WO2020242094A1 - Joint poutre-poteau en pc - Google Patents

Joint poutre-poteau en pc Download PDF

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Publication number
WO2020242094A1
WO2020242094A1 PCT/KR2020/006224 KR2020006224W WO2020242094A1 WO 2020242094 A1 WO2020242094 A1 WO 2020242094A1 KR 2020006224 W KR2020006224 W KR 2020006224W WO 2020242094 A1 WO2020242094 A1 WO 2020242094A1
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WO
WIPO (PCT)
Prior art keywords
column
bar
headed bar
headed
coupled
Prior art date
Application number
PCT/KR2020/006224
Other languages
English (en)
Korean (ko)
Inventor
김군삼
강토마스현구
성한석
Original Assignee
서울대학교 산학협력단
김군삼
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 서울대학교 산학협력단, 김군삼 filed Critical 서울대학교 산학협력단
Publication of WO2020242094A1 publication Critical patent/WO2020242094A1/fr

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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
    • E04B1/20—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of concrete, e.g. reinforced concrete, or other stonelike material
    • E04B1/21—Connections specially adapted therefor

Definitions

  • the enlarged head of the headed bar protruding from the end of the PC beam is fixed in the receiving space of the receiving socket embedded in one side of the PC column by a fixing cap nut. It is for a PC beam-column joint that is easy to manufacture and install, does not need a temporary support for PC beam support, and can minimize field work.
  • the cast-in-place reinforced concrete construction method is highly affected by the on-site environment and weather conditions, is manpower-intensive, so there is a limitation in shortening the time period, and quality control is difficult.
  • the application of the precast concrete method which manufactures members in factories and assembles them on site, is increasing, and in particular, after the introduction of the 52-hour working week system, the difficulty in operating on-site personnel has increased, leading to increased interest in the PC method.
  • the PC column of the upper layer and the PC column of the lower layer, which are connected to each other, are inserted between the upper and lower PC columns while spaced up and down by the height of the beam If possible, mount the PC beam on the bracket at the top of the lower PC post.
  • the present invention is to provide a PC beam-column joint that is easy to manufacture and install a PC member, does not require a temporary support for supporting the PC beam, and minimizes field work.
  • the present invention according to a preferred embodiment relates to a joint portion of a PC beam and a PC column, wherein a headed bar having an enlarged head formed at an end of the main body is coupled to protrude at the upper and lower ends of the PC beam, and one side of the PC column
  • the rear end is fixed to the fixing bar fixed in the PC column, and a receiving socket in which a receiving space into which the enlarged head of the headed bar is inserted is embedded in the front, and the enlarged head of the headed bar is a receiving socket by a fixed cap nut.
  • It provides a PC beam-column junction, characterized in that fixed in the receiving space of.
  • the present invention according to another preferred embodiment is provided with a coupler coupled to the end of the main reinforcement inside the PC beam at the end of the PC beam, the main body of the headed bar is a PC beam-column joint, characterized in that coupled to the coupler Provides.
  • the present invention according to another preferred embodiment provides a PC beam-column joint, characterized in that a lock nut in close contact with the coupler is coupled to the body of the headed bar.
  • the present invention according to another preferred embodiment provides a PC beam-column joint, characterized in that the fixing bar is configured to yield earlier than the headed bar.
  • the present invention is a PC beam-column joint, characterized in that the mounting bracket is coupled to one side of the PC pillar to which the PC beam is joined, and is inserted into and supported in the mounting groove formed in the lower center of the end of the PC beam Provides.
  • the main reinforcement of the PC beam is connected to the receiving socket by the headed bar. Accordingly, it is possible to form a special moment frame that can secure ductility while forming a strong connection at the PC beam-column connection.
  • the headed bar can smoothly transmit tensile or compressive force to the inside of the column with respect to the bending moment of the joint.
  • the headed bar when the main body of the headed bar is coupled to the coupler coupled to the end of the main reinforcement inside the PC beam, the headed bar does not protrude outside the PC beam during the process of manufacturing and transferring the PC beam. Therefore, it is easy to manufacture and install PC beams.
  • 1 is a view showing a connection between a conventional PC beam and a PC column.
  • Figure 2 is a perspective view showing the bonding relationship between the PC beam and the PC column.
  • Figure 3 is a perspective view showing the coupling relationship between the main reinforcement bar, headed bar and fixed cap nut of the PC beam.
  • FIG. 4 is a cross-sectional view showing a coupling relationship between a headed bar and a fixed cap nut.
  • FIG. 5 is a perspective view showing a coupling relationship between a headed bar and a receiving socket.
  • FIG. 6 is a cross-sectional view showing a state in which the headed bar is fixed in the receiving socket.
