KR101654699B1 - Shear connector and girder having the same - Google Patents

Shear connector and girder having the same Download PDF

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Publication number
KR101654699B1
KR101654699B1 KR1020150113612A KR20150113612A KR101654699B1 KR 101654699 B1 KR101654699 B1 KR 101654699B1 KR 1020150113612 A KR1020150113612 A KR 1020150113612A KR 20150113612 A KR20150113612 A KR 20150113612A KR 101654699 B1 KR101654699 B1 KR 101654699B1
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South Korea
Prior art keywords
stud
girder
frame beam
coupled
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KR1020150113612A
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Korean (ko)
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장병조
김은화
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장병조
김은화
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    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01DCONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D2/00Bridges characterised by the cross-section of their bearing spanning structure
    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01DCONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D2/00Bridges characterised by the cross-section of their bearing spanning structure
    • E01D2/02Bridges characterised by the cross-section of their bearing spanning structure of the I-girder type
    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01DCONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D21/00Methods or apparatus specially adapted for erecting or assembling bridges

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

Abstract

A shear connector is disclosed. A shear connector according to an embodiment of the present invention includes: a frame beam, at least a portion of which is embedded in a girder; And a vertical member coupled to the frame beam.

Description

[0001] SHEAR CONNECTOR AND GIRDER HAVING THE SAME [0002] BACKGROUND OF THE INVENTION [0003]

More particularly, the present invention relates to a shear connection material which can be easily installed with a simple structure and can fully exhibit the effect of the synthesis between a girder and a bottom plate concrete placed on the upper part of a girder.

In the construction of bridges, it is necessary to improve the shear strength and ductility by inducing the unified behavior of the load transfer by solidifying the shear connect between the girder and the bottom plate concrete placed on the girder top will be.

Conventionally, as shown in detail in FIG. 1, a girder 3U is manufactured such that a structure 6 using reinforcing bars is embedded in the girder 3U so that the shear connection portion 7 protrudes to the upper portion of the girder 3U The bottom plate concrete 2 is placed on the upper portion of the girder 3U so that the shear connection portion 7 is disposed inside the bottom plate concrete 2 so that the girder 3U and the bottom plate concrete 2 are firmly fixed Lt; / RTI >

However, in the conventional shear connector using the reinforcing bars, since the structure 6 using the reinforcing bars including the shear connection portion 7 has a complicated structure at the stage of manufacturing the girder, the fabrication of the girder is complicated, There is a problem.

In addition, even if it is attempted to reduce the interval of the shear connection part 7 in order to increase the shear connection effect of the shear connection part 7, the operation is complicated and a lot of time and cost are consumed and the weight of the girder increases. The composite effect of the girder 3U and the bottom plate concrete 2 is not sufficiently exhibited.

Korean Public Utility Model No. 20-2009-0001754 (2009.02.25.)

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and it is an object of the present invention to provide a shear connection member which can be easily installed with a simple structure and can sufficiently exhibit the effect of the synthesis between the girder and the bottom plate concrete placed on the upper portion of the girder, And a girder having the same.

According to an aspect of the present invention, there is provided a frame structure, comprising: a frame beam in which at least a portion is embedded in a girder; And a vertical member coupled to the frame beam.

The frame beam may be one of an 'I' type and a 'U' type beam.

The frame beam may have a cut-out portion cut along a longitudinal direction at a predetermined portion of the upper end portion or the lower end portion.

The frame beam may be an 'I' shaped beam, and the vertical member may be a stud unit coupled to either the upper surface or the lower surface of the frame beam.

The stud unit comprising: an upper stud rod coupled to an upper surface of the frame beam; And an upper stud magnifying head coupled to an upper end of the upper stud bar.

The stud unit may further include a plurality of upper stud wings spaced from each other in the radial direction of the upper stud bar and coupled to the upper stud bar.

The stud unit includes: a lower stud rod coupled to a lower surface of the frame beam; A lower stud enlarged head coupled to a lower end of the lower stud rod; And a plurality of lower stud wings spaced apart from each other in the radial direction of the lower stud rod and coupled to the lower stud rod.

The frame beam being entirely embedded in the girder, the stud unit comprising: a first upper stud rod coupled to an upper surface of the frame beam and disposed within the girder; A second upper stud rod coupled to the first upper stud rod; And a second upper stud extension head coupled to an upper end of the second upper stud bar.

