CN211922244U - Damping steel box girder for large-span bridge - Google Patents
Damping steel box girder for large-span bridge Download PDFInfo
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- CN211922244U CN211922244U CN202020425029.5U CN202020425029U CN211922244U CN 211922244 U CN211922244 U CN 211922244U CN 202020425029 U CN202020425029 U CN 202020425029U CN 211922244 U CN211922244 U CN 211922244U
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Abstract
The utility model relates to a large-span bridge is with shock attenuation steel box girder belongs to bridge building technical field, including steel box girder and mounting panel, the mounting groove has been seted up to the bottom of steel box girder, the fixed installation piece that is provided with on the mounting panel, the steel box girder can be located on the installation piece through the mounting groove cover, the installation piece slides has the arc-shaped elastic piece, the convex surface of arc-shaped elastic piece and the cell wall butt of mounting groove, be provided with the locating part that is used for injecing arc-shaped elastic piece sliding position on the installation piece. The utility model discloses have the effect that reduces the vibrations of steel case roof beam to a certain extent.
Description
Technical Field
The utility model belongs to the technical field of the bridge building technique and specifically relates to a shock attenuation steel box girder for large-span bridge is related to.
Background
The steel box girder is a girder bridge type with large spanning capability, small building height and excellent overall performance, has short construction period and good technical benefit, is suitable for being applied to urban viaducts and sea-crossing bridges, and is provided with a pavement structure layer above the steel box girder, wherein the pavement structure layer is generally a concrete layer, an asphalt layer and the like.
Chinese patent No. CN207314117U discloses a construction steel box girder, which comprises a steel box girder body composed of a plurality of sealing plates, wherein the upper end surface of the steel box girder body is provided with a hook for assisting in lifting, an auxiliary extension beam is fixed on the oblique end surface of the steel box girder body, and the upper end surface of the auxiliary extension beam and the upper end surface of the steel box girder body are located at the same level; the auxiliary extension beam and the steel box beam body connecting end area are larger than the exposed ends of the auxiliary extension beam, the sealing plates are connected with the steel box beam body through the buckles in a matched mode, the two ends of the sealing plates at the bottom of the steel box beam body are exposed outside the steel box beam body, and the welding strength of the sealing plates at the bottom of the steel box beam body and the welding strength of the left sealing plates and the right sealing plates are enhanced.
The above prior art solutions have the following drawbacks: the steel box girder is rigidly connected with the bridge pier of the bridge, when typhoon, earthquake or vibration excited by the outside world occurs, the steel box girder is easy to vibrate, and the joint of the steel box girder and the bridge is easy to damage, so that the steel box girder falls off from the bridge pier.
SUMMERY OF THE UTILITY MODEL
Not enough to prior art exists, the utility model aims at providing a large-span is shock attenuation steel box girder for bridge has the advantage that reduces the vibrations of steel box girder to a certain extent.
The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme: the utility model provides a large-span bridge is with shock attenuation steel box girder, includes steel box girder and mounting panel, the mounting groove has been seted up to the bottom of steel box girder, the fixed installation piece that is provided with on the mounting panel, the steel box girder can be located on the installation piece through the mounting groove cover, the installation piece slides has the dome spring, the convex surface of dome spring and the cell wall butt of mounting groove, be provided with the locating part that is used for injecing dome spring sliding position on the installation piece.
By adopting the technical scheme, when the steel box girder is subjected to the external force perpendicular to the sliding direction of the arc-shaped elastic sheet, the gap between the mounting groove and the mounting block provides a buffer distance for the steel box girder on the mounting plate, and the steel box girder extrudes the arc-shaped elastic sheet. The arc-shaped elastic sheet is stressed and deformed and slides on the mounting block, the arc-shaped elastic sheet exerts an acting force in the opposite direction on the steel box girder, and a certain buffering effect is exerted on the steel box girder, so that the vibration of the steel box girder in the length direction of the arc-shaped elastic sheet is reduced to a certain extent.
The present invention may be further configured in a preferred embodiment as: the limiting parts are limiting blocks, the limiting blocks are arranged to be two and located on two sides of the arc-shaped elastic piece, limiting grooves are formed in the side walls, close to each other, of the limiting blocks along the length direction of the arc-shaped elastic piece, and two ends of the arc-shaped elastic piece are arranged in the two limiting grooves in a sliding mode respectively.
