CN113652944A

CN113652944A - A pedestrian crossing and diverting bridge with prefabricated large-span annular steel structure

Info

Publication number: CN113652944A
Application number: CN202111031742.7A
Authority: CN
Inventors: 戚秀芝; 徐志程
Original assignee: Chongqing Shengxia Guoshi Technology Co ltd
Current assignee: Chongqing Shengxia Guoshi Technology Co ltd
Priority date: 2021-09-03
Filing date: 2021-09-03
Publication date: 2021-11-16

Abstract

The invention relates to an assembled large-span annular steel structure pedestrian crossing and shunting bridge. The ends of two arc-shaped beam frames at the top of a support column that are far away from each other are respectively slidingly connected with two adjacent bridge piers. A fixed component of an arc-shaped beam frame, the arc-shaped groove in the pier is slidably connected with an arc-shaped connecting block, both ends of the arc-shaped connecting block are provided with connecting grooves, and the end of the arc-shaped beam frame away from the support column extends to the corresponding connecting groove Inside, the arc-shaped connecting block is fixedly connected with the arc-shaped beam frame through a plurality of connecting plates, the end of the arc-shaped beam frame away from the support column is provided with a plurality of positioning pins matched with the pin holes, and the arc-shaped groove is provided with a drive for driving. The lifting component for lifting and lowering the arc-shaped connecting block, and the arc-shaped groove is provided with a supporting component for supporting the arc-shaped connecting block, which solves the current difficulty in the installation of bridge frames, low installation accuracy, high construction cost, and insufficient shock absorption, which affects its the issue of service life.

Description

Pedestrian cross-flow-distribution bridge with assembled large-span annular steel structure

Technical Field

The invention belongs to the technical field of assembly type overpasses, and particularly relates to a pedestrian cross-flow-dividing bridge with an assembly type large-span annular steel structure.

Background

The steel structure pedestrian bridge is relatively common in urban bridge design, the steel structure bridge is superior to a concrete structure bridge in the aspects of structural performance (including anti-seismic performance), economy (including maintenance during later operation) and the like, and the steel structure bridge is adopted in future urban construction in a large amount to become a trend.

However, in the prior art, in the construction process of the pedestrian overpass, the assembled bridge frame is mostly hoisted to the pier through a crane, and then position adjustment and fixation are carried out by workers, because the bridge frame is too heavy, when the workers adjust the position of the bridge frame, a large amount of manpower is needed, position deviation is easy to occur in the position adjustment process, and installation precision is influenced, so that the safety of the pedestrian overpass in the later period is influenced.

Disclosure of Invention

In view of the above, the invention provides a pedestrian cross-flow diversion bridge with an assembled type large-span annular steel structure, which aims to solve the problems that the existing bridge frame is difficult to install, low in installation precision, high in construction cost, insufficient in shock absorption and influenced in service life.

In order to achieve the purpose, the invention provides the following technical scheme:

a pedestrian cross-flow-dividing bridge with an assembled large-span annular steel structure comprises four piers arranged in a rectangular shape and four support columns arranged in a rectangular shape, wherein the support columns are positioned between two adjacent piers, two symmetrical arc beam frames are arranged at the tops of the support columns, the ends, away from each other, of the two arc beam frames are respectively in sliding connection with the two adjacent piers, fixing components for fixing the two arc beam frames are arranged on the support columns, arc grooves are formed in the piers, arc connecting blocks are connected in the arc grooves in a sliding mode, connecting grooves are formed in the two ends of each arc connecting block, the ends, away from the support columns, of the arc beam frames extend into the corresponding connecting grooves, the arc connecting blocks are fixedly connected with the arc beam frames through a plurality of connecting plates, a plurality of pin holes are formed in the inner wall of one side, close to each other, of each connecting groove, and a plurality of positioning pins matched with the pin holes are arranged at the ends, away from the support columns, of the arc beam frames, the improved bridge plate is characterized in that a lifting assembly used for driving the arc-shaped connecting block to lift is arranged in the arc-shaped groove, a supporting assembly used for supporting the arc-shaped connecting block is arranged in the arc-shaped groove, a placing groove is formed in the top end of the pier, a rubber shock absorber is fixedly connected to the inside of the placing groove, a bridge plate is arranged at the top of the rubber shock absorber, the top of the pier and the top of the bridge plate are provided with the same pressing plate, a second bolt and a third bolt are arranged in the pressing plate, the bottom ends of the second bolt and the third bolt are respectively in threaded connection with the pier and the bridge plate, stairs are arranged on the two sides of the pier far away from the bridge plate, a second railing is fixedly connected to the top of the pressing plate, and a plurality of first railings matched with the second railings are fixedly connected to the top of the bridge plate.