The first upper stud bar and the second stud bar may be bolted together.

The stud unit may further include a plurality of stud wings coupled to at least one of the first upper stud rod and the second upper stud rod so as to be spaced apart from each other in the radial direction.

The frame beam may be a U-shaped beam, and the vertical member may be a stud unit coupled to the lower surface of the frame beam and embedded in the girder.

The stud unit includes: a lower stud rod coupled to a lower surface of the frame beam; And a lower stud enlarged head coupled to a lower end of the stud rod.

The stud unit may further include a plurality of lower stud wings spaced from each other in the radial direction to the lower stud rod and coupled to the lower stud rod.

And an enlarged head coupled to an upper surface of the frame beam.

According to another aspect of the present invention, there is provided a girder frame comprising: a girder frame; And a girder including the shear connector according to any one of claims 1 to 14 installed on the girder frame.

The embodiments of the present invention can sufficiently exhibit the effect of the synthesis between the girder and the bottom plate concrete placed on the upper part of the girder, thereby further strengthening the shear connection between the girder and the bottom plate concrete, thereby inducing the load transfer and the integrated behavior Not only the shear strength and ductility can be improved, but also the effect of reinforcing the rigidity of the girder can be obtained.

FIG. 1 is a cross-sectional view showing a state where a girder including a shear connector using a conventional reinforcing bar and a bottom plate concrete are combined.
2 is a perspective view showing a shear connector according to a first embodiment of the present invention.
FIG. 3 is a cross-sectional view showing a state where a girder including the shear connection member of FIG. 2 and a bottom plate concrete are combined.
4 is a perspective view illustrating a shear connector according to a second embodiment of the present invention.
FIG. 5 is a cross-sectional view showing a state where a girder including a shear connection member of FIG. 4 and a bottom plate concrete are coupled.
6 is a perspective view illustrating a shear connector according to a third embodiment of the present invention.
FIG. 7 is a cross-sectional view illustrating a state in which a girder including a shear connection member of FIG. 6 and a bottom plate concrete are combined.
8 is a perspective view illustrating a shear connector according to a fourth embodiment of the present invention.

In order to fully understand the present invention, operational advantages of the present invention, and objects achieved by the practice of the present invention, reference should be made to the accompanying drawings and the accompanying drawings which illustrate preferred embodiments of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Like reference symbols in the drawings denote like elements.

FIG. 2 is a perspective view showing a shear connection member according to a first embodiment of the present invention, and FIG. 3 is a cross-sectional view illustrating a state where a girder including the shear connection member of FIG.

As shown in these drawings, the shear connection member 1a according to the first embodiment of the present invention is constructed such that at least a portion thereof is embedded in the girder 3I, and between the girder 3I and the bottom plate concrete 2 placed on the upper portion of the girder The frame beam 10I and the stud unit 30, which is a vertical member, are provided to the upper and lower ends of the frame member 10A, respectively, so as to improve the shear strength and ductility. .

First, the frame beam 10I constitutes the body of the front end coupling member 1a to which a stud unit 30 to be described later is coupled. In this embodiment, a beam having an I-shaped cross section is used.

According to the present invention, by using a beam as the body of the shear connector (1a), an effect of connecting the shear ends between the girder (3I) and the bottom plate concrete (2) can be obtained and the effect of reinforcing the rigidity of the girder Can be obtained.

That is, a part of the frame beam 10I is embedded at the upper end of the girder 3I to reinforce the rigidity of the girder 3I. For example, in order to withstand the tensile stress generated at the upper end of the girder when the prestress is introduced, It is possible to reinforce the stiffness of the third layer 3I.

In this embodiment, a frame beam 10I having an I-shaped cross section is used, and the frame beam 10I is provided with an upper flange 11 at the upper end, a lower flange 12 and an upper flange 11 at the lower end, And a web 13 connecting the lower flange 12.

At this time, the frame beam 10I may be formed with a cutout portion 14 cut along a longitudinal direction at a predetermined portion of the upper flange 11 and the lower flange 12, The weight can be reduced and the frame beam 10I and the girder 3I or the frame beam 10I and the bottom plate concrete 2 can be more firmly synthesized.

