Pile connection apparatus

Abstract

Provided, according to the present invention, is a pile connection apparatus which is an apparatus for connecting an upper pile with a lower pile and comprises: an upper connection plate member fixed to the lower end of the upper pile; a lower connection plate member fixed to the upper end of the lower pile; and a plurality of coupling pins for coupling the upper connection plate member with the lower connection plate member.

Description

Pile connector

[0001] The present invention relates to a pile connection technology, and more particularly, to a device for connecting two piles using a pin.

[0002] As a patent for a technology for connecting piles using pins, No. 10-1983287 describes a configuration of an upper connecting plate connected by a bolt to the lower end of an upper PHC pile, a lower connecting plate connected by a bolt to the upper end of a lower PHC pile, and a shear fixing pin connecting the upper connecting plate and the lower connecting plate.

[0003] In the conventional technology as described in the above prior patent, there are problems such as loosening of the bolts connecting the connecting plate and the PHC pile, reduction of the axial contact area due to the bolt head hole, presence of a weak part in the bending resistance due to the reduction of the cross-section due to the bolt hole, and pin loss when the restraining stress is reduced due to the longitudinal pin connection of the connecting part.

[0004] An object of the present invention is to provide a pile connection device that solves the problems of the conventional pin connection method as described above.

[0005] In order to achieve the above-described object of the present invention, according to one aspect of the present invention, there is provided a device for connecting an upper pile and a lower pile, comprising: an upper connecting plate member fixed to the lower end of the upper pile; a lower connecting plate member fixed to the upper end of the lower pile; And a plurality of coupling pins for coupling the upper coupling plate member and the lower coupling plate member, wherein one of the upper coupling plate member and the lower coupling plate member has an outer protruding wall portion formed by extending along the circumferential direction and protruding along the longitudinal direction of the pile, and the other member has an inner protruding wall portion formed by extending along the circumferential direction and protruding along the longitudinal direction of the pile and seated in an inner region of the outer protruding wall portion, a plurality of pin insertion holes arranged in sequence along the circumferential direction are formed in the outer protruding wall portion, a plurality of pin insertion grooves arranged in sequence along the circumferential direction are formed in the inner protruding wall portion, each of the plurality of pin insertion holes extending in the radial direction and penetrating the outer protruding wall portion, each of the plurality of pin insertion grooves extending in the radial direction, and each of the plurality of coupling pins is installed by being fitted into the pin insertion hole and the pin insertion groove.

[0006] In order to achieve the above object of the present invention, according to another aspect of the present invention, a device for connecting an upper pile, which is a PHC pile, and a lower pile, which is a PHC pile, is provided, the device including: an upper connecting plate member fixed to the lower end of the upper pile; a lower connecting plate member fixed to the upper end of the lower pile; and a plurality of connecting pins for connecting the upper connecting plate member and the lower connecting plate member, wherein the upper connecting plate member is formed during the manufacturing process of the upper pile, and the lower connecting plate member is formed during the manufacturing process of the lower pile.

[0007] In order to achieve the above object of the present invention, according to another aspect of the present invention, there is provided a device for connecting an upper pile, which is a PHC pile, and a lower pile, which is a PHC pile, wherein the upper pile has an upper pile concrete body and a lower finishing plate member made of a metal material fixed to a lower surface of the upper pile concrete body, and the lower pile has a lower pile concrete body and an upper finishing plate member made of a metal material fixed to an upper surface of the lower pile concrete body, and includes an upper connecting plate member made of a metal material fixed to the lower finishing plate member; a lower connecting plate member made of a metal material fixed to the upper finishing plate member; and a plurality of connecting pins for connecting the upper connecting plate member and the lower connecting plate member, wherein the upper connecting plate member is fixed to the lower finishing plate member by welding before a pile connecting process is performed at a pile construction site, and the lower connecting plate member is fixed to the upper finishing plate member by welding before a pile connecting process is performed at a pile construction site.

[0008] In order to achieve the above object of the present invention, according to another aspect of the present invention, there is provided a device for connecting an upper pile, which is a PHC pile, and a lower pile, which is a PHC pile, wherein the upper pile has an upper pile concrete body, and a lower finishing plate member made of a metal material fixed to a lower surface of the upper pile concrete body, and includes an upper connecting plate member made of a metal material fixed to the lower finishing plate member; a lower connecting plate member fixed to an upper end of the lower pile; and a plurality of connecting pins for connecting the upper connecting plate member and the lower connecting plate member, wherein the upper connecting plate member is fixed to the lower finishing plate member by welding before a pile connecting process is performed at a pile construction site, and the lower connecting plate member is formed during a manufacturing process of the lower pile.

