CN102852091A - Orthotropic steel bridge deck structure with V-shaped stiffening ribs - Google Patents
Orthotropic steel bridge deck structure with V-shaped stiffening ribs Download PDFInfo
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- CN102852091A CN102852091A CN2012103801322A CN201210380132A CN102852091A CN 102852091 A CN102852091 A CN 102852091A CN 2012103801322 A CN2012103801322 A CN 2012103801322A CN 201210380132 A CN201210380132 A CN 201210380132A CN 102852091 A CN102852091 A CN 102852091A
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Abstract
The invention discloses an orthotropic steel bridge deck structure with V-shaped stiffening ribs, comprising a box girder and steel bridge deck slabs, wherein the box girder mainly comprises middle longitudinal diaphragms, side longitudinal diaphragms and a transverse diaphragm; the steel bridge deck slabs are arranged on the top of the box girder; a plurality of V-shaped stiffening ribs are uniformly arranged at the bottom of the heavy load area of the steel bridge deck slabs; a plurality of inverted trapezium-shaped stiffening ribs are uniformly arranged at bottoms of steel bridge deck slabs at two sides of the heavy load area; a plurality of first via holes matched with the V-shaped stiffening ribs and a plurality of second via holes matched with the inverted trapezium-shaped stiffening ribs are arranged on the transverse diaphragm; the V-shaped stiffening ribs are fixedly connected with the transverse diaphragm through the first via holes; and the inverted trapezium-shaped stiffening ribs are fixedly connected with the transverse diaphragm through the second via holes. According to the invention, the V-shaped stiffening ribs are arranged at the heavy load area, therefore, compared with a conventional structure with the inverted trapezium-shaped stiffening ribs, the structure disclosed by the invention has the advantages that the fatigue stress amplitude of sensitive positions of the orthotropic steel bridge deck is lesser; the fatigue performance is better; the fatigue life of the structure is longer; and the requirement for service life can be better satisfied.
Description
Technical field
The present invention relates to the bridge construction technical field, be specifically related to a kind of V rib orthotropic steel bridge deck structure of putting more energy into.
Technical background
Orthotropic steel bridge deck is comprised of thinner panel, longitudinal rib and cross rib, and the three is vertical each other, and the integrally welded bridge floor load that bears because the rigidity on mutually perpendicular direction is different, presents anisotropy in stressed behavior.
Whether closure is divided into remain silent stiffening rib and Research on Open Stiffener to the longitudinal rib of steel bridge deck by the stiffening rib cross section.Rib and the open ribs of remaining silent is different according to section form, can be subdivided into again a variety of.At present, open ribs commonly used mainly contains plain plate (dull and stereotyped rib), unequal angle (L shaped rib) and T shape combination rib (rib of falling T), and the rib of remaining silent adopts trapezoidal stiffening rib mostly.
In recent ten years, China has built many suspension bridge and the cable stayed bridges that adopt orthotropic steel bridge deck.The fatigue problem of steel bridge deck is the problem that receives much concern always, a lot of steel bridges, the heavily loaded steel bridges such as highway of railway, city rail and current lorry particularly, under arms soon, the especially vertical rib of heavy duty district steel bridge deck and cross rib arc opening place have produced fatigue crack in various degree, and present early onset, multiple, reproducibility state, and then have a strong impact on the fatigue durability of steel bridge, greatly shorten the application life of bridge.
How to avoid the generation of fatigue crack, guarantee that the Orthotropic Steel Bridge Deck durability also all is a heavy difficult point problem for a long time.In the present real bridge design, solve the steel bridge deck fatigue problem and mainly contain two kinds of measures: a kind of is that bridge deck structure is used concrete slab instead, and such as Donghai Bridge, Wuhan two or seven Yangtze Bridge, girder is the superposed beam structure, and bridge floor adopts concrete slab.This measure concrete slab weight is larger, is very uneconomic concerning steel bridge.Another measure is exactly that Proper Match is indulged rib, cross rib and bridge deck size, constructs appropriate arc incision size.Because railway, highway bridge imposed load are different with rigidity requirement, this measure is too fuzzy and empirical, and practical application is comparatively random and difficult.Thereby for steel bridge, particularly stride greatly heavily loaded steel bridge, the longitudinal stiffener form of orthotropic steel bridge deck also is one of research direction.