Furthermore, the fixing assembly comprises two symmetrical connecting plates arranged at the top of the support column, one end, close to each other, of each arc-shaped beam frame is fixedly connected with the corresponding connecting plate, and the two connecting plates are fixedly connected through a first bolt.

Further, the lifting unit is including rotating the lead screw of connection in the arc wall, the outer wall fixed cover of lead screw is equipped with first synchronizing wheel, be equipped with driving motor in the pier, driving motor's output shaft fixedly connected with second synchronizing wheel, connect through synchronous belt drive between second synchronizing wheel and the first synchronizing wheel, and the top screw thread of lead screw runs through the arc connecting block, the arc wall is vertical fixedly connected with slide bar, and the dead end of slide bar slides and runs through the arc connecting block.

Further, the supporting component is including setting up the rectangular channel that is linked together in the pier and with the arc wall, sliding connection has first rack in the rectangular channel, the fixed a plurality of first springs of having arranged of one side inner wall that the arc connecting block was kept away from to the rectangular channel, and the other end of a plurality of first springs all with first rack fixed connection, one side fixedly connected with that the arc connecting block is close to first rack and the second rack of first rack looks meshing.

Further, adjacent two the same arc backing plate of top fixedly connected with of arc roof beam structure, the top fixedly connected with rubber pad of arc backing plate, and the top of rubber pad and the bottom fixed connection of bridge plate can play the supporting role to the bridge plate through the arc backing plate to can be connected bridge plate and arc roof beam structure, make things convenient for the later stage to play the cushioning effect to the bridge plate.

Further, a rubber block is arranged between the two connecting plates, and the two arc-shaped beam frames can be tightly connected together through the rubber block.

Furthermore, a plurality of damping springs are fixedly arranged on one side, far away from the bridge plate, of the placing groove, the other ends of the damping springs are fixedly connected with the bridge plate, and the bridge plate can be transversely damped through the damping springs.

Further, be equipped with a plurality of through-holes in the bridge plate, the bottom inner wall fixedly connected with of standing groove slides the fixed column that runs through the through-hole, can fix a position the bridge plate through the cooperation of through-hole and fixed column.

Further, the top fixedly connected with arc splint of support column, and the inner wall of arc splint and bridge plate is laminated mutually, be equipped with a plurality of fourth bolts in the arc splint, it is a plurality of the one end that the fourth bolt is close to the bridge plate all with bridge plate threaded connection, can further fix the bridge plate through the cooperation of arc splint and fourth bolt.

Further, adjacent two the first down tube of equal fixedly connected with between the pier, the equal fixedly connected with second down tube in both sides of support column, adjacent two the same diaphragm of top fixedly connected with of first down tube and second down tube, a plurality of viscous damping rods of top fixedly connected with of diaphragm, it is a plurality of the top of viscous damping rod all with the bottom fixed connection of arc roof beam structure, when the bridge plate takes place the vibration, the bridge plate drives the arc roof beam structure through the arc backing plate and vibrates, and then not only can play the supporting role to the arc roof beam structure through viscous damping rod, can also play the shock attenuation cushioning effect to the arc roof beam structure.

The invention has the beneficial effects that:

1. according to the pedestrian cross-flow-dividing bridge with the assembled large-span annular steel structure, the arc-shaped beam frames are inserted into the connecting grooves, then the arc-shaped connecting blocks and the arc-shaped beam frames are fixed through the connecting plates, next, two adjacent arc-shaped beam frames are fixed through the placing grooves, at the moment, the eight arc-shaped beam frames are connected into a circular whole, and the arc-shaped beam frames are assembled on the ground in advance, so that the assembling difficulty of the arc-shaped beam frames can be reduced, and errors in the positions of the arc-shaped beam frames can be avoided in the later period.