[0009] In order to achieve the above object of the present invention, according to another aspect of the present invention, there is provided a device for connecting an upper pile which is a PHC pile and a lower pile which is a PHC pile, wherein the lower pile has a lower pile concrete body and an upper finishing plate member made of a metal material fixed to an upper surface of the lower pile concrete body, and includes a lower connecting plate member fixed to a lower end of the upper pile; a lower connecting plate member made of a metal material fixed to the upper finishing plate member; and a plurality of connecting pins for connecting the upper connecting plate member and the lower connecting plate member, wherein the upper connecting plate member is formed during the manufacturing process of the upper pile, and the lower connecting plate member is fixed by welding to the upper finishing plate member before a pile connecting process is performed at a pile construction site.

[0010] In order to achieve the above object of the present invention, according to another aspect of the present invention, there is provided a pile connecting device for connecting an upper pile, which is a steel pipe pile, and a lower pile, which is a PHC pile, the device comprising: an upper connecting plate member made of a metal material fixed to the lower end of the upper pile; a lower connecting plate member fixed to the upper end of the lower pile; and a plurality of connecting pins for connecting the upper connecting plate member and the lower connecting plate member, wherein the upper connecting plate member is fixed by welding to the lower end of the upper pile before a pile connecting process is performed at a pile construction site, and the lower connecting plate member is formed during a manufacturing process of the lower pile.

[0011] In order to achieve the above object of the present invention, according to another aspect of the present invention, there is provided a device for connecting an upper pile which is a steel pipe pile and a lower pile which is a PHC pile, wherein the lower pile has a lower pile concrete body and an upper finishing plate member made of a metal material fixed to an upper surface of the lower pile concrete body, and includes an upper connecting plate member made of a metal material fixed to a lower end of the upper pile; a lower connecting plate member made of a metal material fixed to the upper finishing plate member; and a plurality of connecting pins for connecting the upper connecting plate member and the lower connecting plate member, wherein the upper connecting plate member is fixed by welding to the lower end of the upper pile before a pile connecting process is performed at a pile construction site, and the lower connecting plate member is fixed by welding to the upper finishing plate member before a pile connecting process is performed at a pile construction site.

[0012] According to the present invention, all of the aforementioned objectives of the present invention can be achieved. Specifically, since the connecting plate member is welded to the pile, the conventional bolt loosening problem does not occur.

[0013] In addition, since bolt holes are not formed in the connecting plate member in the present invention, the problem of the existence of a weak point due to a reduction in the axial contact area and a reduction in the cross-section caused by the bolt holes does not occur.

[0014] In addition, according to the present invention, the pin can be prevented from coming off by maintaining the restraining stress through the induction of shear resistance of the coupling pin and the application of the spring pin.

[0015] FIG. 1 is a perspective view illustrating a state in which two piles are connected by a pile connecting device according to one embodiment of the present invention.

[0016] Figure 2 is a longitudinal cross-sectional view of the pile connection portion illustrated in Figure 1.

[0017] Figure 3 is a cross-sectional view of the pile connection portion shown in Figure 1.

[0018] Figure 4 is an exploded perspective view of the pile connecting device illustrated in Figure 1.

[0019] Fig. 5 is a perspective view of a coupling pin provided in the pile connecting device illustrated in Fig. 2.

[0020] Fig. 6 is a longitudinal cross-sectional view showing a state in which two piles are connected by a pile connecting device according to another embodiment of the present invention.

[0021] Fig. 7 is a longitudinal cross-sectional view showing a state in which two piles are connected by a pile connecting device according to another embodiment of the present invention.

[0022] Hereinafter, the configuration and operation of an embodiment of the present invention will be described in detail with reference to the drawings.

[0023] Figures 1 and 2 illustrate a state in which two piles are connected by a pile connection device according to one embodiment of the present invention, as a perspective view and a longitudinal cross-sectional view. Referring to Figures 1 and 2, an upper pile (11) and a lower pile (16), which are arranged in sequence along the height direction, are connected by a pile connection device (100) according to one embodiment of the present invention.

[0024] In this embodiment, both the upper pile (11) and the lower pile (16) are PHC (Pretensioned spun High strength Concrete) piles.

[0025] The upper pile (11) is a PHC pile, and includes a hollow upper pile concrete body (12) extending along the longitudinal direction of the upper pile (11), a plurality of upper pile reinforcing steels (13) that are installed by being embedded in the upper pile concrete body (12) and extending along the longitudinal direction of the upper pile (11), and an upper pile connecting part (110) that is fixed to the lower end of the upper pile concrete body (12) and to which the lower ends of the upper pile reinforcing steels (13) are connected. Although not shown, the upper pile (11) further includes an upper finishing member that is fixed to the upper end of the upper pile concrete body (12) and to which the upper ends of the upper pile reinforcing steels (13) are connected. The upper pile (11) can be manufactured through a conventional PHC pile manufacturing method.

