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WO2005031081A1 - Shear connector using perforated and/or cut out plate - Google Patents

Shear connector using perforated and/or cut out plate Download PDF

Info

Publication number
WO2005031081A1
WO2005031081A1 PCT/KR2004/001529 KR2004001529W WO2005031081A1 WO 2005031081 A1 WO2005031081 A1 WO 2005031081A1 KR 2004001529 W KR2004001529 W KR 2004001529W WO 2005031081 A1 WO2005031081 A1 WO 2005031081A1
Authority
WO
WIPO (PCT)
Prior art keywords
web
connector
flange
shear connector
concrete
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/KR2004/001529
Other languages
French (fr)
Inventor
Ki Hong Lee
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bbm Korea Co Ltd
Original Assignee
Bbm Korea Co Ltd
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.)
Filing date
Publication date
Application filed by Bbm Korea Co Ltd filed Critical Bbm Korea Co Ltd
Priority to JP2006532067A priority Critical patent/JP2007507629A/en
Priority to CA002540492A priority patent/CA2540492A1/en
Priority to US10/574,355 priority patent/US20070180790A1/en
Priority to EP04774005A priority patent/EP1682732A1/en
Priority to BRPI0414937-8A priority patent/BRPI0414937A/en
Publication of WO2005031081A1 publication Critical patent/WO2005031081A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00—Structural elongated elements designed for load-supporting
    • E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
    • E04C3/29—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces built-up from parts of different material, i.e. composite structures
    • E04C3/293—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces built-up from parts of different material, i.e. composite structures the materials being steel and concrete
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
    • E04C5/01—Reinforcing elements of metal, e.g. with non-structural coatings
    • E04C5/06—Reinforcing elements of metal, e.g. with non-structural coatings of high bending resistance, i.e. of essentially three-dimensional extent, e.g. lattice girders
    • E04C5/0645—Shear reinforcements, e.g. shearheads for floor slabs

Definitions

  • the present invention relates to a shear connector used between a
  • a shear connector is installed between a steel beam and a concrete
  • FIG. 5 is a view illustrating a beam member capable of supporting a bending moment in such a manner that a H steel beam member 51 and a
  • concrete slave 52 are formed integrally by a stud connector 53.
  • the beam can be
  • an uplift force f up occurs at a contacting surface between the steel
  • Figures 7a through 7c are views illustrating a transformation state and a
  • the resistance at the cross section has an in-facial shear stress
  • a stud connector has been used as a shear connector in
  • a circular head and a body are formed integrally.
  • An arc stud welding machine is needed for a work at a construction site, or a
  • the anchorage effect may be decreased due to a frequent vibration or fatigue weight load.
  • a shear connector comprising a flange and a web having a plurality of
  • a shear connector comprising a flange formed of a plurality of flange
  • a shear connector comprising an upper flange and a web
  • FIGS. 1 a and 1 b are perspective views of a shear connector according
  • Figures 2a and 2b are perspective views of a shear connector according to a second embodiment of the present invention.
  • Figures 3a and 3b are perspective views of a shear connector according
  • Figure 4 is a perspective view of another example of a shear connector
  • Figure 5 is a partly cut-out perspective view of a beam member
  • Figures 6a through 6c are views illustrating a transformation state and a
  • Figures 7a through 7c are views of a transformation state and a bending
  • connectors are installed at an upper side of the steel beam so that a slip
  • Figure 1a is a view of a shear connector 1 according to a first
  • the shear connector 1 As shown therein, the shear connector 1
  • the through holes 12 and 22 are provided in order to increase a
  • shapes of the through holes 12 and 22 are not limited to
  • the through holes 12 and 22 may be formed in a
  • portion 14 is formed in order to prevent a certain fatigue breakdown by a corner
  • reinforced steel may be
  • the reinforced steel is provided to enhance vertical and horizontal shear stresses. Namely, a
  • the flange 10 is provided in order to achieve a desired mounting effect
  • Figures 2a and 2b are views illustrating a shear connector 2 according
  • the plate forming the flange 10 is formed of a
  • cut-out flanges 10 are capable of coping with the
  • the through holes 22 formed at the web 20 can be formed in various ways.
  • a fatigue breakage may occur by the corner
  • Figures 3a and 3b are views illustrating a shear connector 3 according
  • a plurality of through holes are formed at an upper flange and a web.
  • a lower flange 30 is designed to enhance the weldability for thereby
  • protrusions can be formed at the web
  • weight transfer function is provided between different materials.
  • the present invention is not limited to the above embodiments. As the

