WO2021045261A1 - Dispositif de raccordement de pieux et procédé de raccordement de pieux l'utilisant - Google Patents

Dispositif de raccordement de pieux et procédé de raccordement de pieux l'utilisant Download PDF

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Publication number
WO2021045261A1
WO2021045261A1 PCT/KR2019/011443 KR2019011443W WO2021045261A1 WO 2021045261 A1 WO2021045261 A1 WO 2021045261A1 KR 2019011443 W KR2019011443 W KR 2019011443W WO 2021045261 A1 WO2021045261 A1 WO 2021045261A1
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WIPO (PCT)
Prior art keywords
pile
joint plate
bolt
hole
protrusion
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Application number
PCT/KR2019/011443
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English (en)
Korean (ko)
Inventor
백기원
백예지
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백기원
백예지
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Publication of WO2021045261A1 publication Critical patent/WO2021045261A1/fr

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    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
    • E02D5/22—Piles
    • E02D5/52—Piles composed of separable parts, e.g. telescopic tubes ; Piles composed of segments
    • E02D5/523—Piles composed of separable parts, e.g. telescopic tubes ; Piles composed of segments composed of segments
    • E02D5/526—Connection means between pile segments
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
    • E02D5/22—Piles
    • E02D5/52—Piles composed of separable parts, e.g. telescopic tubes ; Piles composed of segments
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D2600/00—Miscellaneous
    • E02D2600/20—Miscellaneous comprising details of connection between elements

