KR200366045Y1 - An advanced concrete pile - Google Patents

Abstract

The present invention relates to an improved concrete pile, and more particularly, a steel rod inserted therein, and a cap, a cap disc, a shoe, and a shoe disc, respectively, provided at the top and the bottom thereof, and both ends of the steel rod are respectively the cap disc and the shoe disc. In the conventional concrete pile including a fixing bolt to be coupled to each of the, in the cap comprising the cap disc integrally formed, the shoe integrally formed with the shoe disc, and the fixing nut having a clip groove on the inside; It includes a male screw coupled to the fixing nut to one side, the coupling pin is provided on both ends of the clip projection is inserted into the clip groove to the other side.

The present invention is easy to manufacture the concrete pile, the connection construction of the pile is convenient, and significantly reduces the manufacturing cost and construction cost.

Description

Improved Concrete Pile {An advanced concrete pile}

The present invention relates to a concrete pile, and more particularly, a steel rod inserted into the inside, a cap and a cap disc, and a shoe and a shoe disc at the top and bottom, respectively, and both ends of the steel rod to the cap disc and the shoe disc. In the conventional concrete pile including a fixing bolt for coupling each, comprising: a cap integrally formed with the cap disc, a shoe integrally formed with the shoe disc, a fixing nut having a clip groove therein; It comprises a male screw coupled to the fixing nut to one side, the coupling pins each having a clip protrusion is inserted into the clip groove to the other end.

In general, in order to secure stability and prevent settlement, during construction of a structure or a building, a plurality of piles that securely support the lower part are embedded in underground rock, or grounded, and then grounded. To accumulate. Especially in areas with unstable ground or weak ground, the piles must be cast or buried to securely accumulate civil engineering and buildings.

In the past, there have been many methods of distributing the load by forming a support using wood piles that are easily available in nature or by laying a stone on the support.In the early 1990s, hollow concrete piles using centrifugal manufacturing methods were used. As piles have been developed, many types of files are being used that can be applied to various conditions in the field such as chemical prestress (SC), preserved spun concrete piles (PC) and preserved spun high strength concrete (PHC) files.

Here, the process of manufacturing a hollow concrete pile will be briefly described with reference to FIG. 1. The cap 10 and the shoe 20 are symmetrically arranged at regular intervals to fit the length of the pile, and the cap disc 12 and the shoe disc 22 are connected and fixed with a plurality of steel bars 50 for reinforcement, and finished. After the plate 70 is coupled to both ends, the frame of the concrete pile is completed by tying the circumference of the steel bar 50 with the steel wire 54. After that, the pile frame is put into the cylindrical molding die 90, and then the appropriate amount of concrete 60 is injected into the injection hole 72 formed in the closing plate 70, and the molding die 90 is continuously rotated by centrifugal force. Concrete 60 is gathered at the inner edge of the molding die 90 to be hardened to form a hollow hollow cylindrical pile.

Here, the coupling method of the steel bar 50, the cap disc 12 and the shoe disc 22 is as follows. The steel bar 50 has a head having an outer diameter larger than the outer diameter of the cross section at one end, and the cap disc 12 and the shoe disc 22 have a plurality of through holes 14 arranged in a circle with respect to the center. The fixing nut 30 interposed between the head and the cap disc 12 and the shoe disc 22 of the head 50 is fastened to the fixing bolt 80 at the outside of the cap disc 12 and the shoe disc 22 to form a steel bar 50. Combine the end of the cap with the cap disk 12 and the shoe disk 22. At this time, the closing plate 70 is interposed from the outside of the cap disc 12 and the shoe disc 22.

The fixing nut 30 has a cylindrical shape and a hole through which the head of the steel bar 50 is caught is formed at one side, and a female screw for receiving the fixing bolt 80 is formed through the other side. Fixing bolt 80 and the closing plate 90 is removed when the molding of the file is completed.

Both ends of the steel bar 50 is coupled to the cap disc 12 and the shoe disc 22 in the same manner as described above, both ends of the steel bar 50 through the fixing nut 30 and then the outer diameter of the steel bar 50 It is coupled to the inside of the fixing nut 50 by the head 52 formed to a larger diameter.