Through adopting above-mentioned technical scheme, the spacing groove on two stoppers provides the sliding distance for the arc shell fragment, and has restricted the sliding position of arc shell fragment.
The present invention may be further configured in a preferred embodiment as: a push plate is arranged in the limiting groove in a sliding mode, and a pressure spring used for driving the push plate to move towards the direction close to the arc-shaped elastic sheet is arranged in the limiting groove; one end of the pressure spring is abutted against the side wall of the limiting groove far away from the arc-shaped elastic sheet, and the other end of the pressure spring is abutted against the side wall of the push plate far away from the arc-shaped elastic sheet.
Through adopting above-mentioned technical scheme, when the shell fragment receives the extrusion of bottom plate to take place deformation, the shell fragment drives two push pedals and slides towards the direction of keeping away from each other, the compression spring compression, the elasticity that the compression spring compression produced promotes the push pedal and moves towards the direction that is close to each other to play certain effect of blockking to the deformation of shell fragment of arc, thereby make the shell fragment of arc have certain reaction force to the steel box roof beam, improved the buffering effect of shell fragment of arc to the steel box roof beam, thereby improved the shock attenuation effect.
The present invention may be further configured in a preferred embodiment as: the mounting panel perpendicular to arc shell fragment slip direction's both sides are provided with the fixed plate, the slide bar that is on a parallel with the arc shell fragment is worn to be equipped with in the horizontal slip on the fixed plate, be provided with on the slide bar and be used for ordering about the slide bar and support tight elastic component with the steel box roof beam.
Through adopting above-mentioned technical scheme, when the steel box girder received the external force of perpendicular to arc shell fragment slip direction, the elastic component was used for ordering about the slide bar and supported tightly with the steel box girder to make the slide bar exert certain effort to the steel box girder, thereby reduced the vibrations of steel box girder in the direction of perpendicular to arc shell fragment.
The present invention may be further configured in a preferred embodiment as: the elastic piece is a buffer spring, and a buffer block is fixedly arranged at one end of the sliding rod close to the bottom plate; one end of the buffer spring is abutted to the side wall of the buffer block far away from the bottom plate, and the other end of the buffer spring is abutted to the side wall of the fixed plate close to the bottom plate.
Through adopting above-mentioned technical scheme, buffer spring is in compression state all the time, and the elasticity that buffer spring compression produced makes the slide bar have towards the gliding trend of the direction that is close to the steel box roof beam, makes the slide bar exert certain effort to the steel box roof beam to reduce the vibrations of steel box roof beam in the direction of perpendicular to arc shell fragment, convenient operation.
The present invention may be further configured in a preferred embodiment as: the steel box girder comprises a bottom plate, two auxiliary plates, two cantilever brackets and a top plate, wherein the two auxiliary plates are vertically arranged on two sides of the bottom plate respectively, the two cantilever brackets are arranged on the tops of the two auxiliary plates respectively, the top plate is horizontally arranged on the two cantilever brackets, a damping spring is arranged between the bottom plate and the top plate, one end of the damping spring is abutted to the top wall of the bottom plate, and the other end of the damping spring is abutted to the bottom wall of the top plate.
Through adopting above-mentioned technical scheme, damping spring's setting has reduced the ascending vibrations of steel box girder in vertical direction.
The present invention may be further configured in a preferred embodiment as: a partition plate is arranged between the two auxiliary plates, and a through hole is formed in the partition plate.
Through adopting above-mentioned technical scheme, the setting of baffle is convenient for will place equipment and cable in the steel box girder.
The present invention may be further configured in a preferred embodiment as: the bottom of roof is fixed and is provided with the joint strip, set up on the cantilever frame and supply joint strip male joint groove.
Through adopting above-mentioned technical scheme, the cooperation in joint strip and joint groove is convenient for install the roof on the cantilever frame.
To sum up, the utility model discloses a following beneficial technological effect has:
1. the gap between the mounting groove and the mounting block provides a buffer distance for the steel box girder, the steel box girder extrudes the arc-shaped elastic sheet, the arc-shaped elastic sheet deforms under stress and exerts an acting force in the opposite direction on the steel box girder, so that the vibration of the steel box girder in the length direction of the arc-shaped elastic sheet is reduced to a certain extent;
2. the buffer spring is always in a compressed state, and the elastic force generated by the compression of the buffer spring enables the sliding rod to apply certain acting force on the steel box girder, so that the vibration of the steel box girder in the direction vertical to the arc-shaped elastic sheet is reduced;
3. the shock of the steel box girder in the vertical direction is reduced due to the arrangement of the damping springs.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention;
fig. 2 is an exploded schematic view of the present invention;
FIG. 3 is a cross-sectional view of a stop.
