WO2010123211A2 - Web member of composite truss girder and node connecting structure of composite truss girder using the same - Google Patents

Web member of composite truss girder and node connecting structure of composite truss girder using the same Download PDF

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Publication number
WO2010123211A2
WO2010123211A2 PCT/KR2010/002133 KR2010002133W WO2010123211A2 WO 2010123211 A2 WO2010123211 A2 WO 2010123211A2 KR 2010002133 W KR2010002133 W KR 2010002133W WO 2010123211 A2 WO2010123211 A2 WO 2010123211A2
Authority
WO
WIPO (PCT)
Prior art keywords
steel tube
web member
steel
connecting plate
truss girder
Prior art date
Application number
PCT/KR2010/002133
Other languages
English (en)
French (fr)
Other versions
WO2010123211A3 (en
Inventor
Dae-Yon Won
Original Assignee
Girder Innovation Forever 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 Girder Innovation Forever Co., Ltd. filed Critical Girder Innovation Forever Co., Ltd.
Priority to JP2012507137A priority Critical patent/JP5506001B2/ja
Publication of WO2010123211A2 publication Critical patent/WO2010123211A2/en
Publication of WO2010123211A3 publication Critical patent/WO2010123211A3/en

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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
    • E04B9/00—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation
    • E04B9/22—Connection of slabs, panels, sheets or the like to the supporting construction
    • E04B9/24—Connection of slabs, panels, sheets or the like to the supporting construction with the slabs, panels, sheets or the like positioned on the upperside of, or held against the underside of the horizontal flanges of the supporting construction or accessory means connected thereto
    • E04B9/245—Connection of slabs, panels, sheets or the like to the supporting construction with the slabs, panels, sheets or the like positioned on the upperside of, or held against the underside of the horizontal flanges of the supporting construction or accessory means connected thereto by means of screws, bolts or clamping strips held against the underside of the supporting construction
    • 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
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B5/00—Floors; Floor construction with regard to insulation; Connections specially adapted therefor
    • E04B5/16—Load-carrying floor structures wholly or partly cast or similarly formed in situ
    • E04B5/32—Floor structures wholly cast in situ with or without form units or reinforcements
    • E04B5/36—Floor structures wholly cast in situ with or without form units or reinforcements with form units as part of the floor
    • E04B5/38—Floor structures wholly cast in situ with or without form units or reinforcements with form units as part of the floor with slab-shaped form units acting simultaneously as reinforcement; Form slabs with reinforcements extending laterally outside the element
    • E04B5/40—Floor structures wholly cast in situ with or without form units or reinforcements with form units as part of the floor with slab-shaped form units acting simultaneously as reinforcement; Form slabs with reinforcements extending laterally outside the element with metal form-slabs
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B9/00—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation
    • E04B9/06—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation characterised by constructional features of the supporting construction, e.g. cross section or material of framework members
    • E04B9/065—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation characterised by constructional features of the supporting construction, e.g. cross section or material of framework members comprising supporting beams having a folded cross-section
    • E04B9/067—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation characterised by constructional features of the supporting construction, e.g. cross section or material of framework members comprising supporting beams having a folded cross-section with inverted T-shaped cross-section
    • E04B9/068—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation characterised by constructional features of the supporting construction, e.g. cross section or material of framework members comprising supporting beams having a folded cross-section with inverted T-shaped cross-section with double web
    • 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