As a result, in this embodiment, the cutouts 14 are repeatedly formed at regular intervals in the upper flange 11 and the lower flange 12 of the frame beam 10I, and the frame beam 10I is formed between the girder 3I and the bottom The frame beam 10I and the bottom plate concrete 2 can be more firmly composited by the cutouts 14 formed in the upper flange 11 by being embedded at the same depth in the plate concrete 2, The frame beam 10I and the girder 3I can be more firmly combined by the cutout portion 14 formed in the frame 12.

Further, the portion embedded in the girder 3I reinforces the rigidity, which is a weak point of the concrete portion constituting the girder 3I.

In this embodiment, as described above, the frame beam 10I uses two beams having an I-shaped cross section, but the scope of the present invention is not limited thereto, 8) or a T-shaped beam may be used. Further, depending on the change of the size, shape and weight of the girder, the thickness of the frame beam, the length, the presence or absence of the cut portion, It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

The stud unit 30 is coupled to the frame beam 10I and the front end connection unit 30 coupled to the upper flange 11 is combined with the bottom plate concrete 2 placed on the upper part of the girder 3I, The shear connection between the plate concrete 2 and the frame beam 10I is further strengthened and the front end connection unit 30 coupled to the lower flange 12 is combined with the girder 3I to form the girder 3I And shear connect between frame beam 10I and frame beam 10I.

The shear connection member 1a has a structure in which the stud unit 30 is coupled to the frame beam 10I so that the shear connection between the girder 3I and the bottom plate concrete 2 is finally strengthened, So that the shear strength and ductility can be improved and the rigidity of the girder 3I can be reinforced.

The stud unit 30 includes an upper stud bar 31, an upper stud widening head 32, an upper stud wing 33, a lower stud rod 37, a lower stud widening head 38, And a stud blade 39.

The upper stud wand 33 is coupled to the upper flange 11 of the frame beam 10I and the upper stud widening head 32 is coupled to the upper end of the upper stud bar 31, Are spaced from each other in the radial direction to the stud rods (31) and are coupled to the upper stud rods (31).

The lower stud wing 39 is coupled to the lower flange 12 of the frame beam 10I and the lower stud widening head 38 is coupled to the lower end of the lower stud bar 37, Are spaced from each other in the radial direction to the stud rods (37) and are coupled to the lower stud rods (37).

By providing the upper stud wing 33 and the lower stud wing 39, the resistance of the cross section can be increased and resistance rigidity of the horizontal force can be increased as compared with the conventional stud connector, and the upper and lower stud wings 33, The resistance rigidity of a horizontal force in a specific direction transmitted from the throttle direction C or other desired direction can be increased.

Further, the stud unit 30 having such a wing structure has the same resistance as the conventional stud connector and has a large resisting rigidity of the horizontal force, so that the same effect can be obtained while reducing the number of the stud units 30, And reduce costs.

The upper stud wing 33 in this embodiment is formed such that two upper stud wings 33 protrude in opposite directions from each other in the upper stud rod 31 so as to intersect with the throttling direction C, By having such a structure, it is possible to effectively resist the force transmitted in the throttling direction C.

However, the present invention is not limited to this, and if the shear connection is required to be more rigid, the upper stud wing 33 can be coupled more, and if the force applied in a particular direction is greater, Or a plurality of upper stud blades 33 may be coupled to form a predetermined angle.

The description of the upper stud wing 33 is also applied to the lower stud wing 39 as well.

When the stud unit 30 is coupled to the frame beam 10I, the adjacent stud units 30 are spaced apart and joined together with a constant spacing. If the shear connection needs to be more robust, have.

As described above, according to the present embodiment, by providing the frame beam 10I, which is partially embedded at the upper end of the girder 3I, and the stud unit 30 coupled to the frame beam 10I, 10I and the shear connection between the girder 3I and the bottom plate concrete 2 is further strengthened so that the shear connection between the girder 3I and the bottom plate concrete 2 is further strengthened, So that the shear strength and ductility can be improved and the rigidity of the girder 3I can be reinforced.

FIG. 4 is a perspective view illustrating a shear connection member according to a second embodiment of the present invention, and FIG. 5 is a cross-sectional view illustrating a state where a girder including the shear connection member of FIG.

Hereinafter, the shear connector 1b according to the second embodiment of the present invention will be described with reference to Figs. 4 and 5. Fig.

