CN206346114U - The orthotropic steel bridge deck of rib built in a kind of band is remained silent stiffening rib structure - Google Patents
The orthotropic steel bridge deck of rib built in a kind of band is remained silent stiffening rib structure Download PDFInfo
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- CN206346114U CN206346114U CN201621393147.2U CN201621393147U CN206346114U CN 206346114 U CN206346114 U CN 206346114U CN 201621393147 U CN201621393147 U CN 201621393147U CN 206346114 U CN206346114 U CN 206346114U
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- rib
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- ribbed stiffener
- remaining silent
- diaphragm plate
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Abstract
The utility model is related to technical field of bridge engineering, more particularly to the orthotropic steel bridge deck of rib built in a kind of band is remained silent stiffening rib structure.Including floorings, the diaphragm plate for being fixed on floorings bottom, median ventral plate and multiple ribbed stiffeners of remaining silent, diaphragm plate is mutually perpendicular to median ventral plate, multiple ribbed stiffeners of remaining silent are uniformly arranged on diaphragm plate and positioned at median ventral plate both sides, the two side of each ribbed stiffener of remaining silent is fixedly connected with diaphragm plate, the connecting portion of both sides correspondence diaphragm plate inside ribbed stiffener of remaining silent is provided with rib, rib plate face with diaphragm plate is coplanar sets.In ribbed stiffener of remaining silent ribbed stiffener inner chamber of remaining silent corresponding with diaphragm plate connecting portion, small rib is set, so that diaphragm plate provides effective elastic bearing to ribbed stiffener of remaining silent, so as to improve deformation and stress of the ribbed stiffener of remaining silent with diaphragm plate connecting portion force sensitive region, overcome orthotropic steel bridge deck to remain silent the fatigue crack problem of ribbed stiffener and diaphragm plate intersection location, improve the fatigue behaviour of orthotropic steel bridge deck.
Description
Technical field
The utility model is related to technical field of bridge engineering, more particularly to rib built in a kind of band orthotropic steel bridge deck
Remain silent stiffening rib structure.
Background technology
Orthotropic steel bridge deck is by relatively thin steel facing, thinner steel longitudinal stiffener and relatively thin steel diaphragm plate (beam)
Composition, three is vertical each other, and it is integrally welded bear bridge floor load jointly, because the rigidity in mutually perpendicular direction is each not
It is identical, anisotropy is presented in stress behavior.The longitudinal stiffener of steel bridge deck is closed by whether ribbed stiffener section closes to be divided into
Mouth ribbed stiffener and Research on Open Stiffener.
The fatigue problem of Orthotropic Steel Bridge Deck is always the structure problem received much concern, directly affects and controls to tie
Structure local actual life.Due to each not phase of orthotropic steel bridge deck panel, longitudinal stiffener and diaphragm plate (beam) rigidity
Same, stress behavior is different, and fatigue problem easily occurs in weak link wherein, and weld seam is numerous in addition, under square one, phase
For mother metal, the fatigue resistance of weld seam is relatively low, when the sheet material of two kinds of different-stiffness is by being welded and fused
When, due to the reinforcement of weld seam, easily there is fatigue crack on the less sheet material of weld seam side rigidity；So in orthotropic steel
In deck structrue, many solder design positions and environs are all tired sensitive parts, easily occur fatigue cracking；As indulged
Longitudinally connected position of the connecting portion of rib and top plate, the connecting portion of longitudinal rib and diaphragm plate (beam) and ribbed stiffener etc.；Except weldering
Fatigue cracking, such as diaphragm plate (beam) web holes can also occur for the connecting portion of seam, the stress raiser caused by construction
Edge etc..Meanwhile, early onset, multiple, repeatability state is presented in fatigue crack, and then has a strong impact on the tired resistance to of steel bridge
Long property, greatly shortens the service life of bridge.