[0026] The lower pile (16) is a PHC pile, and includes a hollow lower pile concrete body (17) extending along the longitudinal direction of the lower pile (16), a plurality of lower pile reinforcing steels (18) that are installed by being embedded in the lower pile concrete body (17) and extending along the longitudinal direction of the lower pile (16), and a lower pile connecting part (150) that is fixed to the upper end of the lower pile concrete body (17) and to which the upper ends of the lower pile reinforcing steels (18) are connected. Although not shown, the lower pile (16) further includes a lower finishing member that is fixed to the lower end of the lower pile concrete body (17) and to which the lower ends of the lower pile reinforcing steels (18) are connected. The lower pile (16) can be manufactured through a conventional PHC pile manufacturing method.

[0027] The upper pile (11) and the lower pile (16) are connected by a pile connection device (100) according to one embodiment of the present invention. FIG. 3 shows a cross-sectional view of a portion where the upper pile (11) and the lower pile (16) are connected by a pile connection device (100) according to one embodiment of the present invention, and FIG. 4 shows an exploded perspective view of the pile connection device (100) according to one embodiment of the present invention. Referring to FIGS. 1 to 4, a pile connection device (100) according to one embodiment of the present invention includes an upper pile connection part (110) provided on an upper pile (11), a lower pile connection part (150) provided on a lower pile (16), a plurality of coupling pins (190) for coupling the upper pile connection part (110) and the lower pile connection part (150), and a plurality of patching parts (195) for preventing external exposure of the plurality of coupling pins (190).

[0028] The upper pile connector (110) is fixed to the lower end of the upper pile concrete body (12) of the upper pile (11) and the lower end of the upper pile reinforcing steel (13) is connected thereto. The upper pile connector (110) is made of a metal material. The upper pile connector (110) is integrally formed with the upper pile (11) during the manufacturing process of the upper pile (11), which is a PHC pile. That is, the upper pile connector (110) is included in the upper pile (11) and at the same time becomes a component of the pile connection device (100). The upper pile connector (110) includes an upper connection plate member (120) that contacts the lower end of the upper pile concrete body (12) and an upper perimeter wall member (140) that surrounds the lower end of the upper pile concrete body (12) and is connected to the upper connection plate member (120). The upper connecting plate member (120) and the upper peripheral wall member (140) are welded to form an integral body.

[0029] The upper connecting plate member (120) is generally in the shape of a ring, and a through hole (121) is formed in the center of the upper connecting plate member (120). The upper connecting plate member (120) contacts the lower end of the upper pile concrete body (12). A plurality of upper pile reinforcing steel members (13) are joined to the upper connecting plate member (120). The upper connecting plate member (120) has an upper foundation plate portion (122) and an outer protruding wall portion (130) formed by protruding from the upper foundation plate portion (122).

[0030] The upper foundation plate (122) is generally in the shape of a plate-like ring and makes surface contact with the lower surface of the upper pile concrete body (12). An upper perimeter wall member (140) is welded to the outer perimeter of the upper foundation plate (122) and is integrally joined. An outer protruding wall member (130) is formed by protruding downward from the upper foundation plate (122).

[0031] The outer protrusion wall portion (130) is formed by protruding downward from the upper base plate portion (122). The outer protrusion wall portion (130) extends along the circumferential direction of the upper base plate portion (122). The outer protrusion wall portion (130) extends long along the circumferential direction and has a generally circular ring shape. The outer protrusion wall portion (130) is located generally radially outward from the upper base plate portion (122). A plurality of slit grooves (132) are formed in the outer protrusion wall portion (130) and arranged to be spaced apart from each other along the circumferential direction. In the present embodiment, it is described that two slit grooves (132) are arranged at equal intervals of 180°. A plurality of pin insertion holes (134) are formed in the outer protrusion wall portion (130) and arranged in sequence along the circumferential direction. Each of the plurality of pin insertion holes (134) extends radially and penetrates the outer protruding wall portion (130). A coupling pin (190) is fitted into the pin insertion hole (134). In the present embodiment, twelve pin insertion holes (134) are arranged at equal intervals along the circumferential direction. As illustrated in FIG. 3, the outer protruding wall portion (130) is illustrated as having a smooth circular inner wall surface, but the present invention is not limited thereto. Some shapes may be modified to correspond to formwork connecting bolts required for manufacturing the upper pile (11), which is a PHC pile, and this also falls within the scope of the present invention.

[0032] The upper perimeter wall member (140) is generally in the shape of a ring, wraps around the lower perimeter of the upper pile concrete body (12), and is welded to the upper connecting plate member (120) to form an integral part with the upper connecting plate member (120).