Reference numerals: 1. a steel box girder; 11. a base plate; 111. mounting grooves; 12. a sub-board; 13. a cantilever mount; 131. a clamping groove; 14. a top plate; 141. a clamping strip; 15. a partition plate; 151. perforating; 152. a rubber ring; 2. mounting a plate; 21. mounting blocks; 3. a damping spring; 31. a propping block; 4. an arc-shaped elastic sheet; 5. a limiting block; 51. a limiting groove; 52. pushing the plate; 53. a pressure spring; 6. a fixing plate; 61. a through hole; 7. a slide bar; 71. a buffer block; 72. a stopper; 73. a buffer spring.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Referring to fig. 1, do the utility model discloses a large-span bridge is with shock attenuation steel box girder, including steel box girder 1 and mounting panel 2. The steel box girder 1 comprises a bottom plate 11, two auxiliary plates 12, two cantilever brackets 13 and a top plate 14, wherein the bottom plate 11, the auxiliary plates 12 and the top plate 14 are all rectangular steel plates. The bottom plate 11 is horizontally arranged, and the two auxiliary plates 12 are respectively and fixedly arranged at two sides of the bottom plate 11 and are fixedly welded at the two sides. A plurality of clamping bars 141 are fixedly arranged at two ends of the bottom wall of the top plate 14, and the two cantilever brackets 13 are respectively fixedly arranged at the tops of the two sub-plates 12 and are perpendicular to the sub-plates 12. The top wall of cantilever frame 13 is seted up along vertical direction and is supplied joint strip 141 male joint groove 131, and joint strip 141 and joint groove 131 looks adaptation are convenient for place roof 14 on cantilever frame 13. The top plate 14 and the cantilever frame 13 are fixed through bolts, so that the top plate 14 and the cantilever frame 13 can be detached, and certain bridge equipment can be conveniently placed in the steel box girder 1.
Referring to fig. 1 and 2, a partition 15 perpendicular to the sub-plate 12 is vertically arranged between the two sub-plates 12, a through hole 151 is formed in a side wall of the partition 15, and a rubber ring 152 is embedded in the through hole 151. The through holes 151 are provided to facilitate the placement of cables within the steel box girder 1, and the rubber rings 152 are used to reduce the damage of the cables and the partition 15. Be provided with damping spring 3 between bottom plate 11 and the roof 14, damping spring 3's both ends are all fixed and are provided with and support tight piece 31, two support tight piece 31 respectively with the roof of bottom plate 11, the diapire butt of roof 14, damping spring 3 is used for reducing the ascending vibrations of steel box girder in vertical direction.
Referring to fig. 1, fixing plates 6 are vertically arranged on two sides of a mounting plate 2, and the fixing plates 6 are fixedly connected with the mounting plate 2 through bolts. Through holes 61 are formed in the side wall of the fixing plate 6 along the horizontal direction, sliding rods 7 penetrate through the through holes 61 in a sliding mode, and the axial direction of each sliding rod 7 is perpendicular to the side wall, close to the fixing plate 6, of the bottom plate 11. A buffer block 71 is fixedly arranged at one end of the sliding rod 7 close to the bottom plate 11, and a stopper 72 is fixedly arranged at one end of the sliding rod 7 far away from the buffer block 71. The stopper 72 and the buffer block 71 are round tables, the diameters of the stopper 72 and the buffer block 71 are larger than the diameter of the through hole 61, and the stopper 72 is used for effectively preventing the sliding rod 7 from sliding out of the through hole 61. The slide rod 7 is sleeved with a buffer spring 73 for driving the buffer block 71 to abut against the bottom plate 11, one end of the buffer spring 73 abuts against the side wall of the buffer block 71 far away from the bottom plate 11, and the other end of the buffer spring 73 abuts against the side wall of the fixed plate 6 near the bottom plate 11.