How to avoid the generation of fatigue crack and ensure Orthotropic Steel Bridge Deck durability, one always is for a long time
The individual technical problem paid close attention to and study hotspot, the reasonability of its Technological Economy are even more the problem that annoying design,
Numerous designers are allowed often to be faced with a kind of awkward selection, such as：In the main bridge of cable-stayed bridge of railway terminal river in Zhejiang Province, Ningbo river grand bridge
In (main span 468m) design process, the form of fracture for ribbed stiffener of longitudinally being remained silent for the generation and reasonable selection that avoid fatigue crack,
Model test was once carried out for Orthotropic Steel Bridge Deck, was drawn by the fatigue test, remain silent U in the former longitudinal direction for intending using
Shape ribbed stiffener is near diaphragm plate connecting portion, having fatigue crack, corresponding tired service life is only on U-shaped ribbed stiffener
25~49 years.The appearance of the fatigue crack, is (beam) out-of-plane bending that longitudinal ribbed stiffener of remaining silent bears to occur after unsymmetrical loading
Caused by (bending stress that rotation is produced relative to diaphragm plate) and in-plane deformation, its producing cause is due to the local location U-shaped
Not enough, Fatigue Stress Amplitude is excessive caused for stiffening rib structure rigidity.To solve this problem, Ningbo railway terminal river in Zhejiang Province river grand bridge
Main bridge takes the U for using all ribbed stiffeners of remaining silent below railway ballast scope by original after by model test
Shape ribbed stiffener is changed to increase the technical measures scheme of thickening type V rib ribbed stiffeners, to avoid longitudinal ribbed stiffener of remaining silent from connecting with diaphragm plate
There is fatigue crack in socket part position.Relative difficulty, processing welding precision requirement height are welded in processing due to increasing thickening type V ribs, and
It is more than conventional U ribs consumptive material using thickening type V ribs consumptive material is increased, cause the reasonability of its Technological Economy not very good.
Thus for the steel bridge or even every other similar steel construction using Orthotropic Steel Bridge Deck, how rationally to set
The structure detail of ribbed stiffener and diaphragm plate (beam) connecting portion is counted, to overcome fatigue crack problem herein, improves orthotropic
The fatigue behaviour of Steel Bridge Deck, improves the overall fatigue resistance and rationality of technique and economy of steel construction, it is ensured that Steel Structural Design is used
In the life-span, this is one of urgently research and the key technology solved.
Utility model content
The purpose of this utility model is to provide a kind of band simple in construction, fatigue behaviour that is improving orthotropic steel bridge deck
The orthotropic steel bridge deck of built-in rib is remained silent stiffening rib structure.
The technical solution of the utility model is：The orthotropic steel bridge deck of rib built in a kind of band is remained silent stiffening rib structure,
Including floorings, the diaphragm plate for being fixed on floorings bottom, median ventral plate and multiple ribbed stiffeners of remaining silent, the diaphragm plate and median ventral plate
It is mutually perpendicular to, multiple ribbed stiffeners of remaining silent are uniformly arranged on the diaphragm plate and positioned at median ventral plate both sides, each described to close
The two side of mouth ribbed stiffener is fixedly connected with the diaphragm plate, the connection of both sides correspondence diaphragm plate inside the ribbed stiffener of remaining silent
Position is provided with rib, and the rib plate face be arranged in parallel with the diaphragm plate.
Further, it is described remain silent ribbed stiffener including two increase it is trapezoidal remain silent ribbed stiffener and it is a plurality of it is common it is trapezoidal remain silent plus
Strength rib, increases trapezoidal ribbed stiffener of remaining silent and is arranged on the diaphragm plate at the Board position of midfield described in two, the conventional elevator
Shape ribbed stiffener of remaining silent is arranged at and described increases trapezoidal side of the ribbed stiffener away from median ventral plate of remaining silent.
Further, it is described increase it is trapezoidal remain silent ribbed stiffener highly be 330~350mm.
Further, the common trapezoidal ribbed stiffener of remaining silent highly is 270~290mm.
Further, the rib is platy structure, and the rib bottom is pasted with the ribbed stiffener of remaining silent by small leg
Pin is welded.
Further, the rib adds including being arranged at trapezoidal remain silent of increasing increased inside trapezoidal ribbed stiffener of remaining silent
Strength rib rib and the common trapezoidal ribbed stiffener rib of remaining silent being arranged inside the common trapezoidal ribbed stiffener of remaining silent, the rib are high
Spend ribbed stiffener height of being remained silent for its correspondence 0.5~0.6 times.
Further, ribbed stiffener short transverse of being remained silent described in the rib edge is set.
Further, the rib and the coplanar setting of the diaphragm plate.
Further, the thickness of the rib is 9~10mm.
Further, the spacing between the adjacent ribbed stiffener of remaining silent is 500~700mm.