[0033] The lower pile connection (150) is fixed to the upper end of the lower pile concrete body (17) of the lower pile (16) and the lower end of the lower pile reinforcing steel (18) is connected thereto. The lower pile connection (150) is made of a metal material. The lower pile connection (150) is integrally formed with the lower pile (16) during the manufacturing process of the lower pile (16), which is a PHC pile. That is, the lower pile connection (150) is included in the lower pile (16) and simultaneously becomes a component of the pile connection device (100). The lower pile connection (150) includes a lower connection plate member (160) that contacts the upper end of the lower pile concrete body (17) and a lower perimeter wall member (180) that surrounds the upper end of the lower pile concrete body (17) and is connected to the lower connection plate member (160). The lower connecting plate member (160) and the lower peripheral wall member (180) are welded to form an integral body.

[0034] The lower connecting plate member (160) is generally in the shape of a ring, and a through hole (161) is formed in the center of the lower connecting plate member (160). The lower connecting plate member (160) contacts the upper end of the lower pile concrete body (17). A plurality of lower pile reinforcing steel members (18) are joined to the lower connecting plate member (160). The lower connecting plate member (160) has a lower foundation plate portion (162), an inner protruding wall portion (170) formed by protruding from the lower foundation plate portion (162), and a plurality of insertion protrusions (175) formed by protruding from the lower foundation plate portion (162).

[0035] The lower foundation plate (162) is generally in the shape of a plate-like ring and makes surface contact with the upper surface of the lower pile concrete body (17). A lower perimeter wall member (180) is welded to the outer periphery of the lower foundation plate (162) and is integrally joined. An inner protruding wall member (170) is formed by protruding upward from the lower foundation plate (162).

[0036] The inner protrusion wall portion (170) is formed by protruding upward from the lower base plate portion (162). The inner protrusion wall portion (170) extends along the circumferential direction of the lower base plate portion (162). The inner protrusion wall portion (170) extends long along the circumferential direction and has a generally circular ring shape. The inner protrusion wall portion (170) is located generally radially inward from the lower base plate portion (162). The outer diameter of the inner protrusion wall portion (170) is smaller than the inner diameter of the outer protrusion wall portion (130) provided on the upper connecting plate member (110). Accordingly, the inner protrusion wall portion (170) is seated in the inner region of the outer protrusion wall portion (130) provided on the upper connecting plate member (110). A plurality of pin insertion grooves (174) are formed in the inner protrusion wall portion (170) and are arranged in sequence along the circumferential direction. Each of the plurality of pin insertion grooves (174) extends in the radial direction. A coupling pin (190) is fitted into the pin insertion groove (174). In this embodiment, it is described that 12 pin insertion grooves (174) are arranged at equal intervals along the circumferential direction. Each of the 12 pin insertion grooves (174) is arranged in a one-to-one correspondence with each of the 12 pin insertion holes (134) along the circumferential direction. That is, the corresponding pin insertion grooves (174) and pin insertion holes (134) are connected to each other and extend in a straight line along the radial direction. As illustrated in FIG. 3, the inner protruding wall portion (170) is illustrated as having a smooth circular inner wall surface, but the present invention is not limited thereto. Some shapes may be modified to correspond to formwork connecting bolts required for manufacturing the lower pile (16), which is a PHC pile, and this also falls within the scope of the present invention.

[0037] A plurality of insertion protrusions (175) are formed by protruding from the lower base plate portion (162). The plurality of insertion protrusions (175) are positioned radially outside the inner protrusion wall portion (170). In this embodiment, it is described that two insertion protrusions (175) are arranged at equal intervals of 180°. The insertion protrusions (175) can be inserted into the slit grooves (132) formed in the outer protrusion wall portion (130) of the upper connecting plate member (120), and when the two insertion protrusions (175) are inserted into the corresponding slit grooves (132), 12 pin insertion holes (134) and 12 pin insertion grooves (174) are aligned so as to correspond one to one.

[0038] In this embodiment, it is described that the outer protrusion wall portion (130) positioned radially outward is provided on the upper connecting plate member (120) and the inner protrusion wall portion (170) positioned radially inward is provided on the lower connecting plate member (160). However, alternatively, the outer protrusion wall portion may be provided on the lower connecting plate member (160) and the inner protrusion wall portion may be provided on the upper connecting plate member (120), and this also falls within the scope of the present invention.

[0039] In this embodiment, it is described that a slit groove (132) is formed in an outer protruding wall portion (130) and an insertion protrusion (175) inserted into the slit groove (132) is provided in a lower connecting plate member (160). However, alternatively, the slit groove may be formed in an inner protruding wall portion (170) and an insertion protrusion may be provided in an upper connecting plate member (120), and this also falls within the scope of the present invention.

