CN113136785A

CN113136785A - Environment-friendly bridge spliced by steel structures and construction method thereof

Info

Publication number: CN113136785A
Application number: CN202110444869.5A
Authority: CN
Inventors: 张锚; 袁刚; 王秋胜; 舒彪
Original assignee: Zhejiang Xingye Municipal Engineering Co ltd
Current assignee: Zhejiang Xingye Municipal Engineering Co ltd
Priority date: 2021-04-24
Filing date: 2021-04-24
Publication date: 2021-07-20

Abstract

The application relates to an environment-friendly bridge spliced by steel structures and a construction method thereof, wherein the environment-friendly bridge comprises a plurality of groups of bridge units spliced and connected along the horizontal direction, each bridge unit comprises a pier seat, a bridge floor arranged above the pier seat and used for allowing vehicles to pass through and two groups of guardrail assemblies arranged on the bridge floor, and the two groups of guardrail assemblies are distributed along the width direction of the bridge floor; the guardrail component comprises a fixed plate arranged on the bridge floor, a blocking piece positioned on the side, close to the center of the bridge floor, of the fixed plate and at least one connecting rod arranged between the fixed plate and the blocking piece, one end of each connecting rod is fixed on the blocking piece, the other end of each connecting rod penetrates through the fixed plate, and a driving piece used for driving the connecting rod to move towards one side close to or far away from the fixed plate is arranged on the fixed plate. This application convenience is high effect when having the current width of regulation bridge floor.

Description

Environment-friendly bridge spliced by steel structures and construction method thereof

Technical Field

The application relates to the technical field of bridge construction, in particular to an environment-friendly bridge spliced by steel structures and a construction method thereof.

Background

The bridge is an overhead channel built for crossing rivers, valleys, obstacles or other traffic lines, and can be divided into a girder bridge, a slab bridge, an arch bridge, a steel structure bridge, a suspension bridge, a combined system bridge and the like according to the stress condition of a bearing member.

The bridge generally includes the bridge floor that is used for supplying the vehicle to pass and sets up the pier base that is used for supporting the bridge floor below the bridge floor, and along with the development of social economy, traffic volume of going and vehicle load capacity are also higher and higher, and the bridge floor inevitably can appear the damage of different degrees in the use, if not repair in time then can influence the bearing security and the life of bridge. In order to reduce the influence of vehicle passing on bridge deck construction maintenance, the width of the bridge deck for vehicles to pass needs to be changed in the construction process so as to carry out traffic control on the vehicles passing through the bridge deck, and therefore management and construction are facilitated.

However, in the related art, when the bridge is used for construction and maintenance, the width of the bridge deck for the vehicles to pass through is usually adjusted by means of other auxiliary tools, for example, a construction baffle is mounted on the bridge deck to divide the bridge deck into a vehicle passing area and a construction and maintenance area, wherein the vehicle passing area is used for the vehicles to pass through, and the construction and maintenance area is used for workers to operate and maintain the bridge deck.

Disclosure of Invention

In order to improve the convenience of the adjustment of the passing width of the bridge deck, the application provides an environment-friendly bridge spliced by steel structures and a construction method thereof.

First aspect, the application provides an environment-friendly bridge of steel construction concatenation adopts following technical scheme:

an environment-friendly bridge spliced by steel structures comprises a plurality of groups of bridge units spliced and connected along the horizontal direction, wherein each bridge unit comprises a pier seat, a bridge floor arranged above the pier seat and used for allowing vehicles to pass through and two groups of guardrail assemblies arranged on the bridge floor, and the two groups of guardrail assemblies are distributed along the width direction of the bridge floor; the guardrail component comprises a fixed plate arranged on the bridge floor, a blocking piece positioned on the side, close to the center of the bridge floor, of the fixed plate and at least one connecting rod arranged between the fixed plate and the blocking piece, one end of each connecting rod is fixed on the blocking piece, the other end of each connecting rod penetrates through the fixed plate, and a driving piece used for driving the connecting rod to move towards one side close to or far away from the fixed plate is arranged on the fixed plate.

Through adopting above-mentioned technical scheme, when the bridge floor normally used, the piece is kept off to the partition in two sets of guardrail subassemblies and is located the both ends of bridge floor width direction respectively, and the vehicle can be followed the bridge floor top two sets of spaces that keep off between the piece and pass this moment. When the bridge floor is damaged and needs to be maintained after being used for a long time, the connecting rod is moved to one side far away from the adjacent fixed plate through the driving piece, and then the blocking piece is moved to the side far away from the adjacent fixed plate, so that the space between the two groups of blocking pieces and the spacing between the blocking piece and the adjacent fixed plate is changed.

