KR100692082B1 - Divices for PHC Pile Connetion - Google Patents

Abstract

The present invention relates to a connecting device of the PHC pile, and more particularly, to a connecting device of the PHC pile that can be quickly and structurally secure joint because no welding or other special equipment is required at the connecting portion. The conventional technique requires a long time by welding the joint shoe at the bottom of the upper PHC pile and the joint cap at the top of the lower PHC pile when the PHC pile is connected and used in the field. There was a problem affected a lot.

An object of the present invention is to provide a PHC pile connecting device that does not require welding in connecting the PHC pile and can have a fast and reliable connection performance with a very simple operation.

The present invention in the PHC file connecting device for vertically connecting the PHC file, is formed in a ring shape is connected to the lower end of the upper pile on the top, the joint shoe 110 formed with the L-shaped locking groove 113 on the outer peripheral surface Wow; A joint cap 110 ′ formed horizontally symmetric with the joint shoe 110 and connected to an upper end of a lower pile at a lower end thereof, and having a L-shaped locking groove 113 ′ formed at an outer circumferential surface thereof; And a ring-shaped connection ring 101, the lower end of the joint shoe 110 is inserted into the upper end, and the upper end of the joint cap 110 ′ is inserted into the lower end, and the inner peripheral surface of the connection ring 101 is horizontal. At least two pairs of symmetrically formed first and second locking protrusions 102 and 102 'are formed, and the locking grooves 113 of the joint shoe 110 are fitted to the first locking protrusion 102 by fit. The second locking protrusion 102 ′ includes a connector 100 to which the locking groove 113 ′ of the joint cap 110 ′ is fit-fitted, and the connection ring 101 of the connector 100. At least one connector turning hole 103 is formed to facilitate the rotation of the connector 100.

Through the present invention, the PHC pile can be quickly connected in the field by a very simple operation, and the size and number of the locking protrusions can be adjusted to ensure the required bending moment strength, as well as placing a small slope section on the locking protrusion or the locking jaw. By compressing the PHC pile can secure the transfer of energy at the time of the strike, there is an advantage that can significantly improve the structural performance and construction.

PHC pile, non-welded, pile joint, joint

Description

PHC File Concatenation {Divices for PHC Pile Connetion}

1 is a perspective view of a portion of a conventional conventional joint shoe

Figure 2 is a perspective view showing the configuration of the connection device according to the present invention

Figure 3a is a cross-sectional view taken along the line AA 'of Figure 2

Figure 3b is a plan view of a joint shoe according to the present invention

Figure 4 is a state diagram used in the connection device according to the present invention

* Explanation of symbols for main parts of the drawings

100: connector 101: connection ring

102, 102 ': first and second locking projections 103: connector hole

104, 104 ': Relative rotation prevention hole 105: Relative rotation prevention bar

113, 113 ': Hanging groove 114, 114': Hanging jaw

116, 116 ': loosening prevention hole 120: connector rotation mechanism

121: connector turning protrusion 122: connector winding

123: handle

The present invention relates to a connection device of the PHC pile (Pretensioned spun High strength Concrete Pile) using high-strength concrete, and more particularly to a connection device of the PHC pile that can be connected at high speed without the need for welding or bolting.

PHC pile is a hollow high-strength concrete pile made of centrifugal force and can be pre-stressed to pre-stressed type construction. It is capable of type construction using hammers, and has excellent bending resistance and high resistance to both vertical and horizontal forces. . By the way, PHC pile is produced in the length of 10m ~ 15m for the convenience of manufacture and transportation, and when the pile construction is required to a depth of more than that should be connected in the field.

The most commonly used PHC pile connection method is welding. After the lower pile is constructed, the upper pile is lifted by a crane to weld the joint shoe covering the tip of the upper pile and the contact portion of the joint cap covering the head of the lower pile.

1 shows a conventional joint shoe 10 required for the connection method. The joint shoe 10 is attached to the support disc 1 around the donut-shaped support disc 1 blocking the end of the hollow concrete pile and the reinforcing band 2 and the hollow part 5 surrounding the concrete part of the end. Consisting of an induction band 4 in the form of a ring. PC support wire (3) is drilled in the support disc 1, the PC steel wire used to introduce the prestress is fixed to this part. In addition, the periphery of the plate supporting disc 1 has a portion inclined to allow partial groove welding. The joint cap of the upper end of the lower pile of the PHC pile connected by welding has no induction band around the hollow shoe or the symmetrical shape with the joint shoe 10. The two files are sorted correctly.