However, the concrete pile, as shown in Figure 2a, the cap disc 12 and the cap 10 and the shoe disc 22 and the shoe 20 is formed separately by the welding joint, which is not aesthetically good In addition, the manufacturing process is cumbersome, and the thickness of the cap disc 12 and the shoe disc 22, which are welding members, should be thick, which causes a material cost increase.

On the other hand, the pile manufactured by the above method is manufactured to a certain length, if the length of the pile does not reach the depth to be placed or embedded, the construction is continued after connecting another pile vertically on the placed or embedded pile .

In the related art, as shown in FIG. 2B, a method of welding the outer circumferences of the cap disc 12 in contact with each other after stacking piles is commonly used.

However, conventionally, the pile is lifted and lowered several times in order to make contact with the edges of the cap disc 12, which is a part to be welded, so that the edges of the cap disc 12 are not aligned with each other, that is, the center axes of the cap and the pile are coincident with each other. The construction is cumbersome because it has to be repeated throughout, and it is not easy to weld the entire circumference of the pile outer periphery at the work site, and there is a problem in securing the reliability of the construction because the welding part is changed according to the skill of the operator. The construction efficiency is low because the work time should be devoted much.

In addition, the cap discs, which are provided in the cap of the conventional pile to be a butt welded joint, are formed to have a certain thickness or more in accordance with the characteristics of the welding. Improvement is urgent.

The present invention has been made to solve the problems of the conventional file described above, the present invention is to form a cap disc and shoe disc integrally to the cap and shoe, respectively, to facilitate the manufacture and to reduce the material cost.

By removing the conventional welding coupling method and adopting the bolt nut clip coupling method to securely connect the pile to maximize the convenience in construction.

1 is a cross-sectional view showing a conventional method for forming a pile.

2A is a cross-sectional view of a conventional pile.

Figure 2b is a combined state of the conventional pile.

Figure 3a is a perspective view of a cap according to an embodiment of the present invention.

Figure 3b is a perspective view of a shoe according to an embodiment of the present invention.

3c is a perspective view of a fixing nut according to an embodiment of the present invention

3d is a perspective view of a coupling pin according to an embodiment of the present invention.

Figure 3e is a coupling state of the fixing nut and the coupling pin according to an embodiment of the present invention.

Figure 4a is a cross-sectional view according to an embodiment of the present invention.

Figure 4b is a coupled state according to an embodiment of the present invention.

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

<Description of the code used in the main part of the drawing>

10: cap 14a: coupling groove

16: gripper 20: shoe

30: fixing nut 32: clip groove

34: engaging projection 36: stop jaw

40: coupling pin 42: male thread

44: Clipping

The present invention is provided with a steel rod inserted therein, a cap and a cap disc and a shoe and a shoe disc at the top and bottom, respectively, and a fixing bolt for coupling both ends of the steel bar to the cap disc and the shoe disc, respectively. A concrete pile, comprising: a cap integrally formed with the cap disc; A shoe integrally formed with the shoe disc; A fixing nut having a clip groove formed therein with an inner diameter larger than the female thread diameter on the inside thereof; It includes a male screw coupled to the fixing nut to one side, the coupling pins each having a clip protrusion on both ends inserted into the clip groove to the other side, the cap and bolt nut of the concrete pile stacked on the cap top surface It is combined in a clip manner and is poured or buried at the bottom of the file.

In addition, the present invention is a conventional concrete pile including a steel rod inserted therein, and a fixing bolt having a pair of caps and cap discs, respectively, coupled to the cap discs are arranged symmetrically up and down both ends of the steel rods. A cap integrally formed with the cap disc; A fixing nut having a clip groove formed therein with an inner diameter larger than the female thread rib diameter therein; A coupling pin having a male screw coupled to the fixing nut to one side, and a clip protrusion to be inserted into the clip groove to the other side, respectively at both ends; It is configured to include a pair of the cap that is in contact with the top and bottom when the concrete pile is laminated in a bolt nut clip coupling method to connect between the piles or to be poured or embedded in the top of the pile.

