CN107503278B - Truss type steel box girder diaphragm plate - Google Patents
Truss type steel box girder diaphragm plate Download PDFInfo
- Publication number
- CN107503278B CN107503278B CN201710805017.8A CN201710805017A CN107503278B CN 107503278 B CN107503278 B CN 107503278B CN 201710805017 A CN201710805017 A CN 201710805017A CN 107503278 B CN107503278 B CN 107503278B
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- Prior art keywords
- plate
- truss
- box girder
- chord
- steel box
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 82
- 239000010959 steel Substances 0.000 title claims abstract description 82
- 238000005192 partition Methods 0.000 claims 1
- 238000012423 maintenance Methods 0.000 abstract description 8
- 238000010276 construction Methods 0.000 description 8
- 239000007787 solid Substances 0.000 description 5
- 238000005452 bending Methods 0.000 description 4
- 238000003466 welding Methods 0.000 description 4
- 238000009412 basement excavation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000011178 precast concrete Substances 0.000 description 1
Classifications
-
- 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
- E01D2/04—Bridges characterised by the cross-section of their bearing spanning structure of the box-girder type
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention particularly relates to a truss type steel box girder diaphragm plate, which comprises a diaphragm plate arranged in a steel box girder and is characterized in that the diaphragm plate adopts a truss type structure, and the truss type structure is welded with the inner wall of the steel box girder to form a truss type steel box girder structure. The truss diaphragm plate is positioned in the steel box girder, so that the structural arrangement in the steel box girder box chamber is simplified, the steel consumption of the steel box girder is reduced, the internal space of the steel box girder is increased, and the arrangement, maintenance and maintenance of pipelines in the steel box girder are facilitated.
Description
Technical Field
The invention relates to the technical field of bridge engineering, in particular to a truss type steel box girder diaphragm plate.
Background
The steel box girder is a closed box structure formed by connecting a top plate, a bottom plate, a web plate, a diaphragm plate, stiffening ribs and the like in a welding mode. The steel box girder is a common structural form of a large span bridge because the box structure has good bending resistance, torsion resistance and lateral stability. The steel box girder is increasingly widely applied to small-radius, special-shaped girders, crossing points, building height limitation, and small-and medium-span bridge engineering with rapid construction and bridge landscape requirements.
The thicknesses of the top and bottom plates and the web plates of the steel box girder are very small compared with the height and the width of the bridge, and the steel box girder is a typical closed thin-wall structure. To prevent transverse bending, torsion and distortion of the steel box girder section, and to maintain the shape of the box section, sufficient transverse diaphragms must be provided.
Conventional steel case roof beam diaphragm adopts solid web formula diaphragm plate structure, and as shown in fig. 1, the diaphragm is a steel sheet, can carry out the excavation to a certain extent according to the demand to satisfy construction and maintenance's needs. Because the rigidity outside the steel plate surface is lower, in order to ensure that the diaphragm plate has enough rigidity, vertical and transverse stiffening is required to be arranged on the diaphragm plate.
The conventional diaphragm plate adopts a solid-web steel plate with stiffening, so that the welding workload is large, and the construction is complex. Meanwhile, the solid-web steel diaphragm plate is not beneficial to the passing of personnel and the passing of the management and maintenance equipment during construction and operation. In addition, the steel quantity index of the solid diaphragm plate is high, and the technical economy is poor. Therefore, according to the structural characteristics of the steel box girder, the simplicity of the structure of the diaphragm plate, the economy of indexes and the convenience of construction, operation and maintenance are realized on the premise of ensuring the strength, the rigidity and the stability of the bridge.
Disclosure of Invention
Aiming at the problems, the invention provides the truss type steel box girder diaphragm plate, which reduces the steel consumption and improves the space of the internal structure of the steel box girder on the premise of ensuring the torsion resistance and the distortion resistance of the steel box girder diaphragm plate, so that the steel box girder is more convenient in construction, operation and maintenance.
The realization of the invention is completed by the following technical scheme: the truss type steel box girder diaphragm plate comprises a diaphragm plate arranged in a steel box girder and is characterized in that the diaphragm plate adopts a truss type structure, and the truss type structure is welded with the inner wall of the steel box girder to form a truss type steel box girder structure.
Further, the steel box girder consists of a top plate, a bottom plate, a web plate and corresponding stiffening members, and the top plate, the bottom plate and the web plate of the steel box girder are connected through welding to form a closed structure.
Further, the diaphragm plate comprises an upper chord member, a lower chord member, a web plate vertical stiffening plate, an upper chord node plate, a lower chord node plate and a truss web member, and the truss web member is respectively welded and connected with the upper chord member and the lower chord member through the upper chord node plate and the lower chord node plate to form a truss structure.
Further, the upper chord member is composed of a T-shaped member composed of an upper chord member web plate and an upper chord member wing plate.
Further, the lower chord member is composed of a T-shaped member composed of a lower chord member web plate and a lower chord member wing plate.
