KR100739499B1 - the coupling structure of pile with sliding locking joint - Google Patents

Abstract

The present invention relates to a connection structure of a pile using a sliding locking joint, to form a fitting plate protruding on both sides of the central plate, and has a joint formed on the upper edge of each of the fitting plate to form a locking portion protruding to a predetermined width, A shoe having a fitting formed at a predetermined width at an edge of the penetrating portion of the support ring, and having a pile applied to both ends thereof, so that each engaging portion of the joint is formed at the fitting portion of the shoe formed at each end of the pile. The pile connection structure, which is screwed together to assemble and connect, facilitates assembly by eliminating the need for welding, and promotes assembly accuracy and speed.

Referring to the connection structure of the pile using the sliding locking joint according to the present invention, which is a pile (30, 30 ') formed with a joint 10 and a shoe 20 for assembling and fixing to both sides of the joint 10. In the joint 10, a disk-shaped center plate 11 is formed, protrudes and forms a fitting plate 12 having a diameter smaller than the center plate 11 on both sides thereof, and each fitting plate. Protruding and forming the upper end of the (12) to face the engaging portion 13 of a predetermined width formed with a sawtooth engaging jaw (13a), respectively, the shoe 20, the support ring 21 through the center thereof ) Is provided so that the through-portion of the center is formed to face the fitting portion 23 removed to a predetermined width, and each side of the fitting portion 23 constitutes a shoe 20 having a stopper 25 respectively. And the piles 30 (30 ') provided with the shoes 20 at both ends thereof, so that the engaging portions 13 of the joints 10 are piles 30, 30, respectively. ) Assembled and rotating on the respective fitting portions 23 of the constitutes the connection structure of a file that is locked by the stopper (25).

The file connection structure of this method may be applied to an existing PH file or a steel pipe file, and the fitting and rotation of the joint 10 to the shoe 20 of the fixed pile 30 and the new file to be formed ( 30 ') is easy to install because the assembly is completed by the fitting and rotation, there is a feature that the installation is quick and accurate because no welding is required.

PA file, PHC file, steel pipe file, concrete file, shoe, joint, file

Description

The coupling structure of pile with sliding locking joint}

1 is an assembled perspective view according to an embodiment of the present invention.

2 is a perspective view according to an embodiment of the present invention.

3 is a cross-sectional view according to an embodiment of the present invention.

4 is an enlarged view of a portion A of FIG. 2;

5 is an assembled perspective view of the stopper according to the present invention.

6 is an operational state diagram of the stopper according to the present invention.

7 is a cross-sectional view according to another embodiment of the present invention.

[Description of Code for Major Parts of Drawing]

10 joint 11 center plate 13a locking jaw

20: shoe 21: support ring 22: seating portion

25: stopper 25a: fixed block 30, 30 ': file

The present invention relates to a connection structure of a pile using a sliding locking joint, to form a fitting plate protruding on both sides of the central plate, and has a joint formed on the upper edge of each of the fitting plate to form a locking portion protruding to a predetermined width, A shoe having a fitting formed at a predetermined width at an edge of the penetrating portion of the support ring, and having a pile applied to both ends thereof, so that each engaging portion of the joint is formed at the fitting portion of the shoe formed at each end of the pile. The pile connection structure, which is screwed together to assemble and connect, facilitates assembly by eliminating the need for welding, and promotes assembly accuracy and speed.

Generally, soft ground is a case in which the ground itself cannot withstand the load from the upper structure or the estimated settlement amount exceeds the allowable value. Soft ground, loose sandy soil, organic soil, etc. belong to such soft clay or organic soil. If roads, bridges, buildings, etc., are placed on soil, the shear level is excessive and the bearing capacity is insufficient, resulting in safety problems. In recent years, garbage has become an important environmental problem, As a plan to be used as a basis for roads and buildings, there are also plans for excessive ground subsidence and lack of bearing capacity.