The shear connector 1b according to the second embodiment of the present invention is different from the first embodiment in that the difference in depth between the depth of the frame beam 10I in the girder 3U and the shape of the stud unit 40 So we will focus on this part.

First, the entire frame beam 10I is embedded in the girder 3U. When the frame beam 10I is completely embedded, the effect of reinforcing the rigidity of the girder 3U compared to the first embodiment There is an advantage that it is further increased.

Next, the stud unit 40 includes a first upper stud rod 41, a second upper stud rod 43, a second upper stud extension head 44, a first upper stud wing 45, A second stud stud wing 46, a lower stud rod 47, a lower stud extension head 48 and a lower stud wing 49.

The first upper stud bar 41 is coupled to the upper flange 11 of the frame beam 10I and is disposed inside the girder 3U and the second upper stud bar 43 is fixed to the first upper stud bar 41 And the second upper stud widening head 44 is coupled to the upper end of the second upper stud rod 43 and the first upper stud wing 45 and the second upper stud wing 46 are coupled to the first upper stud stud 43, And are bonded to the rods 41 and the second upper stud rods 43 in a radial direction.

The first upper stud bar 41 serves to strengthen the shear connection between the frame beam 10I and the girder 3U while the second upper stud bar 43 serves to strengthen the shear connection between the girder 3U and the bottom plate concrete 2).

By having the double-coupled structure in which the first upper stud bar 41 and the second upper stud bar 43 are coupled to each other, the frame beam 10I and the stud unit 30 (see FIG. 2) described in the above- And the depth of the embedding depth of the frame beam 10I is determined, it is possible to obtain a design determined only by joining the second upper stud bar 43 of various lengths Can be easily handled.

Although the connecting portions 42 of the first upper stud rod 41 and the second upper stud rod 43 are bolted to each other in the present embodiment, the present invention is not limited thereto. For example, welding or other fasteners may be used And may be modified into an appropriate form if necessary.

In this embodiment, the first upper stud wing 45 and the second upper stud wing 46 are provided with four wings so that the angle toward the direction perpendicular to the throttling axis is smaller than the angle toward the throttling direction C.

That is, by having a structure in which the wings are concentrated toward the direction perpendicular to the throttling axis, it is possible to more effectively resist the force transmitted in the throttling direction C as compared with the first embodiment.

Since the lower stud stud 47 and the lower stud extension head 48 are the same as those described in the first embodiment described above, the description is omitted here, and the lower stud stud 49 is provided with the first upper stud wing 49, The description of the first upper stud blade 45 and the second upper stud blade 46 is applied equally.

FIG. 6 is a perspective view showing a shear connection member according to a third embodiment of the present invention, and FIG. 7 is a sectional view showing a state where a girder including the shear connection member of FIG. 6 and a bottom plate concrete are coupled.

Hereinafter, the shear connector 1c according to the third embodiment of the present invention will be described with reference to Figs. 6 and 7. Fig.

Since the shear connector 1c according to the third embodiment of the present invention differs from the first embodiment in that the shape of the frame beam 10U differs from that of the stud unit 50, Explain.

First, the frame beam 10U of the present embodiment uses a beam having a U-shaped cross-section, and includes a horizontal portion 16 and a vertical portion 17, unlike the above-described embodiments.

At this time, the frame beam 10U has a cutout portion 14 formed in the vertical portion 17 along a longitudinal direction. The cutout portion 14 can reduce the weight of the cutout portion 14, The frame beam 10U and the bottom plate concrete 2 can be more firmly assembled between the frame 10U and the girder 3U and between the frame beam 10U and the bottom plate concrete 2. [

The stud unit 50 includes a lower stud rod 57 coupled to the lower surface of the horizontal portion 16 of the frame beam 10U, a lower stud enlarged head 58 and a lower stud wing 59 And an enlarged head 18 is formed at the upper end of the vertical portion 17 of the frame beam 10U to make the shear connection strong.

In this embodiment, the lower stud wing 59 is provided with four blades, and is arranged to form an angle of 90 degrees with respect to each other, so that the lower stud wing 59 can evenly resist forces transmitted in the direction of the throttling axis C and the direction perpendicular to the throttling axis.

8 is a perspective view illustrating a shear connector according to a fourth embodiment of the present invention.

Hereinafter, the shear connector 1d according to the fourth embodiment of the present invention will be described with reference to FIG.