In addition, the present invention has a coupling protrusion formed by protruding from the outer end surface of the fixing nut is fitted into the through-hole formed in the cap disc or shoe disc, the cap disc and the shoe disc is coupled to the coupling protrusion fitting A groove is provided on the outer periphery of the through hole so that the fixing nut can be easily inserted into the through hole, and the fixing nut is emptied by the torque generated when the bolt is fastened and dismantled to the fixing nut and concrete. It is characterized by preventing the breakage.

In addition, the present invention is provided with a gripper formed by protruding the cap disc and the shoe disc inwards, the coupling between the cap and the shoe and the concrete that is coupled to the concrete when the molding is completed and forms both ends of the concrete pile is firm It is characterized in that to be maintained.

Looking at the configuration of the embodiment of the present invention having the above-described structural features in detail with reference to the accompanying drawings as follows.

Figure 3a is a perspective view of a cap according to an embodiment of the present invention, Figure 3b is a perspective view of a shoe according to an embodiment of the present invention, Figure 3c is a perspective view of a fixing nut according to an embodiment of the present invention, Figure 3d 3 is a perspective view of a coupling nut and a coupling pin according to an embodiment of the present invention, Figure 4a is a cross-sectional view according to an embodiment of the present invention, Figure 4b 5 is a cross-sectional view according to another embodiment of the present invention.

An embodiment of the improved concrete pile (P) of the present invention is provided with a steel rod inserted therein, a cap and a cap disc, and a shoe and a shoe disc at the top and bottom, respectively, and both ends of the steel rod are the cap disc and the shoe disc. In a conventional concrete pile including a fixing bolt for coupling to each,

A cap 10 including the cap disc 12 and integrally formed to form an upper end of the pile, a shoe 20 including the shoe disc 22 and integrally formed to form a lower end of the pile; Fixing nut 30 having a clip groove 32 formed with an inner diameter larger than the inner diameter of the female thread ribs on the inside and a male screw 42 coupled to the fixing nut 30 on one side and the clip groove on the other side. It comprises a coupling pin (40) having a clip projection (44) that is inserted into the (32), it is used is placed or embedded in the bottom of the pile alone or pile pile.

The cap 10 is a cylindrical pipe shape defining the outer diameter of the concrete pile, the upper surface is closed by the cap disc 12 formed on the top.

The cap disc 12 is coupled to the finishing plate 70 during molding and has an inner diameter hole 18 defining the inner diameter of the concrete pile, and a plurality of circularly arranged with respect to the center of the inner diameter hole 18. A through hole 14 is provided, wherein the inner diameter hole 18 and the through hole 14 are conventional components. The through hole 14 has a plurality of coupling grooves 14a on the outer circumference at equal intervals to accommodate and couple the fixing nut 30.

In addition, the cap disc 12 is provided with a plurality of grippers 16 formed at equal intervals at positions not invading the through holes 14 on a virtual circumference in which the through holes 14 are circularly arranged. The gripper 16 is formed inward from the inner surfaces of the cap disc 12 and the shoe disc 22, and has a grip tip 16a protruding left and right at an end thereof.

The shoe 20 is a cylindrical pipe shape defining the outer diameter of the concrete pile, the lower surface is closed by the shoe disc 22 formed at the bottom.

The shoe disc 22 has a central convex shape, which is to maintain the posture of the support after being poured and is a conventional component, and thus a detailed description thereof will be omitted.

In addition, the shoe disc 22 includes a through hole 24, a coupling groove 24a, a gripper 26, and a grip tip 26a in the same manner as the cap disc 12.

The fixing nut 30 is coupled to the through holes 14 and 24 at the inner side of the cap disc 12 and the shoe disc 22, respectively, and is formed to protrude from the outer end surface and the through holes 14 and 24. The coupling protrusion 34 is fitted to correspond to the coupling groove (14a, 24a) of the.

In addition, the fixing nut 30 is in contact with the end of the male screw 42 of the coupling pin 40 to be fastened therein to have an inner diameter smaller than the outer diameter of the male screw in order to keep the receiving length of the coupling pin 40 constant. The stop jaw 36 is formed.