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Joining Of Building Structures In Genera (AREA)
  • Rod-Shaped Construction Members (AREA)

Abstract

The present invention relates to a shear connector having perforated and/or cut-out plates. In a T-shaped steel plate having a certain length, there are provided a plurality of through holes at a flange and a web. The flanges may be cut-out in biased method, and a plurality of through holes may be formed at the web. In the present invention, it is possible to achieve a perfect combination or a partial combination effect between a steel material and concrete. In addition, it is possible to enhance a weight resistance ability and a resistance ability with respect to transformation in such a manner that weight transfer function is provided between different materials.

Description

SHEAR CONNECTOR USING PERFORATED AND/OR
CUT-OUT PLATE
Technical Field
The present invention relates to a shear connector used between a
steel material and a concrete, and in particular to a shear connector using a
perforated and/or cut-out plate.
Background Art A combined structure used in architecture, or civil engineering field, etc.
is designed with long span and high weight. Therefore, a desired strength is not
achieved with only a pure steel structure, and a steel material needed is
increased. Therefore, a constructed cross section or a material strength gets
increased using a large mass concrete for thereby enhancing a weight
resistance ability.
In particular, when a bending member is implemented using a combined
structure, a shear connector is installed between a steel beam and a concrete
slave for thereby achieving a mechanical adhering force (namely, shearing
resistance) against a horizontal shear force. Figure 5 is a view illustrating a beam member capable of supporting a bending moment in such a manner that a H steel beam member 51 and a
concrete slave 52 are formed integrally by a stud connector 53. The beam can
be classified into a combined beam and a non-combined beam depending on
the presence of a shear connector. In the non-combined beam in which the shear connector is not installed
between the concrete slave and steel material, there are a transformation state
and a bending stress distribution with respect to an operation bending moment
as shown in Figures 6a through 6c. At this time, it is assumed that a friction
force between the concrete slave and the steel material surface is too weak, so
that it can be neglected.
As shown therein, the concrete slave 52 and the steel beam 51 form
neutral axes Zs and Zb, respectively and are bendable. At this time, a slip
phenomenon may occur between the steel beam surface and the concrete. In
addition, an uplift force fup occurs at a contacting surface between the steel
beam surface and the concrete.
Figures 7a through 7c are views illustrating a transformation state and a
bending stress distribution with respect to an operation bending moment in a
combined beam which the enough amount of shear connectors are installed at
an upper side of the beam so that a slip phenomenon does not occur between
the concrete slave and the steel beam. The resistance at the cross section has an in-facial shear stress
(horizontal shear force σ ) and an out-facial shear force (vertical shear force σv,
uplift force). Namely, a shear connector having the above two resistance
functions should be provided in order to obtain a perfect combination between
the concrete and the steel material.
Generally, a stud connector has been used as a shear connector in
order to achieve a combined effect between the steel material and the concrete
in architecture, or civil engineering field, etc., for thereby transferring an in-facial
shear force between different materials. In the stud connector, a circular head and a body are formed integrally.
An arc stud welding machine is needed for a work at a construction site, or a
factory, etc.
However, the arc stud welding needs 220V/380V (three-phase) voltage
and over fixed rate current of 350-1000KA. Therefore, there are many problems
in that it is impossible to obtain a fixed rate voltage or current at a remote area
or a small size factory.
In addition, since the conventional stud connector has a small size head,
a desired combination effect cannot be achieved in material separation
prevention with respect to uplift force and an anchorage effect. Furthermore, the anchorage effect may be decreased due to a frequent vibration or fatigue weight load.
Disclosure of Invention
Accordingly, it is an object of the present invention to provide a shear
connector having a perforated and/or cut-out plate capable of overcoming the
problems encountered in the conventional art.
It is another object of the present invention to provide a shear connector
having a perforated and/or cut-out plate capable of being easily constructed,
achieving a perfect combination and a partial combination effect and enhancing
a weight resistance ability and a resistance ability with respect to
transformations in such a manner that a weight transfer function is provided
between different materials.
It is further another object of the present invention to provide a shear
connector having a perforated and/or cut-out plate capable of achieving the
same resistance performances with respect to an in-facial shear stress and an
out-facial shear stress.
To achieve the above objects, according to an aspect of the present
invention, in a T-shaped steel plate having a predetermined length, there is
provided a shear connector, comprising a flange and a web having a plurality of
holes. To achieve the above objects, according to other aspect of the present
invention, in a T-shaped steel plate having a predetermined length, there is
provided a shear connector, comprising a flange formed of a plurality of flange
pieces cut-out in biased shapes, and a web having a plurality of holes. To achieve the above objects, according to another aspect of the
present invention, in a Z-shaped steel plate having a predetermined length,
there is provided a shear connector, comprising an upper flange and a web
having a plurality of through holes.
Therefore, in the present invention, a combination operation with a steel
material is enhanced, so that a separation is prevented between concrete and a
steel material, and thereby, a resistance with respect to a uplift operation and a
facial shear resistance are enhanced.
Brief Description of Drawings The present invention will become better understood with reference to
the accompanying drawings which are given only by way of illustration and thus
