CN203821242U - Anti-fatigue support device for top plate and U rib welded joint of steel bridge deck - Google Patents
Anti-fatigue support device for top plate and U rib welded joint of steel bridge deck Download PDFInfo
- Publication number
- CN203821242U CN203821242U CN201420199361.9U CN201420199361U CN203821242U CN 203821242 U CN203821242 U CN 203821242U CN 201420199361 U CN201420199361 U CN 201420199361U CN 203821242 U CN203821242 U CN 203821242U
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- China
- Prior art keywords
- top board
- rib
- fixed
- bridge deck
- elastic
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired - Lifetime
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 29
- 239000010959 steel Substances 0.000 title claims abstract description 29
- 230000002929 anti-fatigue Effects 0.000 title abstract 3
- 230000003287 optical effect Effects 0.000 claims description 27
- 238000003466 welding Methods 0.000 claims description 20
- 230000007704 transition Effects 0.000 claims description 3
- 230000002265 prevention Effects 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 3
- 238000005452 bending Methods 0.000 abstract description 2
- 208000037656 Respiratory Sounds Diseases 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000003449 preventive effect Effects 0.000 description 2
- 206010011376 Crepitations Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
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- Bridges Or Land Bridges (AREA)
Abstract
The utility model provides an anti-fatigue support device for a top plate and a U rib welded joint of a steel bridge deck, which comprises a top plate, a U rib web plate and an elastic support piece, wherein the bottom end of each of the U rib web plate and the elastic support piece is fixed on the top plate; the top end of the elastic support piece is fixed on the U rib web plate; the support device, the U rib web plate and the top plate are arranged triangularly. The anti-fatigue support device not only can increase the rigidity of the top plate and the U rib joint and prevent the top plate and the U rib at the joint from bending and deforming, but also can apply pre-stress to the joint and improve the overall stress of the top plate and the U rib welded joint, thereby playing a significant prevention effect on various cracks at the top plate and the U rib joint.
Description
Technical field
The utility model relates to a kind of bracing or strutting arrangement that prevents steel bridge deck fatigue damage, the anti-tired bracing or strutting arrangement of especially a kind of steel bridge deck top board and U rib welding point.
Background technology
Steel bridge deck is because the reasons such as complex structure, welding capacity greatly, directly bear wheel load, and Stress influence line is shorter are easily at structure detail place and remaining years fatigue crack.One of top board and U rib welding point are typical tired details, and this place easily produces three kinds of fatigue cracks, i.e. top board toe crack, top board root crack and U rib toe crack.At present, for the research of steel bridge deck fatigue crack preventive action and application seldom, generally can to toe of weld, process by means such as on-the-spot manual polishing and ultrasonic impacts, reduce the stress concentration degree of toe of weld, or near toe of weld introducing residual compressive stress, improve the fatigue strength of welding point, reduce the generation of fatigue crack.But the implementation result of these methods is subject to operating influence larger, the integral body that can not improve welding point is stressed, and can only play certain prevention effect to top board welding toe crackle.
Utility model content
The utility model is for the deficiencies in the prior art, provide a kind of steel bridge deck top board and U rib welding point anti-tired bracing or strutting arrangement, not only can increase the rigidity of top board and U rib fitting, limiting joint place top board and the flexural deformation of U rib, but also can apply compressive pre-stress to joint, the integral body of improving top board and U rib welding point is stressed, to all types of crackles at top board and U rib fitting place, can play significant prevention effect.
In order to solve the problems of the technologies described above, the technical scheme that the utility model provides is:
The anti-tired bracing or strutting arrangement of a kind of steel bridge deck top board and U rib welding point, comprise top board, U rib web and elastic supporting member for supporting optical member, the bottom of described U rib web is fixed on top board, the bottom of described elastic supporting member for supporting optical member is fixed on top board, the top of elastic supporting member for supporting optical member is fixed on U rib web, and elastic supporting member for supporting optical member, U rib web and top board are triangle setting;
Elastic supporting member for supporting optical member comprises support body, and this support body comprises and be separately positioned on the connecting portion at two ends and be connected to two variant parts between connecting portion, and between variant part and each connecting portion, arc transition is connected; The described connecting portion that is arranged on two ends is fixed with U rib web, top board respectively;
Described elastic supporting member for supporting optical member comprises the first elastic support sheet, the second elastic support sheet and the 3rd elastic support sheet, and the first elastic support sheet, the second elastic support sheet and the 3rd elastic support sheet are superimposed successively;
Described connecting portion is fixed with U rib web, top board respectively by fastening devices, and described fastening devices comprises steel plate base and screw rod, and described screw rod is fixed on steel plate base;
On described steel plate base, be provided with two row's bolts hole, in described bolt hole, be fixed with screw rod;
The two ends of described elastic supporting member for supporting optical member are connected with the screw rod of fastening devices respectively;
The bottom of described U rib web is weldingly fixed on top board.