Definitions

  • the present invention relates to a pile, and more particularly, when a compression pad installed on the head of a bolt fixing a joint plate to the pile is pressed by pressure by the weight of the upper pile to drive the connection pile to which the lower pile and the upper pile are connected. , It relates to a pile connection device capable of preventing the bolt from loosening due to driving vibration, and a pile connection method using the same.
  • piles having the same diameter must be connected to each other in case the depth of the supporting layer is deep, such as soft ground.
  • the previously registered patent is a lower joint plate that is bolted to the head of the lower pile by forming a radially inclined lower protrusion and lower groove on the upper surface, and the lower surface to engage the lower protrusion and lower groove of the lower joint plate.
  • the inclined upper protrusion and the upper groove are radially formed to the upper joint plate that is bolted to the tip of the upper pile, the lower protrusion of the lower joint plate and the fastening hole formed on one or both sides of the upper protrusion of the upper joint plate, and the fastening hole. It is a configuration including a pinhole provided in a successively inclined shape, and a fastening fixing member fastened and fixed to the pinhole.
  • an object of the present invention is a pile connecting device capable of easily matching the centers of the lower and upper piles by forming the protruding sides of each joint plate in an inclined manner, and using the same. It is to provide a method of connecting piles.
  • another object of the present invention is that the crimping pad installed on the head of the bolt fixing the joint plate to the pile is compressed by pressure by the self-weight of the upper pile, so that the bolt is released by driving vibration when driving the connection pile to which the pile is connected. It is to provide a pile connection device and a pile connection method using the same.
  • another object of the present invention is to increase the connection force between the lower pile and the upper pile by preventing the horizontal pin from being separated or loosened by the driving vibration due to the horizontal pin being elastically coupled to the pinhole or fixed to the pinhole. It is to provide a pile connection device that can be made and a pile connection method using the same.
  • the present invention pile connecting device the lower protrusion radially protrudes on the surface, the lower joint plate fastened and fixed with a lower bolt to the head of the lower pile;
  • An upper joint plate having an upper protrusion radially protruding on a lower surface of the lower joint plate so as to be engaged between the lower protrusions of the lower joint plate, and fastened and fixed with an upper bolt to the tip of the upper pile;
  • a compression pad installed on the head of the lower bolt and the upper bolt;
  • a horizontal pin coupled to the pinhole, wherein the pressing pad is compressed to the head of each bolt by pressing by its own weight of the upper pile when connecting the upper pile and the lower pile to prevent loosening of the bolt due to driving vibration do.
  • the lower joint plate a lower plate body; A lower protrusion radially protruding from the upper surface of the lower plate body; It may include a; first lower through hole penetrated into the inner portion of the lower protrusion for fastening the lower bolt. And a second lower through-hole penetrating through the lower plate body between the lower protrusions to accommodate the head of the upper bolt protruding below the lower surface of the upper protrusion.
  • the compression pad installed on the head of the lower and upper bolts may be made of a compressible elastic material such as a rubber material. The compression pad may be adhesively fixed to the bolt head.
  • the pinhole may be formed as an inclined hole that is inclined to be narrower inside than the outside, or a horizontal hole may be extended at an end of the inclined hole.
  • the horizontal pin includes a rod body in which a concave groove is formed, and an elastic piece that is pressably coupled to the concave groove.
  • the rod body is formed to have the same inner diameter as the pinhole.
  • the elastic piece includes an elastic body through which the inside is passed, and an opening cut at one side so that the elastic body can be compressed.
  • the method of connecting a pile of the present invention comprises: a lower joint plate fixing step of fastening and fixing a lower joint plate in which a lower protrusion radially protrudes on an upper surface with a lower bolt to the head of the lower pile; An upper joint plate fixing step of fastening and fixing the upper joint plate with the upper protrusion radially protruding on the lower surface thereof with an upper bolt to the tip of the upper pile; A lower pile insertion step of inserting the lower pile to which the lower joint plate is fixed into the service hole for connecting the piles; An upper pile mounting step of mounting an upper pile to which an upper joint plate is fixed on an upper part of the lower pile inserted into the service hole; A mounting completion step of seating the upper pile on the lower pile so that the upper protrusions of the upper joint plate are engaged between the lower protrusions of the lower joint plate, and pinholes are formed at one or both sides of the lower protrusion and the upper protrusion at the same time; A horizontal pin coupling step of inserting a horizontal pin into
  • the present invention is the method of connecting the piles.
  • each joint plate since the protrusion side of each joint plate is formed to be inclined so that the centers of the lower and upper piles can be easily matched, there is an effect of shortening the working time and improving the working efficiency through quick work.