Referring to fig. 2 and 3, a mounting block 21 is fixedly disposed on the top wall of the mounting plate 2, and the mounting block 21 is a square block. Mounting groove 111 has been seted up along vertical direction to the diapire of bottom plate 11, and mounting groove 111 is square groove. The groove width of the mounting groove 111 is greater than the width of the mounting block 21 so that the mounting groove 111 can accommodate the entire mounting block 21. The installation piece 21 slides on the lateral wall of vice board 12 perpendicular to and is provided with arc shell fragment 4, and is provided with the stopper 5 that is used for injecing arc shell fragment 4 sliding position on the lateral wall that the installation piece 21 is on a parallel with vice board 12, and stopper 5 is square piece, and stopper 5 sets up to two. Two limiting blocks 5 are respectively arranged at two sides of the arc-shaped elastic sheet 4, and the limiting blocks 5 are fixed on the mounting block 21 through bolts. The two limiting blocks 5 are mutually close to the side wall, and limit grooves 51 are formed in the length direction of the arc-shaped elastic sheet 4, and the two ends of the arc-shaped elastic sheet 4 are respectively arranged in the two limit grooves 51 in a sliding mode.
Referring to fig. 3, a push plate 52 is slidably disposed in the limiting groove 51, and the push plate 52 abuts against one end of the arc-shaped elastic piece 4. A pressure spring 53 used for driving the push plate 52 to move towards the direction close to the arc-shaped elastic sheet 4 is arranged in the limiting groove 51, one end of the pressure spring 53 is abutted to the side wall of the limiting groove 51 far away from the arc-shaped elastic sheet 4, and the other end of the pressure spring is abutted to the side wall of the push plate 52 far away from the arc-shaped elastic sheet 4.
The implementation principle of the embodiment is as follows: when the mounting plate 2 is used, the mounting plate 2 is horizontally and fixedly mounted at the top of a bridge pier of a bridge, and the mounting block 21 of the mounting plate 2 faces upwards. And then, after the notch of the mounting groove 111 is aligned with the mounting block 21, the steel box girder 1 is moved downwards, the steel box girder 1 is sleeved on the mounting block 21, and the arc-shaped elastic sheet 4 can be tightly abutted against the side wall of the mounting groove 111, so that the mounting of the steel box girder 1 on the pier is completed.
When the steel box girder 1 receives the external force of the sliding direction of the arc-shaped elastic sheet 4, because the width of the installation groove 111 is larger than the width of the installation block 21, the gap between the installation groove 111 and the installation block 21 can provide a sliding buffer distance for the steel box girder 1 on the installation plate 2, and the steel box girder 1 extrudes the arc-shaped elastic sheet 4. The arc-shaped elastic sheet 4 is deformed under stress and slides on the mounting block 21, the arc-shaped elastic sheet 4 drives the two push plates 52 to slide towards the direction away from each other, and the pressure spring 53 compresses. The elasticity that the compression of pressure spring 53 produced promotes push pedal 52 and moves towards the direction that is close to each other, plays certain effect of blockking to the deformation of arc shell fragment 4, makes arc shell fragment 4 have certain reaction force to steel box girder 1, plays certain cushioning effect to steel box girder 1 to the vibrations of steel box girder 1 on the length direction of arc shell fragment 4 have been reduced to a certain extent.
The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.
Claims (8)
1. The utility model provides a large-span bridge is with shock attenuation steel box girder, includes steel box girder (1), its characterized in that: still include mounting panel (2), mounting groove (111) have been seted up to the bottom of steel box girder (1), the fixed installation piece (21) that is provided with on mounting panel (2), steel box girder (1) can be located on installation piece (21) through mounting groove (111) cover, installation piece (21) slide has arc shell fragment (4), the convex surface of arc shell fragment (4) and the cell wall butt of mounting groove (111), be provided with the locating part that is used for injecing arc shell fragment (4) sliding position on installation piece (21).
2. The shock-absorbing steel box girder for large-span bridges according to claim 1, wherein: the limiting parts are limiting blocks (5), the limiting blocks (5) are arranged to be two, the limiting blocks (5) are located on two sides of the arc-shaped elastic piece (4), two limiting grooves (51) are formed in the side walls, close to each other, of the limiting blocks (5) along the length direction of the arc-shaped elastic piece (4), and two ends of the arc-shaped elastic piece (4) are arranged in the two limiting grooves (51) in a sliding mode respectively.
3. The shock-absorbing steel box girder for large-span bridges according to claim 2, wherein: a push plate (52) is arranged in the limiting groove (51) in a sliding manner, and a pressure spring (53) for driving the push plate (52) to move towards the direction close to the arc-shaped elastic sheet (4) is arranged in the limiting groove (51); one end of the pressure spring (53) is abutted against the side wall of the limiting groove (51) far away from the arc-shaped elastic sheet (4), and the other end of the pressure spring is abutted against the side wall of the push plate (52) far away from the arc-shaped elastic sheet (4).