The connection by welding has the advantage of being able to make a definite joint and paying a lot of material cost if attention is paid to quality control. However, the length of time required to join the pile is so long that it is comparable to the cost of the material, which reduces the direct cost of the crane holding the upper pile, the labor cost of the welder who should always wait, and the indirect cost of the longer construction period. A lot of money is wasted. In addition, it is influenced by the skill of the welder and can not work at all in bad weather such as rain or strong wind.

Various non-welded connection methods have been invented to solve the drawbacks of such welded connections.

Korean Patent Application No. 10-2002-0057091 (PHC pile joint method using a pile connector with increased binding force) proposes a wedge-nasal joint method which is improved in the wedge joint method and the screw joint method commercially available in Japan. . The pile connector according to the above technology is formed in a circular arc shape of three pieces, and a bracket having screw holes at both ends is attached to the inner upper part and a screw hole is installed at the lower part with a trapezoidal protrusion at the upper part. The annular projection is gripped by a triangular projection formed in the wedge-shaped groove of the upper pile joint shoe, the lower portion is inserted into a trapezoidal groove formed in the lower pile joint cap, and then the screw hole formed in the lower pile joint cap It will be connected by fastening the screw. After that, the screws are also fastened to the bracket screw holes formed in the three-piece connector to fix the connector of each piece. However, this method requires the formation of a large number of threaded holes in the joint shoe and the joint cap, and also requires several bolting operations and fine positioning of the upper pile suspended from the crane to align the bolt holes.

In Korean Patent Application No. 10-2003-0041196 (Pile connection device for the joint of concrete pile), the upper pile joint shoe and the lower pile joint cap are manufactured identically, and the upper pile joint shoe and the lower pile joint cap are not made with bolt holes. As a needless method, it is proposed to make another type of connector that constrains in the direction of the pile while connecting arcuate connectors and bolts the two types of connectors together. This way, you don't have to adjust the file position to fit the bolt holes. However, this method also requires several bolting operations and increases the number of connectors, which increases the manufacturing cost and the risk of breakage.

In Korean Patent Application No. 10-2004-0115621 (the bolted joint shoe of P.C pile), the nut-type coupling shaft penetrates into the hollow part of the joint shoe and the joint cap and protrudes vertically, and the female thread part The upper and lower piles are connected by using a male screw part having a stop pitch formed at an intermediate point. In addition, the spacing of the two piles generated by the stop pitch is filled by inserting the doughnut-shaped cushioning material in the middle. This method is simple in connection but the upper pile suspended from the crane must be rotated many times using manpower. Also, since it connects only the central part, the transfer of moment is not sure enough, so the pile can not function as a horizontal pile. . In addition, there was a problem in that a large cost for the production of a large female screw and a large male screw is specially manufactured.

An object of the present invention is to provide a method for connecting a PHC file which allows quick connection operation to be performed in a very simple operation while maintaining structural performance in connecting a PHC file.

The present invention in the PHC file connecting device for vertically connecting the PHC file, is formed in a ring shape is connected to the lower end of the upper pile on the top, the joint shoe 110 formed with the L-shaped locking groove 113 on the outer peripheral surface Wow; A joint cap 110 ′ formed horizontally symmetric with the joint shoe 110 and connected to an upper end of a lower pile at a lower end thereof, and having a L-shaped locking groove 113 ′ formed at an outer circumferential surface thereof; And a ring-shaped connection ring 101, the lower end of the joint shoe 110 is inserted into the upper end, and the upper end of the joint cap 110 ′ is inserted into the lower end, and the inner peripheral surface of the connection ring 101 is horizontal. At least two pairs of symmetrically formed first and second locking protrusions 102 and 102 'are formed, and the locking grooves 113 of the joint shoe 110 are fitted to the first locking protrusion 102 by fit. The second locking protrusion 102 ′ includes a connector 100 to which the locking groove 113 ′ of the joint cap 110 ′ is fit-fitted, and the connection ring 101 of the connector 100. At least one connector turning hole 103 is formed to facilitate the rotation of the connector 100.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. The same reference numerals are used for the same components as the above-mentioned prior art.

