Steel-concrete composite beam bridge prefabricated bridge deck pouring and vibrating integrated device

Abstract

The application discloses a prefabricated bridge deck pouring and vibrating integrated device for a steel-concrete composite beam bridge, which comprises a supporting system, a combined steel formwork system and a vibrating and screeding system. The supporting system comprises a plurality of concrete foundation blocks, and the concrete foundation blocks are fixedly provided with supporting beams. The combined steel formwork system comprises block-combined and assembled long-side steel side forms, integral short-side steel side forms and a steel plate bottom form. The steel plate bottom form is laid on the supporting beams, the integral short-side steel side forms and the steel plate bottom form are clamped between the block-combined and assembled long-side steel side forms on the two sides, and the height of the block-combined and assembled long-side steel side forms is higher than that of the integral short-side steel side forms. The vibrating and screeding system comprises attached vibrators arranged in a matrix mode at the bottom of the steel plate bottom form and a self-walking vibrating and screeding integrated vibrating mechanism above the combined steel formwork system, wherein the self-walking vibrating and screeding integrated vibrating mechanism takes the block-combined and assembled long-side steel side forms as a walking track.

Description

Technical Field

[0001] This invention relates to the field of precast component construction technology for bridge engineering, specifically to an integrated device for casting and vibrating precast bridge decks of steel-concrete composite beam bridges. Background Technology

[0002] Steel-concrete composite girder bridges are a type of bridge structure where the superstructure is composed of open-type U-shaped steel box girders and reinforced concrete bridge decks. They feature lighter overall weight, larger spans, faster construction, and relatively lower costs, making them suitable for bridges crossing large urban intersections, highways, railways, and rivers. There are two common construction methods for the reinforced concrete bridge decks on top of the steel box girders: one is pure cast-in-place concrete construction, and the other is prefabricating segmented bridge deck components, then hoisting and installing the segments, and finally connecting the prefabricated bridge deck segments to the steel box girder through post-cast concrete strips to jointly bear the vehicle loads. Currently, steel-concrete composite girder bridge structures increasingly adopt the prefabricated bridge deck + steel box girder structure to minimize the construction period and accelerate bridge construction progress.

[0003] The traditional construction process for precast reinforced concrete bridge decks is as follows:

[0004] Precast yard site selection → ground hardening → long strip concrete foundation beams → I-beam support beams → custom steel formwork and installation → tying of precast slab reinforcement bars → pouring concrete and manually vibrating to compact → curing and transporting to the storage area to await hoisting and installation.

[0005] However, the aforementioned traditional construction techniques have the following shortcomings:

[0006] 1. The installation of precast bridge deck I-beam support beams can only be carried out after the site hardening and long strip concrete foundation beams are completed, which has a long waiting period and is not conducive to projects with tight schedules.

[0007] 2. The reusability of full-size custom-made steel formwork is low, and secondary modification and reuse of the formwork results in varying degrees of material waste, making it uneconomical overall. Furthermore, the large longitudinal length of custom-made full-size formwork often leads to inconvenience in handling and storage, resulting in higher usage costs.

[0008] 3. Precast bridge decks are relatively thick but much smaller in width, making them thin-walled structures. This necessitates extremely uniform and dense compaction of the concrete after pouring to ensure the bridge deck's design load-bearing capacity. However, traditional manual vibrator insertion methods, due to the dense reinforcing steel frame, not only fail to achieve uniform compaction but also frequently result in over-vibration, under-vibration, and low construction efficiency, leading to frequent human-caused construction quality defects. Summary of the Invention

[0009] The purpose of this invention is to provide an integrated device for casting and vibrating precast bridge decks of steel-concrete composite beam bridges, so as to solve the problems mentioned in the background art.

