Steel structure combined bridge

Abstract

The application discloses a steel structure combined bridge and relates to the field of bridges.The steel structure combined bridge comprises two end steel molds and a plurality of spliced steel molds arranged between the two end steel molds, a plurality of first holes are formed through the spliced steel molds, first pipes are arranged in the first holes, one end of the first pipe is slidably provided with a second pipe, one side of the second pipe is provided with an extrusion assembly used for driving the second pipe to slide, the extrusion assembly is arranged on the spliced steel mold, a first protrusion used for driving the extrusion assembly on the adjacent spliced steel mold to operate is arranged on the side of the spliced steel mold away from the end steel mold, a second hole used for inserting the second pipe is formed in the end steel mold, a second protrusion used for driving the extrusion assembly on the adjacent spliced steel mold to operate is arranged on the end steel mold, and an interface assembly used for conveniently pouring concrete into the first pipe and the second pipe is further arranged on the end steel mold, so that the welding points are reduced in the splicing process of the bridge manufacturing, and the connection is convenient.

Description

Technical Field

[0001] This application relates to the field of bridges, and in particular to a steel structure composite bridge. Background Technology

[0002] A steel structure bridge is a type of bridge where the main load-bearing structure is made of steel. Prefabricated steel bridges are widely used worldwide. The main design concept is to assemble a prefabricated steel bridge with a minimal number of unit components, capable of bearing various loads and spans, requiring only general medium-sized trucks for transportation, and in special circumstances, it can be entirely constructed by hand.

[0003] Steel structure bridges are typically prefabricated in a factory, then transported to the construction site for installation, and finally have a concrete bridge deck poured on top of the steel structure.

[0004] During the construction of existing steel structure bridges, various parts need to be assembled and then a concrete surface is poured on the bridge deck. During the assembly process, welding is usually carried out directly between adjacent parts. Due to the large number of welding points, the welding work prolongs the production cycle. However, if each part is not welded completely, it will lead to instability of the bridge. Summary of the Invention

[0005] To reduce the number of welding points, speed up the bridge construction period, and ensure the stability of the steel structure bridge, this application provides a composite steel structure bridge.

[0006] The steel structure composite bridge provided in this application adopts the following technical solution:

[0007] A composite steel structure bridge includes an end steel mold and several splicing steel molds disposed on one side of the end steel mold. Several first holes are formed through the splicing steel molds, and a first pipe is installed in each of the first holes. A second pipe is slidably disposed at one end of each first pipe. An extrusion assembly for driving the second pipe to slide is disposed on one side of the second pipe. The extrusion assembly is disposed on the splicing steel mold. A first protrusion for driving the extrusion assembly on the adjacent splicing steel mold is disposed on the side of the splicing steel mold away from the end steel mold. The end steel mold has a second hole for inserting the second pipe. The end steel mold also has a second protrusion for driving the extrusion assembly on the adjacent splicing steel mold to operate. An interface assembly for facilitating the pouring of concrete into the first and second pipes is also provided on the end steel mold.

[0008] By adopting the above technical solution, in the actual installation process, the end steel mold at one end of the bridge is pre-assembled with one of the splicing steel molds. During the assembly process, the second protrusion abuts against the extrusion component, causing the second pipe to extend along the axial direction of the first pipe and be inserted into the second hole, thereby combining the end steel mold with the adjacent splicing steel mold. When two adjacent splicing steel molds are combined, the first protrusion extrudes the extrusion component on the adjacent splicing steel mold, causing the second pipe on the splicing steel mold to extend and be inserted into the first hole of another splicing steel mold, thereby achieving sequential connection. Finally, concrete is poured into the second hole to achieve a stable connection.

[0009] Optionally, the extrusion assembly includes a first rack sliding on the splicing steel mold, a gear rotatably connected to the splicing steel mold, and a second rack sliding on the splicing steel mold. The side wall of the splicing steel mold has an insertion groove, and the inner wall of the insertion groove has an installation cavity communicating with a first hole. The first rack slides in the insertion groove, the second rack slides in the installation cavity, the gear is rotatably connected in the installation cavity, and both the first and second racks mesh with the gear. The second rack is fixedly connected to the second tube. A locking component for limiting the sliding of the second tube is also provided at the insertion groove.

[0010] By adopting the above technical solution, the second protrusion extends into the insertion groove to squeeze the first rack to move, the gear meshes with the second rack to move, thereby driving the second tube to move in the opposite direction of the first rack, and finally realizing the second tube sliding out along the axial direction of the first tube.

[0011] Optionally, the snap-fit ​​component includes a first ball head, a guide rod fixedly connected to the first ball head, and a first spring disposed on the guide rod. A guide groove is provided on the inner wall of the insertion slot. The guide rod slides in the guide groove. One end of the first spring is fixed to the end of the guide rod, and the other end is fixed to the inner wall of the guide groove. A first slot is provided on the first rack, and the first ball head can be embedded in the first slot.

[0012] By adopting the above technical solution, during the movement of the first rack, the first ball head is embedded in the first groove under the action of the first spring, making it difficult for the first rack to move, thereby making it difficult for the second tube to extend or retract, thus ensuring the stability of the connection.

[0013] Optionally, the first protrusion is provided with a second groove at even intervals around its periphery, and a wedge is hinged in the second groove. The thinner end of the wedge is hinged to the end of the second groove facing the first rack, and a second spring is fixed to the other end of the wedge. The end of the second spring away from the wedge is fixed to the inner wall of the second groove, and a retaining ring is provided in the insertion groove.