2. According to the pedestrian cross-flow-dividing bridge with the assembled large-span annular steel structure, the driving motor is started to drive the second synchronous wheel, the second synchronous wheel drives the first synchronous wheel and the lead screw to rotate through the synchronous belt, the arc-shaped connecting block drives the arc-shaped beam frame to move upwards along with the rotation of the lead screw until the arc-shaped connecting block moves to the inner wall of the top of the rectangular groove, the assembled arc-shaped beam frame can be easily moved to a specified position, the position of the arc-shaped beam frame does not need to be adjusted manually, and errors in the position of the arc-shaped beam frame are avoided.

3. According to the pedestrian cross-flow-dividing bridge with the assembled large-span annular steel structure, the rubber shock absorber is arranged at the top of the placing groove, the inner wall of one side of the placing groove is provided with the plurality of damping springs, so that when a large-sized vehicle comes and goes, the rubber shock absorber can be improved to play a shock absorption role in the vertical direction of a bridge plate, and the plurality of damping springs can also play a shock absorption role in the transverse direction of the bridge plate.

4. According to the pedestrian cross-flow-dividing bridge with the assembled large-span annular steel structure, the four support columns are respectively arranged in the middle of the road, the arc-shaped beam frame can be just erected at the tops of the support columns, and then the support columns can support the arc-shaped beam frame, so that the phenomenon that a bridge plate and the arc-shaped beam frame collapse is avoided.

5. According to the pedestrian cross-flow-dividing bridge with the assembled large-span annular steel structure, the arc-shaped beam frame is assembled on the ground in advance, and then the assembled arc-shaped beam frame is moved to the inner wall of the top of the screw rod through the screw rod, so that the assembly and the assembly of the arc-shaped beam frame are completed, the assembly efficiency can be improved, the precision error generated during the assembly of the arc-shaped beam frame can be avoided, the safety of a bridge in the later period is influenced, and in addition, the shock absorption and the buffering effect can be performed on a bridge plate when a large-sized vehicle comes and goes through the matching of the rubber shock absorber and the damping spring.

Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the invention may be realized and attained by the means of the instrumentalities and combinations particularly pointed out hereinafter.

Drawings

For the purposes of promoting a better understanding of the objects, aspects and advantages of the invention, reference will now be made to the following detailed description taken in conjunction with the accompanying drawings in which:

FIG. 1 is a first front view of a pedestrian cross-flow diversion bridge with an assembled large-span annular steel structure according to the invention;

FIG. 2 is a front cross-sectional view of a pedestrian cross-flow bridge of an assembled large-span annular steel structure according to the present invention;

FIG. 3 is a cross-sectional view taken along line A-A of FIG. 1 in accordance with the present invention;

FIG. 4 is a cross-sectional view taken along line B-B of FIG. 1 in accordance with the present invention;

FIG. 5 is a cross-sectional view taken along line C-C of FIG. 3 in accordance with the present invention;

FIG. 6 is an enlarged view taken at D of FIG. 3 in accordance with the present invention;

FIG. 7 is an enlarged view of the invention at E in FIG. 3;

FIG. 8 is a view of the present invention taken along direction F of FIG. 1;

FIG. 9 is a three-dimensional view of a pier in a pedestrian crossing flow-dividing bridge with an assembled large-span annular steel structure according to the invention;

FIG. 10 is an assembly view of an arc-shaped connecting block and an arc-shaped beam frame in a pedestrian cross-flow bridge with an assembled large-span annular steel structure according to the invention;

fig. 11 is a second front view of the pedestrian cross-flow diversion bridge with the assembled large-span annular steel structure.

Reference numerals: 1. a bridge pier; 2. an arc-shaped slot; 3. a screw rod; 4. a first synchronizing wheel; 5. a drive motor; 6. a second synchronizing wheel; 7. a synchronous belt; 8. an arc-shaped connecting block; 9. connecting grooves; 10. an arc-shaped beam frame; 11. a connecting plate; 12. a first bolt; 13. a placement groove; 14. a bridge plate; 15. pressing a plate; 16. a second bolt; 17. a third bolt; 18. an arc-shaped base plate; 19. a rubber damper; 20. a staircase; 21. a rectangular groove; 22. a first rack; 23. a first spring; 24. a second rack; 25. a first diagonal member; 26. a second diagonal member; 27. a transverse plate; 28. a viscous damping rod; 29. a rubber block; 30. a damping spring; 31. a support pillar; 32. a pin hole; 33. positioning pins; 34. a first rail; 35. a second rail; 36. a through hole; 37. fixing a column; 38. an arc-shaped splint; 39. a fourth bolt; 40. a rubber pad; 41. a slide bar.