[0010] To achieve the above objectives, the present invention provides an integrated vibratory compaction device for precast bridge deck casting of steel-concrete composite beam bridges, comprising: a support system, a combined steel formwork system, and a vibratory compaction and leveling system; wherein, the support system includes multiple concrete foundation blocks, on which support beams are fixedly mounted, and the two sides of the support beams are fixed by multiple sets of support beam fixing blocks; the combined steel formwork system includes a segmented, assembled long-side steel side formwork, an integrated short-side steel side formwork, and a steel plate bottom formwork, the steel plate bottom formwork being laid on the support beams, and the integrated short-side steel side formwork and the steel plate bottom formwork being sandwiched between... Between the two sides of the segmented and assembled long side steel side mold, the height of the segmented and assembled long side steel side mold is higher than the height of the integrated short side steel side mold, and the integrated short side steel side mold and the segmented and assembled long side steel side mold are fixedly connected by long and short side mold connecting bolts; the vibration and leveling system includes attached vibrators arranged in a matrix at the bottom of the steel plate bottom mold and a self-propelled vibration and leveling integrated vibration mechanism located above the combined steel formwork system, wherein the self-propelled vibration and leveling integrated vibration mechanism uses the segmented and assembled long side steel side mold as its running track.

[0011] In a preferred embodiment, the modular assembly type long side steel mold is composed of multiple long side steel molds assembled along the length direction. Adjacent long side steel molds are fixedly connected by long side steel mold splicing bolts. The modular assembly type long side steel mold is higher than the integrated short side steel mold by -cm to form a closed space above the precast bridge deck. On both sides below the bottom mold of the steel plate, multiple sets of tie bolt fixing plates are symmetrically arranged at the bottom of the modular assembly type long side steel mold, and tie bolts are inserted through the tie bolt fixing plates.

[0012] In a preferred embodiment, the modular long-side steel side mold and the integrated short-side steel side mold are provided with multiple pre-reserved openings for threading reinforcing bars in the vertical direction, which are used to thread the U-shaped reinforcing bars of the precast bridge deck. The pre-reserved openings for threading reinforcing bars are closed elongated oval openings. A reinforcing bar pre-reserved opening baffle is provided on the outside of each pre-reserved opening. The left and right sides of the reinforcing bar pre-reserved opening baffle are locked to the outside of the pre-reserved opening of the side mold by the baffle buckle plate and the locking nut. The upper and lower sides of the reinforcing bar pre-reserved opening baffle are provided with arc grooves for threading the U-shaped reinforcing bars of the precast bridge deck.

[0013] In a preferred embodiment, the self-propelled integrated vibration and leveling mechanism includes a vibration beam that can vibrate up and down. The vibration beam is perpendicular to the modular, assembled long-side steel side mold. The vibration beam includes a U-shaped steel plate beam with an upward opening. The bottom of the U-shaped steel plate beam is fixed with two rows of multiple deflectable, insertable small vibration rods.

[0014] In a preferred embodiment, stiffening plates are fixed between the two side plates of the U-shaped steel plate beam, multiple small vibrators are fixed inside the U-shaped steel plate beam, and a horizontal support frame for the vibrating beam is provided above the vibrating beam.

[0015] In a preferred embodiment, the horizontal support frame of the vibrating beam includes a support hanger beam located directly above and parallel to the vibrating beam. Two vibrating beam hangers are vertically inserted through the support hanger beam, and the lower ends of the vibrating beam hangers are connected to the vibrating beam.

[0016] In a preferred embodiment, the vibrating beam hanger includes an upper screw rod, which passes through the supporting hanger beam. The lower end of the upper screw rod is threaded into the lower connecting rod of the vibrating beam hanger. The vertical height of the vibrating beam is adjusted by adjusting the position of the upper screw rod in the lower connecting rod. The bottom of the lower connecting rod is fixedly connected to the upper surface of the horizontal part of the U-shaped steel plate beam. Vibration damping springs are provided on both the upper and lower sides of the supporting hanger beam.

