Steel structure spliced bridge and method

Abstract

The application discloses a steel structure spliced bridge, which comprises a first bridge body and a second bridge body, a plurality of anchoring hangers, sliding connection of each anchoring hanger with a slide through a supporting ball seat, and a second middle beam connected to one of the anchoring hangers; a first middle beam and a driving member connected to the second middle beam for driving the first middle beam on both sides of the second middle beam to move close to the side beam, wherein the anchoring hanger at the bottom of the second middle beam is fixedly connected with a driving frame, the driving member comprises a driving unit arranged on the driving frame and a telescopic unit connected to both sides of the second middle beam, and the telescopic unit is attached to the side of the first middle beam to drive the first middle beam to move close to the side beam, the driving member is used for driving the first middle beam, so that the jamming phenomenon of the first middle beam after moving close to the second middle beam is avoided, and the situation that the first middle beam is long-term close to the second middle beam and far away from the side beam, thereby causing the side beam to bear the vehicle pressure for a long time and to be disconnected and cracked is avoided.

Description

Technical Field

[0001] This invention relates to the field of spliced ​​bridge technology, specifically to a steel structure spliced ​​bridge and its method. Background Technology

[0002] Precast spliced ​​bridges are a branch of prefabricated construction. Existing prefabricated bridges are mostly assembled from precast metal components, using precast components instead of on-site casting. Expansion joints in current segmented rigid structure spliced ​​bridges are designed to accommodate bridge deck deformation and are typically placed between the ends of two beams, between a beam end and an abutment, or at the hinge points of the bridge. Expansion joints must be able to expand and contract freely in both directions parallel and perpendicular to the bridge axis, be robust and reliable, and allow for smooth, noiseless vehicle passage; they must prevent rainwater and debris from seeping in and causing blockages; and installation, inspection, maintenance, and cleaning should be simple and convenient.

[0003] Currently, the expansion joint structure of steel structure spliced ​​bridges mainly consists of two bridge bodies and a reserved groove. The displacement control box, side beams, support beams, and middle beams are installed in the reserved groove. However, the small welding surface between the side beams and anchor plates leads to weak connections, which can easily cause the side beams to detach and crack the bridge deck. On the other hand, during long-term use, the middle beam of the modular expansion joint tends to move towards the center after the bridge deforms, causing jamming. As a result, when vehicles pass over the expansion joint, the side beams bear the weight for a long time, which can lead to weld failure and bridge deck cracking over time. To address these shortcomings, we propose a steel structure spliced ​​bridge and method. Summary of the Invention

[0004] The purpose of this invention is to provide a steel structure splicing bridge to solve the problems of how to increase the welding area between the side beam and the anchor plate and how to ensure that the first middle beam does not get stuck and remains close to the side beam to share the pressure of the side beam.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a steel structure splicing bridge, comprising a first bridge body and a second bridge body, wherein a reserved groove is provided between the first bridge body and the second bridge body, the reserved groove contains pre-embedded reinforcing bars, and multiple sets of pressure bearing supports are provided in the reserved groove, each set of pressure bearing supports consisting of two supports respectively connected to the first bridge body and the second bridge body, each pressure bearing support having a corresponding displacement control box, and a supporting beam connected to the two displacement control boxes, the supporting beam having a sliding seat, and multiple supporting ball seats slidably disposed on the sliding seat, the displacement control box being slidably connected to the sliding seat through the supporting ball seats, and further comprising multiple anchor hangers, each of the anchor hangers being slidably connected to the sliding seat through the supporting ball seats, one of which is an anchor... A second central beam is connected to the fixed hanger; two first central beams are respectively located on both sides of the second central beam and are slidably set relative to the supporting crossbeam via the anchor hanger; multiple telescopic belts are provided, each of which is used to connect between the side beam and the first central beam, the first central beam and the second central beam, and the side beam and the second central beam; a driving component is connected to the second central beam to drive the first central beams on both sides of the second central beam to move closer to the side beam, wherein a driving frame is fixedly connected to the anchor hanger located at the bottom of the second central beam, and the driving component includes a driving unit disposed on the driving frame and telescopic units connected to both sides of the second central beam, the telescopic units being fitted with the sides of the first central beam to drive the first central beams to move closer to the side beam.

[0006] In a preferred embodiment of the present invention: an extension plate is provided on one side of the pressure support, and a pull rod is connected to the extension plate by a pin seat. The pull rod passes through a first through groove on the side of the drive frame and is connected to a first plate. A first cylinder is fixedly connected to the first plate. A first piston is slidably and sealed inside the first cylinder. A first push rod is fixedly connected to the first piston. A second plate is detachably connected to one end of the first push rod. The first push rod and the first cylinder are elastically connected. In the natural state, the first piston returns to its original position and the first cylinder draws in external air. The telescopic unit includes a second cylinder installed on both sides of the second middle beam. A second piston is slidably and sealed inside the second cylinder. A second push rod is fixedly connected to the second piston. A third plate is fixedly connected to one end of the second push rod. A second spring is sleeved on the second push rod. The two ends of the second spring abut against the second cylinder and the third plate, respectively. A first valve assembly is installed on the first cylinder. One air outlet of the first valve assembly is connected to the second cylinder through a first air pipe.

[0007] As a preferred embodiment of the present invention: the first push rod is hollow, and a slide rod is fixedly connected to the second plate. A first spring is sleeved on the slide rod, and the two ends of the first spring abut against the first cylinder.