If the distance between the two groups of barrier pieces is larger than the width of the vehicle, and the distance between the barrier pieces and the adjacent fixed plates is smaller than the width of the vehicle, a vehicle passing area is formed between the two groups of barrier pieces, and a construction maintenance area is formed between the barrier pieces and the adjacent fixed plates; if the distance between the two groups of the blocking pieces is smaller than the width of the vehicle, and the distance between the blocking piece and the fixing plate adjacent to the blocking piece is larger than the width of the vehicle, a construction maintenance area is formed between the two groups of the blocking pieces, and a vehicle passing area is formed between the blocking piece and the fixing plate adjacent to the blocking piece. The vehicle passing area can be used for vehicles to run through, the construction maintenance area can be used for workers to maintain the bridge floor, and the width of the vehicles can be set according to the width of common vehicles. Staff can be through the position of operation driving piece in order to adjust the piece that keeps off as required to change the bridge floor and can supply the current width and the position of vehicle, and need not to carry construction baffle from other places and reappear the field pavement, laborsaving convenience, operation convenience height.

Optionally, the driving piece is including installing in the servo motor of fixed plate and the drive gear who is connected with servo motor, drive gear can rotate under servo motor's drive, one side that the connecting rod is close to drive gear is provided with the transmission rack with drive gear intermeshing, the length direction of transmission rack is on a parallel with the direction of motion of connecting rod.

Through adopting above-mentioned technical scheme, when removing the partition piece, start servo motor for drive gear rotates along with servo motor's output shaft is synchronous, and then makes the transmission rack drive connecting rod to being close to or keeping away from rather than the one side removal of adjacent fixed plate, and workman's personnel need not manual pass during the removal and separate the piece, and degree of automation is high, convenient operation.

Optionally, the barrier comprises a partition plate, a plurality of railings detachably connected to the upper side of the partition plate, and handrails detachably connected to the upper sides of the railings, and the connecting rod is fixedly arranged on the partition plate.

By adopting the technical scheme, the connecting rod is arranged on the partition plate, so that when a vehicle passing area is formed between the barrier piece and the fixing plate close to the barrier piece, the connecting rod is not easy to block the vehicle from running to influence the traffic. The railing and the handrail are positioned on the upper side of the partition board, so that the function of separating the lanes is achieved, and the sequence of the vehicles running on the bridge floor is improved.

Optionally, the longitudinal section of the connecting rod is trapezoidal with the upper side being a short side and the lower side being a long side, the bottom surface of the connecting rod is attached to the bridge floor, and the end surfaces of the connecting rod, which are close to the vehicle entering and exiting directions, are inclined surfaces.

Through adopting above-mentioned technical scheme, can earlier contact with the inclined plane when the vehicle passes through the connecting rod, the inclined plane plays the effect of direction to the wheel of vehicle, has reduced the vibrations sense that the wheel produced when passing through the connecting rod, has improved passenger's comfort level in the car. In addition, the connecting rod can also slow down the running speed of the vehicle, the effect of controlling the speed of the vehicle is played, and the probability of traffic accidents on the bridge floor is reduced.

Optionally, a connecting block is fixed at the bottom end of the circumferential side wall of the handrail, an abdicating groove for the bottom of the handrail to extend into and a connecting groove for the connecting block to extend into are formed in the upper end face of the partition plate, and the depth of the connecting groove is smaller than that of the abdicating groove; offer the swivelling chute that communicates in the spread groove downside on the cell wall in groove of stepping down, the cross-section of swivelling chute is the arc and can supplies the connecting block to rotate and stretch into, can dismantle on the baffle and be connected with the fastener that is used for locking the connecting block in the swivelling chute.

Through adopting above-mentioned technical scheme, during the assembly railing, stretch into the groove of stepping down, the connecting block stretches into behind the spread groove with the bottom of railing earlier and rotates the groove, rotatory railing so that the connecting block rotates to separate with the spread groove along the spin groove again, utilizes the fastener to lock the connecting block in the spin groove at last to it is fixed with being connected of baffle to realize the railing. So set up, after fastener and baffle separation, the staff still need rotate the railing and align to making connecting block and spread groove, just can separate railing and baffle, the joint strength of railing and baffle is high. Because every railing all is independently installed on the baffle, only need to change a railing and need not to keep off the piece together with changing whole partition after single railing damages, the replacement cost is low.

