CN104911989A - Box and truss composite node structure of steel box and truss composite bridge - Google Patents
Box and truss composite node structure of steel box and truss composite bridge Download PDFInfo
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- CN104911989A CN104911989A CN201510223179.1A CN201510223179A CN104911989A CN 104911989 A CN104911989 A CN 104911989A CN 201510223179 A CN201510223179 A CN 201510223179A CN 104911989 A CN104911989 A CN 104911989A
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Abstract
The invention relates to a box and truss composite node structure of a steel box and truss composite bridge. A web member inside connecting plate and a web member outside connecting plate are arranged on a top plate of a steel box; the web member inside connecting plate is aligned to and welded with a steel box inner web plate; and an inverted T-shaped rib of the web member outside connecting plate is aligned to and welded with the web member outside connecting plate. A tuyere is arranged on the outer side of the steel box. A plurality of partitions are arranged in the steel box at a node to enhance the rigidity of the node and improve the stressed state of the node. The steel box is internally provided with whole partitions and semi-partitions; manholes are formed in the whole partitions; and a steel anchor box is arranged in the tuyere to facilitate later maintenance. A man hole is formed in a top plate of the tuyere for later overhaul and maintenance of the node. The steel anchor box of a stay cable of a cable-stayed bridge or a suspension cable of a suspension bridge is arranged in the tuyere and welded on a steel box outside web plate. The structure is convenient to construct and definite and reasonable in stress, transfers a force directly, reduces material usage, can ensure construction quality, facilitates later maintenance, and is applicable to a beam bridge, a cable-stayed bridge and a suspension bridge. The Dongting Lake grand bridge as a railway coal transportation corridor from the west Inner Mongolia to the central China employs the structure, and the application effect is good.
Description
Technical field
The present invention relates to a kind of steel case steel truss composite girder bridge case purlin in conjunction with joint structure.
Background technology
Steel case steel purlin is the key structure that truss web is connected with steel case in conjunction with node.Traditional steel girder bridge mechanical characteristic wants rod member little as much as possible, cause bar cross section less and steel plate is thicker, and the Nodes that winds up is anchored at for suspension cable or hoist cable, due to the restriction of rod member size, construct very inconvenient, and this position is stressed most critical, little bar cross section and thick steel plate result in the difficulty of construction welding.
In steel case steel truss composite girder bridge, lower edge steel box section is large, and plate is thin, and inner space is large, and steel case is main bearing member, truss web and the distortion played steel case that winds up.Suspension cable or hoist cable are anchored on lower edge steel case.
Dongting Lake grand bridge covers the crucial main projects to Central China's railway coal transport facility, is positioned at Hunan Yueyang, adopts steel case-steel truss composite girder three pylon cable-stayed bridge to cross over the outlet channel in Dongting Lake access the Changjiang river, carrying two-wire I level railway.This bridge adopts three pylon cable-stayed bridges and case purlin combining structure, and case purlin combining structure is different from traditional Steel truss structure loading characteristic, needs to design a kind of joint structure adapting to case purlin combining structure.
Summary of the invention
The object of the invention is the Joint's connection fabrication being intended to propose a kind of tool adaptation steel case steel purlin combining structure for above-mentioned present situation, clearly stressed, power transmission is direct, easily manufactured, installs simple, is convenient to the steel case steel truss composite girder bridge case purlin of later maintenance in conjunction with joint structure.
The implementation of the object of the invention is, steel case steel truss composite girder bridge case purlin is in conjunction with joint structure, the top board of steel case is arranged web member connection plate inside, the outer side connecting plate of web member, described web member connection plate inside aligns with steel case endosternum and welds, and the outer side connecting plate of web member aligns with the inverted T-shaped rib of web member junction plate and welds; Steel case arranged outside tuyere, suspension cable or hoist cable steel anchor box are arranged in tuyere, and weld with the outer coxostermum of steel case; In the steel case inside of Nodes, the whole dividing plate of multiple tracks, semiclapboard are set.
Instant invention overcomes conventional steel truss bridge node thickness of slab comparatively large, inner space is little, the shortcoming that welding difficulty is large, easy construction, stressed rationally clear and definite, power transmission is direct, has saved material usage, can construction quality be ensured, be convenient to later maintenance, be applicable to steel case steel truss composite girder bridge case purlin in conjunction with node.
The present invention adopts to Central China's railway coal transport facility Dongting Lake grand bridge in illiteracy, achieves and well uses effect.
Accompanying drawing explanation
Fig. 1 is the drawing of site that the present invention is configured in steel case steel truss composite girder bridge section,
Fig. 2 is the structure sectional view of the present invention at whole dividing plate place,
Fig. 3 is the structure sectional view of the present invention at semiclapboard place,
Fig. 4 is the facade structures figure of the present invention along lower edge steel case longitudinal direction,
Fig. 5 is the structure top view of the present invention at steel case end face.
Detailed description of the invention
With reference to the accompanying drawings in detail the present invention is described in detail.
With reference to Fig. 1, the present invention 1 is arranged on steel case steel truss composite girder bridge case purlin in conjunction with Nodes, and steel case steel truss composite girder bridge case purlin can be made to focus on the larger steel case in lower edge cross section in conjunction with joints major part.
With reference to Fig. 2-5, the top board 14 of steel case is arranged web member connection plate inside 3, the outer side connecting plate 4 of web member, described web member connection plate inside 3 aligns with steel case endosternum 10 and welds, the outer side connecting plate 4 of web member aligns with the inverted T-shaped rib 5 of the outer side connecting plate of web member and welds, can flexibly according to wind up and the stressed of web member determines its rod member width, and not with lower edge steel case with wide.
