in which the inner side of the coupling hole 180 is narrower than the entrance, and the coupling and fixing member 170 is formed of a threaded 171 may be narrower than the tapered shape.

The upper and lower concrete piles 10 and 20 may be connected by connecting the connection member 140 to the connection hole 130 formed by coupling the lower and upper joint plates 110 and 120, The through hole 154 of the reinforcing band I52 and the connection hole 130 are coupled to each other by the connecting member 140 while the upper and lower joint plates 110 and 120 are wrapped with the reinforcement band 152, The concrete piles 10 and 20 may be connected to each other and the coupling and fixing member 170 may be coupled and fastened to the connection hole 160 formed by coupling the lower and upper coupling plates 110 and 120, The through holes 154 of the reinforcing band 152 and the connecting holes 160 may be connected to the piles 10 or 20 while the lower and upper joint plates 110 and 120 are surrounded by the reinforcing bands 152, The fastening and fixing member 170 may be coupled and fastened.

When pulling force is applied to the upper concrete pile 20 after connecting the lower and upper concrete piles 10 and 20 in the above manner, reinforcement due to the pulling force acting on the lower and upper coupling plates 110 and 120 A connecting member 140 fastened to the connecting hole 130 through the through hole 154 penetrating the end of the reinforcing band 152 is attached to the reinforcing band 152 in the circumferential direction of the band 152, And the upper and lower displacements of the end portions of the reinforcing band 152 located on the lower portion of the connecting member 140 due to the circumferential tensile force are suppressed by the upper and lower concrete piles 10 and 20, The connection state of the lower and upper concrete piles 10 and 20 can be firmly maintained because the bonding strength of the reinforcing protrusions 151 by the band 152 is maintained and the tightening and fixing member 170 is made of the lower and upper concrete piles (10) and (20), the outer peripheral surface portion is wide and the inner peripheral surface portion is inclined so as to be narrow, The connection state of the lower and upper concrete piles 10 and 20 can be firmly maintained because it can correspond to the stress resistance generated on the outer circumferential surface of the pile 10 or 20.

Although the present invention has been described in connection with certain exemplary embodiments and drawings, it is to be understood that the phraseology and terminology used herein are for the purpose of description and should not be interpreted to limit the scope of the present invention. It must be interpreted in terms of meaning and concept. Therefore, the embodiments described in the present specification and the configurations shown in the drawings are only examples of the present invention, and not all of the technical ideas of the present invention are described. Therefore, It is to be understood that equivalents and modifications are possible.

100,100 ', 100 ": Concrete pile connection device
110: lower joint plate 111: lower projection
112: lower groove 120: upper joint plate
121: upper groove 122: upper projection
130, 160: connection hole 140: connection member
150:

Claims (19)

delete delete A lower joint plate having bolts joined to the head of the lower concrete pile and having a tapered lower projection and a lower groove radially formed on an upper surface of the lower concrete pile and having a plurality of through holes so as not to protrude from the lower projection;
A tapered upper groove and an upper projection are radially formed on the lower surface of the lower joint plate so as to be engaged with the lower projection and the lower groove of the upper joint pile while being bolted to the upper end of the upper concrete pile, An upper joint plate having a plurality of through holes formed therein;
The upper and lower protrusions are coupled to the lower groove of the lower joint plate and the upper groove of the upper joint plate so that the fastening and fixing members are engaged with one side or both sides of the upper and lower protrusions. A connection hole formed in a tapered shape;
The lower joint plate and the upper joint plate are connected to each other and the thread of the end portion is fastened and fixed to the joint hole formed in one of the inside of the lower protrusion of the lower joint plate and the inside of the upper protrusion of the upper joint plate, And a fastening and fixing member formed in a tapered shape that is inclined so that the threaded end is narrowed.
delete The method of claim 3,
Wherein a receiving groove is formed in the lower surface of the lower joint plate and on the upper surface of the upper joint plate to receive a PC nut protruding from a head portion of the upper and lower concrete piles.
delete delete delete delete delete delete delete The method of claim 3,
Wherein the lower joint plate, the lower concrete pile, the upper joint plate, and the upper concrete pile are integrally formed.
delete delete A lower joint plate having a tapered lower protrusion and a lower groove radially formed on an upper surface thereof and having a plurality of through holes so that the bolt head does not protrude from the lower protrusion and the lower groove, ;
The upper and lower protrusions are radially formed in a tapered shape in which a side surface is sloped to be engaged with a lower protrusion and a lower groove of the lower joint plate. Bolting the formed upper joint plate to the leading end of the upper concrete pile;
The upper protrusions and the lower protrusions are coupled to the lower groove of the lower joint plate and the upper groove of the upper joint plate so that one side or both sides of the upper protrusions and the lower protrusions are opposed to each other by 1/2, Forming a connection hole having a tapered shape inclined so that an inside of the fastening hole is narrowed;
And a fastening fastening member formed in a tapered shape inclined so that an end of the threaded portion is narrower than the bolt head by the connection hole is fastened to the fastening hole formed in any one of the inside of the lower protrusion of the lower joint plate and the inside of the upper protrusion of the upper joint plate And connecting the lower joint plate to the upper joint plate.
delete delete 18. The method of claim 16,
Wherein the lower joint plate and the upper joint plate are formed with receiving grooves for receiving the PC nut projected from the head portion of the lower concrete pile and the upper end portion of the upper concrete pile.

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