[0040] The lower perimeter wall member (180) is generally in the shape of a ring, surrounds the upper perimeter of the lower pile concrete body (17), and is welded to the lower connecting plate member (150) to form an integral part with the lower connecting plate member (150).

[0041] A plurality of coupling pins (190) couple the upper pile connecting member (110) and the lower pile connecting member (150). Each of the plurality of coupling pins (190) is sequentially inserted from the outside into the pin insertion hole (134) and the pin insertion groove (174). A portion of the longitudinal direction of the coupling pin (190) is inserted into the pin insertion groove (174), and the remaining portion is fitted into the pin insertion hole (134). Fig. 5 illustrates a perspective view of the coupling pin (190). Referring to Fig. 5, the coupling pin (190) is a spring pin that is elastically deformable so that the outer diameter is variable, and has a pin body (192) in the form of a hollow metal tube having a predetermined length. An opening (194) extending in the longitudinal direction is formed in the pin body (192). The opening (194) extends to both longitudinal ends of the pin body (192). The spring pin (190) is fitted snugly into the pin insertion hole (134) and the pin insertion groove (174).

[0042] Each of the plurality of patching portions (195) is filled in the radially outer portion of the pin insertion hole (134) while the coupling pin (190) is fitted snugly into the pin insertion hole (134) and the pin insertion groove (174), thereby preventing the coupling pin (190) from coming off and being exposed. In addition, the patching portion (195) prevents external foreign substances from coming into contact with the coupling pin (190), thereby preventing damage and breakage of the coupling pin (190). The patching portion (195) is intended to maintain the function of the coupling pin (190), which is a spring pin, to the greatest extent possible, and may be omitted depending on the conditions of the pile construction site, which also falls within the scope of the present invention.

[0043] According to the pile connection device (100) described with reference to FIGS. 1 to 5, the pile connection process can be performed without welding and bolting work at the pile construction site. At the pile construction site, in order to connect the upper pile (11) and the lower pile (16), only the work of positioning the upper pile (11) on the lower pile (16), the work of inserting a plurality of coupling pins (190) to couple the upper connection plate member (120) and the lower connection plate member (160), and the patching work of forming a plurality of patching portions (195) are performed.

[0044] Fig. 6 illustrates a longitudinal cross-sectional view of two piles connected by a pile connecting device according to another embodiment of the present invention. Referring to Fig. 6, an upper pile (21) and a lower pile (26), which are arranged in sequence along the height direction, are connected by a pile connecting device (200) according to another embodiment of the present invention.

[0045] In this embodiment, both the upper pile (21) and the lower pile (26) are PHC piles of conventional structure.

[0046] The upper pile (21) is a PHC pile, and includes a hollow upper pile concrete body (12) extending along the longitudinal direction of the upper pile (21), a plurality of upper pile reinforcing steels (13) that are installed by being embedded in the upper pile concrete body (12) and extending along the longitudinal direction of the upper pile (21), and a lower end portion (22) that is fixed to the lower end of the upper pile concrete body (12) and to which the lower ends of the upper pile reinforcing steels (13) are joined. Although not shown, the upper pile (21) further includes a upper end portion that is fixed to the upper end of the upper pile concrete body (12) and to which the upper ends of the upper pile reinforcing steels (13) are joined. The upper pile (21) can be manufactured through a conventional PHC pile manufacturing method. The configuration of the upper pile concrete body (12) and the upper pile reinforcing steel (13) in the upper pile (21) is substantially the same as the configuration of the upper pile concrete body (12) and the upper pile reinforcing steel (13) provided in the upper pile (11) illustrated in FIG. 2, so only the lower end portion (22) is described here.

[0047] The lower finishing part (22) is made entirely of metal and includes a lower finishing plate member (24) that makes surface contact with the lower surface of the upper pile concrete body (12), and a lower perimeter wall member (25) that is connected to the lower finishing plate member (24) and surrounds the lower perimeter of the upper pile concrete body (12).

[0048] The lower finishing plate member (24) is generally in the form of a plate-like ring and makes surface contact with the lower surface of the upper pile concrete body (12). A plurality of upper pile reinforcing steel members (13) are joined and fixed to the lower finishing plate member (24). A lower perimeter wall member (25) is connected to the outer periphery of the lower finishing plate member (24).

[0049] The lower perimeter wall member (25) is generally ring-shaped and surrounds the lower perimeter of the upper pile concrete body (12). The lower perimeter wall member (25) is connected to the outer perimeter of the lower finishing plate member (24). The lower perimeter wall member (25) is joined to the lower finishing plate member (24) by welding to form an integral body.