Summary of the invention
The objective of the invention is provides a kind of long service life for above-mentioned technical problem, the V rib that is not easy the to produce fatigue crack orthotropic steel bridge deck structure of putting more energy into.
For realizing this purpose, the designed V rib of the present invention orthotropic steel bridge deck structure of putting more energy into, comprise mainly by the middle mediastinum plate, the case beam that limit midfeather and diaphragm consist of, be arranged on the steel bridge deck of case back section, it is characterized in that: the heavy duty district bottom even of described steel bridge deck arranges many V-type stiffening ribs, the steel bridge deck bottom even of both sides, heavy duty district arranges many inverted trapezoidal stiffening ribs, offer the first via hole a plurality of and V-type stiffening rib coupling on the described diaphragm, also offer the second via hole a plurality of and inverted trapezoidal stiffening rib coupling on the described diaphragm, described V-type stiffening rib is fixedly connected with diaphragm by the first via hole, and described inverted trapezoidal stiffening rib is fixedly connected with diaphragm by the second via hole.
The heavy duty district of described steel bridge deck is railway ballast groove scope or the carriageway plate scope of city rail bridge or the lorry runway scope of highway bridge of railroad bridge.
The spacing of described adjacent two V-type stiffening ribs is 550 ~ 650mm.
The height of described V-type stiffening rib is 300 ~ 320mm.
The A/F of described V-type stiffening rib is 280 ~ 320mm.
The bottom bend radius of described V-type stiffening rib is 45 ~ 55mm.
The thickness of described V-type stiffening rib is 9 ~ 11mm.
The spacing of described adjacent two inverted trapezoidal stiffening ribs is 550 ~ 650mm.
The bottom bend radius of described V-type stiffening rib is 5 times of V-type stiffening rib thickness.
The present invention is by arranging the V-type stiffening rib in heavy duty district steel bridge deck bottom, compare with the inverted trapezoidal stiffening rib of routine, in the situation that the basic equivalence of stiffening rib area and the bending resistance moments of inertia, the attachment weld length of the former and diaphragm is about 1.3 times of the latter, the remarkable lengthening of stressed weld seam is so that diaphragm provides more powerful elastomeric bearing to the V-type stiffening rib, thereby improved distortion and the stress of V-type stiffening rib and this stressed sensitizing range of diaphragm connecting portion, fatigue behaviour is improved.
Description of drawings
Fig. 1 is structural representation of the present invention;
Fig. 2 is the structural representation of adjacent two V-type stiffening ribs part among the present invention;
Wherein, 1-case beam, 1.1-middle mediastinum plate, 1.2-limit midfeather, 1.3-diaphragm, 2-steel bridge deck, 3-V-type stiffening rib, 4-inverted trapezoidal stiffening rib, the 5-the first via hole, the 6-the second via hole, A-heavy duty district, the spacing of B-adjacent two V-type stiffening ribs, the A/F of b-V-type stiffening rib, the height of h-V-type stiffening rib, the bottom bend radius of R-V-type stiffening rib, the thickness of t-V-type stiffening rib.
The specific embodiment
The present invention is described in further detail below in conjunction with drawings and Examples:
The orthotropic steel bridge deck structure of putting more energy into of V rib as illustrated in fig. 1 and 2, comprise mainly by middle mediastinum plate 1.1, the case beam 1 that limit midfeather 1.2 and diaphragm 1.3 consist of, be arranged on the steel bridge deck 2 at case beam 1 top, the heavy duty district A bottom even of steel bridge deck 2 arranges many V-type stiffening ribs 3, steel bridge deck 2 bottom evens of A both sides, heavy duty district arrange many inverted trapezoidal stiffening ribs 4, offer the first via holes 5 a plurality of and V-type stiffening rib 3 couplings on the diaphragm 1.3, also offer the second via holes 6 a plurality of and inverted trapezoidal stiffening rib 4 couplings on the diaphragm 1.3, V-type stiffening rib 3 is welded to connect with diaphragm 1.3 by the first via hole 5, and inverted trapezoidal stiffening rib 4 is welded to connect with diaphragm 1.3 by the second via hole 6.
In the technique scheme, the heavy duty district A of steel bridge deck 2 is railway ballast groove scope or the carriageway plate scope of city rail bridge or the lorry runway scope of highway bridge of railroad bridge.
In the technique scheme, the spacing B of adjacent two V-type stiffening ribs 3 is 550 ~ 650mm, wherein is preferably 600mm.