Further, the truss web member is composed of steel sections such as steel pipes or channel steel with circular cross sections.
The invention relates to a truss type steel box girder diaphragm plate, wherein a steel box girder adopts an all-steel structure without precast concrete plates. The upper chord member and the lower chord member of the truss type diaphragm plate are welded with the top plate and the bottom plate of the steel box girder respectively to form a whole, and the upper chord member and the lower chord member of the truss type diaphragm plate are welded by steel plates, belong to transverse force transfer components, and play an important role in preventing transverse bending, torsion and distortion deformation of the steel box girder from a construction stage to an operation stage. The invention has the advantages that: ① Reducing the steel consumption of the steel box girder; ② The truss web member adopts section steel, so that the construction is convenient; ③ Increasing the internal space of the steel box girder; ④ The arrangement of pipelines in the box girder is convenient; And the later maintenance is convenient.
Drawings
The invention will be described in more detail hereinafter on the basis of embodiments and with reference to the accompanying drawings. Wherein:
fig. 1 is a schematic view of a prior art solid steel box girder diaphragm.
Fig. 2 is a schematic view of a truss steel box girder diaphragm plate in the present invention.
FIG. 3 is a cross-sectional view A-A of FIG. 2 in accordance with the present invention.
FIG. 4 is a cross-sectional view B-B of FIG. 2 in accordance with the present invention.
Fig. 5 is a cross-sectional view of fig. 2 (truss web members are circular cross-section steel tubes) in accordance with the present invention.
Fig. 6 is a cross-sectional view of fig. 2 (truss web members are channel members) in accordance with the present invention.
Fig. 7 is a detailed view of the connection of the gusset and web members of fig. 2 (the truss web members are circular section steel tubes) in accordance with the present invention.
Fig. 8 is a detailed view of the gusset and web connection of fig. 2 of the present invention (truss web is channel).
Detailed Description
The features of the present invention and other related features are described in further detail below by way of example in conjunction with the following drawings, to facilitate understanding by those skilled in the art:
as shown in fig. 1-8, reference numerals 1-13 are respectively: the steel box girder top plate 1, the steel box girder bottom plate 2, the steel box girder web plate 3, the top plate longitudinal stiffening 4, the bottom plate longitudinal stiffening 5, the web plate vertical stiffening 6, the truss upper chord member 7, the truss upper chord member web 7a, the truss upper chord member flange plate 7b, the truss lower chord member 8, the truss lower chord member web 8a, the truss lower chord member flange plate 8b, the truss web 9, the circular section steel pipe 9a, the channel steel 9b, the upper chord node plate 10, the lower chord node plate 11, the solid web diaphragm 12, the diaphragm transverse stiffening 12a, the diaphragm vertical stiffening 12b and the overhaul hole 13.
Examples: as shown in fig. 2, this embodiment provides a truss type steel box girder diaphragm. The diaphragm plate is composed of a truss upper chord 7, a truss lower chord 8, a truss web 9, an upper chord node plate 10, a lower chord node plate 11 and the like. The truss upper chord 7 is composed of a T-shaped member composed of a truss upper chord web 7a and a truss upper chord flange plate 7b, the truss lower chord 8 is composed of a T-shaped member composed of a truss lower chord web 8a and a truss lower chord flange plate 8b, and the truss web 9 is composed of steel sections such as round section steel pipes 9a or channel steel 9 b.
In the truss diaphragm, truss web members 9 are welded to truss upper chords 7 and 8 through upper chord node plates 10 and lower chord node plates 11, respectively, to form a truss structure. The truss structure is welded and connected with the inner wall of a closed box structure formed by welding and connecting the steel box girder top plate 1, the steel box girder bottom plate 2 and the steel box girder web plate 3, so that a truss type steel box girder structure is formed.
The conventional steel box girder diaphragm plate consists of a solid diaphragm plate 12, a diaphragm plate transverse stiffening 12a and a diaphragm plate vertical stiffening 12b, necessary access holes 13 are arranged according to the needs, the diaphragm plate takes a plate as a unit, belongs to a plate girder structure and mainly takes bent and sheared members, and the truss type steel box girder diaphragm plate of the invention takes all rod members as units, belongs to a truss structure and mainly takes the axial force of the rod members. The two diaphragm plates have different stress mechanisms, but have enough in-plane and out-of-plane rigidity, and can effectively resist transverse bending, torsion and distortion of the steel box girder.
The truss diaphragm plate not only simplifies the structural arrangement of the inside of the steel box girder box and reduces the steel consumption of the steel box girder, but also increases the internal space of the steel box girder, thereby being convenient for the arrangement, maintenance and repair of pipelines in the steel box girder.