Optionally, the lower terminal surface of bridge floor is provided with first layer board, the one end of first layer board surpasss the bridge floor, and when two sets of adjacent bridge unit spliced, the first layer board butt of one of them set of bridge unit bottom was at the bridge floor downside of another set of bridge unit, and the clearance intussuseption of bridge floor is filled with the first concrete piece that is located first layer board upside in two sets of bridge unit.

Through adopting above-mentioned technical scheme, after two sets of adjacent bridge units splice, first layer board is located the bridge floor clearance downside in two sets of bridge units, plays the effect of the first concrete piece of supplementary bearing for the concrete grout is difficult for dripping when filling the clearance to two bridge floors, helps improving the joint strength of two sets of bridge units.

Optionally, the bridge floor includes the base plate and is located the fly leaf of base plate both sides respectively, pier base is including being located the base under the base plate and fixing stand and two backup pads on the base, the fixed downside that sets up at the base plate of stand, two backup pads slide the downside that sets up the fly leaf respectively, can dismantle in the backup pad and be connected with the retainer that is used for fixing a position the fly leaf.

Through adopting above-mentioned technical scheme, fly leaf and backup pad sliding connection rather than fixed linking to each other, the staff can finely tune the interval of fly leaf and base plate as required when assembling the bridge floor to change the width of bridge floor, the size of bridge is variable, and application scope is wide.

Optionally, a second supporting plate is arranged on one end, close to the substrate, of the lower end surface of the movable plate, one end, far away from the movable plate, of the second supporting plate abuts against the lower side of the substrate, and a second concrete block located on the upper side of the second supporting plate is filled in a gap between the movable plate and the substrate.

Through adopting above-mentioned technical scheme, the second layer board plays the effect of supplementary bearing second concrete piece for the staff is difficult for the drippage to the concrete thick liquid that fly leaf and base plate clearance were filled, has strengthened the joint strength of fly leaf and base plate, has improved the overall stability of bridge floor.

If the width of the original bridge deck can not meet the current traffic requirement, the bridge deck needs to be widened. The traditional bridge deck widening mode is generally realized by dismantling and rebuilding the original bridge, so that the time and the labor are wasted, the construction cost is high, and the difficulty is high. When the bridge deck is widened in construction, the second concrete blocks can be cut off firstly to separate the movable plate from the base plate, then the retainer is taken out to unlock the movable plate, the movable plate is moved to one side far away from the base plate, and finally the second concrete blocks are filled into the gap between the movable plate and the base plate again, so that the old bridge is widened, building materials are low in investment, energy is saved, the environment is protected, the construction cost is low, and the difficulty is low.

Optionally, the side of the first supporting plate, which is far away from the bridge deck, and the side of the second supporting plate, which is far away from the movable plate, are both provided with extension grooves, and the groove walls of the extension grooves are provided with through holes through which bolts can penetrate.

By adopting the technical scheme, because the length of the second supporting plate is limited, if the length of the bridge deck to be widened is more than twice of the contact length of the second supporting plate and the substrate, the second supporting plate cannot be abutted against the substrate. The extension groove can stretch into with the extension piece of its adaptation this moment, and the through-hole can be used for penetrating with the bolt that extends a threaded connection to fix the extension piece on the second layer board, make the extension piece can with the base plate butt with the second concrete piece of the follow-up filling of bearing.

In a second aspect, the application provides a construction method of an environment-friendly bridge spliced by steel structures, which adopts the following technical scheme:

s1, mounting a pier seat and a bridge deck, fixing a base on a foundation of a bridge to be erected, connecting two movable plates above two supporting plates in a sliding mode respectively, enabling a second supporting plate to abut against the lower side of a base plate, locking the movable plates through a stopping piece, and filling a second concrete block in a gap between the movable plates and the base plate, so that the assembly and the positioning of the bridge deck are realized;

s2, installing a barrier piece, namely, firstly, extending the bottom of each handrail into the abdicating groove, extending the connecting block into the connecting groove, then rotating the handrails to enable the connecting block to extend into the rotating groove, and then fixing the connecting block in the rotating groove by using a fastening piece, so that the handrails are assembled on the partition boards, and then connecting the handrails to the tops of the handrails;

s3, assembling a guardrail component, namely arranging a fixed plate on the upper side of the bridge floor, penetrating a connecting rod fixed on a partition plate out of the fixed plate, installing a servo motor and a driving gear on the fixed plate, and enabling the driving gear to be meshed with a transmission rack fixed on the connecting rod, so that the connecting rod can drive the partition plate to move along the width direction of the bridge floor when the servo motor works;

s4, splicing the bridge units, horizontally arranging each group of bridge units along the length direction of the bridge deck, enabling the first supporting plate of one group of bridge units to be abutted against the lower portion of the bridge deck of the adjacent bridge unit, and finally filling a first concrete block in the gap between the two adjacent bridge decks.