Among the countermeasures for the stability and settlement problems of structures based on such soft grounds, the method of reaching fill layer, which is commonly used, is used in the factory (PIC) and PC (PC). ) Or steel pipe piles (RC), or steel pipe piles, which are cylindrical steel piles, by blow or reclamation, etc., and the piles of PH piles are blowable using diesel hammers, steam hammers or hydraulic hammers. It is applied to construction.

The preserved spun high strength concrete piles (PHC) is a high strength pile by pretensioning method of concrete compressive strength of more than 78.5N / mm2 (800kgf / cm2) made by applying centrifugal force, and the allowable compressive stress of concrete is very high. Since it is large, it can endure axial load larger than conventional PC piles, and it is excellent in impact strength by introducing necessary prestress uniformly in the section formed of concrete with compressive strength of 800Kgf / ㎠ or more. In addition, since it completely absorbs the tensile stress caused by the reflected wave generated at the time of driving, it is easy to penetrate deeper and harder layers because the middle hard layer which is not cracked and difficult to hit with the conventional PC pile is easily introduced. Of course, the most suitable wave for seismic design that receives both axial and horizontal forces due to the large flexural tensile stress of concrete As a work, it is a method of producing an excellent effect by the soft ground treatment method.

In the connection structure of the PH pile according to the prior art configured as described above, the depth of the pile varies depending on the scale of the building to be constructed or the state of the geological structure, or when the pile is connected up and down, the upper and lower ends of the pile are used. In the case of a steel pipe pile, a ring was inserted into the following pile to make a vertical fit, and welded along the butt portion outside.

However, since the weld strength between the upper and lower piles depends on the skill of the operator, it is easy to cause an unbalance in the weld strength, and if the weld cross section is too thin, the weld strength drops, which causes cracks and breaks in the weld. Typed files had problems such as not being able to achieve their original purpose.

In addition, in the case of the conventional field welding type joining method, the welding of a large number of welding sites, as well as the physical properties of the steel itself constituting the joint shoe by the welding heat, as well as the concrete of the pile due to the conduction heat, the strength of the connection of the pile There is a problem of lowering and impairing structural stability, due to the nature of the field work, the welding work itself is difficult in rainy weather, cracks in the weld due to the rapid cooling of the weld in winter, there was a problem that the work rate is lowered.

In addition to this welding method, as disclosed in Korean Utility Model Registration No. 0309950, a long rectangular reinforcement piece is fixed to two joint caps of a PH pile following by a fastening bolt, and a plurality of fastenings are formed on a circumference. In order to solve the above problem by developing the joint cap of the HS file, and the joint device of the PI file using the same, this problem is that the reinforcing pieces arranged on the circumference do not adhere to the joint cap and thus cannot be fixed in a large area. In addition, with this reinforcing piece, the protruding fastening bolt contained problems such as resistance generated when the P-C pile was hit and corrosion of this part.

Therefore, the present invention, in order to solve the above problems, to form a fitting plate protruding on both sides of the central plate, provided with a joint protruding and forming a locking portion of a predetermined width in each of the fitting plate, the portion penetrated in the center of the support ring A file having a shoe formed with a fitted portion removed at a predetermined width at the edge of the file, and having a file applied to both ends thereof, the pile for fitting and connecting each engaging portion of the joint to the fitted portion of the shoe formed at both ends of the file With the connection structure, the purpose is to make the connection and assembly of the pile easy and quick.

In addition, the shoe has a wide range of use by applying to the PI file as well as the steel pipe pile, and the outer surface of the shoe forms a fine seating portion, and when the joint is combined with the joint, the center plate is the seating portion. The bearing ring of each pile is brought into surface contact along its edge, so that the force is evenly transmitted even after the impact of the new pile.

Furthermore, the engaging portion of the joint becomes thicker toward one side, and when the joint and the shoe are coupled to each other, it is prevented from rotating further when rotated to some extent. Each fitting portion of the side is provided with a stopper that is locked by a spring caught on the locking jaw of the joint, after coupling the joint and the shoe, there is another object to prevent rotation in the opposite direction.