Detailed Description

The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention. It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present invention in a schematic way, and the features in the following embodiments and examples may be combined with each other without conflict.

Wherein the showings are for the purpose of illustrating the invention only and not for the purpose of limiting the same, and in which there is shown by way of illustration only and not in the drawings in which there is no intention to limit the invention thereto; to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.

The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar components; in the description of the present invention, it should be understood that if there is an orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "front", "rear", etc., based on the orientation or positional relationship shown in the drawings, it is only for convenience of description and simplification of description, but it is not an indication or suggestion that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes, and are not to be construed as limiting the present invention, and the specific meaning of the terms may be understood by those skilled in the art according to specific situations.

Example one

As shown in fig. 1-10, an assembled pedestrian cross-flow-dividing bridge with a large-span annular steel structure comprises four piers 1 arranged in a rectangular shape and four support columns 31 arranged in a rectangular shape, wherein the support columns 31 are located between two adjacent piers 1, two symmetrical arc beam frames 10 are arranged at the tops of the support columns 31, one ends, far away from each other, of the two arc beam frames 10 are respectively connected with the two adjacent piers 1 in a sliding manner, fixing components for fixing the two arc beam frames 10 are arranged on the support columns 31, arc grooves 2 are arranged in the piers 1, arc connecting blocks 8 are connected in the arc grooves 2 in a sliding manner, connecting grooves 9 are arranged at two ends of each arc connecting block 8, one ends, far away from the support columns 31, of the arc beam frames 10 extend into the corresponding connecting grooves 9, the arc connecting blocks 8 are fixedly connected with the arc beam frames 10 through a plurality of connecting plates 11, a plurality of pin holes 32 are arranged on the inner walls of one sides, close to each other, of the two connecting grooves 9, one end that the support column 31 was kept away from to arc roof beam structure 10 all is equipped with a plurality of and pinhole 32 matched with locating pin 33, be equipped with in the arc wall 2 and be used for driving arc connecting block 8 and carry out the lift subassembly that goes up and down, be equipped with in the arc wall 2 and be used for carrying out the supporting component that supports arc connecting block 8, the top of pier 1 is equipped with standing groove 13, the inside fixedly connected with rubber shock absorber 19 of standing groove 13, rubber shock absorber 19's top is equipped with bridge plate 14, the top of pier 1 and bridge plate 14 is equipped with same clamp plate 15, be equipped with second bolt 16 and third bolt 17 in the clamp plate 15, the bottom of second bolt 16 and third bolt 17 respectively with pier 1 and bridge plate 14 threaded connection, the both sides that bridge plate 14 was kept away from to pier 1 all are equipped with stair 20, the top fixedly connected with second railing 35 of clamp plate 15, the top fixedly connected with a plurality of first railings 34 with second railing 35 matched with of bridge plate 14.

In the invention, the four support columns 31 are respectively arranged in the middle of the road, the arc-shaped beam frame 10 can be erected at the top of the support columns 31, and then the support columns 31 can support the arc-shaped beam frame 10, so that the phenomenon that the bridge plate 14 and the arc-shaped beam frame 10 collapse is avoided.

According to the invention, the arc-shaped beam frames 10 are inserted into the connecting grooves 9, then the arc-shaped connecting blocks 8 and the arc-shaped beam frames 10 are fixed through the connecting plates 11, next two adjacent arc-shaped beam frames 10 are fixed through the placing grooves 13, at the moment, eight arc-shaped beam frames 10 are connected into a circular whole, and the arc-shaped beam frames 10 are assembled on the ground in advance, so that the assembling difficulty of the arc-shaped beam frames 10 can be reduced, and errors can be avoided from occurring in the positions of the arc-shaped beam frames 10 in the later period.