Figure 2 is a perspective view showing the configuration of the connection device according to the invention, Figure 3a is a cross-sectional view taken along the line A-A 'of Figure 2, Figure 3b is a plan view of a joint shoe according to the invention, Figure 4 is a connection according to the invention It shows the state of use of the device.
As shown in the drawings, the PHC pile connection device proposed in the present invention is a joint shoe 110 connected to the lower end of the upper pile, and formed in a horizontal symmetrical form with the joint shoe 110 is connected to the top of the PHC pile joint cap 110 ', and a ring-shaped connector 100 interconnecting the joint shoe 110 and the joint cap 110'. The joint shoe 110 and the joint cap 110 'are respectively inserted into the upper and lower ends of the connector 100, and then the coupling is completed by rotating the connector 100 at an angle in the inserted state.

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The connector 100 is formed of a ring-shaped connection ring 101, the inner diameter of the connection ring 101 is a joint shoe 110 and the joint cap 110 'portion to be inserted into the connection ring 101. That is, the inner reinforcing band 111 formed at the lower end of the joint shoe 110 and the inner diameter of the inner reinforcing band 111 'formed at the upper end of the joint cap 110' is the same as or slightly larger. And the height of the connection ring 101 is the inside of the reinforcing bands 111 and 111 of the joint shoe 110 and the portion of the joint cap 110 ′ (the joint shoe 110 and the joint cap 110 ′ of FIG. 2). ') Height).

On the inner circumferential surface of the connection ring 101, the first locking protrusion 102 coupled to the joint shoe 110 and the second locking protrusion 102 'coupled to the joint cap 110' are horizontally symmetrical to at least two. More than one pair is formed. At this time, in a more preferred embodiment, it is preferable to form three or more pairs of the first and second locking protrusions 102 and 102 ', and the first and second locking protrusions 102 and 102' are shear strengths. It is preferable that a sufficient contact area is attached to the connection ring 101 to exhibit the required bending strength at the pile joint. In this case, the first and second locking protrusions 102 and 102 'may be welded to the connection ring 101, or may be used by tightening bolts to the connection ring 101 having a hole to use a bolt head. It may be formed in various ways, such as attaching the locking projection to the connection ring using a bolt.

In addition, the connection ring 101 is formed with a connector turning hole 103 through a perforated outer surface or through the inner and outer sides. The connector turning hole 103 is used to turn the connector 100 and is also used to fix the connector 100 after completion of the rotation of the connector 100.

The joint shoe 110 used in the present invention is divided into an inner reinforcing band 111 formed at a lower end of the upper reinforcing band 112 and a diameter smaller than the outer reinforcing band 112, and the inner reinforcing band ( On the outer circumferential surface of the 111, a locking groove 113 formed in a L shape is formed. Accordingly, the inner reinforcing band 111 is inserted into the connector 100 and at the same time the first locking protrusion 102 is inserted into the locking groove 113, and as the rotating connector 100 is rotated, 1 The locking projection 102 is not caught by the locking projection 114 of the locking groove 113.

On the other hand, the outer diameter of the outer reinforcing band 112 is preferably made to be the same as the outer diameter of the connector 100 so that there is no protrusion on the connected pile. The number and positions of the locking grooves 113 are formed corresponding to the number and positions of the first locking protrusions 102 formed on the connector 100.

The joint cap 110 ′ of the lower pile is manufactured to be horizontally symmetric with the joint shoe 110 and inserted into the lower portion of the connector 100. In this case, the joint cap 110 'is divided into an inner reinforcement band 111' formed at an upper end of the lower outer reinforcement band 112 'and a diameter smaller than the outer reinforcement band 112', and the inner reinforcement band. On the outer circumferential surface of the 111 ', a locking groove 113' is formed. Accordingly, the inner reinforcing band 111 ′ is inserted into the connector 100 and at the same time the second locking protrusion 102 ′ is inserted into the locking groove 113 ′, thereby rotating the connector 100. Accordingly, the second locking protrusion 102 ′ is not caught by the locking jaw 114 ′ of the locking groove 113 ′.