In summary, the present application includes at least one of the following beneficial technical effects:

1. when the bridge floor is maintained, workers can drive the partition plates to horizontally move through the driving pieces, so that the distance between the two groups of the blocking pieces above the bridge floor, the distance between each blocking piece and the adjacent fixing plate are changed, the blocking pieces can replace the construction baffle plates to divide the space above the bridge floor into a vehicle passing area and a construction maintenance area, the workers do not need to carry the construction baffle plates from other places when the vehicle passing width is adjusted, and the convenience is high;

2. each handrail is independently and detachably connected to the partition plate, the whole barrier piece does not need to be replaced when a single handrail is damaged, the replacement cost is low, and the energy is saved and the environment is protected; when the handrail is assembled on the partition board, the handrail is not only locked by the fastening piece, but also blocked by the upper side groove wall of the rotary groove and cannot move upwards, and the connection strength of the handrail and the partition board is high;

3. the fly leaf slides with the backup pad and links to each other, can't satisfy the demand and need widen at original bridge floor width, and the staff can take out the retainer earlier, promotes the fly leaf to the one side of keeping away from the base plate again to increase bridge floor width, building materials drop into for a short time, construction cost is low.

Drawings

Fig. 1 is a schematic structural diagram of two groups of bridge units during splicing in the embodiment of the present application.

Fig. 2 is a schematic structural diagram of a bridge unit in an embodiment of the present application.

FIG. 3 is a schematic partial cross-sectional view highlighting a second pallet in an embodiment of the present application.

Fig. 4 is an enlarged schematic view at a in fig. 3.

FIG. 5 is a partially exploded view highlighting the spin basket in the embodiment of the present application.

Description of reference numerals: 1. a bridge unit; 2. pier seats; 21. a base; 22. a column; 23. a support plate; 231. a dovetail block; 232. a stopper; 3. a bridge deck; 31. a substrate; 32. a movable plate; 321. a dovetail groove; 322. a stop hole; 323. a second pallet; 33. a second concrete block; 34. a first pallet; 35. an extension groove; 351. a through hole; 36. an extension block; 361. a lengthening part; 362. an extension portion; 37. a first concrete block; 4. a guardrail assembly; 41. a fixing plate; 411. a first mounting plate; 412. a second mounting plate; 42. a barrier; 421. a partition plate; 422. a railing; 423. a handrail; 424. a yielding groove; 425. connecting grooves; 426. connecting blocks; 427. a rotating tank; 428. a fastener; 43. a connecting rod; 431. a bevel; 432. a drive rack; 5. a drive member; 51. a servo motor; 52. a linkage rod; 53. the gears are driven.

Detailed Description

The present application is described in further detail below with reference to figures 1-5.

The embodiment of the application discloses environment-friendly bridge of steel construction concatenation. Referring to fig. 1, the environment-friendly bridge spliced by steel structures includes a plurality of sets of bridge units 1 spliced and connected in a horizontal direction, the number of the bridge units 1 can be set according to factors such as river span of a construction site and length of a single set of the bridge units 1, and the embodiment takes two sets as an example to explain specific structures of the bridge units 1.

Referring to fig. 2 and 3, the bridge unit 1 includes a pier seat 2, a bridge deck 3 disposed on the upper side of the pier seat 2, and two sets of guardrail assemblies 4 disposed above the bridge deck 3, the two sets of bridge units 1 are distributed along the length direction of the bridge deck 3, and the two sets of guardrail assemblies 4 are distributed along the width direction of the bridge deck 3. Pier base 2 is used for supporting bridge floor 3 in order to improve the bearing capacity of bridge floor 3, and bridge floor 3 can supply the vehicle to travel through in order to stride over obstacles such as rivers, valley, and guardrail subassembly 4 plays the effect that separates the fender protection for the vehicle is gone the in-process and is difficult for rushing out bridge floor 3 and fall.