  • the compression pad installed on the head of the bolt fixing the joint plate to the pile is pressed by the self-weight of the upper pile, and the bolt due to driving vibration when driving the connection pile connected to the lower pile and the upper pile. As it can prevent loosening of the pile, it has the effect of firmly constructing the pile joint.
  • the horizontal pin is elastically coupled to the pinhole or is fixed by being caught in the pinhole to prevent separation or relaxation of the coupling force of the horizontal pin due to driving vibration, thereby increasing the connection force between the lower pile and the upper pile.
  • it has the effect of improving the structural performance of the connecting pile.
  • Figure 2 is an exploded perspective view of a pile connecting device to which the present invention is applied
  • FIG. 3 is an exploded perspective view showing a lower joint plate and an upper joint plate of the pile connecting device to which the present invention is applied
  • Figure 4 is an exploded perspective view showing a horizontal pin of the pile connecting device to which the present invention is applied
  • 5 to 6 are schematic views showing the installation state of the pile connecting device to which the present invention is applied
  • FIG. 7 is a cross-sectional view showing a bolted portion of the pile connecting device to which the present invention is applied
  • FIG. 10 is an enlarged cross-sectional view of FIG. 9
  • FIG. 11 is an enlarged cross-sectional view showing another embodiment of a horizontal pin of the pile connecting device to which the present invention is applied
  • 13A to 13B are graphs showing the flexural performance test photos and the flexural performance test results of the pile connecting device to which the present invention is applied
  • 14A to 14B are graphs showing shear performance test photos and shear performance test results of the pile connecting device to which the present invention is applied
  • 15A to 15B are graphs showing tensile performance test photos and tensile performance test results of the pile connecting device to which the present invention is applied
  • 16A to 16B are graphs showing a photograph of a compression performance test and a result of a compression performance test of the pile connecting device to which the present invention is applied
  • 17A to 17C are photographs of a driving test confirming whether the bolt is loosened and whether the horizontal pin is separated in the pile connecting device to which the present invention is applied.
  • FIG. 1 is a flow chart of a pile connection method to which the present invention is applied
  • Fig. 2 is a separate perspective view of a pile connection device to which the present invention is applied
  • Fig. 3 is a separation showing the lower joint plate and the upper joint plate of the pile connection device to which the present invention is applied It is a perspective view.
  • the present invention pile connection device 100 as a device for connecting a plurality of piles, the lower joint plate 110, the upper joint plate 120, the compression pad 130, the pinhole 140, the horizontal pin 150 Includes.
  • the lower joint plate 110 is fastened and fixed to the head of the lower pile 10 with a lower bolt (S), and is composed of a lower plate body 111, a lower protrusion 112, and a first lower through hole 113. .
  • the lower plate body 111 is a plate body that is in close contact with the head of the lower pile 10.
  • the lower protrusion 112 is a protrusion radially protruding from the upper surface of the lower plate body 111, and the side surface protrudes obliquely.
  • the first lower through hole 113 is a through hole through which the lower bolt S is moved into the lower protrusion 112.
  • a second lower through hole 114 is formed through the lower plate body 111 between the lower protrusions 112 so that the head of the upper bolt S′ protruding below the lower surface of the upper protrusion 122 is accommodated.
  • a receiving groove 115 is formed on the lower surface of the lower joint plate 110 to accommodate the PC nut on the same line as the PC nut of the lower pile 10.
  • the upper joint plate 120 is fastened and fixed to the front end of the upper pile 120 with an upper bolt (S'), and consists of an upper plate body 121, an upper protrusion 122, and a first upper through hole 123 do.
  • the upper plate body 121 is a plate body that is in close contact with the tip of the upper pile 20.
  • the upper protrusion 122 is a protrusion radially protruding from the lower surface of the upper plate body 121, and the side surface may protrude obliquely.
  • the first upper through hole 123 is a through hole through which the upper bolt S'is moved in the upper protrusion 122.
  • a second upper through hole 124 is formed through the upper plate body 121 between the upper protrusions 122 to accommodate the head of the lower bolt S protruding above the upper surface of the lower protrusion 112.
  • a receiving groove 125 is formed on the upper surface of the upper joint plate 120 to accommodate the PC nut on the same line as the PC nut of the upper pile 20.
  • the compression pad 130 is configured to be installed on the head of the lower bolt S and the upper bolt S', and is made of a compressible elastic material such as a compressible rubber material.
  • the compression pad 130 is fixed to the bolt head with an adhesive or the like.
  • the configuration is formed through the side or both sides, it may be formed by 1/2 on each protrusion.
  • the pinhole 140 is formed as an inclined hole 141 that is inclined so that the inner side is narrower than the outer side.
  • the pinhole 140 has a horizontal hole 142 extending horizontally at an end of the inclined hole 141.
  • the horizontal pin 150 is configured to be coupled to the pin hole 140, as shown in FIG. 4, and includes a rod body 151, a concave groove 152, and an elastic piece 153.
  • the rod body 151 is coupled to the pinhole 140 and has an inclined outer surface.