are not limitative of the present invention, wherein;
Figures 1 a and 1 b are perspective views of a shear connector according
to a first embodiment of the present invention; Figures 2a and 2b are perspective views of a shear connector according to a second embodiment of the present invention;
Figures 3a and 3b are perspective views of a shear connector according
to a third embodiment of the present invention;
Figure 4 is a perspective view of another example of a shear connector
according to a first embodiment of the present invention;
Figure 5 is a partly cut-out perspective view of a beam member
combination beam capable of resisting a bending moment in such a manner
that a H-shaped beam member 51 and a concrete slave 52 are integrated using
a stud connector 53; Figures 6a through 6c are views illustrating a transformation state and a
bending stress distribution in a non-combined beam in which a shear connector
is not installed between a concrete slave and a steel beam; and
Figures 7a through 7c are views of a transformation state and a bending
stress distribution with respect to an operation bending moment in a beam
combined with a concrete slave wherein the enough amount of shear
connectors are installed at an upper side of the steel beam so that a slip
phenomenon does not occur between the concrete slave and the steel beam.
Best Mode for Carrying Out the Invention The preferred embodiments of the present invention will be described with reference to the accompanying drawings.
Figure 1a is a view of a shear connector 1 according to a first
embodiment of the present invention. As shown therein, the shear connector 1
according to a first embodiment of the present invention is formed of a T-shaped
steel having a flange 10 and a web 20. A plurality of through holes 12 and 22
are formed at the flange 10 and the web 20 at regular intervals.
Here, the through holes 12 and 22 are provided in order to increase a
combining operation with concrete. As shown in Figure 1 a, there are shown the
shapes of the through holes 12 and 22. However, the shapes are not limited to
the shapes of Figure 1a. The through holes 12 and 22 may be formed in a
rectangular shape, a triangle shape and a diamond shape. In addition, in the
case that a corner is formed at the through hole like a triangle shape, a
rectangular shape and a diamond shape, as shown in Figure 1 b, a rounding
portion 14 is formed in order to prevent a certain fatigue breakdown by a corner
stress concentration.
The through holes 12 and 22 formed in the flange 10 and the web 20
are designed to secure a continuity of the concrete and are capable of
preventing a material separation based on a wedge function with respect to the
horizontal and the vertical shear forces. In addition, reinforced steel may be
inserted into the through holes 12 and 22, respectively. Here, the reinforced steel is provided to enhance vertical and horizontal shear stresses. Namely, a
brittleness property of the concrete is changed into a malleability property.
The flange 10 is provided in order to achieve a desired mounting effect
with respect to an uplift force by limiting a flange lower concrete for thereby
preventing a separation between the contacting surfaces of the materials.
Figures 2a and 2b are views illustrating a shear connector 2 according
to second embodiment of the present invention. A plurality of through holes 22
are formed on the web 20. The plate forming the flange 10 is formed of a
plurality of flange pieces 16 and 18 wherein the flange pieces are cut-out in a
biased shape.
At this time, the construction that the flanges 10 are cut-out based on a
biased method is provided in order to prevent the problems that the concrete is
not effectively filled in the lower side of the flange after the concrete is filled. The
brittleness breakage is prevented during the shearing resistance by slightly
decreasing the strength of the flange. Therefore, the malleability property can
be achieved.
In addition, the cut-out flanges 10 are capable of coping with the
horizontal shear stresses by the wedge functions of the concrete.
The through holes 22 formed at the web 20 can be formed in various
shapes like the first embodiment of the present invention. In the case that a corner portion is formed at the through holes in a triangle shape, a rectangular
shape, and a diamond shape, a fatigue breakage may occur by the corner
stress concentration as shown in Figure 2b. Therefore, a rounding portion 14 is
provided in order to decentralize the stress concentration. Figures 3a and 3b are views illustrating a shear connector 3 according
to third embodiment of the present invention. As shown therein, in a Z-shaped
steel plate, a plurality of through holes are formed at an upper flange and a web.
At this time, a lower flange 30 is designed to enhance the weldability for thereby
achieving a stable adherence with the steel material. In the preferred embodiments of the present invention, a plurality of
protrusions (not shown) and/or grooves (not shown) can be formed at the web
and the flange for thereby enhancing a friction force with the concrete.
As shown in Figure 4, the web 20 of the shear connector 1 , 2 or 3
according to the present invention may be formed to have a plurality of ridges
and valley portions in the shape of a wave. Therefore, it is possible to guide a
small size breakage, not a big size breakage based on a pocket effect of
concrete filled into the valley portions of the web 20.
Industrial Applicability As described above, in the present invention, it is possible to achieve a perfect combination and a partial combination effect between a steel material
and concrete. In addition, a weight resistance ability and a resistance ability with
respect to transformation are significantly enhanced in such a manner that a
weight transfer function is provided between different materials. The present invention is not limited to the above embodiments. As the
present invention may be embodied in several forms without departing from the
spirit or essential characteristics thereof, it should also be understood that the
above-described examples are not limited by any of the details of the foregoing
description, unless otherwise specified, but rather should be construed broadly
within its spirit and scope as defined in the appended claims, and therefore all
changes and modifications that fall within the meets and bounds of the claims,
or equivalences of such meets and bounds are therefore intended to be
embraced by the appended claims.