[0017] In a preferred embodiment, the self-propelled integrated vibratory tamping and leveling mechanism further includes multiple parallel hydraulically adjustable scraper support beams, which are parallel to the segmented and assembled long-side steel side molds. Symmetrically arranged below both ends of the hydraulically adjustable scraper support beams are deflectable hydraulically adjustable scrapers, which are perpendicular to the multiple hydraulically adjustable scraper support beams and are rotatably connected to the multiple hydraulically adjustable scraper support beams respectively.

[0018] In a preferred embodiment, the bottom of the two horizontal support beams of the vibrating beam located on both sides of the support hanger beam in the horizontal support frame of the vibrating beam is symmetrically provided with inverted U-shaped vertical support frames. The inverted U-shaped vertical support frames are provided with integrated axle and wheel traveling wheels. The integrated axle and wheel traveling wheels located at both ends of the horizontal support beam of the vibrating beam are respectively set on the top of the segmented assembled long side steel side mold on both sides and can travel along the segmented assembled long side steel side mold.

[0019] In a preferred embodiment, a motor support block is fixed to the top of the horizontal support beam of the vibrating beam, and a self-propelled motor is fixed to the top of the motor support block. The self-propelled motor drives the integrated axle wheel to rotate through a transmission belt.

[0020] Compared with the prior art, the beneficial effects of the present invention are:

[0021] 1. The support system of this invention, by setting up concrete foundation blocks and support beams, allows for the direct pouring or embedding of pre-prefabricated concrete foundation blocks within a selected prefabrication site without the need for site hardening. This significantly shortens the overall construction cycle of prefabricated bridge deck production compared to traditional methods. Furthermore, the absence of ground hardening under the prefabricated slab formwork reduces the area of ​​hardened concrete and the size of the foundation strips, thereby greatly reducing the initial preparation and construction costs for the bridge deck prefabrication site.

[0022] 2. The modular steel formwork system of this invention includes segmented modular long-side steel side molds, integrated short-side steel side molds, and steel plate bottom molds. It is assembled by sandwiching the integrated short-side steel side molds and steel plate bottom molds between the segmented modular long-side steel side molds on both sides. Compared to traditional custom-made precast bridge deck long-side side molds (which are usually longer), the segmented modular long-side steel side molds improve the efficiency of formwork use, reduce unnecessary material waste, and facilitate transportation and storage. By adding or removing splicing blocks, it can be adapted to different design lengths of precast bridge deck long-side dimensions, resulting in a high reusability rate. The height of the segmented modular long-side steel side molds is higher than that of the integrated short-side steel side molds. This is to create a relatively enclosed space above the precast bridge deck, facilitating movement of the vibratory leveling system and preventing excess concrete from overflowing, thus avoiding concrete waste during operation. The use of integrated short-side steel side molds is due to the fact that the short side length of precast bridge decks is often much smaller than the long side length, and the integrated steel side molds have greater overall rigidity, which can provide stable support for the long side molds and ensure the dimensions and shape of the corners of the precast bridge decks.

[0023] 3. The vibration and leveling system of this invention includes a matrix arrangement of small attached vibrators under the steel plate bottom formwork and a self-propelled integrated vibration and leveling mechanism above the combined steel formwork system. This self-propelled integrated vibration and leveling mechanism uses a segmented, assembled long-side steel side formwork as its travel track. During construction, it eliminates the process defects caused by manually inserting vibrators after concrete pouring of precast bridge decks, ensuring the required density and uniformity of concrete pouring for bridge decks and solving quality defects caused by human factors. The matrix arrangement of attached vibrators under the steel plate bottom formwork ensures uniform vibration of the concrete poured at the bottom of the precast bridge deck, causing tiny air bubbles in the lower concrete to rise and be discharged to the top surface of the precast bridge deck through uniform vibration.