[0008] In a preferred embodiment of the present invention: the driving unit includes a sensor assembly installed in a displacement control box, the output end of the sensor assembly is provided with a fourth plate, the fourth plate is installed on the top surface of a reserved slot, an extension plate is provided on one side of the pressure support, an air pump is provided inside the driving frame, the telescopic unit includes a second cylinder installed on both sides of the second middle beam, a second piston is slidably connected inside the second cylinder, a second push rod is fixedly connected to the second piston, a third plate is fixedly connected to one end of the second push rod, a second spring is sleeved on the second push rod, the two ends of the second spring abut against the second cylinder and the third plate respectively, the air pump is electrically connected to the sensor assembly, and the output end of the air pump is connected to the second cylinder through a first air pipe.

[0009] As a preferred embodiment of the present invention, a cross-type telescopic rod is connected between the two extension plates.

[0010] In a preferred embodiment of the present invention: the reserved groove is provided with anchoring steel bars, the anchoring steel bars are fixed to the side beam by the anchoring plate, and steel bars are inserted between the anchoring steel bars and the pre-embedded steel bars.

[0011] In a preferred embodiment of the present invention: the anchor plate is provided with a first groove, the inner side of the first groove has a second groove, the bottom of the side beam has a third groove corresponding to the second groove, when the bottom of the side beam is inserted into the first groove, the third groove is aligned with the second groove, a reinforcing rib is inserted between the third groove and the second groove, and the reinforcing rib is welded to the third groove and the second groove.

[0012] In a preferred embodiment of the present invention: a first pressure plate 400 and a second pressure plate 500 are respectively connected to the first bridge body 100 and the second bridge body 101. The first pressure plate 400 is elastically connected to the 100 by a first elastic member 403, and the second bridge body 101 is elastically connected to the second pressure plate 500 by a second elastic member 502. A first filling block 401 and a second filling block 501 are respectively connected to the bottom of the first pressure plate 400 and the second pressure plate 500. The first filling block 401 and the second filling block 501 are in the shape of an inverted trapezoid. The first filling block 401 and the second filling block 501 are respectively located between the second middle beam 113 and the first middle beam 112. When the first filling block 401 and the second filling block 501 move downward, the first middle beam 112 located on both sides of the second middle beam 113 moves closer to the second bridge body 101.

[0013] As a preferred embodiment of the present invention, the aperture shape formed by the third groove and the second groove is circular, rectangular or triangular.

[0014] As a preferred embodiment of the present invention: the supporting beam is provided with positioning holes, and the inner side of the displacement control box has a support block corresponding to the positioning holes, so as to prevent the supporting beam from falling off the displacement control box through the positioning holes.

[0015] A method for splicing a steel structure bridge involves first creating pre-reserved slots between the segmented bridge sections and pre-embedding reinforcing bars at equal intervals in these slots. Then, bearing supports and displacement control boxes are installed at equal intervals. Multiple support balls, multiple anchor hangers, support beams, and sliding blocks are installed between the symmetrical displacement control boxes to form a displacement system. Next, the side beams are welded to anchor plates, and the first and second middle beams are welded to the anchor hangers. These are then welded to the side beams via multiple anchor reinforcing bars and anchor plates, and installed within the pre-reserved slots, where they are fixed to the pre-embedded reinforcing bars. Concrete is then poured into the pre-reserved slots. Finally, a driving mechanism is installed on the displacement system to adjust the relative positions of the first and second middle beams.

[0016] Compared with the prior art, the beneficial effects of the present invention are: when a vehicle passes between the first bridge body and the second bridge body, the first middle beam or the second middle beam will be displaced due to inertia. The present invention drives the first middle beam through a driving component to prevent the first middle beam from getting stuck after it approaches the second middle beam. This avoids the situation where the first middle beam is close to the second middle beam for a long time and is far from the side beam, which causes the side beam to bear the vehicle pressure for a long time and thus cause it to desolder and crack.

[0017] As the extension plate moves, the drive frame moves through the anchor hanger. During the movement, the drive frame abuts against the second plate, which in turn drives the first piston to slide inside the first cylinder through the first push rod. The air pressure inside the first cylinder is then transported to the second cylinder through the first air pipe. The second piston then drives the second push rod to extend, and the third plate pushes the first middle beams on both sides of the second middle beam towards the side beam. At this time, the wheel can withstand some of the pressure by passing over the side beam in a short time. Therefore, the weight of the vehicle can be evenly distributed to the support beam, increasing the service life of the side beam.

[0018] The weight of passing vehicles is detected by the fourth plate. When the weight exceeds the preset value, it may cause significant damage to the side beam. In this case, the first middle beam needs to be moved closer to the side beam to reduce the support time of the side beam. At this time, the second cylinder is driven by the air pump, so that the second push rod extends and drives the first middle beam to move closer to the side beam, thereby increasing the service life of the side beam. Attached Figure Description

[0019] Figure 1 This is a structural schematic diagram of a steel structure splicing bridge according to a first embodiment of the present invention;

[0020] Figure 2 This invention relates to a steel structure splicing bridge. Figure 11Schematic diagram of the structure of AA;

[0021] Figure 3 This invention relates to a steel structure splicing bridge. Figure 1 A structural diagram of section B;

[0022] Figure 4 This invention relates to a steel structure splicing bridge. Figure 1 A schematic diagram of the structure of part A;

[0023] Figure 5 This invention relates to a steel structure splicing bridge. Figure 3 A structural diagram of section D;