In the invention, the fixing assembly comprises two symmetrical connecting plates 11 arranged at the top of the supporting column 31, one ends of the two arc beam frames 10 close to each other are fixedly connected with the corresponding connecting plates 11, and the two connecting plates 11 are fixedly connected through first bolts 12.

According to the invention, the lifting assembly comprises a screw rod 3 which is rotatably connected in an arc-shaped groove 2, a first synchronizing wheel 4 is fixedly sleeved on the outer wall of the screw rod 3, a driving motor 5 is arranged in the pier 1, an output shaft of the driving motor 5 is fixedly connected with a second synchronizing wheel 6, the second synchronizing wheel 6 is in transmission connection with the first synchronizing wheel 4 through a synchronous belt 7, the top end of the screw rod 3 penetrates through an arc-shaped connecting block 8 in a threaded manner, the arc-shaped groove 2 is longitudinally and fixedly connected with a sliding rod 41, and the fixed end of the sliding rod 41 penetrates through the arc-shaped connecting block 8 in a sliding manner.

According to the invention, the driving motor 5 is started to drive the second synchronizing wheel 6, the second synchronizing wheel 6 drives the first synchronizing wheel 4 and the screw rod 3 to rotate through the synchronous belt 7, the arc-shaped connecting block 8 drives the arc-shaped beam frame 10 to move upwards along with the rotation of the screw rod 3 until the arc-shaped connecting block 8 is moved to the inner wall of the top of the rectangular groove 21, the assembled arc-shaped beam frame 10 can be easily moved to an appointed position, the position of the arc-shaped beam frame 10 does not need to be manually adjusted, and the position of the arc-shaped beam frame 10 is prevented from generating errors.

According to the invention, the supporting assembly comprises a rectangular groove 21 which is arranged in the pier 1 and communicated with the arc-shaped groove 2, a first rack 22 is connected in the rectangular groove 21 in a sliding manner, a plurality of first springs 23 are fixedly arranged on the inner wall of one side, away from the arc-shaped connecting block 8, of the rectangular groove 21, the other ends of the first springs 23 are fixedly connected with the first rack 22, and a second rack 24 meshed with the first rack 22 is fixedly connected to one side, close to the first rack 22, of the arc-shaped connecting block 8.

According to the invention, the same arc-shaped cushion plate 18 is fixedly connected to the tops of two adjacent arc-shaped beam frames 10, the rubber pads 40 are fixedly connected to the tops of the arc-shaped cushion plates 18, and the tops of the rubber pads 40 are fixedly connected with the bottom of the bridge plate 14, so that the bridge plate 14 can be supported through the arc-shaped cushion plates 18, the bridge plate 14 can be connected with the arc-shaped beam frames 10, and the shock absorption effect on the bridge plate 14 in the later period is facilitated.

In the invention, a rubber block 29 is arranged between the two connecting plates 11, and the two arc beam frames 10 can be tightly connected together through the rubber block 29.

In the invention, a plurality of damping springs 30 are fixedly arranged on one side of the placing groove 13 far away from the bridge plate 14, the other ends of the plurality of damping springs 30 are fixedly connected with the bridge plate 14, and the bridge plate 14 can be transversely damped by the damping springs 30.

In the invention, the rubber shock absorber 19 is arranged at the top of the placing groove 13, and the plurality of damping springs 30 are arranged on the inner wall of one side of the placing groove 13, so that when a large-sized vehicle comes and goes, the rubber shock absorber 19 can play a shock absorption role in the vertical direction of the bridge plate 14, and the plurality of damping springs 30 can also play a shock absorption role in the transverse direction of the bridge plate 14.

In the invention, a plurality of through holes 36 are arranged in the bridge plate 14, the inner wall of the bottom of the placing groove 13 is fixedly connected with fixing columns 37 which slidably penetrate through the through holes 36, and the bridge plate 14 can be positioned through the matching of the through holes 36 and the fixing columns 37.

According to the invention, the top of the supporting column 31 is fixedly connected with the arc-shaped clamping plate 38, the arc-shaped clamping plate 38 is attached to the inner wall of the bridge plate 14, a plurality of fourth bolts 39 are arranged in the arc-shaped clamping plate 38, one ends of the plurality of fourth bolts 39, which are close to the bridge plate 14, are in threaded connection with the bridge plate 14, and the bridge plate 14 can be further fixed through the matching of the arc-shaped clamping plate 38 and the fourth bolts 39.