Definitions

  • the present invention relates to a web member of a composite truss girder that uses a steel tube for structural purposes as the web member and a node connecting structure of a composite truss girder using the same, which allows an outer diameter of the steel tube used as the web member to be kept as a single value over the entire span of a target bridge.
  • a web member of a composite truss girder plays a structural role of converting a vertical force in a gravity direction, generated by a weight of the girder itself, an overburden load and a travelling load such as a vehicle load, into an axial force in a node region and transferring it to a bridge bearing.
  • dimensions (e.g., outer diameter and thickness) of the steel tube serving as the web member of a composite truss girder are generally set into three to five different types over the entire span of the bridge when a bridge is designed and constructed.
  • chords upper and lower chords used in a composite truss girder are coupled with the web member through a node.
  • a node structure with rigid connection in which a web member is directly buried in the chord is usually used.
  • the steel tube should be designed to resist the axial force and the bending moment at the same time.
  • the diameter of the steel tube is greater, the stress caused by the bending moment is increased, so it is required to use a steel tube with a greater diameter. Disclosure of Invention Technical Problem
  • a ready-made steel tube mass-produced using a rolled coil in a factory is usually used for a web member of a composite truss girder.
  • a manufactured steel tube made by directly rolling a steel plate for structural purposes may be used.
  • the manufactured steel tube is advantageous in that a designer may select strength, thickness and diameter of a steel plate as desires, but the manufactured steel tube is much more expensive than the ready-made steel tube, and also the manufactured steel tube does not ensure uniform quality.
  • the ready-made steel tube is cheaper than the manufactured steel tube, but its dimensions (strength, diameter and thickness) are already set, so a designer has a limitation in selecting the dimension of a steel tube. Also, in order to optimize an amount of steels used for the web member and the connecting structure, the entire span of a subject bridge should be divided into three to five regions, and steel tubes with different dimensions should be used for each region.
  • a diameter of a steel tube located at the center of the span is significantly different from a diameter of a steel tube located near the bridge bearing in case they are designed suitably for a section force applied to each steel tube, which deteriorates an appearance. If the difference in diameter of the steel tubes is decreased to improve the appearance, an amount of used steel tubes is greater than an amount actually demanded in consideration of stress, which deteriorates economics.
  • the web member used in a composite truss girder is generally designed to have a diameter of 500 mm or less.
  • an external unbonded tendon causing an upward force is used together so as to decrease the diameter of the web member.
  • the span length exceeds 110 meters, the demanded length of steel tubes based on structural calculation is greatly increased, which can be hardly applied to a composite truss girder.
  • the present invention is directed to developing a web member structure in which manufactured steel tubes with only one dimension are used for web members of a composite truss girder over the entire span of a subject bridge and also an amount of steel consumed for the web members may be optimized to a demanded value based on structural calculation, thereby saving costs for making the web members and the connecting structure and also reducing processes and costs used for purchasing steel tubes.
  • the present invention is also directed to developing a web member structure in which a diameter of steel tubes used for the web member is limited within 500 mm though a span length of the composite truss girder exceeds 110 meters, and which may resist an axial force and a moment applied to the web member, thereby allowing to expand an available span length of the composite truss girder even to 200 meters.
  • a web member of a composite truss girder in which an additional structural steel is disposed in a steel tube and then the additional structural steel and the steel tube are structurally integrated at an end of the web member such that the steel tube and the structural steel disposed in the steel tube may share the section force applied to the web member with magnitudes intended by a designer.
  • a designer may control the magnitude of a section force resisted by the steel tube over the entire span of a subject composite truss girder, so steel tubes of the same dimension may be used for the entire bridge.
  • the other section force exceeding a resisting ability of the steel tube may be resisted by the structural steel disposed in the steel tube.
  • the change of a section force according to the location of the web member may be coped with by adjusting dimensions of the structural steel disposed in the steel tube.
  • the section force applied to each web member is divided to the steel tube and the inner steel member with given magnitudes through the end connecting plate installed at an end of the web member.
  • the steel disposed in the steel tube shows a structural behavior vulnerable to buckling.
  • the steel tube is filled with concrete such that the steel tube and the inner steel member behavior integrally.
  • the web member and the node connecting structure according to the present invention are applied to a composite truss girder, it is possible to use manufactured steel tubes of only one dimension as web members over the entire span of a subject bridge.
  • the following effects are expected: firstly saving a cost for purchasing the steel tubes, secondly greatly reducing costs required for making the node connecting structure by simplifying the node connecting structure, and thirdly improving an appearance of a bridge by exposing steel tubes with a regular size.
  • FIG. 1 is sectional view showing a web member of a composite truss girder according to the present invention
  • FIG. 2 is a perspective view showing a node of a composite truss girder according to the present invention
  • FIG. 3 is a diagram illustrating the flow of force at a node connecting structure according to the present invention.
  • FIG. 4 is a diagram showing an additional moment generated due to the discord of axial lines of the web members at the node;
  • FIGs. 5a to 5c illustrate the sequence of making the web member according to the present invention.
  • Figs. 6a to 6c show examples of constructing a composite truss girder using the web members according to the present invention.
  • FIG. 1 is a sectional view showing a web member according to the present invention.
  • the web member 10 includes an external steel tube 11, an inner steel member 12 and an end connecting plate 13.
  • the web member 10 is configured to distribute an axial force transferred through the end connecting plate 13 respectively to the external steel tube 11 and the inner steel member 12.
  • the external steel tube 11 may cope with the change of a section force applied to the web member 10 at each location while keeping the dimensions of the external steel tube 11 constantly by changing only size and thickness of the inner steel member 12 buried in the steel tube.
  • FIG. 2 is a perspective view showing a detailed structure of a node that connects the web members 10 according to the present invention with each other. Seeing the detailed structure of the node according to the present invention, a side connecting plate 14 with a predetermined thickness is welded to both sides of the upper or lower end connecting plate 13 of web members 10 adjacent to each other, and a plurality of holes 15 with a predetermined size are formed in front and rear portions of the side connecting plate 14.
  • FIG. 3 is a diagram showing the process of transferring a force at the node, generated when the detailed structure of the node according to the present invention is applied. Seeing both web members 10 coupled by the side connecting plate 14, a compression force C is applied to one web member and a tensional force T is applied to the other web member in the structural aspect. Hereinafter, in the following explanation, it is assumed that a compression force C is applied to the right web member for the convenience.
  • the force C transferred to the side connecting plate 14 is divided into a horizontal force Ch and a vertical force Cv, respectively.
  • the horizontal force Ch is transferred to the concrete chords 16, 20 through a bearing pressure of the concrete located at the front of the end connecting plate 13.
  • the side connecting plate made of steel resists the vertical force causing a harmful behavior toward the concrete chords, and the bearing force of the concrete located at the front of the end connecting plate resists the horizontal force of the node. In this way, the safety of the concrete chords located at the node region is greatly improved rather than existing node structures.
  • a plurality of holes 15 with a predetermined size are formed at the front and rear portions of the side connecting plate 14 such that the side connecting plate 14 and the concrete chords 16, 20 surrounding the side connecting plate 14 may integrally make a rotational strain with respect to the bending moment M.
  • the size and number of prepared holes are determined to make a resistance against a coupling force R caused by the bending moment M.
  • FIGs. 5a to 5c illustrate the sequence of making the web member according to the present invention.
  • the external steel tube 11, the inner steel member 12 and the end connecting plate 13 are prepared with suitable shapes. After that, the external steel tube 11 and the end connecting plate 13 are welded with each other as indicated by the reference numeral 18, and then the inner steel member 12 and the end connecting plate 13, inserted into the external steel tube 11, are welded with each other as indicated by the reference numeral 19.
  • FIGs. 6a to 6c illustrate examples of constructing a composite truss girder using the web members according to the present invention.
  • a web member 10 prepared in a factory are carried to a bridge construction spot, and then the side connecting plate 14 is welded to the end connecting plate 13 of the web member, thereby forming a truss web framework.
  • each web member 10 is filled with concrete, and then an upper concrete chord 20 is constructed to completely make a composite truss girder.
PCT/KR2010/002133 2009-04-20 2010-04-07 Web member of composite truss girder and node connecting structure of composite truss girder using the same WO2010123211A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2012507137A JP5506001B2 (ja) 2009-04-20 2010-04-07 複合トラス桁橋の腹材、及びこれを用いた複合トラス桁橋の節点連結構造