The fourth embodiment of the present invention differs from the third embodiment in that no cut-out portion 14 is formed, and instead of the enlarged head 18 formed long along the longitudinal direction, And is provided with a circular enlarged head 19 which is spaced apart from the other.

As described above, according to the present invention, the girders 3I and 3U can be applied to various girders having 'I' and 'U' as well as 'T' shaped cross sections, and the frame beams 10U and 10I May be changed according to the degree of rigidity to be reinforced, and further, all of the above-mentioned possible cases may be combined.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the invention. It is clear to those who have knowledge. Accordingly, such modifications or variations are intended to fall within the scope of the appended claims.

1a, 1b, 1c, 1d: shear connection member 2: bottom plate concrete
3I, 3U: girder 10U, 10I: frame beam
30, 40, 50, 60: stud unit 31: upper stud rod
32: Upper stud extension head 33: Upper stud wing
37: lower stud rod 38: lower stud enlarged head
39: lower stud wing 41: first upper stud rod
42: connecting portion 43: second upper stud rod
44: second upper stud extension head 45: first upper stud wing
46: second upper stud wing 47: lower stud rod
48: Zoom in the lower stud 49: Zoom in the lower stud

Claims (15)

A frame beam in which at least a portion is embedded in the girder;
A vertical member coupled to the frame beam,
The frame beam is a " U "
Wherein the frame beam is integrally formed with a cut-out portion formed by cutting a predetermined section of the frame beam along a longitudinal direction, and an enlarged head extending horizontally from an upper end of the frame beam,
Wherein the vertical member is a stud unit coupled to a lower surface of the frame beam and embedded in the girder,
The stud unit includes:
A lower stud rod coupled to a lower surface of the frame beam;
A lower stud enlarged head coupled to a lower end of the stud rod; And
And a plurality of lower stud wings spaced apart from each other in the radial direction and coupled to the lower stud bar.
delete delete delete delete delete delete delete delete delete delete delete delete delete Girder frame; And
A girder comprising the shear connector according to claim 1, which is installed in the girder frame.
KR1020150113612A 2015-08-12 2015-08-12 Shear connector and girder having the same KR101654699B1 (en)

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Application Number Priority Date Filing Date Title
KR1020150113612A KR101654699B1 (en) 2015-08-12 2015-08-12 Shear connector and girder having the same

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101780370B1 (en) * 2017-03-17 2017-10-10 홍석희 Composite structure using shear connector made of anchor and socket shoe
CN108660922A (en) * 2018-06-30 2018-10-16 西南交通大学 Steel-concrete connection structure and its shear connector

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20070113691A (en) * 2006-05-25 2007-11-29 비비엠코리아(주) Steel pipe girder
KR20090001754U (en) 2007-08-21 2009-02-25 비비엠코리아(주) Shear connector with recess
KR101094239B1 (en) * 2011-07-22 2011-12-14 삼표건설 주식회사 Reinforcement member and girder using the same
KR101194482B1 (en) * 2012-05-08 2012-10-24 (주)홍지디씨에스 The steel systhesis beam and the method threreof
KR101505039B1 (en) * 2014-11-03 2015-03-24 주식회사 오케이건설 Composite Girder with Heating-Reinforcing Steel Beam and Concrete Beam

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20070113691A (en) * 2006-05-25 2007-11-29 비비엠코리아(주) Steel pipe girder
KR20090001754U (en) 2007-08-21 2009-02-25 비비엠코리아(주) Shear connector with recess
KR101094239B1 (en) * 2011-07-22 2011-12-14 삼표건설 주식회사 Reinforcement member and girder using the same
KR101194482B1 (en) * 2012-05-08 2012-10-24 (주)홍지디씨에스 The steel systhesis beam and the method threreof
KR101505039B1 (en) * 2014-11-03 2015-03-24 주식회사 오케이건설 Composite Girder with Heating-Reinforcing Steel Beam and Concrete Beam

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101780370B1 (en) * 2017-03-17 2017-10-10 홍석희 Composite structure using shear connector made of anchor and socket shoe
CN108660922A (en) * 2018-06-30 2018-10-16 西南交通大学 Steel-concrete connection structure and its shear connector
CN108660922B (en) * 2018-06-30 2023-08-11 西南交通大学 Steel-concrete connecting structure and shear connector thereof

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