KR101675040B1 - U-girder with reinforcing member, bridge using the same and the construction method thereof. - Google Patents

U-girder with reinforcing member, bridge using the same and the construction method thereof. Download PDF

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Publication number
KR101675040B1
KR101675040B1 KR1020150124712A KR20150124712A KR101675040B1 KR 101675040 B1 KR101675040 B1 KR 101675040B1 KR 1020150124712 A KR1020150124712 A KR 1020150124712A KR 20150124712 A KR20150124712 A KR 20150124712A KR 101675040 B1 KR101675040 B1 KR 101675040B1
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KR
South Korea
Prior art keywords
girder
stiffener
upper flange
coupled
coupling
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KR1020150124712A
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Korean (ko)
Inventor
엄영호
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주식회사 아라엔텍
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Priority to KR1020150124712A priority Critical patent/KR101675040B1/en
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Publication of KR101675040B1 publication Critical patent/KR101675040B1/en

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    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D2/00—Bridges characterised by the cross-section of their bearing spanning structure
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D1/00—Bridges in general
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D2101/00—Material constitution of bridges
    • E01D2101/20—Concrete, stone or stone-like material
    • E01D2101/24—Concrete
    • E01D2101/26—Concrete reinforced
    • E01D2101/268—Composite concrete-metal

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Bridges Or Land Bridges (AREA)

Abstract

The present invention includes a lower flange (110); A pair of abdomen (120) coupled to the bottom flange (110); An upper flange 130 protruding outwardly from the upper portion of the pair of abdomen 120; A stiffener 200 having a rod structure and having both ends embedded in the upper flange 130 and passing through openings formed between the upper flanges 130; And a connecting member (300) coupled to both ends of the reinforcing member and exposed to an outer surface of the upper flange (130).
The use of the opening-type girder with the reinforcing member of the present invention can solve the problem that the upper part of the girder spreads outward with respect to the load generated when the bottom plate concrete is installed and the auxiliary facility is installed after the girder is mounted alternately or at a pier.
Further, a plurality of reinforcing members coupled to the upper portion of the girder so as to be spaced apart from each other along the longitudinal direction of the girder improve and improve the safety of the girder for twisting and buckling.

Description

METHOD AND METHOD OF MANUFACTURING METHODS FOR URGENT REINFORCING MEMBER, BRIDGE USING THE SAME AND THE CONSTRUCTION METHOD THEREOF.

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a civil engineering field, and more particularly, to a bridge structure and a construction method thereof.

The opening re-girder girder is used for long bridge structure because its weight is lighter than box girder.

However, unlike the box girder, the opening re-girder is not a closed end. Therefore, when the load due to the installation of the bottom plate concrete and the installation of the auxiliary facility after the installation of the girder is applied, the upper part of the girder spreads outward.

In addition, it has been pointed out that the rigidity against torsion and buckling is reduced during transportation and installation.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide a reinforced concrete structure, which is capable of solving the problem that the upper part of the girder spreads outward due to the load generated during the installation of the bottom plate concrete, An opening-type girder, a bridge using the same, and a method of constructing the same.

It is another object of the present invention to provide an opening-type girder to which a reinforcing material capable of securing safety against twisting and buckling at the time of carrying and installing the girder, a bridge using the same, and a construction method thereof.

In order to solve the above-mentioned problems, the present invention provides a lower flange 110; A pair of abdomen (120) coupled to said bottom flange (110); An upper flange 130 protruding from the upper side of the pair of abdomen portions 120; A stiffener 200 having a bar structure with both ends of the stiffener 130 embedded in the upper flange 130 across an opening formed in the interval between the upper flanges 130; And a connecting member (300) coupled to both ends of the reinforcing member and exposed to an outer surface of the upper flange (130).

The stiffener 200 includes a left stiffener 210 having one end buried in the left upper flange 131 and an opposite end protruding from an opening of the girder. A right side stiffener 220 having one end protruding into the opening of the girder and the other end embedded in the right upper flange 132; And a coupling member 240 coupling the other end of the left stiffener 210 and one end of the right stiffener 220 to each other.

It is preferable that the fixing plate 230 is coupled to the buried portion of the left stiffener 210 buried in the left upper flange 131 and the buried portion of the right stiffener 220 embedded in the right upper flange 132 .