The present invention relates to a connection structure of a pile using a sliding locking joint, to form a fitting plate protruding on both sides of the central plate, and has a joint formed on the upper edge of each of the fitting plate to form a locking portion protruding to a predetermined width, A shoe having a fitting formed at a predetermined width at an edge of the penetrating portion of the support ring, and having a pile applied to both ends thereof, so that each engaging portion of the joint is formed at the fitting portion of the shoe formed at each end of the pile. The pile connection structure, which is screwed together to assemble and connect, facilitates assembly by eliminating the need for welding, and promotes assembly accuracy and speed.

Referring to the connection structure of the pile using the sliding locking joint according to the present invention, which is a pile (30, 30 ') formed with a joint 10 and a shoe 20 for assembling and fixing to both sides of the joint 10. In the joint 10, a disk-shaped center plate 11 is formed, protrudes and forms a fitting plate 12 having a diameter smaller than the center plate 11 on both sides thereof, and each fitting plate. Protruding and forming the upper end of the (12) to face the engaging portion 13 of a predetermined width formed with a sawtooth engaging jaw (13a), respectively, the shoe 20, the support ring 21 through the center thereof ) Is provided so that the through-portion of the center is formed to face the fitting portion 23 removed to a predetermined width, and each side of the fitting portion 23 constitutes a shoe 20 having a stopper 25 respectively. And the piles 30 (30 ') provided with the shoes 20 at both ends thereof, so that the engaging portions 13 of the joints 10 are piles 30, 30, respectively. ) Assembled and rotating on the respective fitting portions 23 of the constitutes the connection structure of a file that is locked by the stopper (25).

As described above, the file connection structure according to the present invention is largely composed of a file (30) (30 ') and a joint (10) connecting them, and will be described in detail with reference to the accompanying drawings, first, the joint (10) 1 and 2, it is provided with a disk-shaped central plate 11, the both sides of the fitting plate 12 of a diameter smaller than the central plate 11 is protruded and formed, The upper edge of each fitting plate 12 protrudes and forms a hook portion 13 having a predetermined width to face each other on a circumference, and the directions facing each of the fitting plates 12 are based on the center plate 11. To form a vertical direction, that is to cross in the direction, the thickness of the locking portion 13 is configured in such a form that becomes thicker gradually from one side to the other side, each of the locking portion 13 is serrated along the edge A locking jaw 13a is formed.

Next, the structure of the pile 30 (30 ') to which the joint 10 is applied will be described. Looking at the structure of the shoe 20 formed at both ends of the pile 30 (30 '), the shoe 20 first forms a washer-shaped bearing ring 21 through which a center of the disk is penetrated, and the bearing ring ( A circular seating portion 22 is formed to be formed at a predetermined depth on one surface of the surface 21, and protrudes and forms facing the fitting portion 23 penetrated / removed at a predetermined width along the edge through the center thereof. The part 22 is formed to be half or deeper than the thickness of the middle plate 11 of the joint 10, and the fitting part 23 is the width of the locking part 13 of the joint 10 or slightly larger than that. The shoe 20 is formed by the width.

For reference, as shown in Figs. 1 to 3, when the piles 30 and 30 to which the shoe 20 is applied are PH files, they are along the surface (width) of the supporting ring 21. A plurality of penetrating steel bar coupling holes 24 are formed, which are formed in a peanut shape in which two large and small circles are joined, and a reinforcing band having a predetermined height along the outer circumference of the support ring 21, that is, the edge thereof ( 21a) is integrally formed.