Claims

Claims:
1. A shear connector having a predetermined length in a T-shaped steel
plate, comprising: a flange and a web having a plurality of through holes.
2. The connector of claim 1 , wherein said web has a plurality of valley
portions and ridges in wave shapes.
3. The connector of claim 1 , wherein a plurality of protrusions and/or
grooves are formed at the flange and the web.
4. The connector of claim 3, wherein said web has a plurality of valley
portions and ridges in wave shapes.
5. A shear connector having a predetermined length in a T-shaped steel
plate, comprising: a flange formed of a plurality of flange pieces wherein said flange
pieces are cut-out in biased shapes; and a web having a plurality of through holes.
6. The connector of claim 5, wherein said web has a plurality of valley
portions and ridges in wave shapes.
7. The connector of claim 5, wherein a plurality of protrusions and/or
grooves are formed at the flange and the web, respectively.
8. The connector of claim 7, wherein said web has a plurality of valley
portions and ridges in wave shapes.
9. A shear connector having a predetermined length in a Z-shaped steel
plate, comprising: an upper flange and a web having a plurality of through holes.
10. The connector of claim 9, wherein said web has a plurality of valley
portions and ridges in wave shapes.
11. The connector of claim 9, wherein a plurality of protrusions and/or
grooves are formed at the flange and the web, respectively.
12. The connector of claim 11 , wherein said web has a plurality of valley portions and ridges in wave shapes.
PCT/KR2004/001529 2003-10-01 2004-06-24 Shear connector using perforated and/or cut out plate Ceased WO2005031081A1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP2006532067A JP2007507629A (en) 2003-10-01 2004-06-24 Shear coupling material using perforated steel plates and / or alternately torn steel plates
CA002540492A CA2540492A1 (en) 2003-10-01 2004-06-24 Shear connector using perforated and/or cut out plate
US10/574,355 US20070180790A1 (en) 2003-10-01 2004-06-24 Shear connector using perforated and/or cut out plate
EP04774005A EP1682732A1 (en) 2003-10-01 2004-06-24 Shear connector using perforated and/or cut out plate
BRPI0414937-8A BRPI0414937A (en) 2003-10-01 2004-06-24 shear connector using perforated and / or cut plate