By above technical scheme, with respect to prior art, the utlity model has following beneficial effect:
Under vehicle-mounted load, can there are three kinds of deformations in the welding point place of top board and U rib, when joint lateral roof is bent downwardly, top board toe of weld produces tensile stress, easily causes top board toe crack, when inside joint, top board is bent downwardly, top board root of weld produces tensile stress, easily causes top board root crack, when joint U rib web is outwardly-bent, U rib toe of weld produces tensile stress, easily causes U rib toe crack.The application's support bar is owing to self having larger rigidity, after installation because two ends are connected with U rib respectively, and at an angle with top board and U rib web, can effectively limit the flexural deformation of top board and U rib web and the rotational deformation of top board and U rib web member, the integral body of directly improving joint is stressed, reduces joint stress amplitude;
Support bar when mounted can be by changing the position tension support bar of screw rod on bearing, to support bar, apply prestressing force, after applying prestressing force, can cause that the micro-corner of joint top board and U rib web is out of shape, at welding toe, produce compressive pre-stress, thereby more effectively prevent the generation of joint toe crack.
Accompanying drawing explanation
Figure 1 shows that overall structure figure of the present utility model;
Figure 2 shows that fixed bearing structure chart of the present utility model;
Figure 3 shows that the top view of fixed bearing of the present utility model;
Figure 4 shows that elastic supporting bar structure chart of the present utility model;
Wherein: 1 is U rib web, and 2 is top board, and 3 is elastic supporting member for supporting optical member, and 4 is steel plate base, and 5 is screw rod, and 6 is bolt hole, and 7 is the first elastic support sheet, and 8 is the second elastic support sheet, and 9 is the 3rd elastic support sheet.
The specific embodiment
Accompanying drawing discloses the structural representation of the related preferred embodiment of the utility model without limitation; Below with reference to accompanying drawing, explain the technical solution of the utility model.
Shown in Fig. 1-Fig. 4, the utility model comprises top board 2, U rib web 1 and elastic supporting member for supporting optical member 3, the bottom of described U rib web 1 is fixed on top board 2, the bottom of described elastic supporting member for supporting optical member 3 is fixed on top board 2, the top of elastic supporting member for supporting optical member 3 is fixed on U rib web 1, and elastic supporting member for supporting optical member, U rib web 1 and top board 2 are triangle setting;
Elastic supporting member for supporting optical member 3 comprises support body, and this support body comprises and be separately positioned on the connecting portion at two ends and be connected to two variant parts between connecting portion, and between variant part and each connecting portion, arc transition is connected; The described connecting portion that is arranged on two ends is fixed with U rib web 1, top board 2 respectively;
Described connecting portion is fixed with U rib web 1, top board 2 respectively by fastening devices, and described fastening devices comprises steel plate base 4 and screw rod 5, and described screw rod 5 is fixed on steel plate base 4;
；
On steel plate base 4, be provided with two row's bolts hole 6, screw rod 5 is tightened fixing by bolt hole 6 and steel plate base 4, and the position of screw rod 5 can arbitrarily regulate by the position of two row's bolts hole 6;
The two ends of described elastic supporting member for supporting optical member 3 are connected with the screw rod 5 of two connecting portions respectively;
The bottom of described U rib web 1 is weldingly fixed on top board 2.
Elastic supporting member for supporting optical member 3 is processed by steel bending, comprise and be separately positioned on the connecting portion at two ends and be connected to two variant parts between connecting portion, and have certain rigidity and dimensions, connecting portion and steel plate base 4 are tangent, this kind avoids causing that junction stress is concentrated.