Referring to fig. 2 and 3, the pier base 2 includes a base 21, a plurality of columns 22 fixedly disposed on the upper side of the base 21, and two support plates 23 fixedly disposed on the upper side of the base 21, wherein the columns 22 are arranged at equal intervals along the length direction of the base 21, the two support plates 23 are respectively disposed at two ends of the base 21 along the width direction thereof, and the two support plates 23 are respectively disposed at two opposite sides of the columns 22. In the present embodiment, the base 21 and the support plate 23 are made of steel, and the column 22 is cast with concrete.

Referring to fig. 2 and 3, the bridge deck 3 includes a base plate 31 and two movable plates 32 respectively disposed on two sides of the base plate 31, a plurality of columns 22 in the same bridge unit 1 are all fixed on a lower side of the base plate 31, a lower end surface of the movable plate 32 is provided with a horizontally extending dovetail groove 321, an extending direction of the dovetail groove 321 is parallel to a width direction of the movable plate 32, and one end of the dovetail groove 321, which is far away from the base plate 31, is open and one end of the dovetail groove, which is close to the base plate 31, is closed. A dovetail block 231 is fixed on the upper side of the supporting plate 23, and the dovetail block 231 is slidably arranged in a dovetail groove 321 adjacent to the dovetail block, so that the distance between the movable plate 32 and the base plate 31 is adjustable, and the width of the bridge deck 3 is variable.

Referring to fig. 2 and 3, the supporting plate 23 is detachably connected with a stopper 232, the stopper 232 in this embodiment includes a stopper bolt in threaded connection with the dovetail block 231, a groove wall of the dovetail groove 321 is provided with a horizontally extending stopper hole 322, an extending direction of the stopper hole 322 is parallel to an extending direction of the dovetail groove 321, and the stopper hole 322 is penetrated by the stopper bolt, so that the stopper bolt can be in threaded connection with the dovetail block 231 to position the movable plate 32.

Referring to fig. 1 and 3, a second supporting plate 323 is fixedly disposed on a lower end surface of the movable plate 32, the second supporting plate 323 is located at an end of the movable plate 32 close to the substrate 31, and an end of the second supporting plate 323 away from the movable plate 32 abuts directly below the substrate 31. A second concrete block 33 is fixed in a gap between the movable plate 32 and the base plate 31, and the second concrete block 33 is formed by casting concrete slurry and is positioned right above the second supporting plate 323, so that the connection strength between the movable plate 32 and the base plate 31 is enhanced, and the overall stability of the bridge deck 3 is improved.

Referring to fig. 1 and 2, a first supporting plate 34 is fixed on the lower side of the bridge deck 3, the first supporting plate 34 is provided with three sections and is respectively fixed on the lower end surfaces of the base plate 31 and the two movable plates 32, and the same side ends of the three first supporting plates 34 all exceed the bridge deck 3. When two adjacent groups of bridge units 1 are spliced, the first supporting plate 34 of one group of bridge units 1 abuts against the lower side of the bridge deck 3 of the other group of bridge units 1. A first concrete block 37 is fixed in a gap between the bridge surfaces 3 of two adjacent groups of bridge units 1, and the first concrete block 37 is formed by pouring concrete slurry and is positioned right above the first supporting plate 34.

Referring to fig. 2 and 4, the side of the first supporting plate 34 away from the bridge deck 3 and the side of the second supporting plate 323 away from the movable plate 32 are both provided with extension grooves 35, and the lower side wall of each extension groove 35 is provided with a through hole 351. If the sizes of the first pallet 34 and the second pallet 323 which are processed in advance are different, the first pallet 34 is difficult to be abutted to the lower side of the bridge floor 3 of the other bridge unit 1, and the second pallet 323 is difficult to be abutted to the lower side of the base plate 31; or when the bridge deck 3 is widened, the length of the second support plate 323 cannot be abutted against the base plate 31, and a worker can slide the extension block 36 into the extension groove 35, wherein the extension block 36 comprises an integrally formed extension part 361 and an extension part 362, the upper end surface of the extension part 361 is flush with the first support plate 34 or the second support plate 323, and the extension part 362 is slidably arranged in the extension groove 35. The worker may screw a bolt through the through-hole 351 and then the extension block 36 to position the extension block 36 so that the extension block 36 can abut the deck 3 or the base plate 31.

Referring to fig. 2, the guardrail assembly 4 includes a fixed plate 41, a barrier 42, and a plurality of connecting rods 43 connected between the fixed plate 41 and the barrier 42, wherein the fixed plate 41 and the barrier 42 are both located above the bridge floor 3, the fixed plate 41 is fixedly disposed at an end of the bridge floor 3, and the barrier 42 is slidably disposed at a side of the fixed plate 41 close to a center side of the bridge floor 3. When the bridge deck 3 is normally used, the two sets of guardrail components 4 are respectively arranged at the two ends of the bridge deck 3 along the width direction of the guardrail components, and the function of blocking the vehicle from rushing out of the bridge deck 3 is achieved.