The clip groove 32 is formed by removing a part of the internal thread.

The coupling pin 40 is used for the connection between piles stacked up and down, and the configuration and operation of the connection method between the piles to be described later will be described in detail.

Looking at the operation and use of the embodiment of the present invention described above are as follows.

The embodiment according to the present invention is a case of a concrete pile that is placed or embedded at the bottom, the lower end of the shoe 20 is formed to be convex and formed in the upper convex bottom, the inner diameter hole 18 in the center Each cap 10 is provided. The bottom of the shoe 20 is blocked in order to prevent soil from invading during pouring or embedding and to be supported in a stable posture after installation.

Meanwhile, the cap disc 12 and the shoe disc 22 are integrally formed with the cap 10 and the shoe 20, respectively, but are manufactured by plastic processing instead of the conventional welding method. In addition to minimizing the draw, the strength and beauty of the appearance are also excellent, and the thickness of the cap disc 12 and the shoe disc 22, which are inevitably formed of a thick material for the role of the joining member during welding, can be minimized. The savings in material costs are substantial.

In addition, when the pile is formed, the fixing bolt 80 is positioned at the time of coupling by the coupling protrusion 34 fitted into the coupling grooves 14a and 24a formed in the cap disc 12 and the shoe disc 22. It is easy to determine, and there is no need for a separate locking means such as a spanner for supporting the fixing nut 30 when the fixing bolt 80 is fastened before molding, and the fixing nut when disassembling the fixing bolt 80 after molding. (30) prevent the molded concrete from being destroyed.

In addition, the gripper 26 is inserted into and solidified when the concrete solidifies, so that the cap 10 and the shoe 20 are firmly maintained at both ends of the formed pile.

Figure 5 is another embodiment according to the present invention, a configuration suitable for use in the connection or top of the pile in a plurality of piles stacked, the configuration and operation will be described below.

This embodiment forms the bottom of the concrete pile with the same cap 10 as at the top, which is for lamination and connection with the pile of the lower, using the coupling pin 40 as a coupling means. Here, the upper and lower abutting caps are referred to as upper joint caps and lower joint caps, respectively, which are merely functional or positional designations, and the detailed descriptions thereof will be omitted because the configurations and functions are the same as the above-described embodiments.

However, a detailed description will be given of a connection method between files, which is a configuration object of the present embodiment.

When the pile is stacked up and down, the clip protrusion 44 is directed downward when the male screw 42 of the coupling pin 40 is fastened to the fixing nut 30 of the upper joint cap. At this time, since the end of the male screw 42 is in contact with the stop jaw 36, the coupling pin 40 is fastened to accommodate the depth is constant, the coupling pin 40 is the lower surface of the upper joint cap It protrudes to a uniform length.

Subsequently, the upper pile is stacked on the lower pile so that the clip protrusion 44 of the coupling pin 40 is inserted into the clip groove 32 of the fixing nut 30 provided on the lower joint cap, and the pile is interposed therebetween. The join is complete.

Here, the clip protrusion 44 is formed to be a certain size larger than the outer diameter of the cross section of the coupling pin 40, divided in the axial direction is formed into a number of places to shrink when inserted into the fixing nut 30 is completed insertion When restored, the clip groove 32 is caught. The clip protrusion 44 is formed with a gradient in the front to be smoothly inserted into the fixing nut (30).

In addition, the coupling pin 40 may be installed irrespective of the direction of the upper or lower joint cap, that is, as described above, the fixing nut 30 provided with the male screw 42 in the lower joint cap 30. It is also possible to be coupled to the clip protrusion 44 by inserting into the fixing nut 30 of the upper joint cap. The coupling pin 40 is preferably installed at equal intervals in at least three places or more so as to prevent side slip between piles, and it is preferable to add the quantity in consideration of the influence of external force applied to the pile after construction and construction.

In addition, the outer surface of the joint cap to display the scale to easily identify the position where the coupling pin 40 is coupled from the outside to facilitate the mutual positioning of the upper and lower joint cap when combined It is preferable to.