Claims (1)
1. The truss type steel box girder diaphragm plate is characterized in that the diaphragm plate adopts a truss type structure, the truss type structure is welded with the inner wall of the steel box girder to form a truss type steel box girder structure, the steel box girder consists of a top plate, a bottom plate, a web plate and corresponding stiffening members, the top plate, the bottom plate and the web plate of the steel box girder are welded to form a closed structure, and the web plate is not arranged in the closed structure; the transverse partition plate consists of an upper truss chord member, a lower truss chord member, web vertical stiffening, an upper chord node plate, a lower chord node plate and truss web members, wherein the truss web members are respectively connected with the upper truss chord member and the lower truss chord member in a welded manner through the upper chord node plate and the lower chord node plate to form a truss structure, a first lower chord node plate and a second lower chord node plate are respectively arranged on two sides of the lower truss chord member, a third lower chord node plate is arranged in the middle of the lower truss chord member, two upper chord node plates are arranged on the upper truss chord member, the first upper chord node plate is positioned between the first lower chord node plate and the third lower chord node plate, the second upper chord node plate is positioned between the second lower chord node plate and the third lower chord node plate, a first truss web member is arranged between the first upper chord node plate and the third lower chord node plate, a third web member is arranged between the second upper chord node plate and the third lower chord node plate, and a fourth chord node plate is arranged between the second upper chord node plate and the fourth chord node plate; the truss upper chord consists of a T-shaped member consisting of a truss upper chord web plate and a truss upper chord wing plate; the lower chord member is composed of a T-shaped member composed of a web plate of the lower chord member and wing plates of the lower chord member; truss web members are composed of circular section steel pipes or channel steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710805017.8A CN107503278B (en) | 2017-09-08 | 2017-09-08 | Truss type steel box girder diaphragm plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710805017.8A CN107503278B (en) | 2017-09-08 | 2017-09-08 | Truss type steel box girder diaphragm plate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107503278A CN107503278A (en) | 2017-12-22 |
| CN107503278B true CN107503278B (en) | 2024-10-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710805017.8A Active CN107503278B (en) | 2017-09-08 | 2017-09-08 | Truss type steel box girder diaphragm plate |
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| CN (1) | CN107503278B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108004911A (en) * | 2018-01-19 | 2018-05-08 | 郑州市交通规划勘察设计研究院 | Chamfering strengthens rigid frame formula steel diaphragm plate and its construction method |
| CN109778661B (en) * | 2019-01-21 | 2024-12-20 | 浙江工业大学 | Three-point adjustable steel truss T-beam cross beam |
| CN111560839B (en) * | 2020-03-30 | 2025-04-22 | 上海市政工程设计研究总院（集团）有限公司 | A large cantilever steel box girder |
| CN111794077A (en) * | 2020-07-10 | 2020-10-20 | 重庆市交通规划勘察设计院有限公司 | A new type of truss-type diaphragm for stiffening steel box girder of a suspension bridge and its operation method |
| CN111926677A (en) * | 2020-07-20 | 2020-11-13 | 深圳市市政设计研究院有限公司 | Built-in pipeline groove steel box girder combined beam bridge structure and construction method thereof |
| CN114775422B (en) * | 2022-06-20 | 2022-09-23 | 江苏润扬大桥发展有限责任公司 | Inside U rib of steel case roof beam detects operating system |
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| FR2546930B2 (en) * | 1980-11-25 | 1986-04-18 | Bouygues Sa | PRE-STRESSED CONCRETE STRUCTURE, METHOD FOR MANUFACTURING SAME, AND ELEMENTS FOR IMPLEMENTING THE PROCESS |
| KR100423757B1 (en) * | 2001-05-04 | 2004-03-22 | 원대연 | Prestressed composite truss girder and construction method of the same |
| JP2003119718A (en) * | 2001-10-09 | 2003-04-23 | Haltec:Kk | Bridge |
| KR20020035038A (en) * | 2002-03-08 | 2002-05-09 | 정선희 | mould form apparatus for box girder of ILM and method of construction for box-girder |
| JP3844743B2 (en) * | 2003-03-24 | 2006-11-15 | オリエンタル建設株式会社 | Box girder bridge structure and its construction method |
| KR101198911B1 (en) * | 2010-05-10 | 2012-11-08 | 정상희 | Construction technique of concrete box girder and this |
| CN102535355B (en) * | 2012-02-21 | 2013-09-04 | 朔黄铁路发展有限责任公司 | Method for reinforcing bridge structure separated steel-concrete combined truss |
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| CN202139530U (en) * | 2011-06-22 | 2012-02-08 | 上海市政工程设计研究总院（集团）有限公司 | Single cell box long cantilever and box girder integrated structure |
| CN203977274U (en) * | 2014-01-16 | 2014-12-03 | 天环建设集团有限公司 | A kind of Truss Steel case beam |
| CN107100065A (en) * | 2016-02-22 | 2017-08-29 | 郑州大学 | A kind of compound section steel box girder and its method of construction for high-speed railway |
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| Publication number | Publication date |
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| CN107503278A (en) | 2017-12-22 |
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