Example two

As a further improvement of the previous embodiment, as shown in fig. 1 to 11, the present embodiment is a pedestrian cross-flow-dividing bridge with an assembled large-span annular steel structure, and includes four piers 1 arranged in a rectangular shape and four support columns 31 arranged in a rectangular shape, and the support columns 31 are located between two adjacent piers 1, two symmetrical arc beam frames 10 are provided at the top of the support columns 31, ends of the two arc beam frames 10 away from each other are respectively connected with the two adjacent piers 1 in a sliding manner, fixing components for fixing the two arc beam frames 10 are provided on the support columns 31, an arc groove 2 is provided in each pier 1, an arc connecting block 8 is slidably connected in each arc groove 2, two ends of each arc connecting block 8 are provided with a connecting groove 9, one end of each arc beam frame 10 away from each support column 31 extends into the corresponding connecting groove 9, and each arc connecting block 8 is fixedly connected with the arc beam frame 10 through a plurality of connecting plates 11, two one side inner walls that connecting grooves 9 are close to each other all are equipped with a plurality of pinholes 32, and the one end that support column 31 was kept away from to arc roof beam structure 10 all is equipped with a plurality ofly and pinhole 32 matched with locating pin 33, is equipped with in the arc wall 2 to be used for driving the lifting unit that arc connecting block 8 goes up and down.

Be equipped with in the arc wall 2 and be used for carrying out the supporting component who supports arc connecting block 8, the top of pier 1 is equipped with standing groove 13, the inside fixedly connected with rubber shock absorber 19 of standing groove 13, rubber shock absorber 19's top is equipped with bridge plate 14, pier 1 and bridge plate 14's top is equipped with same clamp plate 15, be equipped with second bolt 16 and third bolt 17 in the clamp plate 15, the bottom of second bolt 16 and third bolt 17 respectively with pier 1 and bridge plate 14 threaded connection, pier 1 keeps away from the both sides of bridge plate 14 and all is equipped with stair 20, the top fixedly connected with second railing 35 of clamp plate 15, the top fixedly connected with of bridge plate 14 a plurality of and the first railing 34 of second railing 35 matched with.

In the invention, a first diagonal rod 25 is fixedly connected between two adjacent piers 1, second diagonal rods 26 are fixedly connected on two sides of a supporting column 31, the top ends of the two adjacent first diagonal rods 25 and the second diagonal rods 26 are fixedly connected with a same transverse plate 27, the top of the transverse plate 27 is fixedly connected with a plurality of viscous damping rods 28, the top ends of the viscous damping rods 28 are fixedly connected with the bottom of an arc-shaped beam frame 10, when a bridge plate 14 vibrates, the bridge plate 14 drives the arc-shaped beam frame 10 to vibrate through an arc-shaped backing plate 18, and then the viscous damping rods 28 not only can support the arc-shaped beam frame 10, but also can play a role in damping and buffering for the arc-shaped beam frame 10.

The advantages of the second embodiment over the first embodiment are: first down tube 25 of equal fixedly connected with between two adjacent pier 1, the equal fixedly connected with second down tube 26 in both sides of support column 31, the same diaphragm 27 of top fixedly connected with of two adjacent first down tube 25 and second down tube 26, a plurality of viscous damping rods 28 of top fixedly connected with of diaphragm 27, the top of a plurality of viscous damping rods 28 all with the bottom fixed connection of arc roof beam structure 10, when the bridge plate 14 takes place the vibration, bridge plate 14 drives arc roof beam structure 10 through arc backing plate 18 and vibrates, and then not only can play the supporting role to arc roof beam structure 10 through viscous damping rod 28, can also play the shock attenuation cushioning effect to arc roof beam structure 10.

This pedestrian cross-flow diversion bridge of assembled large-span annular steel construction is equipped with pier 1 respectively in one side of crossroad, four piers 1 are located the road both sides respectively, insert arc roof beam structure 10 in spread groove 9, fix arc connecting block 8 and arc roof beam structure 10 through connecting plate 11, fix two adjacent arc roof beam structures 10 through standing groove 13 after that, eight arc roof beam structures 10 connect to be a circular whole this moment, respectively at the fixed arc backing plate 18 in the top of eight arc roof beam structures 10.