A male screw portion B is formed on the end portion of the protruding end of the left stiffener 210 and the right stiffener 220 in the direction opposite to the direction of the male screw portion B, It is preferable that the female threaded portions 241 are respectively formed to be screwed.

It is preferable that a tension force is introduced into the left stiffener 210 and the right stiffener 220 by the rotation of the coupling member 240.

The connecting member 300 may be coupled to the end portions of the left side stiffener 210 and the right side stiffener 220 respectively coupled to the upper flange 130.

The connecting member 300 includes a fixing part 310 embedded in both ends of the upper flange 130; And a connection part 320 coupled to the fixing part 310 so as to protrude outside the upper flange 130.

The fixing portion 310 is coupled to the upper flange 130 so that the coupling surface 311 coupled to the coupling portion 320 is exposed to the outside of the upper flange, And is protruded upward from the upper flange 130.

The fixing part 310 may be formed with a fixing hole 330 for improving a coupling force with the upper slab.

A bridge using an opening re-forming girder according to the present invention is characterized in that a plurality of the opening-type girders 100 are provided adjacent to each other and at the same time, the connecting portion 320 of one side of the girder 100 and the connecting portion 320 of the other side of the girder 100a (320a) are in contact with each other.

It is preferable that the connecting portion 320 of one side of the girder 100 is welded to the contacting portion A of the connecting portion 320a of the other side of the girder 100a.

The method for constructing a bridge using an opening type girder according to the present invention comprises the steps of: preparing a girder (100) having the reinforcing member (200) and the connecting member (300); A girder mounting step of mounting the girder 100; A contact portion coupling step of coupling the contact portion (A) formed by a plurality of the girders (100) provided adjacent to each other; A tensional force introduction step of rotating the coupling member 240 of the connection member 300 to introduce a tensional force to the stiffener 200; And a bottom plate forming step of placing a reinforcing bar on the upper portion of the girder 100 and casting the bottom plate concrete.

The opening-type girder to which the reinforcing member of the present invention is coupled does not extend to the outside of the upper portion of the girder due to the load generated when the bottom plate concrete is poured and the auxiliary facility is installed after the girder is mounted alternately or at a pier.

Further, a plurality of reinforcing members coupled to the upper flange so as to be spaced apart from each other along the longitudinal direction of the girder improve the safety of the girder against twisting and buckling.

Since the reinforcement member of the present invention is installed at the time of fabricating the girders, it is easy to construct the girders.

Since the plurality of girders are coupled to each other after the girder is installed, the girder turn preventing device of the present invention does not need to be provided separately.

1 is a sectional view of an opening-type girder.
Fig. 2 is a view showing a girder deformation in which an upper flange is opened outside the girder by a load action.
3 is a cross-sectional view of a girder according to an embodiment of the present invention;
FIG. 4 is a girder perspective view of a girder according to an embodiment of the present invention. FIG.
5 is a cross-sectional view of a girder provided with a stiffener according to an embodiment of the present invention.
6 is a cross-sectional view of a stiffener according to an embodiment of the present invention.
7 is a cross-sectional view of a girder in which a stiffener, a coupling member, and a fixing plate are combined according to an embodiment of the present invention.
8 is a girder perspective view of a stiffener, a coupling member, and a fixing plate combined with each other according to an embodiment of the present invention.
9 is a perspective view of a connection member according to an embodiment of the present invention;
10 is a cross-sectional view of a girder coupled by a connecting member in accordance with an embodiment of the present invention.
11 is a girder perspective view coupled by a connecting member in accordance with an embodiment of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is an exploded perspective view of a girder according to a first embodiment of the present invention; Fig. The same reference numerals are assigned to the same elements and a duplicate description thereof will be omitted.

It is also to be understood that the terms first, second, etc. used hereinafter are merely reference numerals for distinguishing between identical or corresponding components, and the same or corresponding components are defined by terms such as first, second, no.

In addition, the term " coupled " is used not only in the case of direct physical contact between the respective constituent elements in the contact relation between the constituent elements, but also means that other constituent elements are interposed between the constituent elements, Use them as a concept to cover each contact.