Referring to fig. 2 and 5, the barrier 42 includes a partition 421, a plurality of balustrades 422 connected to the partition 421, and a handrail 423 detachably connected to the plurality of balustrades 422, where the handrail 423 in this embodiment can be detachably connected to each balustrade 422 by a bolt, a length direction of the partition 421 is parallel to a length direction of the bridge deck 3, and the plurality of balustrades 422 are distributed along the length direction of the partition 421. The up end of baffle 421 is seted up and is equallyd divide and connect groove 424 and the connecting groove 425 that communicate each other with railing 422 quantity, and railing 422 all is circular with the cross section of dividing the groove 424, and the bottom that divides the groove 424 to supply railing 422 stretches into, and the degree of depth of connecting groove 425 is less than the degree of depth of dividing the groove 424. The bottom end of the circumferential side wall of the rail 422 is fixed with a connecting block 426, and the connecting groove 425 can be used for the connecting block 426 to move in.

Referring to fig. 5, a circumferential groove wall of the abdicating groove 424 is provided with a rotating groove 427 communicated with the connecting groove 425, the cross section of the rotating groove 427 is arc-shaped and is formed by rotary cutting along a central axis of the abdicating groove 424, and a maximum distance between the rotating groove 427 and the abdicating groove 424 is greater than a maximum distance between the connecting groove 425 and the abdicating groove 424, so that the connecting block 426 can extend into the rotating groove 427 and rotate along the rotating groove 427 after passing through the connecting groove 425, thereby preventing the handrail 422 from moving upwards relative to the partition 421. For the convenience of the manufacturing process, the relief groove 424 and the rotation groove 427 in this embodiment are provided to communicate with the bottom surface of the partition 421. A fastening member 428 is detachably coupled to the partition 421, and the fastening member 428 includes a fastening bolt inserted through a wall of the upper side of the rotating groove 427 and threadedly coupled to the connecting block 426 for locking the connecting block 426 in the rotating groove 427.

Referring to fig. 2, one end of the connecting rod 43 is fixed to a side of the partition 421 close to the fixing plate 41, and the other end penetrates through the fixing plate 41, specifically, the connecting rod 43 has a trapezoidal longitudinal section, and the upper side of the trapezoid is a short side and the lower side of the trapezoid is a long side. The end faces of the connecting rods 43 close to the vehicle entering and exiting directions are all inclined faces 431, and the bottom faces of the connecting rods 43 are attached to the bridge floor 3, so that the vehicles can conveniently pass through the connecting rods 43.

Referring to fig. 2, a driving member 5 is mounted on the fixed plate 41 for driving the link 43 to move toward or away from the fixed plate 41. The driving part 5 comprises a servo motor 51, a linkage rod 52 and driving gears 53 with the same number as the connecting rods 43, a first mounting plate 411 and a second mounting plate 412 are fixed on one side of the fixing plate 41 far away from the partition 421, the servo motor 51 is arranged on the first mounting plate 411, an output shaft of the servo motor is fixedly connected with the linkage rod 52, one end of the linkage rod 52 far away from the servo motor 51 is rotatably connected onto the second mounting plate 412, each driving gear 53 is fixed on the circumferential side wall of the linkage rod 52, and each driving gear 53 is respectively positioned right above each connecting rod 43, so that the servo motor 51 can drive each driving gear 53 to synchronously rotate when in work.

Referring to fig. 2 and 3, a driving rack 432 engaged with the adjacent driving gear 53 is fixed on the upper side of each connecting rod 43, the length direction of the driving rack 432 is parallel to the length direction of the connecting rod 43, and when the driving gear 53 rotates, the driving rack 432 can make the connecting rod 43 drive the partition 421 to move toward or away from one side of the fixed plate 41, so as to change the distance between two sets of the partitions 42 and the distance between the partition 42 and the adjacent fixed plate 41.