The driving motor 5 is started to drive the second synchronous wheel 6, the second synchronous wheel 6 drives the first synchronous wheel 4 and the screw rod 3 to rotate through the synchronous belt 7, the screw rod 3 is in threaded connection with the arc-shaped connecting block 8, the arc-shaped connecting block 8 drives the arc-shaped beam frame 10 to move upwards along with the rotation of the screw rod 3 until the arc-shaped connecting block 8 moves to the top inner wall of the rectangular groove 21, when the arc-shaped connecting block 8 moves, the second rack 24 can push the first rack 22 to slide towards one side, the first spring 23 starts to compress until the arc-shaped connecting block 8 stops moving, the first rack 22 is clamped with the second rack 24 again under the elastic force of the first spring 23, the bridge plate 14 is hoisted to the bottom inner wall of the placing groove 13 through the hoisting machine, the bridge plate 14 can just press against the top of the rubber shock absorber 19, the fixing column 37 just can penetrate through the through hole 36, the pressing plate 15 covers the tops of the bridge plate 1 and the bridge plate 14, the pressing plate 15 is fixed with the bridge pier 1 and the bridge plate 14 through the second bolt 16 and the third bolt 17 respectively, then four supporting columns 31 are arranged in the middle of a road respectively, the arc beam frame 10 can be erected at the tops of the supporting columns 31 just, a second inclined rod 26 and a transverse plate 27 are arranged on one sides of the supporting columns 31 and the bridge pier 1, the transverse plate 27 is fixed to the top ends of the second inclined rod 26 and the transverse plate 27, a plurality of viscous damping rods 28 are fixed on the transverse plate 27, and the viscous damping rods 28 can absorb shock and support the arc beam frame 10.

Finally, the above embodiments are only intended to illustrate the technical solutions of the present invention and not to limit the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions, and all of them should be covered by the claims of the present invention.

Claims

1. An assembled long-span annular steel structure pedestrian crossing shunting bridge, comprising four piers (1) arranged in a rectangular shape and four supporting columns (31) arranged in a rectangular shape, and the supporting columns (31) are located adjacent to each other. Between two bridge piers (1), it is characterized in that the top of the support column (31) is provided with two relatively symmetrical arc-shaped beam frames (10), and the ends of the two arc-shaped beam frames (10) are remote from each other The two adjacent bridge piers (1) are respectively slidably connected, the support column (31) is provided with a fixing component for fixing the two arc-shaped beam frames (10), and the bridge pier (1) is provided with an arc-shaped groove (10). 2), an arc-shaped connecting block (8) is slidably connected in the arc-shaped groove (2), both ends of the arc-shaped connecting block (8) are provided with connecting grooves (9), and the arc-shaped beam frame is (10) one end away from the support column (31) extends into the corresponding connecting groove (9), the arc-shaped connecting block (8) is fixedly connected to the arc-shaped beam frame (10) through a plurality of connecting plates (11), A plurality of pin holes (32) are provided on the inner wall of one side of the two connecting grooves (9) that are close to each other, and a plurality of pin holes (32) are provided on one end of the arc-shaped beam frame (10) away from the support column (31). A positioning pin (33) matched with the hole (32), a lifting assembly for driving the arc-shaped connecting block (8) to lift and lower is arranged in the arc-shaped groove (2), and a lifting component is arranged in the arc-shaped groove (2) For the support assembly for supporting the arc-shaped connecting block (8), the top of the bridge pier (1) is provided with a placement groove (13), and the interior of the placement groove (13) is fixedly connected with a rubber shock absorber (19) , the top of the rubber shock absorber (19) is provided with a bridge plate (14), the top of the bridge pier (1) and the bridge plate (14) are provided with the same pressure plate (15), the pressure plate (15) A second bolt (16) and a third bolt (17) are provided, and the bottom ends of the second bolt (16) and the third bolt (17) are respectively threadedly connected with the bridge pier (1) and the bridge plate (14), so Stairs (20) are provided on both sides of the bridge pier (1) away from the bridge deck (14), the top of the pressure plate (15) is fixedly connected with a second railing (35), and the top of the bridge deck (14) is fixed A plurality of first rails (34) matched with the second rails (35) are connected.