Elastic supporting member for supporting optical member 3 comprises the first elastic support sheet 7, the second elastic support sheet 8 and the 3rd elastic support sheet 9, and the first elastic support sheet 7, the second elastic support sheet 8 and the 3rd elastic support sheet 9 are superimposed successively.
When elastic supporting member for supporting optical member 3 is installed, position by adjusting screw(rod) 5 makes elastic supporting member for supporting optical member 3 strain to centre, the interior generation prestressing force of elastic supporting member for supporting optical member 3 makes top board 2 and U rib web 1 produce minor rotation distortion adjacent to each other, at welding toe, produce compressive pre-stress, the generation of more effective prevention toe of weld fatigue crack.Elastic supporting member for supporting optical member 3 is replaceable member, as long as it is replaceable to turn on bolt; Used in this application is that the first elastic support sheet 7, the second elastic support sheet 8 and the 3rd elastic support sheet 9 operate, top board 2 and U rib fitting for diverse location, its actual loading there are differences, can be according to actual Stress Measurement result, suitably the quantity of increase and decrease elastic support sheet is adjusted its rigidity, to reach desirable preventive effect.
Claims (7)
1. a steel bridge deck top board and the anti-tired bracing or strutting arrangement of U rib welding point, comprise top board, U rib web and elastic supporting member for supporting optical member, it is characterized in that: the bottom of described U rib web is fixed on top board, the bottom of described elastic supporting member for supporting optical member is fixed on top board, the top of elastic supporting member for supporting optical member is fixed on U rib web, and elastic supporting member for supporting optical member, U rib web and top board are triangle setting.
2. the anti-tired bracing or strutting arrangement of steel bridge deck top board according to claim 1 and U rib welding point, it is characterized in that: elastic supporting member for supporting optical member comprises support body, this support body comprises and is separately positioned on the connecting portion at two ends and is connected to two variant parts between connecting portion, and between variant part and each connecting portion, arc transition is connected; The described connecting portion that is arranged on variant part two ends is fixed with U rib web, top board respectively.
3. the anti-tired bracing or strutting arrangement of steel bridge deck top board according to claim 2 and U rib welding point, it is characterized in that: described elastic supporting member for supporting optical member comprises the first elastic support sheet, the second elastic support sheet and the 3rd elastic support sheet, and the first elastic support sheet, the second elastic support sheet and the 3rd elastic support sheet are superimposed successively.
4. the anti-tired bracing or strutting arrangement of steel bridge deck top board according to claim 3 and U rib welding point, it is characterized in that: described connecting portion is fixed with U rib web, top board respectively by fastening devices, described fastening devices comprises steel plate base and screw rod, and described screw rod is fixed on steel plate base.
5. the anti-tired bracing or strutting arrangement of steel bridge deck top board according to claim 4 and U rib welding point, is characterized in that: on described steel plate base, be provided with two row's bolts hole, in described bolt hole, be fixed with screw rod.
6. the anti-tired bracing or strutting arrangement of steel bridge deck top board according to claim 5 and U rib welding point, is characterized in that: the two ends of described elastic supporting member for supporting optical member are connected with the screw rod of fastening devices respectively.
7. the anti-tired bracing or strutting arrangement of steel bridge deck top board according to claim 1 and U rib welding point, is characterized in that: the bottom of described U rib web is weldingly fixed on top board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420199361.9U CN203821242U (en) | 2014-04-23 | 2014-04-23 | Anti-fatigue support device for top plate and U rib welded joint of steel bridge deck |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420199361.9U CN203821242U (en) | 2014-04-23 | 2014-04-23 | Anti-fatigue support device for top plate and U rib welded joint of steel bridge deck |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203821242U true CN203821242U (en) | 2014-09-10 |
Family
ID=51476759
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420199361.9U Expired - Lifetime CN203821242U (en) | 2014-04-23 | 2014-04-23 | Anti-fatigue support device for top plate and U rib welded joint of steel bridge deck |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203821242U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106223211A (en) * | 2016-07-22 | 2016-12-14 | 东南大学 | A kind of adjustable-angle precompressed fatigue of steel structures strenthening member |
-
2014
- 2014-04-23 CN CN201420199361.9U patent/CN203821242U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106223211A (en) * | 2016-07-22 | 2016-12-14 | 东南大学 | A kind of adjustable-angle precompressed fatigue of steel structures strenthening member |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140910 |
|
| CX01 | Expiry of patent term |