The donut-shaped support discs 1 and 1 'are formed on the end surfaces of the joint shoe 110 and the joint cap 110', respectively, and the relative rotation preventing holes 104 are formed in the support discs 1 and 1 '. 104 ') is formed. This is, when inserting the connector 100 to the joint cap (110 ') connected to the lower pile and insert the joint shoe 110 connected to the upper pile thereon when rotating the connector 100, the joint shoe 110 Is to prevent the rotating together by the rotation of the connector 100.

That is, one side of the relative anti-rotation bar 105 is inserted into the relative anti-rotation bar 104 'of the joint cap 110' to which the lower file is connected, and the other side of the relative anti-rotation bar 105 is a joint to which the upper file is connected. When inserted into the relative rotation preventing hole (104 in Fig. 3b) of the shoe 110, even if the connector 100 is rotated, the relative rotation between the upper pile and the lower pile can be prevented. In this case, in the case of the type-type construction, the lower file is entered into the ground, so even if the connector 100 is rotated, the upper file does not rotate, so that one worker can easily connect the work.

In addition, the joint shoe 110 and the inner reinforcing bands 111 and 111 'of the joint cap 110' are coupled to the connector 100 by rotation, and then prevented from loosening at a predetermined position to prevent loosening by type vibration or the like. Holes 116 and 116 'are formed. The release preventing holes 116 and 116 'are formed at positions coinciding with the connector turning holes 103 formed in the connector 100 in the state where the connector 100 is completely rotated. Inserting a rivet or other iron rod into the loosening prevention holes 116 and 116 'and the connector turning hole 103 prevents the connector 100 from being loosened due to vibration during the type. In this case, when the rivet is used, the size of the loosening prevention holes 116 and 116 'slightly increases the size of the connecting hole turning hole 103 so that the rivet is hit by a hammer or the like so that the rivet enters and is deformed so as not to escape.

Figure 3a is a cross-sectional view of a preferred embodiment of the connection device according to the present invention including a locking jaw 114 and the locking projection 102, Figure 3b is a view of the joint shoe 110 from above. The joint shoe 110 and the joint cap 110 ′ according to the present invention may be manufactured by casting, or may be manufactured by cutting and welding a plate. In case of being made of a plate, the inner reinforcing bands 111 and 111 'in addition to the ring-shaped outer reinforcing bands 112 and 112', the inner reinforcing bands 111 and 111 ', and the doughnut-shaped support discs 1 and 1'. It is preferable to include a locking step reinforcement (115, 115 ') so as to reinforce around the locking step of.

Figure 4 shows a connector rotating mechanism 120 for easily rotating the connector 100. The connector rotating mechanism 120 is composed of a connector reel 122, which is a body, and a connector revolving protrusion 121 and a handle 123 inserted into the connector revolving hole 103, and the connector reel 122 is a connector ( It has the same curvature as the outer diameter of 100) and is in close contact with the connector at the time of rotation.

Hereinafter, the pile connection method using a PHC file connecting apparatus according to the present invention will be described in detail with reference to the drawings.

Insert the lower portion of the connector 100 into the joint cap 110 'to which the lower pile is connected, and the second locking protrusion 102' of the connector 100 is the locking groove 113 'of the joint cap 110'. Insert so that it is inserted into the

Then, after inserting one side of the relative anti-rotation rod 105 into the relative anti-rotation hole 104 'in the joint cap 110', the other side of the relative anti-rotation rod 105 is a joint shoe connected to the upper pile Position it so as to fit in the relative anti-rotation hole of the 110 (104 in Figure 3b), and the first locking projection 102 of the connector 100 is inserted into the locking groove 113 of the joint shoe 110. The upper pile joint shoe 110 is inserted into the upper connector (100).

When the upper and lower piles are completed by the joint shoe 100, the joint cap 110 'and the connector 100, the connector turning hole 103 formed in the connector 100 is connected to the connector rotating mechanism ( By rotating using 120, the first and second locking protrusions 102 and 102 ′ are fitted into the locking jaws 114 and 114 ′ of the locking grooves 113 and 113 ′. In this case, if a slight inclined section is provided on the locking jaws 114 and 114 'and the first and second locking protrusions 102 and 102', the upper and lower piles are more closely contacted when the connector 100 is rotated. As a result, it is possible to greatly improve the structural performance and workability by securing the transfer of energy during the blow.