[0024] Figure 6 This is a structural schematic diagram of a second embodiment of a steel structure splicing bridge according to the present invention;

[0025] Figure 7 This invention relates to a steel structure splicing bridge. Figure 6 A schematic diagram of the structure of section E;

[0026] Figure 8 This is a structural schematic diagram of the second cylindrical body 213 of a steel structure spliced ​​bridge according to the present invention;

[0027] Figure 9 This invention relates to a steel structure splicing bridge. Figure 1 A structural diagram of section C;

[0028] Figure 10 This is a schematic diagram of the connection structure between the anchor plate and the side beam of a steel structure spliced ​​bridge according to the present invention;

[0029] Figure 11 This is a schematic diagram of the overall structure of a steel structure splicing bridge according to the present invention;

[0030] Figure 12 This is a structural schematic diagram of a third embodiment of a steel structure splicing bridge according to the present invention;

[0031] Figure 13 This is a schematic diagram of the structure of the first and second pressure plates in Embodiment 3 of a steel structure spliced ​​bridge according to the present invention. Figure 1 ;

[0032] Figure 14 This is a schematic diagram of the structure of the first and second pressure plates in Embodiment 3 of a steel structure spliced ​​bridge according to the present invention. Figure 2 .

[0033] In the diagram: 100, First bridge body; 101, Second bridge body; 102, Bearing bearing; 103, Extension plate; 104, Cross-type telescopic rod; 105, Displacement control box; 107, Support beam; 108, Slide seat; 110, Positioning hole; 111, Side beam; 112, First middle beam; 113, Second middle beam; 114, Telescopic belt; 115, Support ball seat; 116, Anchor hanger; 119, Embedded steel bar; 120, Anchor plate; 121, First groove; 122, Second groove; 123, Third groove; 124, Reinforcing rib; 125, Anchor steel bar Rib; 126. Reserved slot; 200. Drive frame; 201. Pin seat; 202. Pull rod; 203. First plate; 204. First through slot; 205. First cylinder; 206. First piston; 207. First push rod; 208. First valve assembly; 209. First air pipe; 210. Second plate; 211. Slide rod; 212. First spring; 213. Second cylinder; 214. Second piston; 215. Second push rod; 216. Third plate; 217. Second spring; 300. Sensor assembly; 301. Fourth plate; 302. Air pump;

[0034] 400, First pressure plate; 401, First filling block; 402, First connecting unit; 403, First elastic element; 50, Second pressure plate; 501, Second filling block; 502, Second elastic element. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this invention, and not all of them. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0036] It should be understood that the terms "comprising / including," "consisting of," or any other variations are intended to cover non-exclusive inclusion, such that a product, apparatus, process, or method that comprises a list of elements includes not only those elements but may also include, where necessary, other elements not expressly listed, or elements inherent to such a product, apparatus, process, or method. Without further limitation, an element defined by the phrases "comprising / including," "consisting of," does not exclude the presence of additional identical elements in the product, apparatus, process, or method that includes said element.

[0037] It should also be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device, component or structure referred to must have a specific orientation, be constructed or operated in a specific orientation, and should not be construed as a limitation of the present invention.

[0038] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0039] The technical solutions provided by the various embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0040] Example 1:

[0041] Please see Figure 1-11An embodiment of the present invention provides a steel structure spliced ​​bridge, comprising a first bridge body 100 and a second bridge body 101. A reserved groove 126 is provided between the first bridge body 100 and the second bridge body 101. The reserved groove 126 contains pre-embedded reinforcing bars 119. Multiple sets of pressure-bearing supports 102 are provided within the reserved groove 126. Each set of pressure-bearing supports 102 consists of two supports, which are respectively connected to the first bridge body 100 and the second bridge body 101. Each pressure-bearing support 102 has a corresponding displacement control box 105. A supporting beam 107 is connected to the two displacement control boxes 105. A sliding seat 108 is provided on the supporting beam 107, and multiple supports are slidably arranged on the sliding seat 108. The ball support 115 and the displacement control box 105 are slidably connected to the slide block 108 via the ball support 115. The system also includes multiple anchor hangers 116, each slidably connected to the slide block 108 via the ball support 115. One anchor hanger 116 is connected to a second central beam 113. Two anchor hangers are located on either side of the second central beam 113 and are slidably connected to the support beam 107 via the anchor hangers 116. Multiple telescopic belts 114 are included, each used to connect between the side beam 111 and the first central beam 112, the first central beam 112 and the second central beam 113, and the side beam 111 and the second central beam 113.A driving component, connected to the second middle beam 113, is used to drive the first middle beams 112 on both sides of the second middle beam 113 toward the side beam 111. A driving frame 200 is fixedly connected to the anchor hanger 116 at the bottom of the second middle beam 113. The driving component includes a driving unit mounted on the driving frame 200 and telescopic units connected to both sides of the second middle beam 113. The telescopic units fit against the sides of the first middle beams 112 to drive them toward the side beams 111. The invention first creates reserved slots 126 between the segmented bridge sections and pre-embeds reinforcing bars 119 at equal intervals in the reserved slots 126. Then, load-bearing supports 102 and displacement control boxes 105 are installed at equal intervals. Multiple support ball seats 115, multiple anchor hangers 116, support beams 107, and slides 108 are installed between the symmetrical displacement control boxes 105 to form a displacement system. Finally, the side beam 111 and the anchor plate 1... 20. Welding: The first middle beam 112 and the second middle beam 113 are welded to the anchor hanger 116. Then, multiple anchoring steel bars 125 and anchoring plates 120 are welded to the side beam 111 and installed in the reserved groove 126, where they are fixed with pre-embedded steel bars 119. Concrete is poured into the reserved groove 126. Finally, a drive component is installed on the displacement system to adjust the relative position of the first middle beam 112 and the second middle beam 113. When a vehicle passes between the first bridge body 100 and the second bridge body 101, the first middle beam 112 or the second middle beam 113 will shift due to inertia. This invention uses a drive component to drive the first middle beam 112, preventing it from jamming when it approaches the second middle beam 113. This avoids the situation where the first middle beam 112 is too close to the second middle beam 113 for a long time, resulting in the side beam 111 bearing vehicle pressure for an extended period and potentially cracking due to weld detachment.