  • FIG. 7 is a cross-sectional view showing a coupling relationship between a headed bar when a coupler is provided.
  • Figure 8 is a perspective view showing the coupling relationship between the mounting bracket and the PC post.
  • FIG. 9 is a perspective view showing the coupling relationship between the PC beam and the PC column by the mounting bracket.
  • FIG. 10 is a cross-sectional view showing a coupling relationship between a PC beam and a PC column when the mounting bracket is provided.
  • FIG. 11 is a perspective view showing another embodiment of the mounting bracket.
  • FIG. 12 is a perspective view showing a bonding state between upper and lower PC posts.
  • the PC beam-column connection part of the present invention relates to a connection part between a PC beam and a PC column, and a headed bar having an enlarged head formed at the end of the body protrudes above and below the PC beam end. It is coupled, and the rear end is fixed to the fixing bar fixed in the PC column on one side of the PC column, and a receiving socket in which an accommodation space into which the enlarged head of the headed bar is inserted is embedded in the front, and the headed bar is expanded. It is characterized in that the head is fixed in the receiving space of the receiving socket by the fixing cap nut.
  • FIG. 2 is a perspective view showing the bonding relationship between the PC beam and the PC column
  • FIG. 3 is a perspective view showing the bonding relationship between the main reinforcement bar, the headed bar, and the fixed cap nut of the PC beam
  • Figure 4 is a cross-sectional view showing the coupling relationship between the headed bar and the fixing cap nut
  • Figure 5 is a perspective view showing the coupling relationship between the headed bar and the accommodation socket
  • Figure 6 is a cross-sectional view showing a state in which the headed bar is fixed in the accommodation socket. .
  • the PC beam-column connection of the present invention relates to a connection between the PC beam 1 and the PC column 2, and the upper and lower ends of the PC beam 1 have a main body (
  • the headed bar 12 having the enlarged head 122 formed at the end of 121 is coupled to protrude, and the rear end of the fixing bar 21 fixed in the PC post 2 on one side of the PC post 2
  • the present invention is to provide a PC beam-column joint that is easy to manufacture and install a PC member, does not require a temporary support for supporting the PC beam (1), and can minimize field work.
  • the headed bar 12 is coupled to the upper and lower ends of the PC beam 1 so as to protrude.
  • the headed bar 12 has an enlarged head 122 formed at an end of the main body 121.
  • a receiving socket 22 into which the headed bar 12 is inserted is embedded in one side of the PC pillar 2 at a position corresponding to the headed bar 12.
  • the receiving socket 22 has a receiving space 221 formed therein.
  • the enlarged head 122 of the headed bar 12 After inserting the enlarged head 122 of the headed bar 12 into the receiving space 221 of the receiving socket 22, close to the bottom of the receiving space 221, the enlarged head part with a fixed cap nut 13 (122) is fixed in the receiving space 221 of the receiving socket 22.
  • the fixed cap nut 13 has a through hole 131 formed in the center so that the main body 121 of the headed bar 12 penetrates, and the enlarged head 122 of the headed bar 12 is caught at the front end.
  • a fixing cap nut 13 having a screw thread on the outer circumferential surface and a receiving socket 22 having a female thread on the inner circumferential surface of the receiving space 221 are prepared. And, as shown in (b) of FIG. 5, the enlarged head 122 of the headed bar 12 is inserted into the receiving space 221 of the receiving socket 22.
  • the fixed cap nut 13 is moved forward into the receiving space 221 by rotation of the fixed cap nut 13 and screwed into the receiving socket 22.
  • the fixing cap nut 13 presses the enlarged head 122 of the headed bar 12 to make it in close contact with the bottom surface of the receiving space 221.
  • a polygonal tool coupling portion 132 may be formed on the outer circumferential surface of the fixed cap nut 13 to rotate the fixed cap nut 13.
  • the fixing cap nut 13 can be fastened only by rotation, it can be easily operated without an additional power source.
  • the rear end of the receiving socket 22 to which the fixing bar 21 is coupled is preferably formed in a streamlined shape so as to smoothly transfer stress to tension or compression without concentration of stress.
  • the main body 121 of the headed bar 12 may be configured to be continuous with the main reinforcing bars 11 located in the upper and lower portions of the PC beam 1.
  • the main reinforcing bar 11 of the PC beam 1 is connected to the receiving socket 22 by the headed bar 12 to form a special moment frame capable of securing ductility while forming a strong connection at the beam-column joint. Can be formed.
  • the headed bar 12 is continuous with the main reinforcing bar 11 inside the PC beam 1 to transmit a tensile or compressive force to the inside of the PC column 2 with respect to the bending moment of the joint.
  • the enlarged head 122 of the headed bar 12 is caught by the fixing cap nut 13 and is loaded onto the fixing bar 21 by tensioning the receiving socket 22. Is delivered.
  • the PC beam 1 is directly bonded to the side of the PC pillar 2.