[0050] The lower pile (26) is a PHC pile, and includes a hollow lower pile concrete body (17) extending along the longitudinal direction of the lower pile (26), a plurality of upper pile reinforcing steels (18) that are installed by being embedded in the lower pile concrete body (17) and extending along the longitudinal direction of the lower pile (26), and an upper end portion (27) that is fixed to the upper end of the lower pile concrete body (17) and to which the upper ends of the lower pile reinforcing steels (18) are joined. Although not shown, the lower pile (26) further includes a lower end portion that is fixed to the lower end of the lower pile concrete body (17) and to which the lower ends of the lower pile reinforcing steels (18) are joined. The lower pile (26) can be manufactured through a conventional PHC pile manufacturing method. The configuration of the lower pile concrete body (17) and the lower pile reinforcing steel (18) in the lower pile (26) is substantially the same as the configuration of the lower pile concrete body (17) and the lower pile reinforcing steel (18) provided in the lower pile (16) illustrated in FIG. 2, so only the upper finishing part (27) is described here.

[0051] The upper finishing part (27) is made entirely of metal and includes an upper finishing plate member (28) that makes surface contact with the upper surface of the lower pile concrete body (17), and an upper perimeter wall member (29) that is connected to the upper finishing plate member (28) and surrounds the upper perimeter of the lower pile concrete body (17).

[0052] The upper finishing plate member (28) is generally in the form of a plate-like ring and makes surface contact with the upper surface of the lower pile concrete body (17). A plurality of lower pile reinforcing steel members (13) are joined and fixed to the upper finishing plate member (28). An upper perimeter wall member (29) is connected to the outer periphery of the upper finishing plate member (28).

[0053] The upper perimeter wall member (29) is generally ring-shaped and surrounds the upper perimeter of the lower pile concrete body (17). The upper perimeter wall member (29) is connected to the outer perimeter of the upper finishing plate member (28). The upper perimeter wall member (29) is joined to the upper finishing plate member (28) by welding to form an integral body.

[0054] The upper pile (21) and the lower pile (26) are connected by a pile connection device (200) according to another embodiment of the present invention. The pile connection device (200) according to another embodiment of the present invention includes an upper connection plate member (120) fixed to the upper pile (21), a lower connection plate member (160) fixed to the lower pile (26), a plurality of coupling pins (190) for connecting the upper connection plate member (120) and the lower connection plate member (160), and a plurality of patching portions (195) for preventing external exposure of the plurality of coupling pins (190).

[0055] The upper connecting plate member (120) has a configuration substantially identical to that of the upper connecting plate member (120) of the embodiment illustrated in FIG. 2, and therefore, a detailed description thereof is omitted herein. The upper connecting plate member (120) is welded to the lower finishing plate member (24) provided on the upper pile (21). The welding work for joining the upper connecting plate member (120) and the lower finishing plate member (24) is performed before the pile connection process is performed at the pile construction site.

[0056] The lower connecting plate member (160) has a configuration substantially identical to that of the lower connecting plate member (160) of the embodiment illustrated in FIG. 2, and therefore, a detailed description thereof is omitted herein. The lower connecting plate member (160) is welded to the upper finishing plate member (28) provided on the lower pile (26). The welding work for joining the lower connecting plate member (160) and the upper finishing plate member (28) is performed before the pile connection process is performed at the pile construction site.

[0057] Since the plurality of coupling pins (190) have a configuration substantially identical to that of the plurality of coupling pins (190) of the embodiment illustrated in FIG. 2, a detailed description thereof is omitted here.

[0058] Since the plurality of patching parts (195) have a configuration substantially identical to that of the plurality of patching parts (195) of the embodiment illustrated in FIG. 2, a detailed description thereof is omitted here.

[0059] According to the pile connection device (200) described with reference to Fig. 6, the pile connection process can be performed without welding and bolting work at the pile construction site. At the pile construction site, in order to connect the upper pile (21) and the lower pile (26), only the work of positioning the upper pile (21) on the lower pile (26), the work of inserting a plurality of coupling pins (190) to couple the upper connection plate member (120) and the lower connection plate member (160), and the patching work of forming a plurality of patching portions (195) are performed.

[0060] Although not shown, the upper pile (21) in the embodiment illustrated in FIG. 6 may be replaced with the upper pile (11) of the embodiment illustrated in FIG. 2, which also falls within the scope of the present invention. Furthermore, the lower pile (26) in the embodiment illustrated in FIG. 6 may be replaced with the lower pile (26) of the embodiment illustrated in FIG. 2, which also falls within the scope of the present invention.

[0061] Fig. 7 illustrates a state in which two piles are connected by a pile connection device according to another embodiment of the present invention. Referring to Fig. 7, an upper pile (31) and a lower pile (16), which are arranged in sequence along the height direction, are connected by a pile connection device (300) according to another embodiment of the present invention. The pile connection device (300) illustrated in Fig. 7 is applied to the configuration of a composite pile.