[0042] Example 2:

[0043] Please see Figure 1-11A steel structure spliced ​​bridge includes a first bridge body 100 and a second bridge body 101. A reserved groove 126 is provided between the first bridge body 100 and the second bridge body 101. The reserved groove 126 contains pre-embedded steel bars 119. Multiple sets of pressure-bearing supports 102 are provided in the reserved groove 126. Each set of pressure-bearing supports 102 consists of two supports and is respectively connected to the first bridge body 100 and the second bridge body 101. Each pressure-bearing support 102 has a corresponding displacement control box 105. A support beam 107 is connected to the two displacement control boxes 105. A slide 108 is provided on the support beam 107. Multiple support ball seats 115 are slidably arranged on the slide 108. The displacement control boxes 105 are slidably connected to the slide 108 through the support ball seats 115. It also includes multiple anchor hangers 116, each anchor hanger 116 being slidably connected to a slide block 108 via a support ball seat 115, with a second central beam 113 connected to one of the anchor hangers 116; two anchor hangers 116 are respectively located on both sides of the second central beam 113 and are slidably arranged relative to the support crossbeam 107 via anchor hangers 116; multiple telescopic belts 114 are included, each telescopic belt 114 being used to connect between the side beam 111 and the first central beam 112, the first central beam 112 and the second central beam 113, and the side beam 111 and the second central beam 113; a driving member is connected to the second central beam 113 to drive the first central beams 112 on both sides of the second central beam 113 to move closer to the side beam 111, wherein the first central beam 112 located on the second central beam 113 is connected to the slide block 108 via a support ball seat 115, with a second central beam 113 being connected to the slide block 108 via an anchor hanger 116. A drive frame 200 is fixedly connected to the bottom anchor hanger 116. The drive components include a drive unit mounted on the drive frame 200 and telescopic units connected to both sides of the second middle beam 113. The telescopic units fit against the side of the first middle beam 112 to drive the first middle beam 112 towards the side beam 111. In this invention, a reserved groove 126 is first opened between the segmented bridge sections, and pre-embedded steel bars 119 are pre-embedded at equal intervals in the reserved groove 126. Then, bearing supports 102 and displacement control boxes 105 are installed at equal intervals. Multiple support ball seats 115, multiple anchor hangers 116, support beams 107 and slides 108 are installed between the symmetrical displacement control boxes 105 to form a displacement system. Then, the side beam 111 and the anchor plate 1 are connected. 20. Welding: The first middle beam 112 and the second middle beam 113 are welded to the anchor hanger 116. Then, multiple anchoring steel bars 125 and anchoring plates 120 are welded to the side beam 111 and installed in the reserved groove 126, where they are fixed with the pre-embedded steel bars 119. Concrete is poured into the reserved groove 126. Finally, a drive component is installed on the displacement system to adjust the relative position of the first middle beam 112 and the second middle beam 113. When a vehicle passes between the first bridge body 100 and the second bridge body 101, the first middle beam 112 or the second middle beam 113 will be displaced due to inertia. This invention uses a drive component to drive the first middle beam 112, preventing the first middle beam 112 from getting stuck when it approaches the second middle beam 113.To avoid the situation where the first middle beam 112 is close to the second middle beam 113 for a long time and far from the side beam 111, causing the side beam 111 to bear vehicle pressure for a long time and thus crack due to weld failure, the present invention provides an embodiment in which: an extension plate 103 is provided on one side of the pressure bearing support 102, and a tie rod 202 is connected to the extension plate 103 through a pin seat 201. The tie rod 202 passes through the first through groove 204 on the side of the drive frame 200 and is connected to the first plate 203. A first cylinder 205 is fixedly connected to the first plate 203, and a first piston 206 is slidably connected inside the first cylinder 205. A first push rod 207 is fixedly connected to the first piston 206. A second plate 210 is detachably connected to one end of the first push rod 207. The first push rod 207 is elastically connected to the first cylinder 205. In its natural state, the first piston 206 returns to its original position, and the first cylinder 205 draws in external air. The telescopic unit includes a second cylinder 213 installed on both sides of the second central beam 113. A second piston 214 is slidably connected inside the second cylinder 213. A second push rod 215 is fixedly connected to the second piston 214, and a third plate is fixedly connected to one end of the second push rod 215. 216. A second spring 217 is sleeved on the second push rod 215. The two ends of the second spring 217 abut against the second cylinder 213 and the third plate 216, respectively. A first valve assembly 208 is installed on the first cylinder 205. One of the air outlets of the first valve assembly 208 is connected to the second cylinder 213 through a first air pipe 209. In this embodiment, as the extension plate 103 moves, the drive frame 200 is driven to move through the anchor hanger 116. Therefore, the drive frame 200 abuts against the second plate 210 during the movement, and then drives the first push rod 207 to move the first... Piston 206 slides within the first cylinder 205, transmitting the air pressure from the first cylinder 205 to the second cylinder 213 via the first air pipe 209. This, in turn, causes the second piston 214 to extend the second push rod 215, which, through the third plate 216, pushes the first middle beams 112 on both sides of the second middle beam 113 towards the side beam 111. At this point, the wheel only needs a short time to pass over the side beam 111 before the pressure is partially supported by the first middle beams 112. Therefore, the vehicle's weight is evenly distributed onto the supporting crossbeam 107, increasing the service life of the side beam 111.