The implementation principle of the environment-friendly bridge spliced by the steel structure is as follows: when the bridge deck 3 is normally used, the two sets of blocking pieces 42 are respectively positioned at the two ends of the bridge deck 3 in the width direction, and vehicles can pass through the space between the two sets of blocking pieces 42 above the bridge deck 3. When the bridge deck 3 is damaged and needs maintenance, the servo motor 51 is started to drive the linkage rod 52 to rotate, so that the driving gear 53 rotates and the driving rack 432 and the connecting rod 43 move to the side far away from the fixed plate 41, and the partition 421 drives the handrail 422 and the handrail 423 to move horizontally. At this time, the barrier 42 can divide the area above the bridge deck 3 into a vehicle passing area and a construction maintenance area, so that the trouble of installing and carrying construction barriers by workers is eliminated, and the convenience of adjusting the passing width of the bridge deck 3 is improved.

The embodiment of the application also discloses a construction method of the environment-friendly bridge spliced by the steel structures, which comprises the following steps:

s1, installing the pier seat 2 and the bridge deck 3, fixing the base 21 on a foundation of a bridge to be erected, then connecting the two movable plates 32 above the two supporting plates 23 in a sliding manner respectively, enabling the second supporting plate 323 to abut against the lower side of the base plate 31, locking the movable plates 32 through the stopping pieces 232, and then filling the second concrete blocks 33 in the gap between the movable plates 32 and the base plate 31, so that the assembly and positioning of the bridge deck 3 are realized;

s2, installing the barrier 42, first extending the bottom of the balustrade 422 into the offset groove 424, extending the connecting block 426 into the connecting groove 425, then rotating the balustrade 422 to make the connecting block 426 extend into the rotating groove 427, then fixing the connecting block 426 in the rotating groove 427 by the fastening member 428, thereby assembling the balustrade 422 on the partition 421, and then connecting the handrail 423 on the top of each balustrade 422;

s3, assembling the guardrail assembly 4, arranging the fixing plate 41 on the upper side of the bridge floor 3, penetrating the connecting rod 43 fixed on the partition 421 out of the fixing plate 41, installing the servo motor 51 and the driving gear 53 on the fixing plate 41, and enabling the driving gear 53 to be meshed with the transmission rack 432 fixed on the connecting rod 43, so that the connecting rod 43 can drive the partition 421 to move along the width direction of the bridge floor 3 when the servo motor 51 works;

s4, splicing the bridge units 1, horizontally arranging each set of bridge units 1 along the length direction of the bridge deck 3, enabling the first supporting plate 34 of one set of bridge unit 1 to abut against the lower side of the bridge deck 3 of the adjacent bridge unit 1, and finally filling the gap between the two adjacent bridge decks 3 with the first concrete block 37.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides an environment-friendly bridge of steel construction concatenation which characterized in that: the bridge unit comprises a plurality of groups of bridge units (1) which are spliced and connected along the horizontal direction, wherein each bridge unit (1) comprises a pier seat (2), a bridge deck (3) which is arranged above the pier seat (2) and used for allowing vehicles to pass through and two groups of guardrail assemblies (4) which are arranged on the bridge deck (3), and the two groups of guardrail assemblies (4) are distributed along the width direction of the bridge deck (3); the guardrail assembly (4) comprises a fixing plate (41) arranged on the bridge floor (3), a blocking piece (42) located on the side, close to the center of the bridge floor (3), of the fixing plate (41) and at least one connecting rod (43) arranged between the fixing plate (41) and the blocking piece (42), one end of the connecting rod (43) is fixed on the blocking piece (42), the other end of the connecting rod (43) penetrates through the fixing plate (41), and a driving piece (5) used for driving the connecting rod (43) to move towards or away from one side of the fixing plate (41) is arranged on the fixing plate (41).

2. The environment-friendly bridge spliced by steel structures according to claim 1, is characterized in that: the driving piece (5) comprises a servo motor (51) installed on the fixing plate (41) and a driving gear (53) connected with the servo motor (51), the driving gear (53) can rotate under the driving of the servo motor (51), one side, close to the driving gear (53), of the connecting rod (43) is provided with a transmission rack (432) meshed with the driving gear (53), and the length direction of the transmission rack (432) is parallel to the movement direction of the connecting rod (43).

3. The environment-friendly bridge spliced by steel structures according to claim 1, is characterized in that: the barrier (42) comprises a partition board (421), a plurality of railings (422) detachably connected to the upper side of the partition board (421) and handrails (423) detachably connected to the upper sides of the railings (422), and the connecting rod (43) is fixedly arranged on the partition board (421).

4. The environment-friendly bridge spliced by steel structures as claimed in claim 3, wherein: the longitudinal section of the connecting rod (43) is in a trapezoid shape with the upper side being a short side and the lower side being a long side, the bottom surface of the connecting rod (43) is attached to the bridge floor (3), and the end surfaces of the connecting rod (43) close to the vehicle entering and exiting directions are all inclined surfaces (431).