And the stopper 25 is formed on one side of the fitting portion 23 of the support ring 21, as shown in Figures 4 to 6, the fixing block 25a, spring 25b, fixing means 25c ) And the fixing column (25d), the fixing block (25a) is formed in the center penetrated through the hole, and to form a locking hole (25a ') on one side, which is the locking step of the joint ( 13a) is formed so as to protrude in a sawtooth shape corresponding to the cross-section, and each of the engaging port (25a ') to form a secondary engaging port (25a ″) protruding at a predetermined angle, respectively, as the fixing means (25c) It is provided with the bolt, pin, rivet, etc. which are fitted to the fixed block 25a, and the fixed pillar 25d is comprised with a bolt, a pin, etc.

Each component thus formed has a fixing block 25a on one side of the fitting portion, and fixes it with fixing means 25c fitted with a spring 25b, and a fixing column 25d is provided on one side of the fixing block 25a. It is fixed, the lower end of the spring (25b) is hooked to the auxiliary catching opening (25a ″) of one side, the upper end is fixed to the fixing column (25d), the fixing means (25c) fixed by the fixing block (25a) Rotation is based on the spring 25b in the direction in which the spring 25b is released to rotate the angle of the auxiliary catching hole (25a ″) and the fixing column (25d) (the angle at which the auxiliary catching hole is caught by the fixing column by the rotation of the fixing block). It is possible, and since the rotation in the direction in which the spring 25b is wound is impossible, it constitutes a stopper 25 having a structure in which the rotation of the fixed block 25a is restricted.

The shoe 20 thus constructed is formed at each end of the pile 30 (30 '), such as a PI file or a steel pipe file. First, in the case of the PI file 30 (30'), the centrifugal molding is performed. When the pair of shoes 20 are placed at a predetermined distance with their seating portions 22 facing outwards, the ends of the pair of shoes 20 are inserted into the respective steel bar coupling holes 24 with the steel rods 31. It is put into the prepared lower mold, and the concrete 32 is poured into the lower mold to assemble the upper mold to integrate the lower mold and the upper mold, and a prestress is applied to the steel rod 31 by applying a tension force to the assembled mold. After the centrifugal molding to compact the concrete 32 by the rotation of, after undergoing the first curing of the atmospheric steam curing, demolding it again through the second curing of the autoclave curing, PH having a cross section as shown in Figure 3 Seed file (PHC, Pretentioned spu n Construct high strength concrete piles.

And, in the case of a steel pipe pile, as shown in Fig. 7, the shoe 20 is welded and fixed to both ends of the existing steel pipe pile 33, but each seating portion 22 is fixed so as to face the steel pipe pile Configure

Looking at the structure connecting each of the piles (30, 30 ') formed in this way with the joint 10 with reference to Figures 1 to 3 and 7, where the pile method is required, such as soft ground, pile (30) If hitting, and the ear connection is necessary, the joint 10 is seated on the mounting portion 22 on the piled pile 30, and the joint 10 is connected to the locking portion 13 by the pile 30. Inserted into the fitting portion 23 of the upper shoe 20 and turned, while the locking portion 13 of the joint 10 is turned to one side until it is no longer turned, the stopper 25 is caught The sphere 25a 'is caught by the locking jaw 13a, and the spring 25b prevents the joint 10 from falling out again by moving (rotating) the joint 10 in the opposite direction.

Subsequently, a new pile 30 'connected to the assembled joint 10 is connected in a manner similar to that of the above method, which means that the fitting 23 is placed on the installed joint 10. It is inserted and turned so as to enter the locking portion 13, and it is attached to the fitting portion 23 and the stopper 25 so as to form a connection structure of the piles 30 and 30 '.

The connection structure of the pile of this method is easy to install because the assembly is completed by the fitting and rotation of the joint 10 to the shoe 20 of one end of the pile 30 and the fitting and rotation of the new pile 30 '. Since no welding is required, the installation is quick and accurate. The center plate 11 of the joint 11 is a seating part 22 formed in the shoe 20 of the piles 30 and 30 '. Since it is seated, the supporting rings 21 of each shoe 22 are in surface contact with each other, so that the impact applied to the connected new pile 30 'is uniformly transmitted over the front surface of the supporting ring 21.