The beneficial effects of the utility model are：Remaining silent, ribbed stiffener is put more energy into corresponding remain silent of diaphragm plate (beam) connecting portion
Rib inner chamber sets small rib so that diaphragm plate (beam), there is provided effective elastic bearing, is closed to ribbed stiffener of remaining silent so as to improve
The deformation in this force sensitive region of mouth ribbed stiffener Yu diaphragm plate (beam) connecting portion and stress, with conventional ribbed stiffener phase of remaining silent
Than diaphragm plate (beam) crosses the stress level of position while welding with ribbed stiffener of remaining silent and malformation is substantially reduced, and stress is reliable and closes
Reason is economical, and longitudinally the remain silent fatigue crack of ribbed stiffener and diaphragm plate (beam) intersection location of orthotropic steel bridge deck can be overcome to ask very well
Topic, improves the fatigue behaviour of orthotropic steel bridge deck, it is ensured that the service life of structure, and the reinforcing maintenance cost for reducing steel bridge is thrown
Enter, it is to avoid steel bridge fatigue failure in lifetime.
Brief description of the drawings
Fig. 1 be the orthotropic steel bridge deck of rib built in a kind of band of the utility model remain silent stiffening rib structure (median ventral plate its
Middle side) dimensional structure diagram；
Fig. 2 be the orthotropic steel bridge deck of rib built in a kind of band of the utility model remain silent stiffening rib structure (median ventral plate its
Middle side) another angle dimensional structure diagram；
Fig. 3 be the orthotropic steel bridge deck of rib built in a kind of band of the utility model remain silent stiffening rib structure (median ventral plate its
Middle side) front view；
Fig. 4 be the orthotropic steel bridge deck of rib built in a kind of band of the utility model remain silent stiffening rib structure (median ventral plate its
Middle side) top view；
In figure：1-diaphragm plate, 2-floorings, 3-median ventral plate, 4-common trapezoidal ribbed stiffener of remaining silent, 5-increase trapezoidal
Remain silent ribbed stiffener, 6-common trapezoidal ribbed stiffener rib of remaining silent, 7-increase trapezoidal ribbed stiffener rib of remaining silent.
Embodiment
In order that the purpose of this utility model, technical scheme and advantage are more clearly understood, below in conjunction with accompanying drawing and implementation
Example, the utility model is further elaborated.Specific embodiment described herein is only to explain that this practicality is new
Type, is not used to limit the utility model.In addition, involved by each embodiment of the utility model disclosed below
As long as technical characteristic does not constitute conflict and can be just mutually combined each other.
Below in conjunction with accompanying drawing and Longyan bridge (190+150) m steel box girder of cable stayed bridge specific embodiment to this patent
It is described in further detail.
The orthotropic steel bridge deck of rib built in a kind of band is remained silent stiffening rib structure as Figure 1-4, including floorings 2,
It is fixed on the diaphragm plate 1, median ventral plate 3 and multiple ribbed stiffeners of remaining silent of floorings bottom.Diaphragm plate 1 is mutually perpendicular to median ventral plate 2, many
Individual ribbed stiffener of remaining silent is uniformly arranged on diaphragm plate 1, and positioned at the both sides of median ventral plate 3, the two side of ribbed stiffener of each remaining silent with
Diaphragm plate 1 is fixedly connected.The connecting portion of both sides correspondence diaphragm plate 1 inside ribbed stiffener of remaining silent is provided with rib, and rib is tabular
Structure, its plate face and the coplanar setting of diaphragm plate 1, its longitudinal pitch is with the longitudinal pitch of diaphragm plate 1.Built-in rib and ribbed stiffener of remaining silent
Only connected by the constructivity of small leg (being preferably 4mm) corner welding line.
Ribbed stiffener of remaining silent increases trapezoidal remain silent ribbed stiffener 5 and a plurality of common trapezoidal ribbed stiffener 4 of remaining silent including two, increases ladder
Shape ribbed stiffener 5 of remaining silent is arranged on diaphragm plate 1 at the position of median ventral plate 3, and common trapezoidal ribbed stiffener 4 of remaining silent, which is arranged at, increases ladder
Shape is remained silent side of the ribbed stiffener 5 away from median ventral plate 3.It is highly 330~350mm to increase trapezoidal ribbed stiffener of remaining silent.In the present embodiment
It is 340mm to choose height h, and common trapezoidal ribbed stiffener of remaining silent highly is that selection height h is in 270~290mm, the present embodiment
280mm.Spacing between adjacent ribbed stiffener of remaining silent is that to choose spacing in 500~700mm, the present embodiment be 600mm.