[0044] Optionally, please refer to [link / reference]. Figure 1-11 In one embodiment of the present invention, the first push rod 207 is hollow, and a slide rod 211 is fixedly connected to the second plate 210. A first spring 212 is sleeved on the slide rod 211, and the two ends of the first spring 212 abut against the first cylinder 205 respectively.

[0045] Alternatively, please refer to [link / reference]. Figure 1-11 One embodiment of the present invention provides that a cross-type telescopic rod 104 is connected between two extension plates 103 to improve the smoothness of movement between the two displacement control boxes 105.

[0046] Alternatively, please refer to [link / reference]. Figure 1-11 In one embodiment of the present invention, an anchoring steel bar 125 is provided in the reserved groove 126, the anchoring steel bar 125 is fixed to the side beam 111 through the anchoring plate 120, and steel bars are inserted between the anchoring steel bar 125 and the pre-embedded steel bar 119.

[0047] Alternatively, please refer to [link / reference]. Figure 1-11 In one embodiment of the present invention, the anchor plate 120 is provided with a first groove 121, and the inner side of the first groove 121 has a second groove 122. The bottom of the side beam 111 has a third groove 123 corresponding to the second groove 122. When the bottom of the side beam 111 is inserted into the first groove 121, the third groove 123 is aligned with the second groove 122. A reinforcing rib 124 is inserted between the third groove 123 and the second groove 122. The reinforcing rib 124 is welded to the third groove 123 and the second groove 122. This embodiment improves the structure of the pressure-bearing support 102, increases the welding area between it and the side beam 111, and forms a shape that can accommodate the reinforcing rib 124 by the second groove 122 and the third groove 123. The reinforcing rib 124 is welded to the third groove 123 and the second groove 122, which further improves the compressive strength of the side beam 111.

[0048] Alternatively, please refer to [link / reference]. Figure 1-11 In one embodiment of the present invention, the aperture shape formed by the third groove 123 and the second groove 122 is circular, rectangular or triangular.

[0049] Alternatively, please refer to [link / reference]. Figure 1-11 In one embodiment of the present invention, a positioning hole 110 is provided on the support beam 107, and a support block corresponding to the positioning hole 110 is provided on the inner side of the displacement control box 105. The positioning hole 110 prevents the support beam 107 from falling off the displacement control box 105.

[0050] Example 3:

[0051] Please see Figure 1-11A steel structure spliced ​​bridge includes a first bridge body 100 and a second bridge body 101. A reserved groove 126 is provided between the first bridge body 100 and the second bridge body 101. The reserved groove 126 contains pre-embedded steel bars 119. Multiple sets of pressure-bearing supports 102 are provided in the reserved groove 126. Each set of pressure-bearing supports 102 consists of two supports and is respectively connected to the first bridge body 100 and the second bridge body 101. Each pressure-bearing support 102 has a corresponding displacement control box 105. A support beam 107 is connected to the two displacement control boxes 105. A slide 108 is provided on the support beam 107. Multiple support ball seats 115 are slidably arranged on the slide 108. The displacement control boxes 105 are slidably connected to the slide 108 through the support ball seats 115. It also includes multiple anchor hangers 116, each anchor hanger 116 being slidably connected to a slide block 108 via a support ball seat 115, with a second central beam 113 connected to one of the anchor hangers 116; two anchor hangers 116 are respectively located on both sides of the second central beam 113 and are slidably arranged relative to the support crossbeam 107 via anchor hangers 116; multiple telescopic belts 114 are included, each telescopic belt 114 being used to connect between the side beam 111 and the first central beam 112, the first central beam 112 and the second central beam 113, and the side beam 111 and the second central beam 113; a driving member is connected to the second central beam 113 to drive the first central beams 112 on both sides of the second central beam 113 to move closer to the side beam 111, wherein the first central beam 112 located on the second central beam 113 is connected to the slide block 108 via a support ball seat 115, with a second central beam 113 being connected to the slide block 108 via an anchor hanger 116. A drive frame 200 is fixedly connected to the bottom anchor hanger 116. The drive components include a drive unit mounted on the drive frame 200 and telescopic units connected to both sides of the second middle beam 113. The telescopic units fit against the side of the first middle beam 112 to drive the first middle beam 112 towards the side beam 111. In this invention, a reserved groove 126 is first opened between the segmented bridge sections, and pre-embedded steel bars 119 are pre-embedded at equal intervals in the reserved groove 126. Then, bearing supports 102 and displacement control boxes 105 are installed at equal intervals. Multiple support ball seats 115, multiple anchor hangers 116, support beams 107 and slides 108 are installed between the symmetrical displacement control boxes 105 to form a displacement system. Then, the side beam 111 and the anchor plate 1 are connected. 20. Welding: The first middle beam 112 and the second middle beam 113 are welded to the anchor hanger 116. Then, multiple anchoring steel bars 125 and anchoring plates 120 are welded to the side beam 111 and installed in the reserved groove 126, where they are fixed with the pre-embedded steel bars 119. Concrete is poured into the reserved groove 126. Finally, a drive component is installed on the displacement system to adjust the relative position of the first middle beam 112 and the second middle beam 113. When a vehicle passes between the first bridge body 100 and the second bridge body 101, the first middle beam 112 or the second middle beam 113 will be displaced due to inertia. This invention uses a drive component to drive the first middle beam 112, preventing the first middle beam 112 from getting stuck when it approaches the second middle beam 113.To avoid the situation where the first middle beam 112 is close to the second middle beam 113 for a long time and far from the side beam 111, causing the side beam 111 to bear vehicle pressure for a long time and thus crack due to weld failure, the present invention provides an embodiment: the drive unit includes a sensor assembly 300 installed in the displacement control box 105, the output end of the sensor assembly 300 is provided with a fourth plate 301, the fourth plate 301 is installed on the top surface of the reserved slot 126, an extension plate 103 is provided on one side of the pressure support 102, an air pump 302 is provided inside the drive frame 200, the telescopic unit includes a second cylinder 213 installed on both sides of the second middle beam 113, a second piston 214 is slidably connected inside the second cylinder 213, a second push rod 215 is fixedly connected to the second piston 214, a third plate 216 is fixedly connected to one end of the second push rod 215, a second spring 217 is sleeved on the second push rod 215, and the second spring 217... The fourth plate 301 abuts against the second cylinder 213 and the third plate 216 respectively. The air pump 302 is electrically connected to the sensor assembly 300. The output of the air pump 302 is connected to the second cylinder 213 via the first air pipe 209. In this embodiment, the weight of passing vehicles is detected by the fourth plate 301. When the weight exceeds a preset value, it may cause significant damage to the side beam 111. In this case, the first middle beam 112 needs to be moved closer to the side beam 111 to reduce the support time of the side beam 111. The air pump 302 drives the second cylinder 213, causing the second push rod 215 to extend and drive the first middle beam 112 towards the side beam 111. In this embodiment, the installation distance of the fourth plate 301 can be set according to the scenario. For road sections with high vehicle speeds, the distance of the fourth plate 301 can be set further to ensure that the air pump 302 can fully drive the first middle beam 112 to move.