  • the concave groove 152 is formed in a concave end portion of the rod body 151, that is, an end portion first coupled to the pinhole 140.
  • the elastic piece 153 is coupled to the concave groove 152 and is in close contact with the inner surface of the pinhole 140, and includes an elastic body 154 and an opening 155.
  • the elastic body 154 has a shape of a hollow portion through which the inside is penetrated.
  • the opening 155 is a portion opened on one side of the elastic body 154 and may be coupled to the concave groove 152 by this portion having elasticity.
  • the elastic piece 153 elastically adheres to the inner surface of the pinhole 140 as the diameter of the pinhole 140 decreases toward the inside, thereby causing a horizontal pin by driving vibration. 150 serves to prevent the pinhole 140 from separating or loosening the coupling force.
  • the lower joint plate 110 having the lower protrusion 112 and the first lower through hole 113 formed on the lower plate body 111 is in close contact with the upper surface of the lower pile 10, that is, to the head.
  • the receiving groove 115 formed on the lower surface of the lower joint plate 110 must be located on the same line as the PC nut of the lower pile 10, and at this time, the end of the PC nut protrudes from the upper surface of the lower pile 10. In the case, the end of the PC nut is accommodated in the receiving groove 115.
  • the lower joint plate 110 is bolted to the lower pile 10 while the PC nut protrudes from the upper surface of the lower pile 10.
  • the PC nut is compressed in the direction of the main body of the lower pile 10 by the lower joint plate 110, a longitudinal crack occurs in the lower pile 10, and the receiving groove 115 prevents this phenomenon. It is to do.
  • the lower bolt S is coupled to the first lower through hole 113 of the lower joint plate 110, and the PC nut of the lower pile 10 By fastening to the lower joint plate 110 is fixed to the head of the lower pile (10).
  • the upper joint plate 120 having the upper protrusion 122 and the first upper through hole 123 formed on the upper plate body 121 is in close contact with the lower surface of the upper pile 20, that is, the tip.
  • the receiving groove 125 formed on the upper surface of the upper joint plate 120 must be located on the same line as the PC nut of the upper pile 20, and at this time, the end of the PC nut protrudes from the lower surface of the upper pile 20. In the case, the end of the PC nut is accommodated in the receiving groove (125).
  • the upper joint plate 120 is bolted to the upper pile 20 while the PC nut protrudes from the bottom of the upper pile 20 When doing so, as the PC nut is compressed in the direction of the main body of the upper pile 20 by the upper joint plate 120, a longitudinal crack occurs in the upper pile 20, and the receiving groove 125 prevents this phenomenon. It is to do.
  • the upper bolt (S') is coupled to the first upper through hole 123 of the upper joint plate 120, and the PC of the upper pile 20
  • the upper joint plate 120 is fixed to the upper pile 20 by fastening it to the nut.
  • the head of the lower and upper bolts S (S') to which the compression pad 130 is attached protrudes from the upper and lower surfaces of the lower and upper protrusions 112 and 122.
  • the compression pad 130 installed on the head of the lower and upper bolts (S) (S') is the lower and upper bolts (S) due to the pressure on the lower and upper surfaces of the upper and lower piles by the weight of the upper piles 20.
  • the compression pad 130 attached to the head of the lower and upper bolts (S) (S') is compressed by the lower and upper surfaces of the upper and lower piles by pressing by the self-weight of 20), so that the bolts (S)(S' ) To prevent loosening.
  • the compression pad 130 is formed of an elastic material that can be compressed by the weight of the upper pile, and the compression pad 130 of the elastic material is preferably a rubber material having a certain strength.
  • the lower pile 10 is lifted with a lifting device to lift the pile. It is inserted into the service hole drilled in the ground for connection.
  • the upper end of the lower pile 10 inserted into the service hole must be located above the service hole, and the upper pile 20 is lifted by a lifting device and mounted on the upper part of the lower pile 10.
  • the working time can be shortened by improving work efficiency.
  • the compression pad 130 installed on the head of the lower bolt (S) and the upper bolt (S') is understood by the weight of the upper pile (20) Is compressed by the lower end of the upper pile 20 and the upper end of the lower pile 10, and at the same time, the compression pad 130 is compressed to the head of the bolt (S) (S') to reduce the compression stress and frictional stress. cause. Therefore, during driving of the connecting pile, the bolt (S) (S') is released by catching the compressive stress and frictional stress acting on the compression pad 130 by the force that the bolt (S) (S') is about to be released by the driving vibration. Prevent.
  • the bolt in order for the bolt (S) (S') to be released by driving vibration, the bolt must move in the direction of the head while rotating in the opposite direction, but the rotation of the bolt is suppressed by the frictional stress generated by the compression pad 130. Movement in the head direction is suppressed by the compression stress generated by the compression pad 130 to suppress the loosening of the bolt, and if the bolt is released and moves in the head direction, the compression pad 130 is further compressed to the bolt. Since the applied compressive stress and frictional stress become larger, loosening of the bolt becomes more difficult.
  • the pinhole 140 may be formed as an inclined hole 141 that is inclined to be narrower inside than the outside, and a horizontal hole 142 may be extended to an end of the inclined hole 141 to be formed.