The longitudinal direction is defined with reference to the direction shown in Fig.

BRIEF DESCRIPTION OF THE DRAWINGS The above and other features and advantages of the present invention will become more apparent by describing in detail exemplary embodiments thereof with reference to the attached drawings in which: FIG.

The present invention includes a lower flange (110); A pair of abdomen (120) coupled to the bottom flange (110); An upper flange 130 protruding outwardly from the upper portion of the pair of abdomen 120; A stiffener 200 having a rod structure and having both ends embedded in the upper flange 130 and passing through openings formed between the upper flanges 130; And a connecting member (300) coupled to both ends of the reinforcing member and exposed to an outer surface of the upper flange (130).

In this case, since the reinforcing member of the rod structure is embedded in the upper flange protruding outwardly, the girder does not extend outward after the installation of the bottom plate concrete load and the installation load of the auxiliary facility.

Further, in a bridge in which a plurality of girders are installed, since a plurality of girders provided adjacent to each other are coupled to each other so as to be exposed to the upper flange end, a separate girder turn preventing device is not required after the girder is installed, .

The stiffener 200 includes a left stiffener 210 having one end buried in the left upper flange 131 and an opposite end protruding from an opening of the girder; A right side stiffener 220 having one end protruded into an opening of the girder and the other end embedded in the right upper flange 132; And a coupling member 240 coupling the other end of the left stiffener 210 and one end of the right stiffener 220 to each other.

In this case, since the stiffener is installed after connecting the right side stiffener and the left side stiffener to the joining member in advance, it is easy to install the stiffener.

Also, since the stiffener is installed so as to be coupled to the upper flange reinforcing bar when the upper flange is reinforced when the girder is manufactured, the coupling strength is excellent.

It is preferable that the fixing plate 230 is coupled to the embedded portion of the left stiffener 210 embedded in the left upper flange 131 and the embedded portion of the right stiffener 220 embedded in the right upper flange 132.

In this case, since the fixing plate is coupled to the embedded portions of the left side stiffener and the right side stiffener embedded in the left and right upper flanges, the pulling resistance of the stiffener is improved.

The male screw portion B is formed by a screw thread in the opposite direction to the end portions of the projections of the left side stiffener 210 and the right side stiffener 220 and is screwed to both ends of the screw member 240 in correspondence with the male screw portion B, It is preferable that each of the portions 241 is formed.

In this case, since the left side stiffener, the right side stiffener, and the engagement member are screwed together, the engagement is easy.

In addition, since the torsion force can be simultaneously introduced to the left side stiffener and the right side stiffener by rotating the coupling member, the restraining force can be introduced in the lateral direction of the end surface of the girder, and the introduction amount of the restraining force can be adjusted.

Since the female screw portion corresponding to the male screw portions of the left side stiffener and the right side stiffener is formed at the end portion of the engaging member, the engaging and disassembling can be realized by forward rotation or reverse rotation of the engaging member.

It is preferable that a tension force is introduced into the left stiffener 210 and the right stiffener 220 by the rotation of the coupling member 240.

In this case, since the tension can be introduced to the left side stiffener and the right side stiffener only by the rotation of the engaging member, the introduction of the tension force is easy.

It is preferable that the connecting member 300 is coupled to the end portions of the left side stiffener 210 and the right side stiffener 220 respectively coupled to the upper flange 130.

In this case, since the connecting member engaging the end portion of the upper flange is engaged with the left reinforcing member and the right reinforcing member end, the coupling force between the connecting member and the upper flange is excellent.

Also, since the restraining force of the left side stiffener and the right side stiffener is increased by the connecting member, a stable structure can be obtained when the torsional force is applied to the left side stiffener and the right side stiffener.

The connecting member 300 includes a fixing part 310 embedded in both ends of the upper flange 130; And a connection part 320 coupled to the fixing part 310 so as to protrude outward from the upper flange 130.

The connecting member is a member for integrating a plurality of girders when a plurality of girders are installed in the width direction of the bridge.

In this case, since the connecting portion is coupled so as to protrude to the outside of the upper slab, it is easy to join the connecting portion.

The fixing portion 310 is coupled to the upper flange 130 such that the coupling surface 311 coupled to the coupling portion 320 is exposed to the outside of the upper flange and the coupling portion 320 is coupled to the coupling surface 311, 130).