[0024] 4. This invention, by setting up a vibrating beam that can vibrate up and down, and by setting up deflectable hydraulically adjustable scrapers on the front and rear sides of the vibrating beam, can achieve the work of uniformly vibrating and leveling the upper part of the precast bridge deck after the concrete on the top surface of the precast bridge deck is poured. At the same time, the double rows of multiple deflectable penetrating small vibrating rods under the vibrating beam can evenly transmit the vibration generated by the vibrating beam to the interior of the concrete poured in the precast bridge deck. Together with the attached vibrators arranged in a matrix at the bottom, they can quickly and uniformly vibrate the poured concrete, thus completely replacing manual vibration work and eliminating the quality defects caused by manual vibration work. Attached Figure Description

[0025] Figure 1 This is a front view schematic diagram of the integrated vibratory pouring device for precast bridge deck of steel-concrete composite beam bridge according to the present invention.

[0026] Figure 2 This is a side view schematic diagram of the integrated vibratory pouring device for precast bridge deck of steel-concrete composite beam bridge according to the present invention.

[0027] Figure 3 This is a schematic front cross-sectional view of the self-propelled integrated vibratory tamping and leveling mechanism of the present invention.

[0028] Figure 4 This is a side cross-sectional schematic diagram of the self-propelled integrated vibratory compaction and leveling mechanism of the present invention.

[0029] Figure 5 A three-dimensional schematic diagram of the vibratory beam and vibratory beam hanger of the present invention;

[0030] Figure 6 This is a schematic plan view of the vibrating beam and the vibrating beam hanger of the present invention;

[0031] Figure 7 This is a top view of the arrangement of the horizontal support frame of the vibrating beam and the hydraulically adjustable scraper support beam of the present invention.

[0032] Figure 8 This is a front view of the support system and combined steel formwork system of the present invention;

[0033] Figure 9 This is a top view of the support system and combined steel formwork system of the present invention;

[0034] Figure 10 This is a schematic diagram showing the pre-reserved opening for the reinforcing bars of the segmented and assembled long-side steel side formwork of the present invention;

[0035] Figure 11 This is a schematic diagram showing the location of the side mold anti-expansion tie rod of the present invention;

[0036] Figure 12 This is a front view schematic diagram of the side mold anti-expansion tie rod of the present invention;

[0037] Figure 13 This is a top view of the side mold anti-expansion tie rod of the present invention. Detailed Implementation

[0038] The technical solutions in the embodiments of the present invention will be clearly and completely described below. All other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of the present invention.

[0039] Example 1

[0040] like Figure 1-13 The preferred embodiment of the present invention provides an integrated vibratory compaction device for precast bridge deck pouring of steel-concrete composite beam bridges, comprising: a support system, a combined steel formwork system, and a vibratory compaction and leveling system.

[0041] The support system includes multiple concrete foundation blocks 1, with support beams 2 fixedly mounted on each foundation block 1. The support beams 2 are secured on both sides by multiple sets of support beam fixing blocks 3. The support beams 2 are I-beams. By using the concrete foundation blocks 1 and support beams 2, the concrete foundation blocks can be poured or pre-fabricated concrete foundation blocks can be embedded directly within the selected prefabrication site without the need for site hardening. This shortens the overall construction cycle of prefabricated bridge deck production compared to traditional methods. Furthermore, the ground under the prefabricated slab formwork does not need hardening, reducing the area of ​​hardened concrete and the size of the foundation strips, significantly lowering the initial preparation and construction costs for the bridge deck prefabrication site.