5. The environment-friendly bridge spliced by steel structures as claimed in claim 3, wherein: a connecting block (426) is fixed at the bottom end of the circumferential side wall of the handrail (422), an abdicating groove (424) for the bottom of the handrail (422) to extend into and a connecting groove (425) for the connecting block (426) to extend into are formed in the upper end face of the partition plate (421), and the depth of the connecting groove (425) is smaller than that of the abdicating groove (424); the groove wall of the abdicating groove (424) is provided with a rotating groove (427) communicated with the lower side of the connecting groove (425), the cross section of the rotating groove (427) is arc-shaped and can be used for the connecting block (426) to rotate and extend into, and the partition plate (421) is detachably connected with a fastener (428) used for locking the connecting block (426) in the rotating groove (427).

6. The environment-friendly bridge spliced by steel structures according to claim 1, is characterized in that: the lower terminal surface of bridge floor (3) is provided with first layer board (34), the one end of first layer board (34) surpasss bridge floor (3), and when two sets of adjacent bridge unit (1) splice, wherein first layer board (34) butt of a set of bridge unit (1) bottom is at bridge floor (3) downside of another set of bridge unit (1), and the clearance intussuseption of bridge floor (3) is filled with first concrete piece (37) that are located first layer board (34) upside in two sets of bridge unit (1).

7. The environment-friendly bridge spliced by steel structures as claimed in claim 6, wherein: bridge floor (3) are including base plate (31) and fly leaf (32) that are located base plate (31) both sides respectively, pier seat (2) are including base (21) that are located under base plate (31) and fixing stand (22) and two backup pads (23) on base (21), the fixed downside that sets up in base plate (31) of stand (22), and two backup pads (23) slide the downside that sets up fly leaf (32) respectively, can dismantle on backup pad (23) and be connected with stopper (232) that are used for fixing a position fly leaf (32).

8. The environment-friendly bridge spliced by steel structures as claimed in claim 7, wherein: a second supporting plate (323) is arranged on one end, close to the base plate (31), of the lower end face of the movable plate (32), one end, far away from the movable plate (32), of the second supporting plate (323) abuts against the lower side of the base plate (31), and a second concrete block (33) located on the upper side of the second supporting plate (323) is filled in a gap between the movable plate (32) and the base plate (31).

9. The environment-friendly bridge spliced by steel structures as claimed in claim 8, wherein: the side that the bridge floor (3) was kept away from in first layer board (34), second layer board (323) are kept away from fly leaf (32) all seted up extending groove (35), set up through-hole (351) that can supply the bolt to penetrate on the cell wall of extending groove (35).

10. The construction method of the environment-friendly bridge spliced by the steel structure according to any one of claims 1 to 9, comprising the steps of:

s1, installing a pier seat (2) and a bridge deck (3), fixing a base (21) on a foundation of a bridge to be erected, respectively connecting two movable plates (32) above two supporting plates (23) in a sliding manner, enabling a second supporting plate (323) to abut against the lower side of a base plate (31), locking the movable plates (32) through a stop piece (232), and filling a second concrete block (33) in a gap between the movable plates (32) and the base plate (31) to realize the assembling and positioning of the bridge deck (3);

s2, installing a barrier (42), firstly, extending the bottom of a railing (422) into a yielding groove (424), extending a connecting block (426) into a connecting groove (425), then rotating the railing (422) to enable the connecting block (426) to extend into a rotating groove (427), and then fixing the connecting block (426) in the rotating groove (427) by using a fastener (428), thereby assembling the railing (422) on the partition board (421), and then connecting handrails (423) on the top of each railing (422);

s3, assembling a guardrail component (4), arranging a fixing plate (41) on the upper side of the bridge floor (3), penetrating a connecting rod (43) fixed on a partition plate (421) out of the fixing plate (41), installing a servo motor (51) and a driving gear (53) on the fixing plate (41), and enabling the driving gear (53) to be meshed with a transmission rack (432) fixed on the connecting rod (43), so that the connecting rod (43) can drive the partition plate (421) to move along the width direction of the bridge floor (3) when the servo motor (51) works;

s4, splicing the bridge units (1), horizontally arranging each group of bridge units (1) along the length direction of the bridge deck (3), enabling the first supporting plate (34) of one group of bridge units (1) to be abutted against the lower portion of the bridge deck (3) of the adjacent bridge unit (1), and finally filling the gap between the two adjacent bridge decks (3) with a first concrete block (37).