  • each of the protrusions 122 and 112 Since the side surfaces of each of the protrusions 122 and 112 are in close contact, the load distribution effect by each joint plate is excellent, so that the lower pile 10 and the upper pile 20 are connected by the pile connection device 100. Safety can be improved, and the protrusions 122 and 112 are formed in an inclined manner so that the central axis of the lower joint plate 110 and the upper joint plate 120 can be easily matched, so that the working time can be shortened by improving work efficiency. I can.
  • the joint construction of the pile may be completed. Since the horizontal pin 150 has an outer diameter of the elastic piece 153 coupled to the concave groove 152 of the rod body 151 is smaller than the outer inner diameter of the inclined hole 141 of the pinhole 140, the inside of the inclined hole 141 It can be moved smoothly.
  • the horizontal pin 150 When the horizontal pin 150 is moved a certain distance into the inclined hole 141, the elastic body 154 of the elastic piece 153 is in close contact with the inner surface of the inclined hole 141, and in this state, the horizontal pin 150 When hitting the rod body 151 of, the horizontal pin 150 is the elastic body 154 of the elastic piece 153 along the inner diameter of the inclined hole 141 into the concave groove 152 around the opening 155 As it retracts, it moves into the inclined hole 141.
  • the elastic piece 153 is retracted along the inner diameter of the inclined hole 141 and passed through the inclined hole 141, and then moved to the horizontal hole 142, and then moved to the horizontal hole 142.
  • the outer surface of the piece 153 is elastically adhered to the inner surface of the horizontal hole 142 and at the same time, the outer surface of the rod body 151 is in close contact with the inner surface of the inclined hole 141, and the lower part is coupled to the lower pile 10 and the upper pile 20.
  • the joint plate 110 and the upper joint plate 120 may be firmly connected.
  • the outer surface of the elastic piece 153 is in elastic contact with the inner surface of the horizontal hole 142, and the outer surface of the rod body 151 is in close contact with the inner surface of the inclined hole 141, so that the horizontal pin 150 and the lower/upper joint plate
  • 11 is a horizontal hole having the same inner diameter over the entire length of a plurality of elastic pieces (153', 153") instead of coupling the horizontal pin 150 composed of the rod body 151 and the elastic piece 154 to the pinhole 140
  • the horizontal pin 150 coupled by hitting the pinhole 140 is a horizontal hole
  • the first elastic piece 153' having the same shape as the horizontal hole 142 and having an opening 155' while having the same shape as the horizontal hole 142, and a first elasticity inserted into the horizontal hole 142
  • It is composed of a second elastic piece 153" having the same shape as the piece 153' and having an outer diameter slightly larger than the inner diameter of the first elastic piece 153'.
  • the second elastic piece 153" is pressed to the inner diameter of the first elastic piece 153' and pressed so that the entire outer diameter of the second elastic piece 153" becomes the first elastic piece 153'.
  • the first and second elastic pieces 153 ′ and 153 ′′ coupled to each other while being compressed into the pinhole 140 have the same function as the horizontal pin 150 described above.
  • the openings 155 ′ and 155 ′′ of, 153 ′′ are directed upward and downward, respectively, so that the strength of the first elastic piece 153 ′ and the second elastic piece 153 ′′ is maximized.
  • a plurality of elastic pieces having the same shape as the first and second elastic pieces 153 ′ and 153 ′′ are used as the first and second elastic pieces in the same manner as described above. It may be further installed on the elastic pieces (153', 153").
  • the horizontal pin 150 ′ allows the elastic piece 153 to pass through the horizontal hole 142 to expand and restore itself to elasticity, so that the end of the elastic piece 153 is each protrusion 112, 122 ) By being in close contact with the inner surface to prevent separation of the horizontal pin 150 from the pinhole 140 by driving vibration, and the lower joint plate 110 coupled to the lower pile 10 and the upper pile 20 It is possible to increase the connection force of the upper joint plate 120.
  • connection pile to which the lower pile 10 and the upper pile 20 are connected can be driven and penetrated into the ground, and when the connection pile is driven, the compression pad 130 is provided with the lower bolt (S) and the upper bolt (S'). ) Is compressed to the head of each bolt (S) (S') to prevent loosening, and at the same time, the lower joint plate 110 and the upper joint plate 120 coupled to the lower pile 10 and the upper pile 20 It is possible to increase the connection strength of the pile while easily constructing the pile connection by elastically combining the horizontal pin 150.
  • FIG. 13A is a photograph of the flexural performance test
  • FIG. 13B is a graph showing the measured test results. to be.
  • FIG. 14A is a photograph of the shear performance test
  • FIG. 14B is a graph showing the measured test results.
  • FIG. 15A is a photograph of a tensile performance test
  • FIG. 15B is a graph showing the measured test results.
  • Test method Tensile test for pile joints using a tensile jig
  • FIG. 16A is a photograph of a compression performance test
  • FIG. 16B is a graph showing the measured test results.
  • Test method Compression test for pile connection device
  • the pile connecting device 100 of the present invention has excellent performance that satisfies all of the reference values according to the KS F 4306 test.
  • connection state of the pile connection device 100 is very sturdy enough to be similar to the main body of the upper and lower piles 20 and 10. It was confirmed that the horizontal pin 150 was not separated from the pinhole 140 due to the driving vibration.