Rib includes being arranged at increasing increases trapezoidal remain silent ribbed stiffener rib 7 and setting inside trapezoidal ribbed stiffener 5 of remaining silent
Common trapezoidal ribbed stiffener rib 6 of remaining silent inside common trapezoidal ribbed stiffener 4 of remaining silent, rib heights (h) are remained silent for its correspondence to be added
0.5~0.6 times of strength rib height.Therefore increase the trapezoidal height of ribbed stiffener rib 7 of remaining silent in the present embodiment for 200mm, it is common trapezoidal
The height of ribbed stiffener rib 6 of remaining silent is 160mm.And for the main bridge steel box-girder of Longyan bridge (190+150) m cable-stayed bridges, the rib is thick
Degree uses 8mm.
In order that steel bridge deck has necessary strength and rigidity, the less ribbed stiffener out-of-plane deformation institute of remaining silent of reduction thickness
Caused itself and connecting portion bending stress and stress concentration, it is ensured that its fatigue durability and reasonable economy, consider simultaneously
Assembling and the convenience of welding, by investigating and than selecting, it is determined that above-mentioned sectional dimension and spacing containing ribbed stiffener of remaining silent.Simultaneously
In order to improve fatigue behaviour, median ventral plate both sides twice are longitudinally remained silent the appropriate heightening design of ribbed stiffener.
Tables 1 and 2 lists the built-in rib orthotropic steel bridge deck of band and remained silent stiffening rib structure and without built-in rib ladder
Rib put more energy into orthotropic steel bridge deck remain silent stiffening rib structure second and third system stress contrast.
Remain silent ribbed stiffener of the table 1 with built-in rib should with part of the ribbed stiffener based on finite element of remaining silent without built-in rib
Power analyzes (ribbed stiffener top of remaining silent is without wheel load)
Remain silent ribbed stiffener of the table 2 with built-in rib should with part of the ribbed stiffener based on finite element of remaining silent without built-in rib
Power analyzes (there is wheel load on ribbed stiffener top of remaining silent)
From Tables 1 and 2, ribbed stiffener is remained silent compared with ribbed stiffener of being remained silent without built-in rib with built-in rib,
The former Von Mises equivalent stress is significantly less than the latter, and stress decreases by 16%~42%, especially proximate to median ventral plate side
Stress point a and stress point c, stress level reduces by 8~10MPa.
The essential reason that fatigue cracking occurs in steel construction is that the fatigue resulted in fatigue cracking position stress excessively collects should
Power is excessive, and then local plastic deformation occurs, and under stress repetition ringing, above-mentioned position is in moulding area or defective part
Position is gradually cracked and constantly extension extension, and stress amplitude is bigger, and crack just extends faster.As seen from the above, steel is determined
The principal element of structural fatigue is exactly the stress for rationally controlling each position, to second and third system of Orthotropic Steel Bridge Deck and
Speech, the ribbed stiffener of remaining silent of the built-in rib of band compares the ribbed stiffener of remaining silent without built-in rib, and the stress level of stress concentration point will
Small by 16%~42%, it can thus be appreciated that the former fatigue behaviour is much better than the latter, built-in rib is to ribbed stiffener Out-of Plane Stiffness of remaining silent
Increase can be effectively prevented from the generation of fatigue crack.
It is described above, embodiment only of the present utility model, it is noted that any to be familiar with those skilled in the art
Member is in the technical scope disclosed by the utility model, and the change or replacement that can be readily occurred in should all be covered in the utility model
Protection domain within.
Claims (10)
- The stiffening rib structure 1. orthotropic steel bridge deck of rib built in a kind of band is remained silent, including floorings (2), it is fixed on floorings (2) diaphragm plate (1) of bottom, median ventral plate (3) and multiple ribbed stiffeners of remaining silent, the diaphragm plate (1) are mutually hung down with median ventral plate (3) Directly, multiple ribbed stiffeners of remaining silent are uniformly arranged on the diaphragm plate (1) and positioned at median ventral plate (3) both sides, each described to close The two side of mouth ribbed stiffener is fixedly connected with the diaphragm plate (1), it is characterised in that：It is described remain silent inside ribbed stiffener both sides with Diaphragm plate (1) connecting portion corresponding position is provided with rib, and the rib plate face be arranged in parallel with the diaphragm plate (1).