[0052] Alternatively, please refer to [link / reference]. Figure 1-11 One embodiment of the present invention provides that a cross-type telescopic rod 104 is connected between two extension plates 103 to improve the smoothness of movement between the two displacement control boxes 105.

[0053] Alternatively, please refer to [link / reference]. Figure 1-11 In one embodiment of the present invention, an anchoring steel bar 125 is provided in the reserved groove 126, the anchoring steel bar 125 is fixed to the side beam 111 through the anchoring plate 120, and steel bars are inserted between the anchoring steel bar 125 and the pre-embedded steel bar 119.

[0054] Please see Figures 12-14An embodiment of the present invention provides: a first pressure plate 400 and a second pressure plate 500 are respectively connected to the first bridge body 100 and the second bridge body 101. The first pressure plate 400 is elastically connected to the 100 via a first elastic member 403, and the second bridge body 101 is elastically connected to the second pressure plate 500 via a second elastic member 502. A first filling block 401 and a second filling block 501 are respectively connected to the bottom of the first pressure plate 400 and the second pressure plate 500. The first filling block 401 and the second filling block 501 are in the shape of an inverted trapezoid. The first filling block 401 and the second filling block 501 are respectively located between the second middle beam 113 and the first middle beam 112. When the first filling block 401 and the second filling block 501 move downward, the first middle beam 112 located on both sides of the second middle beam 113 moves closer to the second bridge body 101. The first pressure plate 400 and the second pressure plate 501 move closer to the second bridge body 101. The junction of the two pressure plates 500 is connected by a first connecting unit 402, which is composed of intersecting combs, enabling the first pressure plate 400 and the second pressure plate 500 to move in corresponding directions. When the vehicle travels onto the first pressure plate 400, the first pressure plate 400 moves downward due to gravity, which in turn drives the first filling block 401 to move downward. The inclined side of the first filling block 401 is in contact with the top sides of the first middle beam 112 and the second middle beam 113, thus forcibly separating the first middle beam 112 and the second middle beam 113. After separation, the movement distance of the second middle beam 113 is changed by gas propulsion as described in the above embodiment, thereby ensuring that the second middle beam 113 has moved to the designated position when the vehicle presses onto the anchor plate 120, thereby improving the distribution of the weight on the edge of the anchor plate 120 and increasing the service life of the anchor plate 120.

[0055] Alternatively, please refer to [link / reference]. Figure 1-11 In one embodiment of the present invention, the anchor plate 120 is provided with a first groove 121, and the inner side of the first groove 121 has a second groove 122. The bottom of the side beam 111 has a third groove 123 corresponding to the second groove 122. When the bottom of the side beam 111 is inserted into the first groove 121, the third groove 123 is aligned with the second groove 122. A reinforcing rib 124 is inserted between the third groove 123 and the second groove 122. The reinforcing rib 124 is welded to the third groove 123 and the second groove 122. This embodiment improves the structure of the pressure-bearing support 102, increases the welding area between it and the side beam 111, and forms a shape that can accommodate the reinforcing rib 124 by the second groove 122 and the third groove 123. The reinforcing rib 124 is welded to the third groove 123 and the second groove 122, which further improves the compressive strength of the side beam 111.