4. The shock-absorbing steel box girder for large-span bridges according to claim 1, wherein: the mounting panel (2) perpendicular to arc shell fragment (4) slip direction's both sides are provided with fixed plate (6), slide bar (7) that are on a parallel with arc shell fragment (4) are worn to be equipped with in fixed plate (6) horizontal slip, be provided with on slide bar (7) and be used for driving about slide bar (7) and steel box girder (1) support tight elastic component.
5. The shock-absorbing steel box girder for large-span bridges according to claim 4, wherein: the elastic piece is a buffer spring (73), and one end of the sliding rod (7) close to the bottom plate (11) is fixedly provided with a buffer block (71); one end of the buffer spring (73) is abutted against the side wall of the buffer block (71) far away from the bottom plate (11), and the other end of the buffer spring is abutted against the side wall of the fixing plate (6) close to the bottom plate (11).
6. The shock-absorbing steel box girder for large-span bridges according to claim 1, wherein: the steel box girder (1) comprises a bottom plate (11), two auxiliary plates (12), two cantilever brackets (13) and a top plate (14), wherein the two auxiliary plates (12) are vertically arranged on two sides of the bottom plate (11) respectively, the two cantilever brackets (13) are arranged on the tops of the two auxiliary plates (12) respectively, the top plate (14) is horizontally arranged on the two cantilever brackets (13), a damping spring (3) is arranged between the bottom plate (11) and the top plate (14), one end of the damping spring (3) is abutted to the top wall of the bottom plate (11), and the other end of the damping spring is abutted to the bottom wall of the top plate (14).
7. The shock-absorbing steel box girder for large-span bridges according to claim 6, wherein: a partition plate (15) is arranged between the two auxiliary plates (12), and a through hole (151) is formed in the partition plate (15).
8. The shock-absorbing steel box girder for large-span bridges according to claim 6, wherein: the bottom of roof (14) is fixed and is provided with joint strip (141), offer on cantilever frame (13) and supply joint strip (141) male joint groove (131).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020425029.5U CN211922244U (en) | 2020-03-27 | 2020-03-27 | Damping steel box girder for large-span bridge |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020425029.5U CN211922244U (en) | 2020-03-27 | 2020-03-27 | Damping steel box girder for large-span bridge |
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| CN211922244U true CN211922244U (en) | 2020-11-13 |
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| CN202020425029.5U Active CN211922244U (en) | 2020-03-27 | 2020-03-27 | Damping steel box girder for large-span bridge |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112921826A (en) * | 2021-01-27 | 2021-06-08 | 太仓市路桥工程有限公司 | Annular corridor pedestrian bridge of quick construction |
| CN112942560A (en) * | 2021-02-03 | 2021-06-11 | 四川洪瑞建工集团有限公司 | Structure is built to antidetonation room |
| CN113026526A (en) * | 2021-04-01 | 2021-06-25 | 南京中铁桥机工程有限公司 | Large-span cable-stayed bridge framing type steel box girder |
| CN114411522A (en) * | 2022-03-10 | 2022-04-29 | 江苏旭辰交通科技发展有限公司 | Assembled combined box girder and construction method thereof |
-
2020
- 2020-03-27 CN CN202020425029.5U patent/CN211922244U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112921826A (en) * | 2021-01-27 | 2021-06-08 | 太仓市路桥工程有限公司 | Annular corridor pedestrian bridge of quick construction |
| CN112921826B (en) * | 2021-01-27 | 2022-08-02 | 太仓市路桥工程有限公司 | Annular corridor pedestrian bridge of quick construction |
| CN112942560A (en) * | 2021-02-03 | 2021-06-11 | 四川洪瑞建工集团有限公司 | Structure is built to antidetonation room |
| CN113026526A (en) * | 2021-04-01 | 2021-06-25 | 南京中铁桥机工程有限公司 | Large-span cable-stayed bridge framing type steel box girder |
| CN114411522A (en) * | 2022-03-10 | 2022-04-29 | 江苏旭辰交通科技发展有限公司 | Assembled combined box girder and construction method thereof |
| CN114411522B (en) * | 2022-03-10 | 2024-07-16 | 中交一公局第五工程有限公司 | Assembled combined box girder and construction method thereof |
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