[0042] The modular steel formwork system includes segmented, assembled long-side steel side molds 4, integrated short-side steel side molds 8, and a steel plate bottom mold 9. The steel plate bottom mold 9 is laid on the support beam 2. The integrated short-side steel side molds 8 and the steel plate bottom mold 9 are sandwiched between the segmented, assembled long-side steel side molds 4 on both sides. The height of the segmented, assembled long-side steel side molds 4 is higher than the height of the integrated short-side steel side molds 8, and the integrated short-side steel side molds 8 and the segmented, assembled long-side steel side molds 4 are fixedly connected by long and short side mold connecting bolts 5. This invention employs an integrated short-side steel side mold and a steel plate bottom mold sandwiched between two segmented, modular long-side steel side molds. Compared to traditional custom-made precast bridge deck long-side molds (which are typically longer), the segmented, modular long-side steel side molds improve template utilization efficiency, reduce unnecessary material waste, and facilitate transportation and storage. By adding or removing splicing blocks, they can be adapted to different design lengths of precast bridge deck long-side dimensions, resulting in a high reusability rate. The integrated short-side steel side mold is used because the short side length of precast bridge decks is often much smaller than the long side length, and the integrated steel side mold has greater overall rigidity, providing stable support for the long-side molds and ensuring the dimensions and alignment of the precast bridge deck corners. The height of the segmented, modular long-side steel side mold is higher than that of the integrated short-side steel side mold. This is to create a relatively enclosed space above the precast bridge deck, facilitating movement of the vibratory leveling system and preventing excess concrete from spilling out, thus avoiding concrete waste during operation.

[0043] The steel plate bottom mold of this invention uses a thickened steel plate bottom mold with a thickness of 1-1.5cm. Although this increases the amount of material used to a certain extent, it has the characteristic of stronger resistance to deformation under external force compared to its planar geometric dimensions. It can prevent the upward arching that occurs when the lower tie bolts are tightened after the long side mold is installed as a whole. It indirectly improves the tightness between the bottom mold and the long side mold, and effectively prevents the serious leakage of grout at the corners and corners that often occurs during the pouring and vibration of concrete in precast bridge decks, which seriously damages the overall compactness of the concrete pouring.

[0044] The vibration and leveling system includes attached vibrators 7 arranged in a matrix at the bottom of the steel plate bottom mold 4 and a self-propelled integrated vibration and leveling mechanism located above the combined steel formwork system. The self-propelled integrated vibration and leveling mechanism uses the segmented and assembled long-side steel side mold 4 as its travel track. The attached vibrators arranged in a matrix at the bottom of the steel plate bottom mold 4 ensure that the concrete poured at the bottom of the precast bridge deck is uniformly vibrated, causing tiny air bubbles in the lower layer of concrete to rise to the top surface of the precast bridge deck through uniform vibration.

[0045] In a preferred embodiment, the self-propelled integrated vibratory compaction and leveling mechanism includes a vibratory beam 23 capable of vertical vibration. The vibratory beam 23 is perpendicular to the modular, assembled long-side steel side mold 4. The vibratory beam 23 includes an upward-opening U-shaped steel plate beam. Multiple deflectable, insertable small vibratory rods 25 are fixed to the bottom of the U-shaped steel plate beam in two rows. The insertable small vibratory rods 25 are slender cylindrical iron bars. Stiffening plates 22 are fixed between the two side plates of the U-shaped steel plate beam. Multiple small vibrators 24 are evenly spaced inside the U-shaped steel plate beam. A horizontal support frame 18 for the vibratory beam 23 is provided above it. Since the reinforcing bars in the precast bridge deck are mainly arranged at equal intervals in the horizontal and vertical directions, when the vibratory beam moves longitudinally along the long-side steel side mold, the thin iron columns welded to it below will be blocked by the horizontal reinforcing bars. Therefore, a shaft connection is provided between the vibratory beam and the slender cylindrical iron bars below. When obstructed by reinforcing bars, the slender cylindrical iron rod can deflect along its axis, changing from a vertical to a horizontal position. This allows the slender cylindrical iron rod to pass through the space of the approximately 6cm thick concrete cover layer on the upper part of the precast bridge deck without getting stuck. The vibrating beam 23 is powered by multiple sets of small vibrators, which transmit the vibration force to the U-shaped steel plate beam, and simultaneously to the penetrating small vibrators. The U-shaped steel plate beam primarily vibrates and levels the upper surface of the precast bridge deck concrete, while the penetrating small vibrators uniformly vibrate the upper half of the precast bridge deck concrete, drawing out micro-air bubbles from the lower part of the concrete brought up by the vibrator attached to the bottom of the steel plate formwork, thus ensuring uniform and dense internal compaction of the concrete.