On the other hand, the engaging portion 13 of the joint 31 and the fitting portion 23 of the shoe 20 are arranged and constituted two or more radially as necessary, so that the force distribution in the circumferential direction is uniform. To be done.

Thus, this invention forms the fitting plate which protruded on both surfaces of the center board, and has the joint which protruded and formed the latching part of the predetermined width in each said fitting plate, and has a fixed width at the edge of the part which perforated in the center of the support ring. A pile connection structure comprising a shoe formed with a fitting portion removed by a screw, and configured to apply a pile to both ends thereof, wherein each engaging portion of both joints is fitted to the fitting portion of the shoe formed at both ends of the pile to be assembled and connected. It is easy and quick to connect and assemble.

In addition, the shoe can be applied not only to PH file, but also to a steel pipe file, its use range is wide, and the outer surface of the shoe forms a fine seating portion, and when combined with the joint, the center plate is coupled to the seating portion. The bearing ring of each pile is brought into surface contact along its edge, so that the force is uniformly transmitted even when the blow is made after the connection of the new pile.

Furthermore, the engaging portion of the joint becomes thicker toward one side, and when the joint and the shoe are coupled to each other, it is prevented from rotating further when rotated to some extent. Each fitting part of the side is provided with a stopper that is locked by a spring caught on the engaging jaw of the joint, and after the coupling of the joint and the shoe, there is an effect of preventing rotation in the opposite direction.

Claims (5)

In connection structure of pile to fix on the ground like P.H. pile, steel pipe pile, The fitting plate 12 protrudes from both sides of the center plate 11, and a joint 10 having a plurality of engaging portions 13 protruding at a predetermined width is formed at the upper edge of each fitting plate 12. , A support plate 21 having a circular plate shape penetrates the center thereof, and constitutes a shoe 20 formed with a plurality of fitting portions 23 removed at a predetermined width at the edge of the penetrating center thereof, and at both ends thereof. The formed pile 30 (30 ') constitutes, It is characterized by connecting the pile by turning the fitting portion 23 of each shoe 20 formed at each end of each of the two piles (30) (30 ') to be connected to each of the two engaging portions 13 of the joint (10). Pile connection structure using sliding locking joint. The method of claim 1, On the outer surface of each shoe 20 of the piles 30 and 30 ', a seating portion 22 is formed to be recessed to a certain depth, and the seating portion 22 forms the center plate 11 of the joint 10. ) Is seated, the connection structure of the pile using a sliding locking joint, characterized in that the bearing ring of each pile connecting to each other. The method of claim 1, The locking portion 13 is formed to become thicker toward one side thereof, the connection structure of the pile using a sliding locking joint, characterized in that the joint is no longer rotated at a predetermined position. The method of claim 1, The locking portions 13 of the joint 10 are configured to face each other, but each of the central plate 11 in a direction intersecting with each other, the fitting portion 23 of the shoe 20 is two A connecting structure of piles using sliding locking joints, which are configured to face each other and distribute the force evenly along the circumferential direction. The method according to any one of claims 1 to 4. The joint 10 has a sawtooth engaging jaw 13a at the edge of the engaging portion 13, The stopper 25 is configured on one side of each fitting portion 23 of the inner support ring 21, A hole formed in the center thereof, and formed with a latch 25a 'protruding in a sawtooth shape on one side thereof, and fixing the auxiliary catches 25a ″ protruding from both sides of the latch 25a', respectively. Block 25a; A spring 25b; Fastening means 25c such as bolts, pins and rivets; Fixing column 25d such as a bolt or pin is provided, The fixing block 25a is placed on one side of the fitting part 23, and the fixing block 25a is fixed to the fixing unit 25c by the spring 25b, and the fixing column 25d is fixed to one side of the fixing block 25a. The lower end of the spring 25b is hooked to the auxiliary catch 25a ″ on one side, and the other end of the spring 25b is configured as a stopper 25 fixed to the fixing column 25d, and is responsible for locking the joint. Pile connection structure using sliding locking joint.

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