In this case, since the connecting portion is protruded to the outer side of the upper slab and is coupled to protrude upward of the upper slab, it can be joined on the upper surface of the girder after the girder is installed.

After installation of the girder, separate work facilities for the work should be installed on the bottom and side of the girder.

However, since the joint portion of the present invention is protruded upward from the upper slab, the operator can safely perform the joining operation at the upper portion of the girder.

It is preferable that the fixing part 310 is provided with a fixing hole 330 for improving the coupling force with the upper slab.

In this case, since the fixing portion is formed in the fixing portion, the coupling force of the coupling member coupled to the upper slab is improved.

A bridge using an opening re-forming girder according to the present invention is characterized in that a plurality of the opening-type girders 100 are provided adjacent to each other and at the same time, the connecting portion 320 of one side of the girder 100 and the connecting portion 320 of the other side of the girder 100a (320a) are in contact with each other.

In this case, since the plurality of girders are mounted so that the connecting portions are in contact with each other, the girder and the girder can be combined only by connecting the connecting portions without a separate coupling device.

It is preferable that the connecting portion 320 of the one side girder 100 and the contacting portion A of the connecting portion 320a of the other side girder 100a are welded together.

In this case, since the plurality of opening-type girders are restrained in the transverse direction by the welding of the connecting portions, there is no need for a separate girder preventing device after the girders are installed.

In addition, a plurality of girders are coupled to each other to form a stable structure at the time of rebar assembly for slab installation of a bottom plate slab and concrete slab installation process for a bottom slab.

The construction of the bridge using the openable type girder of the present invention includes a girder manufacturing step of manufacturing a girder 100 provided with a stiffener 200 and a connecting member 300; A girder mounting step for mounting the girder 100; A contact portion coupling step of coupling a contact portion (A) formed by a plurality of girders (100) provided adjacent to each other; A tensional force introducing step of rotating the joining member 240 of the connecting member 300 to introduce a tensional force to the stiffener 200; And a bottom plate forming step of placing reinforcing bars on the upper portion of the girder 100 and casting the bottom plate concrete.

In this case, since the reinforcing material is embedded in the upper flange of the girder in the girder manufacturing step, there is no process for joining the reinforcing material in the field.

In addition, since the rigidity of the girder is increased by the stiffener coupling, it is possible to prevent the girder from being damaged during transportation and mounting.

After the step of mounting the girder, the opening-type girder is not opened outward due to the load of the bottom plate forming step because the joining member is rotated to introduce a tension force to the stiffener.

If tension is applied to the stiffener prior to the contact of the girders, the length of the girder width may be reduced, resulting in a gap in the joining of the contacts.

Therefore, it is effective to introduce the tensional force into the girder by performing the tensional force introduction step prior to the bottom plate forming step after the contact portion coupling step.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention as defined in the appended claims. It is to be understood that both the technical idea and the technical spirit of the invention are included in the scope of the present invention.

A: Narrowing portion B: Male thread portion
10: existing opening-type girder 100: opening-type girder
110: lower flange 120: abdomen
130: upper flange 131: upper left flange
132: right upper flange 200: stiffener
210: left side stiffener 220: right side stiffener
230: fixing plate 240: engaging member
241: Female thread portion 242:
300: connecting member 310:
320: connection portion 330: fixed portion hole

Claims (12)