In the technique scheme, the height h of V-type stiffening rib 3 is 300 ~ 320mm, wherein is preferably 310mm.
In the technique scheme, the A/F b of V-type stiffening rib 3 is 280 ~ 320mm, wherein is preferably 300mm.
In the technique scheme, the bottom bend radius R of V-type stiffening rib 3 is 45 ~ 55mm, wherein is preferably 50mm.
In the technique scheme, the spacing of adjacent two inverted trapezoidal stiffening ribs 4 is 550 ~ 650mm, wherein is preferably 600mm.
In the technique scheme, the thickness t of V-type stiffening rib 3 is 9 ~ 11mm, wherein is preferably 10mm.The bottom bend radius R of V-type stiffening rib 3 is 5 times of V-type stiffening rib 3 thickness t.
In order to make steel bridge deck have necessary strength and stiffness, the secondary stress that the outer distortion of reduction face causes, guarantee its fatigue durability and reasonable economy, consider simultaneously the convenience of assembling and welding, by investigation, finite element analysis and ratio choosing, model testing demonstration, determined sectional dimension, rigidity and the spacing of above-mentioned V-type stiffening rib 3.The present invention choose above-mentioned V-type stiffening rib 3 spacings, highly, A/F and thickness equidimension, bridge deck part and integral rigidity have been guaranteed, static(al) and the fatigue strength of bridge deck, stiffening rib, diaphragm and three's connecting portion have been improved, V-type stiffening rib 3 spacings also take into full account the requirement in welding space, and V-type stiffening rib 3 is then suitably thickeied the characteristics with the heavy duty of better adaptation bridge floor.For avoiding the clod wash plastic strain on the excessive impact of toughness, the bottom bend radius R of V-type stiffening rib 3 is defined as 5 times of V-type stiffening rib 3 thickness t.Finite element analysis and model investigation have also fully been proved the receive strength rationality, fatigue durability of sectional dimension, rigidity and the spacing of the above-mentioned V-type stiffening rib 3 that the present invention chooses and reasonable economy.
Following table 1 has been listed orthotropic steel bridge deck and has been adopted the fatigue behaviour of V-type stiffening rib and inverted trapezoidal stiffening rib to contrast.
By as seen from Table 1, steel bridge deck 2 bottoms arrange V-type stiffening rib 3 and compare employing inverted trapezoidal stiffening rib 4, the former Fatigue Stress Amplitude is significantly less than the latter, and the former fatigue loading number of times and tired application life are all much larger than the latter, show that the former fatigue behaviour obviously is better than the latter.
The content that this manual is not described in detail belongs to the known prior art of this area professional and technical personnel.
Claims (9)
1. V rib orthotropic steel bridge deck structure of putting more energy into, comprise mainly by middle mediastinum plate (1.1), the case beam (1) that limit midfeather (1.2) and diaphragm (1.3) consist of, be arranged on the steel bridge deck (2) at case beam (1) top, it is characterized in that: heavy duty district (A) bottom even of described steel bridge deck (2) arranges many V-type stiffening ribs (3), steel bridge deck (2) bottom even of (A) both sides, heavy duty district arranges many inverted trapezoidal stiffening ribs (4), offer the first via hole (5) a plurality of and V-type stiffening rib (3) coupling on the described diaphragm (1.3), also offer the second via hole (6) a plurality of and inverted trapezoidal stiffening rib (4) coupling on the described diaphragm (1.3), described V-type stiffening rib (3) is fixedly connected with diaphragm (1.3) by the first via hole (5), and described inverted trapezoidal stiffening rib (4) is fixedly connected with diaphragm (1.3) by the second via hole (6).
2. the V rib according to claim 1 orthotropic steel bridge deck structure of putting more energy into, it is characterized in that: the heavy duty district (A) of described steel bridge deck (2) is the carriageway plate scope of the railway ballast groove scope of railroad bridge or city rail bridge or the lorry runway scope of highway bridge.
3. the V rib according to claim 1 and 2 orthotropic steel bridge deck structure of putting more energy into, it is characterized in that: the spacing of described adjacent two V-type stiffening ribs (3) is 550 ~ 650mm.
4. the V rib according to claim 3 orthotropic steel bridge deck structure of putting more energy into, it is characterized in that: the height of described V-type stiffening rib (3) is 300 ~ 320mm.