Subsequently, after confirming that the loosening prevention holes 116 and 116 'formed in the connector bending hole 103 and the joint shoe 110 and the joint cap 110' coincide with each other, the connector bending hole 103 and the loosening prevention A rivet or other iron rod is inserted into the holes 116 and 116 'so that the connector 100 is not released even when vibrating during the type.

On the other hand, the present invention described above has been described with respect to specific embodiments, of course, various modifications are possible without departing from the scope of the invention. That is, the present invention is not limited to the above-described embodiment and the accompanying drawings, and various substitutions, modifications, and changes are possible in the art without departing from the technical spirit of the present invention. It will be clear to those of ordinary knowledge.

As described above, according to the present invention, the connection of the PHC file can be quickly performed by a very simple operation, thereby reducing the labor and equipment costs and greatly reducing the construction period.

In addition, by adjusting the size and number of the locking projections not only to secure the required bending moment strength, but also by placing a small inclined section on the locking projections and the locking jaws, the two PHC piles can be crimped to secure the transmission of energy during the impact. There is an advantage that can greatly improve the structural performance and workability.

Claims (5)

In the PHC file connector for vertically connecting the PHC file, A joint shoe 110 formed in a ring shape and connected to a lower end of an upper pile at an upper end thereof, and having a L-shaped locking groove 113 formed at an outer circumferential surface thereof; A joint cap 110 ′ formed horizontally symmetric with the joint shoe 110 and connected to an upper end of a lower pile at a lower end thereof, and having a L-shaped locking groove 113 ′ formed at an outer circumferential surface thereof; And It is formed of a ring-shaped connection ring 101 is inserted into the lower end of the joint shoe 110, the lower end is inserted into the upper end of the joint cap 110 ', the inner circumferential surface of the connection ring 101 is horizontally symmetrical At least two pairs of first and second locking protrusions 102 and 102 'are formed so that the locking grooves 113 of the joint shoe 110 are fitted to the first locking protrusion 102. The second locking protrusion 102 ′ includes a connector 100 to which the locking groove 113 ′ of the joint cap 110 ′ is fit-fitted, and the connection ring 101 of the connector 100. At least one connector turning hole 103 is formed in the PHC file connecting device, characterized in that to facilitate the rotation of the connector 100 The method of claim 1, The PHC file connecting device is further provided with a connector rotating mechanism 120 for rotating the connector 100 is inserted into the connector turning hole 103, The connector rotating mechanism 120 includes a connector reel 122 formed of the same curvature as the outer diameter of the connector 100; A handle 123 formed to protrude to one side of the connector reel 122; And PHC file connecting device, characterized in that it comprises a connector turning projection 121 protruding into the other side of the connector reel 122 to be fitted into the connector turning hole 103 The method of claim 1 The lower end of the joint shoe 110 and the upper end of the joint cap 110 ′ at the position corresponding to the connector turning hole 103 in the state in which the connector 100 is engaged by rotation, the release preventing holes 116 and 116. ') Is formed, The donut-shaped support discs 1 and 1 'are formed at the contact end surfaces of the joint shoe 110 and the joint cap 110', and the support discs 1 and 1 'are prevented from rotating relative to each other. PHC file connecting device, characterized in that the relative anti-rotation holes 104, 104 'for inserting the rod 105 is formed The method of claim 1, The joint shoe 110 and the joint cap 110 ′ are connected to the outer reinforcing bands 112 and 112 ′ and smaller in diameter than the outer reinforcing bands 112 and 112 ′ to be inserted into the connector 100. It is divided into inner reinforcing bands (111, 111 '), The outer diameter of the inner reinforcing band (111, 111 ') is the same or less than the inner diameter of the connector 100, the outer diameter of the outer reinforcing band (112, 112') is connected to match the outer diameter of the connector 100 No protrusions around it, The height of the connector 100 is PHC pile connecting device, characterized in that the same as the sum of the height of the inner reinforcing bands (111, 111 ') of the joint shoe 110 and the joint cap (110'). delete

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