[0046] Example 2

[0047] In a preferred embodiment, the modular assembly type long side steel mold 4 is composed of multiple long side steel molds assembled along the length direction. Adjacent long side steel molds are fixedly connected by long side steel mold splicing bolts 6. The modular assembly type long side steel mold 4 is 10-15cm higher than the integrated short side steel mold, so as to form a closed space above the precast bridge deck. Multiple sets of tie bolt fixing plates 10 are symmetrically arranged at the bottom of the modular assembly type long side steel mold 4 on both sides below the steel plate bottom mold 9, and tie bolts 11 are inserted through the tie bolt fixing plates 10.

[0048] Furthermore, the modular, assembled long-side steel side mold 4 and the integrated short-side steel side mold 8 are each provided with multiple pre-reserved openings 29 along the vertical direction for threading the precast bridge deck U-shaped steel bars 32. To reduce the concrete's lack of compaction caused by cement slurry seeping through the pre-reserved openings during concrete pouring and vibration, this invention adjusts the traditional U-shaped steel bar pre-reserved openings of the side molds into closed, elongated oval openings. Each pre-reserved opening 29 is provided with a steel bar pre-reserved opening baffle 27 on its outer side. The left and right sides of the steel bar pre-reserved opening baffle 27 are locked to the outer side of the pre-reserved opening 29 by the side mold pre-reserved opening opening baffle clip plate 28 and locking nuts. The upper and lower sides of the steel bar pre-reserved opening baffle 27 are provided with arc grooves for threading the precast bridge deck U-shaped steel bars.

[0049] Example 3

[0050] In a preferred embodiment, the horizontal support frame 18 of the vibrating beam includes a support hanger beam 181 located directly above and parallel to the vibrating beam 23. Two vibrating beam hangers are vertically inserted in the support hanger beam 181, and the lower ends of the vibrating beam hangers are connected to the vibrating beam 23.

[0051] The vibratory beam hanger includes an upper screw 19, which passes through the supporting hanger beam 181. The lower end of the upper screw 19 is threadedly connected to the lower connecting rod 20. The vertical height of the vibratory beam 23 is adjusted by changing the position of the upper screw 19 within the lower connecting rod 20. The bottom of the lower connecting rod 20 is fixedly connected to the upper horizontal surface of the U-shaped steel plate beam. Vibration damping springs 21 are installed on both the upper and lower sides of the supporting hanger beam 181. The upper screw 19 and the lower connecting rod 20 are connected by a threaded connection, which allows for adjustment of the vertical height of the U-shaped steel plate beam. The lower connecting rod is welded to the U-shaped steel plate beam and then reinforced with stiffening plates to achieve better overall integrity. The vibratory beam hangers are connected as a whole through pre-reserved holes in the support hanger beam 181. Simultaneously, two sets of damping springs at the top and bottom allow for a small amount of free displacement between the vibratory beam hangers and the support hanger beam. This minimizes the vibration generated by multiple small vibrators through the two sets of damping springs, ensuring the smooth movement of the self-propelled integrated vibratory compaction and leveling mechanism above the combined formwork system.

[0052] Example 4

[0053] Furthermore, the self-propelled integrated vibration and leveling mechanism also includes multiple parallel hydraulically adjustable scraper support beams 26, which are parallel to the segmented, assembled long-side steel side molds 4. Symmetrically arranged below both ends of the hydraulically adjustable scraper support beams 26 are deflectable hydraulically adjustable scrapers 12, which are perpendicular to and rotatably connected to the multiple hydraulically adjustable scraper support beams 26. This invention, by setting up a vibrating beam capable of vertical vibration and installing deflectable hydraulically adjustable scrapers on both sides of the vibrating beam, achieves uniform vibration and leveling of the upper part of the precast bridge deck after the top surface concrete is poured.