5. the V rib according to claim 4 orthotropic steel bridge deck structure of putting more energy into, it is characterized in that: the A/F of described V-type stiffening rib (3) is 280 ~ 320mm.
6. the V rib according to claim 5 orthotropic steel bridge deck structure of putting more energy into, it is characterized in that: the bottom bend radius of described V-type stiffening rib (3) is 45 ~ 55mm.
7. the V rib according to claim 1 and 2 orthotropic steel bridge deck structure of putting more energy into, it is characterized in that: the thickness of described V-type stiffening rib (3) is 9 ~ 11mm.
8. the V rib according to claim 1 and 2 orthotropic steel bridge deck structure of putting more energy into, it is characterized in that: the spacing of described adjacent two inverted trapezoidal stiffening ribs (4) is 550 ~ 650mm.
9. the V rib according to claim 1 and 2 orthotropic steel bridge deck structure of putting more energy into, it is characterized in that: the bottom bend radius of described V-type stiffening rib (3) is 5 times of V-type stiffening rib (3) thickness.
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| CN2012103801322A CN102852091A (en) | 2012-10-09 | 2012-10-09 | Orthotropic steel bridge deck structure with V-shaped stiffening ribs |
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| CN2012103801322A CN102852091A (en) | 2012-10-09 | 2012-10-09 | Orthotropic steel bridge deck structure with V-shaped stiffening ribs |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108018772A (en) * | 2017-12-19 | 2018-05-11 | 中铁二院工程集团有限责任公司 | Non-major P.E.subject flat bed main beam section constructs |
Citations (6)
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|---|---|---|---|---|
| GB831018A (en) * | 1956-09-10 | 1960-03-23 | Fur Unternehmungen Der Eisen U | Metal structural floor particularly for bridges |
| CN101550676A (en) * | 2009-04-29 | 2009-10-07 | 中铁大桥勘测设计院有限公司 | High-speed railway orthotropic slab integral steel deck construction |
| US20100170050A1 (en) * | 2007-06-13 | 2010-07-08 | Kotaro Inose | Welded Joint, Steel Deck, and Process for Producing The Steel Deck |
| CN102505628A (en) * | 2011-11-23 | 2012-06-20 | 广东省公路勘察规划设计院股份有限公司 | Closed U-shaped stiffening rib for preventing fatigue cracks of steal bridge and construction method of closed U-shaped stiffening rib |
| CN202401394U (en) * | 2011-12-26 | 2012-08-29 | 中铁二院工程集团有限责任公司 | Crossbeam structure of railway steel-girder cable-stayed bridge decking |
| CN202830762U (en) * | 2012-10-09 | 2013-03-27 | 中铁第四勘察设计院集团有限公司 | Orthotropic steel bridge deck structure with V-shaped rib stiffened |
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2012
- 2012-10-09 CN CN2012103801322A patent/CN102852091A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB831018A (en) * | 1956-09-10 | 1960-03-23 | Fur Unternehmungen Der Eisen U | Metal structural floor particularly for bridges |
| US20100170050A1 (en) * | 2007-06-13 | 2010-07-08 | Kotaro Inose | Welded Joint, Steel Deck, and Process for Producing The Steel Deck |
| CN101550676A (en) * | 2009-04-29 | 2009-10-07 | 中铁大桥勘测设计院有限公司 | High-speed railway orthotropic slab integral steel deck construction |
| CN102505628A (en) * | 2011-11-23 | 2012-06-20 | 广东省公路勘察规划设计院股份有限公司 | Closed U-shaped stiffening rib for preventing fatigue cracks of steal bridge and construction method of closed U-shaped stiffening rib |
| CN202401394U (en) * | 2011-12-26 | 2012-08-29 | 中铁二院工程集团有限责任公司 | Crossbeam structure of railway steel-girder cable-stayed bridge decking |
| CN202830762U (en) * | 2012-10-09 | 2013-03-27 | 中铁第四勘察设计院集团有限公司 | Orthotropic steel bridge deck structure with V-shaped rib stiffened |
Non-Patent Citations (2)
| Title |
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| 王春生等: "正交异性钢桥面板的疲劳研究综述", 《钢结构》 * |
| 聂利芳: "铁路钢箱梁疲劳应力分析", 《铁道勘测与设计》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108018772A (en) * | 2017-12-19 | 2018-05-11 | 中铁二院工程集团有限责任公司 | Non-major P.E.subject flat bed main beam section constructs |
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Application publication date: 20130102 |