[0056] Alternatively, please refer to [link / reference]. Figure 1-11In one embodiment of the present invention, the aperture shape formed by the third groove 123 and the second groove 122 is circular, rectangular or triangular.

[0057] Alternatively, please refer to [link / reference]. Figure 1-11 In one embodiment of the present invention, a positioning hole 110 is provided on the support beam 107, and a support block corresponding to the positioning hole 110 is provided on the inner side of the displacement control box 105. The positioning hole 110 prevents the support beam 107 from falling off the displacement control box 105.

[0058] A method for splicing a steel structure bridge involves first creating a pre-reserved groove 126 between the segmented bridge sections, and then pre-embedding reinforcing bars 119 at equal intervals in the groove 126. Next, load-bearing supports 102 and displacement control boxes 105 are installed at equal intervals. Multiple support ball seats 115, multiple anchor hangers 116, support beams 107, and sliding blocks 108 are installed between the symmetrical displacement control boxes 105 to form a displacement system. Then, the side beams 111 are welded to anchor plates 120, and the first and second middle beams 112 and 113 are welded to the anchor hangers 116. Multiple anchor reinforcing bars 125 and anchor plates 120 are then welded to the side beams 111 and installed in the pre-reserved groove 126, where they are fixed to the pre-embedded reinforcing bars 119. Concrete is then poured into the pre-reserved groove 126. Finally, a driving component is installed on the displacement system to adjust the relative positions of the first and second middle beams 112 and 113.

[0059] When a vehicle passes between the first bridge body 100 and the second bridge body 101, the first middle beam 112 or the second middle beam 113 will be displaced due to inertia. This invention uses a driving component to drive the first middle beam 112, preventing it from jamming as it approaches the second middle beam 113. This avoids the situation where the first middle beam 112 is too close to the second middle beam 113 for an extended period, causing the side beam 111 to bear the vehicle pressure for too long and potentially crack or detach. Specifically, the first solution is... The movement of the extension plate 103 drives the drive frame 200 to move via the anchor hanger 116. During this movement, the drive frame 200 abuts against the second plate 210, which in turn drives the first piston 206 to slide within the first cylinder 205 via the first push rod 207. This transfers the air pressure within the first cylinder 205 to the second cylinder 213 via the first air pipe 209. The second piston 214 then drives the second push rod 215 to extend, and the third plate 216 pushes the first middle beams 112 on both sides of the second middle beam 113 towards... When the side beam 111 moves in the same direction, the wheel only needs a short time to pass over the side beam 111 before the pressure is supported by the first middle beam 112. This allows the vehicle's weight to be evenly distributed onto the supporting crossbeam 107, increasing the service life of the side beam 111. Alternatively, the fourth plate 301 can detect the weight of passing vehicles. If the weight exceeds a preset value, it may cause significant damage to the side beam 111. In this case, the first middle beam 112 needs to be moved closer to the side beam 111 to reduce the time the side beam 111 is supported. The air pump 302 drives the second cylinder 213, thereby causing the second push rod 215 to extend and drive the first middle beam 112 to move closer to the side beam 111. In this embodiment, the installation distance of the fourth plate 301 can be set according to the scenario. For road sections with high vehicle speed, the distance of the fourth plate 301 can be set further to ensure that the air pump 302 can fully drive the first middle beam 112 to move. Since each bridge connection device consists of multiple displacement control boxes 105, Scheme 1 and Scheme 2 can be used in combination.

[0060] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A steel structure splicing bridge, comprising a first bridge body (100) and a second bridge body (101), wherein a reserved groove (126) is provided between the first bridge body (100) and the second bridge body (101), and the reserved groove (126) contains pre-embedded reinforcing bars (119), characterized in that: Multiple sets of pressure-bearing supports (102) are provided in the reserved slot (126). Each set of pressure-bearing supports (102) consists of two supports, which are respectively connected to the first bridge body (100) and the second bridge body (101). Each pressure-bearing support (102) has a corresponding displacement control box (105). A support beam (107) is connected to the two displacement control boxes (105). A slide (108) is provided on the support beam (107). Multiple support ball seats (115) are slidably arranged on the slide (108). The displacement control box (105) is slidably connected to the slide (108) through the support ball seats (115). The system also includes... Multiple anchor hangers (116), each of the anchor hangers (116) being slidably connected to the slide (108) via a support ball seat (115), and a second central beam (113) being connected to one of the anchor hangers (116); The first middle beam (112) consists of two beams, which are located on both sides of the second middle beam (113) and are slidably connected to the supporting crossbeam (107) via anchor hangers (116); Telescopic belts (114), in multiples, and each of the telescopic belts (114) is used to connect the side beam (111) and the first middle beam (112), the first middle beam (112) and the second middle beam (113), and the side beam (111) and the second middle beam (113); A driving component is connected to the second middle beam (113) to drive the first middle beams (112) on both sides of the second middle beam (113) to move closer to the side beam (111). A driving frame (200) is fixedly connected to the anchor hanger (116) at the bottom of the second middle beam (113). The driving component includes a driving unit disposed on the driving frame (200) and telescopic units connected to both sides of the second middle beam (113). The telescopic units fit against the side of the first middle beam (112) to drive the first middle beam (112) to move closer to the side beam (111). An extension plate (103) is provided on one side of the pressure bearing support (102). A pull rod (202) is connected to the extension plate (103) via a pin seat (201). The pull rod (202) passes through the first through slot (204) on the side of the drive frame (200) and is connected to a first plate (203). A first cylinder (205) is fixedly connected to the first plate (203). A first piston (206) is slidably connected inside the first cylinder (205). A first push rod (207) is fixedly connected to the first piston (206). A second plate (210) is detachably connected to one end of the first push rod (207). The first push rod (207) and the first cylinder (205) are elastically connected. In the natural state, the first piston (206) returns to its original position in the first cylinder. The telescopic unit (205) draws in external air. The telescopic unit includes a second cylinder (213) installed on both sides of the second middle beam (113). A second piston (214) is slidably connected inside the second cylinder (213). A second push rod (215) is fixedly connected to the second piston (214). A third plate (216) is fixedly connected to one end of the second push rod (215). A second spring (217) is sleeved on the second push rod (215). The two ends of the second spring (217) abut against the second cylinder (213) and the third plate (216) respectively. A first valve assembly (208) is installed on the first cylinder (205). One of the air outlets of the first valve assembly (208) is connected to the second cylinder (213) through a first air pipe (209).