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2009-0034087 2009-04-20
KR1020090034087A KR101226597B1 (ko) 2009-04-20 2009-04-20 복합트러스 거더교의 복부재 및 이를 이용한 격점 연결구조

Publications (2)

Publication Number Publication Date
WO2010123211A2 true WO2010123211A2 (en) 2010-10-28
WO2010123211A3 WO2010123211A3 (en) 2011-01-13

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PCT/KR2010/002133 WO2010123211A2 (en) 2009-04-20 2010-04-07 Web member of composite truss girder and node connecting structure of composite truss girder using the same

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Country Link
JP (1) JP5506001B2 (ko)
KR (1) KR101226597B1 (ko)
CN (1) CN101864724B (ko)
WO (1) WO2010123211A2 (ko)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102505761B (zh) * 2011-12-13 2013-08-14 中船第九设计研究院工程有限公司 一种钢管桁架节点的连接结构
KR101590065B1 (ko) 2015-09-10 2016-01-29 주식회사 우정테크 조립형 합성 트러스거더 및 그 시공방법
CN113668694B (zh) * 2021-07-09 2022-07-26 中建一局集团建设发展有限公司 一种避免悬挑桁架与拉索及吊柱交叉的连接节点及施工方法
CN113403935A (zh) * 2021-08-03 2021-09-17 四川省公路规划勘察设计研究院有限公司 一种钢管混凝土桁式结构桥梁弦杆与腹杆连接节点构造

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JP2003286705A (ja) * 2002-03-28 2003-10-10 Oriental Construction Co Ltd 複合トラス橋斜材定着構造
JP2008156967A (ja) * 2006-12-26 2008-07-10 Fuji Ps Corp 合成トラス桁構造

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JP3207795B2 (ja) * 1997-10-22 2001-09-10 株式会社巴コーポレーション 立体トラス構造物
JP3948809B2 (ja) * 1998-02-05 2007-07-25 三井住友建設株式会社 コンクリート部材と鋼管部材との接合構造及び接合方法、並びにコンクリート・鋼複合トラス橋
JP2000170247A (ja) * 1998-12-04 2000-06-20 Nkk Corp 座屈補剛部材
JP4154099B2 (ja) * 1999-12-03 2008-09-24 三井住友建設株式会社 鋼管部材とコンクリート部材との接合構造
JP4045994B2 (ja) * 2003-04-02 2008-02-13 鹿島建設株式会社 鋼とコンクリートの接合構造
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CN100547202C (zh) * 2006-04-03 2009-10-07 杨峰 大跨度组合桁架
CN101200965B (zh) * 2007-12-18 2011-12-07 北京别一阁钢结构科技开发有限公司 冲压成型的金属连接板及桁架
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Patent Citations (2)

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Publication number Priority date Publication date Assignee Title
JP2003286705A (ja) * 2002-03-28 2003-10-10 Oriental Construction Co Ltd 複合トラス橋斜材定着構造
JP2008156967A (ja) * 2006-12-26 2008-07-10 Fuji Ps Corp 合成トラス桁構造

Also Published As

Publication number Publication date
JP5506001B2 (ja) 2014-05-28
JP2012524193A (ja) 2012-10-11
CN101864724A (zh) 2010-10-20
CN101864724B (zh) 2012-10-24
WO2010123211A3 (en) 2011-01-13
KR20090055530A (ko) 2009-06-02
KR101226597B1 (ko) 2013-02-05

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