  • the non-shrinkable mortar 3 may be filled in the empty space between the end of the PC beam 1 and the surface of the PC pillar 2.
  • the fixed cap nut 13 can be firmly fixed by the filled non-shrinkable mortar 3.
  • a stepped portion 14 for mounting a PC slab may be formed on the upper surface of the PC beam 1.
  • the fixing bar 21 may be configured to yield earlier than the headed bar 12.
  • the distance between the PC column 2 and the PC beam 1 is quite wide, and only the non-shrinkable mortar 3 is filled outside the headed bar 12, and there is no separate strip reinforcement. That is, since the headed bar 12 is an unconstrained section, when the headed bar 12 yields, the ductile behavior of the joint is difficult.
  • the yield strength of the anchoring bar 21 is lower than the yield strength of the headed bar 12. Can be formed.
  • the headed bar 12 may first yield by adjusting the yield strength and cross-sectional area, that is, the diameter of the fixing bar 21 and the headed bar 12 in detail.
  • the fixing bar 21 may use a steel bar having a yield strength (F y ) 800 MPa and a diameter of 45 mm. have.
  • FIG. 7 is a cross-sectional view showing a coupling relationship between a headed bar when a coupler is provided.
  • the end of the PC beam 1 is provided with a coupler 16 coupled to the end of the main reinforcement 11 inside the PC beam 1, the main body of the headed bar 12 ( 121 may be configured to be coupled to the coupler 16.
  • the inside of the PC beam (1) can be connected to the headed bar (12) before installation of the PC beam (1).
  • the coupler 16 coupled to the main reinforcement 11 may be embedded in the end of the PC beam 1.
  • the entire PC beam 1 in which the headed bar 12 is installed has a length of the PC column 2 ) Must be larger than the distance between them.
  • the PC beam 1 is mounted on a mounting bracket 23 to be described later, and then, FIG. 7 As shown in (b) of, the headed bar 12 is rotated to move horizontally into the receiving socket 22 and inserted into the receiving space 221.
  • a lock nut 17 in close contact with the coupler 16 may be coupled to the body 121 of the headed bar 12.
  • a lock nut 17 is attached to the main body 121 of the headed bar 12 to fix the position of the headed bar 12. Can be combined.
  • the lock nut 17 is firmly fixed in the non-shrinkable mortar 3 after curing the non-shrinkable mortar 3.
  • FIG 8 is a perspective view showing the coupling relationship between the mounting bracket and the PC post
  • Figure 9 is a perspective view showing the coupling relationship between the PC beam and the PC post by the mounting bracket
  • Figure 10 is a PC beam and a PC when equipped with a mounting bracket It is a cross-sectional view showing the coupling relationship between the pillars.
  • Figure 11 is a perspective view showing another embodiment of the mounting bracket.
  • a mounting bracket 23 is coupled to one side of the PC column 2 to which the PC beam 1 is joined, and is formed in the lower center of the end of the PC beam 1 It can be configured to be supported by being inserted into the groove (15).
  • a mounting bracket 23 may be coupled to one side of the PC pillar 2 so as to protrude outward.
  • the PC beam 1 may be formed with a mounting groove 15 into which the mounting bracket 23 can be inserted at a lower center of the end.
  • the mounting groove 15 of the PC beam 1 is inserted into the mounting bracket 23 so that the PC beam 1 is mounted on the mounting bracket 23, and the headed bar 12 is a receiving socket. Can be easily fixed to (22).
  • the mounting bracket 23 supports the PC beam 1 until the headed bar 12 is fixed, and transmits a shear force at the junction.
  • the PC beam 1 can be supported simply by descending from the top to the bottom so that the mounting groove 15 is inserted into the mounting bracket 23 to be mounted.
  • the mounting groove 15 may be formed with an air hole 151 communicating with the upper surface of the PC beam (1).
  • an embedded plate 24 for coupling the mounting bracket 23 may be embedded in the PC post 2 in advance.
  • the mounting bracket 23 can be fixed to the embedded iron plate 24 by a bolt 25.
  • An uneven portion may be formed in a horizontal direction on a front surface of the buried iron plate 24 and a rear surface of the mounting bracket 23, respectively.
  • the mounting bracket 23 has a rounded top so that the mounting bracket 23 can be easily inserted into the mounting groove 15 when mounting the PC beam 1 on the top. I can.
  • FIG. 12 is a perspective view showing a state of bonding between upper and lower PC posts.
  • a pocket portion 27 is formed at the lower end of the upper PC pillar 2'to be headed in the pocket portion 27. It is possible to make the bar 28 protrude. And by embedding the receiving socket 26 on the upper end of the lower PC post (2), it can be configured to be fixed with the fixing cap nut 29 in the same manner as the present invention PC beam-column joint.
  • the PC beam-column joint of the present invention is fixed in the receiving space of the receiving socket embedded in one side of the PC column by a fixing cap nut to the enlarged head of the headed bar protrudingly coupled to the end of the PC beam. Direct bonding is possible. Accordingly, manufacturing and installation of the PC member is easy, there is no need for temporary support for supporting the PC beam, and there is a possibility of industrial use in that field work can be minimized.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Joining Of Building Structures In Genera (AREA)