- The stiffening rib structure 2. orthotropic steel bridge deck of the built-in rib of band as claimed in claim 1 is remained silent, it is characterised in that：Institute State ribbed stiffener of remaining silent and increase trapezoidal ribbed stiffener of remaining silent (5) and a plurality of common trapezoidal ribbed stiffener of remaining silent (4) including two, described in two Increase trapezoidal ribbed stiffener of remaining silent (5) to be arranged on the diaphragm plate (1) at median ventral plate (3) position, it is described common trapezoidal to close Mouth ribbed stiffener (4) is arranged at the side for increasing the remote median ventral plate of trapezoidal ribbed stiffener of remaining silent (5).
- The stiffening rib structure 3. orthotropic steel bridge deck of the built-in rib of band as claimed in claim 2 is remained silent, it is characterised in that：Institute State increase trapezoidal ribbed stiffener of remaining silent (5) highly be 330~350mm.
- The stiffening rib structure 4. orthotropic steel bridge deck of the built-in rib of band as claimed in claim 2 is remained silent, it is characterised in that：Institute It is highly 270~290mm to state common trapezoidal ribbed stiffener of remaining silent (4).
- The stiffening rib structure 5. orthotropic steel bridge deck of the built-in rib of band as claimed in claim 1 is remained silent, it is characterised in that：Institute Rib is stated for platy structure, the rib bottom is pasted pin by small leg with the ribbed stiffener of remaining silent and welded.
- The stiffening rib structure 6. orthotropic steel bridge deck of the built-in rib of band as claimed in claim 2 is remained silent, it is characterised in that：Institute State rib and include being arranged at and described increase trapezoidal ribbed stiffener of remaining silent (5) internal trapezoidal remain silent of increasing and ribbed stiffener rib (7) and set The internal common trapezoidal ribbed stiffener rib (6) of remaining silent of the common trapezoidal ribbed stiffener of remaining silent (4) is placed in, the rib heights are it 0.5~0.6 times of corresponding ribbed stiffener height of remaining silent.
- The stiffening rib structure 7. orthotropic steel bridge deck of the built-in rib of band as claimed in claim 1 is remained silent, it is characterised in that：Institute The thickness for stating rib is 9~10mm.
- The stiffening rib structure 8. orthotropic steel bridge deck of the built-in rib of band as claimed in claim 1 is remained silent, it is characterised in that：Institute State ribbed stiffener short transverse setting of being remained silent described in rib edge.
- The stiffening rib structure 9. orthotropic steel bridge deck of the built-in rib of band as claimed in claim 1 is remained silent, it is characterised in that：Institute State rib and the coplanar setting of the diaphragm plate (1).
- The stiffening rib structure 10. orthotropic steel bridge deck of the built-in rib of band as claimed in claim 1 or 2 is remained silent, its feature exists In：Spacing between the adjacent ribbed stiffener of remaining silent is 500~700mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621393147.2U CN206346114U (en) | 2016-12-19 | 2016-12-19 | The orthotropic steel bridge deck of rib built in a kind of band is remained silent stiffening rib structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621393147.2U CN206346114U (en) | 2016-12-19 | 2016-12-19 | The orthotropic steel bridge deck of rib built in a kind of band is remained silent stiffening rib structure |
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| CN206346114U true CN206346114U (en) | 2017-07-21 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106522093A (en) * | 2016-12-19 | 2017-03-22 | 中铁第四勘察设计院集团有限公司 | Orthotropic steel bridge deck closed stiffening rib structure with built-in rib strips |
| CN113832872A (en) * | 2021-10-18 | 2021-12-24 | 中铁四局集团有限公司 | Releasing method of orthotropic steel bridge deck local-pressure area temporary stiffening plate |
-
2016
- 2016-12-19 CN CN201621393147.2U patent/CN206346114U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106522093A (en) * | 2016-12-19 | 2017-03-22 | 中铁第四勘察设计院集团有限公司 | Orthotropic steel bridge deck closed stiffening rib structure with built-in rib strips |
| CN113832872A (en) * | 2021-10-18 | 2021-12-24 | 中铁四局集团有限公司 | Releasing method of orthotropic steel bridge deck local-pressure area temporary stiffening plate |
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