Usually, the cap disc coupled to the conventional upper and lower joint caps serves to fix the steel bar 60 during the manufacture of the pile, and serves as a medium for the welding coupling between the caps during construction. While forming the original plate integrally with the joint cap by the plastic working method to secure the steel bar, it is possible to manufacture the joint cap more easily, and the shape of the butt welding should be a relatively thick shape, the present invention is a conventional welding coupling method By eliminating the bolt nut clip coupling method, a thicker cap disc is not required as in the prior art, thereby greatly reducing the material cost compared to the quantity consumed.

The present invention is formed by plastic processing of the cap disc, the cap and the shoe disc, and the shoe integrally, so that the welding process of the cap disc and the shoe disc, the cap and the shoe as in the prior art is unnecessary, so the strength is high and the appearance is clean and easy. There is an effect that can be produced.

In addition, the present invention by connecting the upper and lower joint caps firmly by bolt nut clip coupling method without using the welding joint method as in the prior art by firmly joining the pile piled up to minimize the hassle in construction and maximize the convenience There is.

In addition, the present invention is not a welding coupling method affected by the skill of the operator, but bolt nut clip coupling method has the effect that can complete the pile laying or embedding construction of uniform quality regardless of the skill of the contractor.

In addition, the present invention has the effect of significantly reducing the material cost for consumption because it is unnecessary to use the cap material and the shoe plate of the thick material that was inevitably used in the conventional welding joint.

In addition, the present invention makes it easy to couple the fixing nut to the cap disc and the shoe disc during molding of the pile, and there is no need for a separate locking means such as a spanner for supporting the fixing nut when the fixing bolt is fastened before molding and When dismantling the fixing bolt, there is an effect of preventing the concrete formed around the fixing nut from being destroyed.

In addition, the present invention has the effect that the cap and the shoe is firmly maintained at both ends of the molded pile when the gripper is inserted into the inside when the concrete is solidified.

Claims (4)

In a conventional concrete pile including a steel rod inserted therein, and a cap and a cap disc and a shoe and a shoe disc at the top and bottom, respectively, and fixing bolts for coupling both ends of the steel rod to the cap disc and the shoe disc, respectively. , A cap integrally formed with the cap disc; A shoe integrally formed with the shoe disc; A fixing nut having a clip groove formed therein with an inner diameter larger than the female thread diameter on the inside thereof; It includes a male screw coupled to the fixing nut to one side, the coupling pins each having a clip protrusion on both ends inserted into the clip groove to the other side, the cap and bolt nut of the concrete pile stacked on the cap top surface An improved concrete pile characterized by being joined by clip coupling and being poured or buried at the bottom of the pile. In a conventional concrete pile including a steel rod inserted therein, and a fixing bolt having a pair of caps and a cap disc and coupling the two ends of the steel rod to the cap disc that is symmetrically arranged up and down, A cap integrally formed with the cap disc; A fixing nut having a clip groove formed therein with an inner diameter larger than the female thread rib diameter therein; A coupling pin having a male screw coupled to the fixing nut to one side, and a clip protrusion to be inserted into the clip groove to the other side, respectively at both ends; Improved concrete pile, characterized in that comprising a pair of the cap contacting the upper and lower when the concrete pile is laminated in a bolt nut clip coupling method to connect between piles or is placed or embedded on top of the pile. The method according to claim 1 or 2, The fixing nut is fitted into a through hole formed in the cap disc or shoe disc with a coupling protrusion formed to protrude from the outer end surface, The cap disc and the shoe disc include a coupling groove into which the coupling protrusion is fitted to the outer circumference of the through hole so that the fixing nut can be easily inserted into the through hole, and when the bolt is fastened and dismantled to the fixing nut. Improved concrete pile, characterized in that to prevent the fixing nut from screwing by the generated torque and to break the concrete. The method according to claim 1 or 2, The cap disc and the shoe disc are provided with a gripper formed to protrude inward to ensure that the coupling of the concrete and the cap and the shoe that are coupled to the concrete when the molding is completed and forms both ends of the concrete pile is maintained firmly Featuring an improved concrete pile.