Abstract

La présente invention concerne un joint poutre-poteau en PC. Lorsqu'une poutre en PC et une colonne en PC sont raccordées, une partie tête agrandie d'une barre supérieure qui fait saillie/est couplée à une extrémité de la barre en PC est fixée à l'intérieur d'un espace de réception d'un manchon de réception enterré dans une surface latérale de la colonne en PC par un écrou borgne de fixation, ce qui facilite la fabrication et l'installation d'un élément en PC, réalisant un support provisoire pour supporter la poutre en PC inutile, et permettant de réduire au minimum les opérations sur le terrain. La présente invention concerne un joint poutre-poteau en PC se rapportant à un joint entre une poutre en PC et un poteau en PC, caractérisé en ce qu'une barre supérieure ayant une partie tête agrandie formée sur une extrémité de son corps est couplée, de façon à faire saillie, vers les parties supérieure et inférieure d'une extrémité de la poutre en PC ; un manchon de réception est enterré dans une surface latérale du poteau en PC de telle sorte que son extrémité arrière est fixée à une barre d'ancrage ancrée dans le poteau en PC, le manchon de réception ayant un espace de réception formé à l'intérieur de celui-ci de telle sorte que la partie de tête agrandie de la barre supérieure est insérée dans l'avant de celle-ci ; et la partie de tête agrandie de la barre supérieure est fixée à l'intérieur de l'espace de réception du manchon de réception par un écrou borgne de fixation.
PCT/KR2020/006224 2019-05-29 2020-05-12 Joint poutre-poteau en pc WO2020242094A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020190063371A KR102114890B1 (ko) 2019-05-29 2019-05-29 Pc 보-기둥 접합부
KR10-2019-0063371 2019-05-29

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WO2020242094A1 true WO2020242094A1 (fr) 2020-12-03

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Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102339884B1 (ko) * 2020-08-21 2021-12-17 에스피씨이 주식회사 프리캐스트 콘크리트 기둥과 보의 철근 접합 장치
KR102349440B1 (ko) * 2021-07-06 2022-01-11 서울대학교 산학협력단 Pc 슬래브용 접합구 및 이를 이용한 pc 슬래브 접합 구조
KR102673775B1 (ko) * 2022-08-05 2024-06-10 신세계건설(주) Pc기둥과 pc보의 기계적이음을 이용한 접합부 구조

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010185181A (ja) * 2009-02-10 2010-08-26 Shimizu Corp コンクリート部材の接合構造
JP2012207414A (ja) * 2011-03-29 2012-10-25 Takenaka Komuten Co Ltd 鉄筋コンクリート製の梁の接合構造
KR20150083217A (ko) * 2014-01-09 2015-07-17 최낙현 프리캐스트블럭연결장치
KR101568194B1 (ko) * 2014-12-15 2015-11-12 (주)서현컨스텍 Pc부재 연결방법 및 이를 이용하여 시공된 pc구조물
KR20180003162U (ko) * 2017-04-27 2018-11-06 진언식 프리캐스트 콘크리트 연결구

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010185181A (ja) * 2009-02-10 2010-08-26 Shimizu Corp コンクリート部材の接合構造
JP2012207414A (ja) * 2011-03-29 2012-10-25 Takenaka Komuten Co Ltd 鉄筋コンクリート製の梁の接合構造
KR20150083217A (ko) * 2014-01-09 2015-07-17 최낙현 프리캐스트블럭연결장치
KR101568194B1 (ko) * 2014-12-15 2015-11-12 (주)서현컨스텍 Pc부재 연결방법 및 이를 이용하여 시공된 pc구조물
KR20180003162U (ko) * 2017-04-27 2018-11-06 진언식 프리캐스트 콘크리트 연결구

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