[0062] In this embodiment, the upper pile (31) is a conventional pipe pile having excellent horizontal resistance, and the lower pile (16) is a conventional PHC pile having excellent axial resistance, and is substantially identical in configuration to the lower pile (16) illustrated in FIG. 2. Although not illustrated, the lower pile (26) of the embodiment illustrated in FIG. 6 may be applied as the lower pile (16), and this also falls within the scope of the present invention.

[0063] The upper pile (31) and the lower pile (16) are connected by a pile connection device (300) according to another embodiment of the present invention. The pile connection device (300) according to another embodiment of the present invention includes an upper connection plate member (120) fixed to the upper pile (31), a lower pile connection portion (150) provided on the lower pile (16), a plurality of coupling pins (190) for connecting the upper connection plate member (120) and the lower pile connection portion (150), and a plurality of patching portions (195) for preventing external exposure of the plurality of coupling pins (190).

[0064] The upper connecting plate member (120) has a configuration substantially identical to that of the upper connecting plate member (120) of the embodiment illustrated in FIG. 2, and therefore, a detailed description thereof is omitted herein. The upper connecting plate member (120) is welded to the lower end of the upper pile (31), which is a steel pipe pile. The welding work for joining the upper connecting plate member (120) and the upper pile (31) is performed before the pile connection process is performed at the pile construction site.

[0065] The lower pile connection (150) has a configuration substantially identical to that of the lower pile connection (150) of the embodiment illustrated in FIG. 2, and therefore, a detailed description thereof is omitted here. The lower pile connection (150) is formed integrally with the lower pile (16) during the manufacturing process of the lower pile (16), which is a PHC pile.

[0066] Since the plurality of coupling pins (190) have a configuration substantially identical to that of the plurality of coupling pins (190) of the embodiment illustrated in FIG. 2, a detailed description thereof is omitted here.

[0067] Since the plurality of patching parts (195) have a configuration substantially identical to that of the plurality of patching parts (195) of the embodiment illustrated in FIG. 2, a detailed description thereof is omitted here.

[0068] According to the pile connection device (300) described with reference to Fig. 7, a pile connection process for configuring a composite pile can be performed without welding and bolting operations at a pile construction site. At the pile construction site, in order to connect the upper pile (31) and the lower pile (16), only the work of positioning the upper pile (31), which is a steel pipe pile, on the lower pile (16), which is a PHC pile, the process of inserting a plurality of coupling pins (190) to couple the upper connection plate member (120) and the lower connection plate member (160), and the patching work of forming a plurality of patching portions (195) are performed.

[0069] Although not shown, the lower pile (16) in the embodiment shown in FIG. 7 may be replaced with a lower pile (26) of the configuration shown in FIG. 6, which also falls within the scope of the present invention.

[0070] While the present invention has been described through the above examples, the present invention is not limited thereto. The above examples may be modified or altered without departing from the spirit and scope of the present invention, and those skilled in the art will recognize that such modifications and variations also fall within the scope of the present invention.

Claims

1. A device that connects the upper pile and the lower pile. An upper connecting plate member fixed to the lower end of the upper pile; A lower connecting plate member fixed to the top of the lower pile; and It includes a plurality of connecting pins that connect the upper connecting plate member and the lower connecting plate member, One of the upper connecting plate member and the lower connecting plate member has an outer protruding wall portion formed by extending along the circumferential direction and protruding along the longitudinal direction of the pile, and the other member has an inner protruding wall portion formed by extending along the circumferential direction and protruding along the longitudinal direction of the pile and resting on the inner area of ​​the outer protruding wall portion. In the above outer protruding wall portion, a plurality of pin insertion holes are formed, arranged sequentially along the circumferential direction. In the inner protruding wall portion above, a plurality of pin insertion grooves are formed that are arranged in sequence along the circumferential direction. Each of the above plurality of pin insertion holes extends radially and penetrates the outer protruding wall portion, Each of the above plurality of pin insertion grooves extends along the radial direction, Each of the above plurality of coupling pins is installed by being inserted into the pin insertion hole and the pin insertion groove. Pile connector.

2. In claim 1, One of the upper connecting plate members and the lower connecting plate members has an insertion projection formed by protruding along the longitudinal direction of the pile, and the other member has a slit groove formed into which the insertion projection is inserted and seated. The insertion projection is seated in the slit groove, so that each of the plurality of pin insertion holes and each of the plurality of pin insertion grooves are aligned to correspond one to one. Pile connector.

3. In claim 1, The above-mentioned coupling pin is a spring pin that is elastically deformed so that the outer diameter can be varied. The above coupling pin fits snugly into the pin insertion hole and the pin insertion groove. Pile connector.