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  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Piles And Underground Anchors (AREA)

Abstract

La présente invention concerne un dispositif de raccordement de pieux comprenant : une plaque de liaison inférieure qui est accrochée et fixée à une partie de tête d'un pieu inférieur au moyen d'un boulon inférieur et dans laquelle des saillies inférieures font saillie radialement à partir de la surface supérieure de celle-ci ; une plaque de liaison supérieure qui est accrochée et fixée à la pointe d'un pieu supérieur au moyen d'un boulon supérieur et dans laquelle des saillies supérieures font saillie radialement à partir de la surface inférieure de celle-ci de manière à s'ajuster entre les saillies inférieures de la plaque de liaison inférieure ; des tampons de pression montés sur des parties de tête du boulon inférieur et du boulon supérieur ; des trous d'épingle formés à travers une surface ou les deux surfaces de chacune des saillies inférieures de la plaque de liaison inférieure et des saillies supérieures de la plaque de liaison supérieure ; et des broches horizontales couplées aux trous d'épingle, les tampons de pression sont pressés par le poids du pieu supérieur et sont ainsi pressés et fixés aux parties de tête des boulons, respectivement, empêchant ainsi les boulons de se desserrer sous l'effet des vibrations provenant du battage des pieux. Selon la présente invention, les centres des pieux inférieur et supérieur peuvent être facilement alignés en formant la surface latérale de chacune des saillies des plaques de raccordement à incliner. Ainsi, les heures de travail peuvent être raccourcies et l'efficacité du travail améliorée. Les tampons de pression montés sur les parties de tête des boulons fixant les plaques de liaison aux pieux sont pressés par le poids du pieu supérieur et sont ainsi pressés et fixés, les boulons peuvent être empêchés de se desserrer sous l'effet des vibrations d'entraînement lors du battage de pieu de raccordement reliant le pieu inférieur et le pieu supérieur grâce au dispositif de raccordement de pieux selon la présente invention. Ainsi, la présente invention a pour effet de pouvoir construire des raccordements de pieux solides.
PCT/KR2019/011443 2019-09-03 2019-09-05 Dispositif de raccordement de pieux et procédé de raccordement de pieux l'utilisant WO2021045261A1 (fr)

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KR102548386B1 (ko) * 2021-07-20 2023-06-26 백기원 Phc 말뚝의 연결장치

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KR20190001011U (ko) * 2017-10-20 2019-04-30 (주)성심씨앤엠 지반 강화용 파일의 연결장치
KR101983287B1 (ko) * 2018-06-12 2019-05-28 주식회사 택한 Phc 파일 연결구

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KR101958722B1 (ko) * 2017-04-27 2019-03-15 이용희 H-빔을 이용한 방음 터널에서의 빔 결합형 루프 판넬 고정장치

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Publication number Priority date Publication date Assignee Title
JP2015086620A (ja) * 2013-10-31 2015-05-07 シントク工業株式会社 相対回動防止構造
KR101803358B1 (ko) * 2014-03-21 2017-12-28 주식회사 파일웍스 콘크리트말뚝 연결장치 및 방법
KR101701123B1 (ko) * 2016-02-12 2017-02-01 김민각 콘크리트 파일 연결용 체결구 및 이를 이용한 콘크리트 파일 연결 방법
KR20190001011U (ko) * 2017-10-20 2019-04-30 (주)성심씨앤엠 지반 강화용 파일의 연결장치
KR101983287B1 (ko) * 2018-06-12 2019-05-28 주식회사 택한 Phc 파일 연결구

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