2. The steel structure splicing bridge as described in claim 1, characterized in that: The first push rod (207) is hollow, and a slide rod (211) is fixedly connected to the second plate (210). A first spring (212) is sleeved on the slide rod (211), and the two ends of the first spring (212) abut against the first cylinder (205).

3. The steel structure splicing bridge as described in claim 1, characterized in that: The drive unit includes a sensor assembly (300) installed in the displacement control box (105). The output end of the sensor assembly (300) is provided with a fourth plate (301). The fourth plate (301) is installed on the top surface of the reserved slot (126). An extension plate (103) is provided on one side of the pressure support (102). An air pump (302) is provided inside the drive frame (200). The telescopic unit includes a second cylinder (213) installed on both sides of the second middle beam (113). A second piston is slidably connected inside the second cylinder (213). 214), a second push rod (215) is fixedly connected to the second piston (214), a third plate (216) is fixedly connected to one end of the second push rod (215), a second spring (217) is sleeved on the second push rod (215), the two ends of the second spring (217) abut against the second cylinder (213) and the third plate (216) respectively, the air pump (302) is electrically connected to the sensor assembly (300), and the output end of the air pump (302) is connected to the second cylinder (213) through the first air pipe (209).

4. The steel structure splicing bridge as described in any one of claims 1-3, characterized in that: A cross-type telescopic rod (104) is connected between the two extension plates (103).

5. The steel structure splicing bridge as described in any one of claims 1-3, characterized in that: Anchor bars (125) are provided in the reserved groove (126). An anchor plate (120) is welded on the side beam (111). The anchor bars (125) are fixed to the side beam (111) through the anchor plate (120). Reinforcing bars are inserted between the anchor bars (125) and the pre-embedded reinforcing bars (119). The anchor plate (120) is provided with a first groove (121). The inner side of the first groove (121) has a second groove (122). The side beam (111) The bottom has a third groove (123) corresponding to the second groove (122). When the bottom of the side beam (111) is inserted into the first groove (121), the third groove (123) is aligned with the second groove (122). A reinforcing rib (124) is inserted between the third groove (123) and the second groove (122). The reinforcing rib (124) is welded between the third groove (123) and the second groove (122).

6. The steel structure splicing bridge as described in claim 1, characterized in that: A first pressure plate (400) and a second pressure plate (500) are respectively connected to the first bridge body (100) and the second bridge body (101). The first pressure plate (400) is elastically connected to the (100) through a first elastic member (403), and the second bridge body (101) is elastically connected to the second pressure plate (500) through a second elastic member (502). The bottom of the first pressure plate (400) and the second pressure plate (500) are respectively connected to a first filler. The first filling block (401) and the second filling block (501) are in the shape of an inverted trapezoid. The first filling block (401) and the second filling block (501) are located between the second middle beam (113) and the first middle beam (112), respectively. When the first filling block (401) and the second filling block (501) move downward, the first middle beam (112) located on both sides of the second middle beam (113) moves closer to the second bridge body (101).

7. The steel structure splicing bridge as described in claim 5, characterized in that: The aperture shape formed by the third groove (123) and the second groove (122) is circular, rectangular or triangular.

8. The steel structure splicing bridge as described in claim 1, characterized in that: The support beam (107) is provided with a positioning hole (110), and the displacement control box (105) has a support block corresponding to the positioning hole (110) on its inner side. The positioning hole (110) prevents the support beam (107) from falling off the displacement control box (105).

9. A splicing method for a steel structure splicing bridge as described in claim 5, characterized in that: First, reserved slots (126) are opened between the segmented bridge sections, and pre-embedded steel bars (119) are embedded at equal intervals in the reserved slots (126). Then, bearing bearings (102) and displacement control boxes (105) are installed at equal intervals. Multiple support ball seats (115), multiple anchor hangers (116), support beams (107) and sliding seats (108) are installed between the symmetrical displacement control boxes (105) to form a displacement system. Then, the side beams (111) and anchor plates (12) are connected. 0) Welding: Weld the first middle beam (112) and the second middle beam (113) to the anchor hanger (116), and then weld them to the side beam (111) through multiple anchor steel bars (125) and anchor plates (120) and install them in the reserved groove (126) and fix them with the pre-embedded steel bars (119) by steel bars. Pour concrete into the reserved groove (126), and finally install the drive component on the displacement system to adjust the relative position of the first middle beam (112) and the second middle beam (113).

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