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2003-0068475 2003-10-01
KR1020030068475A KR100585503B1 (en) 2003-10-01 2003-10-01 Shear connector using perforated and / or staggered steel sheets

Publications (1)

Publication Number Publication Date
WO2005031081A1 true WO2005031081A1 (en) 2005-04-07

Family

ID=36577277

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2004/001529 Ceased WO2005031081A1 (en) 2003-10-01 2004-06-24 Shear connector using perforated and/or cut out plate

Country Status (8)

Country Link
US (1) US20070180790A1 (en)
EP (1) EP1682732A1 (en)
JP (1) JP2007507629A (en)
KR (1) KR100585503B1 (en)
CN (1) CN1863973A (en)
BR (1) BRPI0414937A (en)
CA (1) CA2540492A1 (en)
WO (1) WO2005031081A1 (en)

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Publication number Priority date Publication date Assignee Title
CN103807575A (en) * 2014-03-04 2014-05-21 太仓云联信息科技有限公司 Supporting board

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KR100684396B1 (en) * 2006-04-06 2007-03-12 경기대학교 산학협력단 Shear Shear Connector
KR100786900B1 (en) * 2006-05-25 2007-12-17 비비엠코리아(주) Steel pipe girder
KR100718294B1 (en) * 2006-07-04 2007-08-10 재단법인서울대학교산학협력재단 Steel beam for slim slab using cold forming steel
KR101018824B1 (en) * 2009-01-12 2011-03-04 (주)네오크로스구조엔지니어링 Fabrication method of composite beam using tee steel and structure construction method
KR100971736B1 (en) * 2009-04-03 2010-07-21 이재호 Shear reinforcement with dual anchorage function each up and down
KR101094239B1 (en) 2011-07-22 2011-12-14 삼표건설 주식회사 Upper reinforcement member of girder and girder using same
JP6132132B2 (en) * 2012-12-14 2017-05-24 清水建設株式会社 High performance perforated steel plate gibber
CN103291692B (en) * 2013-06-09 2016-03-23 苏州柏德纳科技有限公司 T-shaped link
JP6590192B2 (en) * 2015-07-31 2019-10-16 清水建設株式会社 Strength evaluation method and design method of high performance perforated steel plate gibber
CN105133794A (en) * 2015-09-22 2015-12-09 武汉理工大学 Open-hole type steel reinforced concrete structure
CN106223188A (en) * 2016-09-27 2016-12-14 广东工业大学 A kind of bridge and shearing resistance combinative structure thereof
CN108104272A (en) * 2017-12-12 2018-06-01 上海市政工程设计研究总院（集团）有限公司 A kind of shear connector used in steel-concrete combined structure
CN108222372B (en) * 2018-02-05 2020-05-29 沈阳建筑大学 Shear connector and manufacturing method thereof, and profile steel concrete column and pouring method thereof
CN108277886B (en) * 2018-02-05 2019-08-27 沈阳建筑大学 A T-shaped CR shear connector for steel concrete columns
CN110761488A (en) * 2018-07-25 2020-02-07 迈瑞司（北京）抗震住宅技术有限公司 Wood-concrete composite beam
KR102092499B1 (en) * 2019-01-15 2020-03-23 주식회사 승일 Aerosol can having overpressure protector and valve assembly thereof
US11408170B2 (en) * 2019-02-06 2022-08-09 Flexible OR Solutions LLC Universal pre-fabricated operating room ceiling system
CN112012399A (en) * 2020-07-31 2020-12-01 中冶(上海)钢结构科技有限公司 Method for arranging stirrup without punching steel skeleton beam web

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Also Published As

Publication number Publication date
JP2007507629A (en) 2007-03-29
KR100585503B1 (en) 2006-06-07
CA2540492A1 (en) 2005-04-07
US20070180790A1 (en) 2007-08-09
KR20050032421A (en) 2005-04-07
CN1863973A (en) 2006-11-15
EP1682732A1 (en) 2006-07-26
BRPI0414937A (en) 2006-11-07

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