4. In claim 3, The above-mentioned coupling pin has a pin body in the form of a hollow metal tube, The above pin body has an opening formed that extends along the longitudinal direction, The above opening extends to both longitudinal ends of the pin body. Pile connector.

5. In claim 1, Further comprising a patching portion that fills the radially outer end opening of the pin insertion hole to prevent external exposure of the coupling pin. Pile connector.

6. In claim 1, The above upper connecting plate member is made of metal, The above upper connecting plate member is welded and fixed to the upper pile before the pile connecting process is performed at the pile construction site. Pile connector.

7. In claim 1, The above lower connecting plate member is made of metal, The above lower connecting plate member is welded and fixed to the lower pile before the pile connecting process is performed at the pile construction site. Pile connector.

8. A device connecting the upper pile, which is a PHC pile, and the lower pile, which is a PHC pile. An upper connecting plate member fixed to the lower end of the upper pile; A lower connecting plate member fixed to the top of the lower pile; and It includes a plurality of connecting pins that connect the upper connecting plate member and the lower connecting plate member, The above upper connecting plate member is formed during the manufacturing process of the above upper pile, The above lower connecting plate member is formed during the manufacturing process of the above lower pile, The above-mentioned coupling pin is a spring pin that is elastically deformed so that the outer diameter can be varied. Pile connector.

9. A device connecting the upper pile, which is a PHC pile, and the lower pile, which is a PHC pile. The above upper pile has an upper pile concrete body and a lower finishing plate member made of metal fixed to the lower surface of the upper pile concrete body. The above lower pile has a lower pile concrete body and a metal upper finishing plate member fixed to the upper surface of the lower pile concrete body. An upper connecting plate member made of metal that is fixed to the lower finishing plate member; A lower connecting plate member made of metal fixed to the upper finishing plate member; and It includes a plurality of connecting pins that connect the upper connecting plate member and the lower connecting plate member, The above upper connecting plate member is welded and fixed to the lower finishing plate member before the pile connecting process is performed at the pile construction site. The above lower connecting plate member is welded and fixed to the upper finishing plate member before the pile connecting process is performed at the pile construction site. The above-mentioned coupling pin is a spring pin that is elastically deformed so that the outer diameter can be varied. Pile connector.

10. A device connecting the upper pile, which is a PHC pile, and the lower pile, which is a PHC pile. The above upper pile has an upper pile concrete body and a lower finishing plate member made of metal fixed to the lower surface of the upper pile concrete body. An upper connecting plate member made of metal that is fixed to the lower finishing plate member; A lower connecting plate member fixed to the top of the lower pile; and It includes a plurality of connecting pins that connect the upper connecting plate member and the lower connecting plate member, The above upper connecting plate member is welded and fixed to the lower finishing plate member before the pile connecting process is performed at the pile construction site. The above lower connecting plate member is formed during the manufacturing process of the above lower pile. Pile connector.

11. A device connecting the upper pile, which is a PHC pile, and the lower pile, which is a PHC pile. The above lower pile has a lower pile concrete body and a metal upper finishing plate member fixed to the upper surface of the lower pile concrete body. A lower connecting plate member fixed to the lower end of the upper pile; A lower connecting plate member made of metal fixed to the upper finishing plate member; and It includes a plurality of connecting pins that connect the upper connecting plate member and the lower connecting plate member, The above upper connecting plate member is formed during the manufacturing process of the above upper pile, The above lower connecting plate member is welded and fixed to the upper finishing plate member before the pile connecting process is performed at the pile construction site. Pile connector.

12. A device that connects the upper pile, which is a steel pipe pile, and the lower pile, which is a PHC pile. An upper connecting plate member made of metal fixed to the lower end of the upper pile; A lower connecting plate member fixed to the top of the lower pile; and It includes a plurality of connecting pins that connect the upper connecting plate member and the lower connecting plate member, The above upper connecting plate member is welded and fixed to the lower end of the upper pile before the pile connecting process is performed at the pile construction site. The above lower connecting plate member is formed during the manufacturing process of the above lower pile. Pile connector.

13. A device connecting the upper pile, which is a steel pipe pile, and the lower pile, which is a PHC pile. The above lower pile has a lower pile concrete body and a metal upper finishing plate member fixed to the upper surface of the lower pile concrete body. An upper connecting plate member made of metal fixed to the lower end of the upper pile; A lower connecting plate member made of metal fixed to the upper finishing plate member; and It includes a plurality of connecting pins that connect the upper connecting plate member and the lower connecting plate member, The above upper connecting plate member is welded and fixed to the lower end of the upper pile before the pile connecting process is performed at the pile construction site. The above lower connecting plate member is welded and fixed to the upper finishing plate member before the pile connecting process is performed at the pile construction site. Pile connector.

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