In the steel case inside of Nodes, the whole dividing plate 8 of multiple tracks, semiclapboard 11 are set to strengthen the rigidity at this position, improve its stress.Described overall dividing plate be at web member and steel case in inner joining and arrange within the scope of web member connected node plate along the longitudinal, in the middle of overall dividing plate, semiclapboard is set again, semiclapboard is set and both can improves local stiffness, inner enough construction spaces can be ensured again.The setting of the inverted T-shaped rib 5 of the outer side connecting plate 4 of web member is the stresses in order to improve the outer side connecting plate of web member, makes its power transmission smooth and easy.The setting of overall dividing plate, semiclapboard is the local stiffness in order to improve web member junction plate position.
Tuyere top board 9 is provided with enter hole 12, the later stage can be facilitated to check and safeguard.
Steel case arranged outside tuyere 7; suspension cable or hoist cable steel anchor box 6 are arranged in tuyere 7; and weld with the outer coxostermum 13 of steel case; the setting of tuyere had both improved the wind resistance of structure; further provide the working platform of steel anchor box construction, and certain protective effect is played to suspension cable or hoist cable anchorage element.
Whole dividing plate 8 arranges manhole 2, is convenient to the maintenance maintenance of its later stage.
Each position of the present invention plate connection all adopts welding manner.
Instant invention overcomes conventional steel truss bridge node thickness of slab comparatively large, inner space is little, and the shortcoming that welding difficulty is large facilitates and manufactures construction, ensure that construction quality, clearly stressed, and power transmission is direct, has saved material usage, has been convenient to later maintenance.
The present invention manufactures easy construction, reasonable stress, and it is convenient to safeguard, is suitable for steel case steel truss composite girder bridge case purlin and adopts in conjunction with node.
The present invention adopts to Central China's railway coal transport facility Dongting Lake grand bridge in illiteracy, achieves and well uses effect.
Claims (4)
1. steel case steel truss composite girder bridge case purlin is in conjunction with joint structure, it is characterized in that: the top board of steel case is arranged web member connection plate inside, the outer side connecting plate of web member, described web member connection plate inside aligns with steel case endosternum and welds, and the inverted T-shaped rib of the outer side connecting plate of web member aligns with the outer side connecting plate of web member and welds; Steel case arranged outside tuyere; In the steel case inside of Nodes, the whole dividing plate of multiple tracks, semiclapboard are set.
2. steel case steel truss composite girder bridge case purlin according to claim 1 is in conjunction with joint structure, it is characterized in that: described overall dividing plate (8) is in web member and the inner joining of steel case and arranges in the scope of web member connected node plate along the longitudinal, arranges semiclapboard (11) again in the middle of overall dividing plate.
3. steel case steel truss composite girder bridge case purlin according to claim 1 is in conjunction with joint structure, it is characterized in that: whole dividing plate (8) is arranged manhole (2); Tuyere top board (9) is established enter hole (12).
4. with steel case steel truss composite girder bridge case purlin according to claim 1 in conjunction with joint structure, it is characterized in that: for cable stayed bridge or suspension bridge, drag-line or hoist cable steel anchor box are arranged in tuyere, and weld with the outer coxostermum of steel case.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510223179.1A CN104911989A (en) | 2015-05-05 | 2015-05-05 | Box and truss composite node structure of steel box and truss composite bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510223179.1A CN104911989A (en) | 2015-05-05 | 2015-05-05 | Box and truss composite node structure of steel box and truss composite bridge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104911989A true CN104911989A (en) | 2015-09-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510223179.1A Pending CN104911989A (en) | 2015-05-05 | 2015-05-05 | Box and truss composite node structure of steel box and truss composite bridge |
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| CN (1) | CN104911989A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107066773A (en) * | 2017-06-19 | 2017-08-18 | 江苏科技大学 | Combine the purlin case equivalent-designing method of purlin web grider bridge |
| CN109056529A (en) * | 2018-09-25 | 2018-12-21 | 中铁二院工程集团有限责任公司 | A kind of steel anchor box suitable for rail iron trusses suspension bridge pin joint formula hoist cable |
| CN110886198A (en) * | 2019-12-25 | 2020-03-17 | 西南交通大学 | Tuyere structure for vortex vibration control of rectangular steel box girder bridge |
| CN112900233A (en) * | 2021-01-21 | 2021-06-04 | 同济大学 | Steel-concrete combined truss girder for stiffening girder of high-speed magnetic suspension large-span cable-stayed bridge |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107066773A (en) * | 2017-06-19 | 2017-08-18 | 江苏科技大学 | Combine the purlin case equivalent-designing method of purlin web grider bridge |
| CN109056529A (en) * | 2018-09-25 | 2018-12-21 | 中铁二院工程集团有限责任公司 | A kind of steel anchor box suitable for rail iron trusses suspension bridge pin joint formula hoist cable |
| CN109056529B (en) * | 2018-09-25 | 2024-03-08 | 中铁二院工程集团有限责任公司 | Steel anchor box suitable for pin joint type sling of railway steel truss girder suspension bridge |
| CN110886198A (en) * | 2019-12-25 | 2020-03-17 | 西南交通大学 | Tuyere structure for vortex vibration control of rectangular steel box girder bridge |
| CN110886198B (en) * | 2019-12-25 | 2021-06-01 | 西南交通大学 | Tuyere structure for vortex vibration control of rectangular steel box girder bridge |
| CN112900233A (en) * | 2021-01-21 | 2021-06-04 | 同济大学 | Steel-concrete combined truss girder for stiffening girder of high-speed magnetic suspension large-span cable-stayed bridge |
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Application publication date: 20150916 |
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