2. The pedestrian crossing and diverting bridge of a prefabricated large-span annular steel structure according to claim 1, wherein the fixed assembly comprises two relatively symmetrical connecting plates ( 11), the mutually close ends of the two arc-shaped beam frames (10) are fixedly connected to the corresponding connecting plates (11), and the two connecting plates (11) are fixedly connected by first bolts (12).

3. The pedestrian crossing shunting bridge of an assembled large-span annular steel structure according to claim 1, wherein the lifting assembly comprises a lead screw (3) rotatably connected in the arc groove (2), The outer wall of the screw rod (3) is fixedly sleeved with a first synchronizing wheel (4), the bridge pier (1) is provided with a drive motor (5), and the output shaft of the drive motor (5) is fixedly connected with a first synchronizing wheel (4). Two synchronizing pulleys (6), the second synchronizing pulley (6) and the first synchronizing pulley (4) are connected by a synchronizing belt (7), and the top thread of the screw rod (3) penetrates the arc-shaped connecting block ( 8), the arc groove (2) is longitudinally fixedly connected with a sliding rod (41), and the fixed end of the sliding rod (41) slides through the arc connecting block (8).

4. The pedestrian crossing and diverting bridge of a prefabricated large-span annular steel structure according to claim 1, wherein the support assembly comprises a bridge pier (1) and communicated with the arc groove (2). The rectangular groove (21) is slidably connected with a first rack (22), and the inner wall of the rectangular groove (21) is fixedly arranged on the side away from the arc-shaped connecting block (8). a plurality of first springs (23), and the other ends of the plurality of first springs (23) are fixedly connected to the first rack (22), and the arc-shaped connecting block (8) is close to the first rack (22). One side is fixedly connected with a second rack (24) that meshes with the first rack (22).

5. The pedestrian crossing and diverting bridge of a prefabricated large-span annular steel structure according to claim 1, wherein the tops of two adjacent arc-shaped beam frames (10) are fixedly connected with the same arc-shaped bridge. A backing plate (18), the top of the curved backing plate (18) is fixedly connected with a rubber pad (40), and the top of the rubber pad (40) is fixedly connected with the bottom of the bridge plate (14).

6 . The pedestrian crossing and diverting bridge of an assembled long-span annular steel structure according to claim 2 , wherein a rubber block ( 29 ) is arranged between the two connecting plates ( 11 ). 7 .

7 . The pedestrian crossing shunting bridge of an assembled large-span annular steel structure according to claim 1 , wherein the placement groove ( 13 ) is fixedly arranged on one side away from the bridge plate ( 14 ) with a plurality of A damping spring (30) is provided, and the other ends of the plurality of damping springs (30) are fixedly connected to the bridge plate (14).

8 . The pedestrian crossing and diverting bridge of a prefabricated large-span annular steel structure according to claim 1 , wherein a plurality of through holes ( 36 ) are provided in the bridge plate ( 14 ), and the placement grooves The bottom inner wall of (13) is fixedly connected with a fixing column (37) sliding through the through hole (36).

9. The pedestrian crossing and diverting bridge of an assembled large-span annular steel structure according to claim 1, wherein the top of the support column (31) is fixedly connected with an arc-shaped splint (38), and the arc-shaped The splint (38) is in contact with the inner wall of the bridge plate (14), a plurality of fourth bolts (39) are arranged in the arc-shaped splint (38), and the plurality of fourth bolts (39) are close to the bridge plate (39). One end of 14) is threadedly connected with the bridge plate (14).

10. The pedestrian crossing and diverting bridge of a prefabricated large-span annular steel structure according to claim 1, wherein a first inclined rod (25) is fixedly connected between two adjacent bridge piers (1). ), both sides of the support column (31) are fixedly connected with a second inclined rod (26), and the top ends of the two adjacent first inclined rods (25) and the second inclined rod (26) are fixedly connected with a A plurality of viscous damping rods (28) are fixedly connected to the top of the same transverse plate (27), and the tops of the plurality of viscous damping rods (28) are connected to the arc-shaped beam frame (28). 10) bottom fixed connection.