A lower flange 110;
A pair of abdomen (120) coupled to said bottom flange (110);
And an upper flange (130) protruding outward from the upper portion of the pair of belly portions (120), the bridging structure comprising:
Both ends of the upper flange 130 are interposed between the upper flange 130 and the upper flange 130,
One end is embedded in the upper left flange 131 and the other end is a left stiffener 210 protruding from the opening of the girder 100;
A right side stiffener 220 having one end protruding into the opening of the girder 100 and the other end embedded in the right upper flange 132;
A fixing plate 230 coupled to the embedded portion of the left stiffener 210 embedded in the left upper flange 131 and the embedded portion of the right stiffener 220 embedded in the right upper flange 132;
And a joining member (240) for joining the other end of the left stiffener (210) and one end of the right stiffener (220) to each other, and a stiffener (200)
A fixing unit 310 coupled to both ends of the stiffener 200 to be exposed at an outer surface of the upper flange 130 and to be embedded at both ends of the upper flange 130;
And a connecting part 320 coupled to the fixing part 310 so as to protrude outward from the upper flange 130,
The fixing portion 310 is coupled to the upper flange 130 such that the coupling surface 311 coupled to the coupling portion 320 is exposed to the outside of the upper flange,
The connection portion 320 is coupled to the coupling surface 311 and protrudes upward from the upper flange 130,
A plurality of the opening-type girders 100 are provided adjacent to each other and the connecting portion 320 of the adjacent girder 100 and the connecting portion 320a of the other girder 100a are provided so as to be in contact with each other,
Wherein the connecting portion (320) of one side of the girder (100) is welded to the contacting portion (A) of the connecting portion (320a) of the other side girder (100a).
delete delete The method according to claim 1,
The male screw portions B are formed in the opposite directions to each other at the end portions of the projections of the left stiffener 210 and the right stiffener 220,
And a female screw portion (241) is formed at both ends of the coupling member (240) so as to be screwed corresponding to the male screw portion (B).
5. The method of claim 4,
Wherein a tension force is introduced to the left stiffener (210) and the right stiffener (220) by rotation of the coupling member (240).
delete delete delete The method according to claim 1,
In the fixing part 310,
And a fixing hole (330) for improving a coupling force with the upper flange (130) is formed.
delete delete A method of constructing a bridge using an opening-type girder according to any one of claims 1, 4, 5, and 9,
A girder fabricating step of fabricating the girder (100) provided with the reinforcing material (200) and the connecting member (300);
A girder mounting step of mounting the girder 100;
A contact portion coupling step of coupling the contact portion (A) formed by a plurality of the girders (100) provided adjacent to each other;
A tensional force introduction step of rotating the coupling member 240 of the connection member 300 to introduce a tensional force to the stiffener 200;
And a bottom plate forming step of placing reinforcing bars on the upper portion of the girder (100) and casting the bottom plate concrete.
KR1020150124712A 2015-09-03 2015-09-03 U-girder with reinforcing member, bridge using the same and the construction method thereof. KR101675040B1 (en)

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KR1020150124712A KR101675040B1 (en) 2015-09-03 2015-09-03 U-girder with reinforcing member, bridge using the same and the construction method thereof.

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KR1020150124712A KR101675040B1 (en) 2015-09-03 2015-09-03 U-girder with reinforcing member, bridge using the same and the construction method thereof.

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101774990B1 (en) 2016-12-23 2017-09-05 주식회사 일승하이텍 Stress-distributing cable bridge using device for reducing sidewalk live load of cable fixture and method for constructing this same
KR101888895B1 (en) * 2017-11-24 2018-09-20 (주)아이오컨스텍 Steel box girder manufacturing method using load transfer member

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101106712B1 (en) * 2011-04-29 2012-01-18 주식회사 에이스이엔씨 Stiffness reinforced structure and method of precast concrete box beam
KR101225662B1 (en) * 2011-12-02 2013-01-25 한국건설기술연구원 Prefabricated precast steel grid composite deck and the construction method therewith
KR20140059941A (en) * 2012-11-09 2014-05-19 지엘기술 주식회사 Successive construction method of prestressed concrete girder reflected compressive load on support and bridge using it

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101106712B1 (en) * 2011-04-29 2012-01-18 주식회사 에이스이엔씨 Stiffness reinforced structure and method of precast concrete box beam
KR101225662B1 (en) * 2011-12-02 2013-01-25 한국건설기술연구원 Prefabricated precast steel grid composite deck and the construction method therewith
KR20140059941A (en) * 2012-11-09 2014-05-19 지엘기술 주식회사 Successive construction method of prestressed concrete girder reflected compressive load on support and bridge using it

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101774990B1 (en) 2016-12-23 2017-09-05 주식회사 일승하이텍 Stress-distributing cable bridge using device for reducing sidewalk live load of cable fixture and method for constructing this same
KR101888895B1 (en) * 2017-11-24 2018-09-20 (주)아이오컨스텍 Steel box girder manufacturing method using load transfer member

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