[0054] Furthermore, in the horizontal support frame 18 of the vibrating beam, the bottom ends of the two horizontal support beams of the vibrating beam located on both sides of the support hanger beam 181 are symmetrically provided with inverted U-shaped vertical support frames 16. The inverted U-shaped vertical support frames 16 are provided with axle-wheel integrated traveling wheels 17. The axle-wheel integrated traveling wheels 17 located at both ends of the horizontal support beam of the vibrating beam are respectively set on the top of the segmented combined assembly long side steel side mold 4 on both sides, and can travel along the segmented combined assembly long side steel side mold 4.

[0055] Furthermore, a motor support block 15 is fixed to the top of the horizontal support beam of the vibrating beam, and a self-propelled motor 13 is fixed to the top of the motor support block 15. The self-propelled motor 13 drives the integrated axle wheel 17 to rotate through the transmission belt 14.

[0056] Example 5

[0057] In this embodiment, in order to prevent the precast bridge deck concrete from causing outward expansion deformation of the long side formwork during pouring and vibration, a side formwork anti-expansion tie rod 30 is installed above the two side segmented assembled long side steel side formwork 4 after vibration and before the concrete solidifies. L-shaped plates 33 are installed at the bottom of both sides of the side formwork anti-expansion tie rod 30. The horizontal part of the L-shaped plate abuts against the top of the segmented assembled long side steel side formwork 4. A hand-cranked columnar top rod 31 is inserted through the vertical part of the L-shaped plate. By adjusting the length of the hand-cranked columnar top rod 31, it abuts against the outer wall of the segmented assembled long side steel side formwork 4.

[0058] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A prefabricated bridge deck pouring and vibrating integrated device for a steel-concrete composite beam bridge, characterized in that: The application relates to a support system, a combined steel formwork system and a vibrating and screeding system. The support system comprises a plurality of concrete foundation blocks (1), the concrete foundation blocks (1) are fixedly provided with support beams (2), and the two sides of the support beams (2) are fixed through a plurality of support beam fixing blocks (3). The combined steel formwork system comprises block-combined and assembled long-side steel side forms (4), integral short-side steel side forms (8) and steel plate bottom forms (9), the steel plate bottom forms (9) are laid on the support beams (2), the integral short-side steel side forms (8) and the steel plate bottom forms (9) are clamped between the block-combined and assembled long-side steel side forms (4) on the two sides, the height of the block-combined and assembled long-side steel side forms (4) is higher than the height of the integral short-side steel side forms (8), and the integral short-side steel side forms (8) and the block-combined and assembled long-side steel side forms (4) are fixedly connected through long-short-side side form connecting bolts (5). The vibrating and screeding system comprises matrix-arranged attached vibrators (7) at the bottom of the steel plate bottom forms (9) and a self-walking vibrating and screeding integrated vibrating mechanism above the combined steel formwork system, wherein the self-walking vibrating and screeding integrated vibrating mechanism takes the block-combined and assembled long-side steel side forms (4) as a walking track. The self-walking vibrating and screeding integrated vibrating mechanism comprises a vibrating beam (23) capable of vibrating up and down, the vibrating beam (23) is perpendicular to the block-combined and assembled long-side steel side forms (4), the vibrating beam (23) comprises a U-shaped steel plate beam with an opening facing upwards, the bottom of the U-shaped steel plate beam is fixedly provided with double-row and multiple deflectable stabbing small vibrators (25), the two side plates of the U-shaped steel plate beam are fixedly provided with stiffening plates (22), and the inside of the U-shaped steel plate beam is fixedly provided with multiple small vibrators (24); a vibrating beam horizontal support frame body (18) is arranged above the vibrating beam (23); the vibrating beam horizontal support frame body (18) comprises a support boom beam (181) located directly above the vibrating beam (23) and parallel to the vibrating beam (23), two vibrating beam hangers are vertically arranged in the support boom beam (181), and the lower ends of the vibrating beam hangers are connected with the vibrating beam (23); the vibrating beam hangers comprise vibrating beam hanger upper screws (19), the vibrating beam hanger upper screws (19) are arranged in the support boom beam (181), the lower ends of the vibrating beam hanger upper screws (19) are threadedly connected in vibrating beam hanger lower connecting rods (20), the vertical height of the vibrating beam (23) is adjusted by adjusting the positions of the vibrating beam hanger upper screws (19) in the vibrating beam hanger lower connecting rods (20), the bottom of the vibrating beam hanger lower connecting rods (20) is fixedly connected with the upper surface of the horizontal part of the U-shaped steel plate beam, and the support boom beam (181) is provided with hanger damping springs (21) on the upper and lower sides. ​ The self-walking vibrating and screeding integrated vibrating mechanism further comprises a plurality of parallel arranged hydraulic adjustable screed support beams (26), which are parallel to the block combined and assembled long side steel side mold (4), and a deflectable hydraulic adjustable screed (12) is symmetrically arranged below both ends of the hydraulic adjustable screed support beam (26), which is perpendicular to the plurality of hydraulic adjustable screed support beams (26) and is rotatably connected with the plurality of hydraulic adjustable screed support beams (26) respectively.

2. The integrated pouring and vibrating device for precast bridge deck of a steel-concrete composite girder bridge according to claim 1, characterized in that: The block combined and assembled long side steel side mold (4) is combined and assembled along the length direction by a plurality of long side steel side molds, and two adjacent long side steel side molds are fixedly connected through long side steel side mold jointing bolts (6). A plurality of groups of pull bolt fixing plates (10) are symmetrically arranged at the bottom of the block combined and assembled long side steel side mold (4) on both sides below the steel plate bottom mold (9), and a pull bolt (11) is arranged in the pull bolt fixing plate (10).

3. The integrated pouring and vibrating device for precast deck of steel-concrete composite girder bridge according to claim 2, characterized in that: A plurality of side mold bar penetrating reserved openings (29) are arranged on the block combined and assembled long side steel side mold (4) and the integrated short side steel side mold (8) respectively along the vertical direction and are spaced apart, which are used for penetrating the prefabricated bridge deck U-shaped steel bars (32), the side mold bar penetrating reserved opening (29) is a closed long circular opening, a steel bar reserved opening baffle (27) is arranged outside each side mold bar penetrating reserved opening (29), the steel bar reserved opening baffle (27) is locked on the outside of the side mold bar penetrating reserved opening (29) through the side mold bar penetrating reserved opening baffle buckle plate (28) and the locking nut on the left and right sides of the steel bar reserved opening baffle (27), and an arc groove for penetrating the prefabricated bridge deck U-shaped steel bar is arranged on the upper and lower sides of the steel bar reserved opening baffle (27).

4. The integrated pouring and vibrating device for precast deck of steel-concrete composite girder bridge according to claim 3, characterized in that: The bottom of the two ends of the two vibrating beam horizontal support beams on both sides of the vibrating beam horizontal support frame body (18) is symmetrically provided with a reverse U-shaped vertical support frame (16), and the reverse U-shaped vertical support frame (16) is provided with an axle wheel integrated walking wheel (17), the axle wheel integrated walking wheel (17) at the two ends of the vibrating beam horizontal support beam is arranged on the top of the block combined and assembled long side steel side mold (4) on both sides and can walk along the block combined and assembled long side steel side mold (4).

5. The integrated pouring and vibrating device for precast deck of steel-concrete composite girder bridge according to claim 4, characterized in that: The vibrating beam horizontal support frame body (18) is fixed with a motor support block (15), the top of the motor support block (15) is fixed with a self-walking motor (13), and the self-walking motor (13) drives the axle wheel integrated walking wheel (17) to rotate through a transmission belt (14).

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