[0014] By adopting the above technical solution, during the process of the first protrusion being inserted into the insertion groove, the second spring is squeezed under the action of the inclined surface of the inclined block, and the inclined block is fully embedded in the second groove, thereby ensuring that the first protrusion is smoothly inserted into the insertion groove. When the inclined block is fully inserted into the insertion groove, under the action of the second spring, the thicker end of the inclined block abuts against the retaining ring, making it difficult for the first protrusion to detach from the insertion groove.

[0015] Optionally, a third spring is provided in the insertion slot, with one end of the third spring fixed to the inner wall of the insertion slot and the other end fixed to the end side wall of the first rack.

[0016] By adopting the above technical solution, it is difficult for the second tube to extend beyond the first tube in the initial state, thus reducing the damage to the second tube in the initial state.

[0017] Optionally, a plurality of connecting grooves are evenly spaced on the side wall of the second tube, and a second ball head is slidably disposed in the connecting groove. A fourth spring is fixed on the second ball head, and the other end of the fourth spring is fixed in the connecting groove. In the initial state, the second ball head protrudes out of the outside of the second tube.

[0018] By adopting the above technical solution, when the second tube is inserted into the second hole, the second ball head abuts against the inner wall of the second hole, thereby reducing the phenomenon of the second tube detaching from the second hole.

[0019] Optionally, a third groove for embedding the second ball head is provided on the inner wall of the second hole, and a fourth groove for embedding the second ball head is provided on the inner wall of the end of the first tube away from the second tube.

[0020] By adopting the above technical solution, the stability of the connection between the second tube and the second hole is further improved.

[0021] Optionally, the interface component includes a horizontal tube pre-installed inside the end steel mold, a connecting pipe disposed at the end of the horizontal tube and connected to the second hole, the horizontal tube being connected to the connecting pipe, and a delivery valve connected to the horizontal tube being disposed on the end steel mold.

[0022] By adopting the above technical solution, after the entire bridge is spliced, cement is injected into the delivery valve by a cement pump truck. The injected cement enters the second pipe and the first pipe through the connecting pipe along the horizontal pipe. After the cement solidifies, it fixes several first and second pipes together, ensuring the stability of the bridge.

[0023] In summary, this application includes at least one of the following beneficial technical effects:

[0024] 1. The reduction in welding points and welding work makes bridge assembly more convenient. In terms of stability, the stability of the entire bridge is ensured through the first pipe, the second pipe, and the final concrete pouring. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of a steel structure bridge formed by assembling the end steel mold and the splicing steel mold.

[0027] Figure 2 This is a partial structural schematic diagram of this application, mainly used to show the structure inside the end steel mold.

[0028] Figure 3 This is a schematic diagram of the back of the splicing steel mold, mainly used to show the first tube and the first protrusion.

[0029] Figure 4 This is a sectional view of the splicing steel mold in this application, mainly used to show the extrusion assembly.

[0030] Figure 5 This is a schematic diagram of the back of the end steel mold.

[0031] Figure 6 This is a structural diagram of the extrusion assembly, mainly used to illustrate the snap-fit ​​component.

[0032] Figure 7 This is a schematic diagram of the connection structure between the first pipe and the second pipe in this application.

[0033] Reference numerals: 1. End steel mold; 2. Splicing steel mold; 3. First hole; 4. First tube; 5. Second tube; 6. Extrusion assembly; 7. First protrusion; 8. Second hole; 9. Second protrusion; 10. Interface assembly; 11. First rack; 12. Gear; 13. Second rack; 14. Insertion groove; 15. Mounting cavity; 16. Snap-fit ​​component; 17. First ball head; 18. Guide rod; 19. First spring; 20. Guide groove; 21. First groove; 22. Second groove; 23. Wedge block; 24. Second spring; 25. Retaining ring; 26. Third spring; 27. Connecting groove; 28. Second ball head; 29. ​​Fourth spring; 30. Third groove; 31. Fourth groove; 32. Horizontal tube; 33. Connecting tube; 34. Conveying valve. Detailed Implementation

[0034] The following is in conjunction with the appendix Figure 1-7 This application will be described in further detail.

[0035] This application discloses a steel structure composite bridge.

[0036] Reference Figure 1 A composite steel structure bridge includes an end steel mold 1 and splicing steel mold 2. In this embodiment, there is one end steel mold 1. The number of splicing steel molds 2 is selected according to the set length of the bridge, and several splicing steel molds 2 are arranged on one side of the end steel mold 1.

[0037] Reference Figure 1 , Figure 2 and Figure 3 To facilitate rapid assembly between the end steel mold 1 and the splicing steel mold 2, several first holes 3 are provided on one side of the splicing steel mold 2. The first holes 3 penetrate the splicing steel mold 2, and a first tube 4 is fixedly installed inside the first holes 3. A second tube 5 is slidably disposed inside the cavity of the first tube 4. When the second tube 5 is completely slid out of the first tube 4, one end of the second tube 5 can extend out of the splicing steel mold 2.

[0038] Reference Figure 4 An extrusion assembly 6 is provided near the second tube 5 to drive the second tube 5 out of the splicing steel mold 2. The extrusion assembly 6 is mounted on the splicing steel mold 2. The extrusion assembly 6 includes a first rack 11, a gear 12, and a second rack 13. An insertion groove 14 is provided on the splicing steel mold 2, and an installation cavity 15 is provided on the inner wall of the insertion groove 14. The installation cavity 15 is connected to the first hole 3. The first rack 11 is slidably disposed in the insertion groove 14, the gear 12 is rotatably connected in the installation cavity 15, and the second rack 13 is slidably disposed in the installation cavity 15 and is fixedly connected to the outer wall of the second tube 5.

[0039] Reference Figure 4 and Figure 5 The first rack 11 and the second rack 13 are located on both sides of the gear 12, and are arranged opposite to each other. Both the first rack 11 and the second rack 13 mesh with the gear 12. A second protrusion 9 is provided on the side wall of the end steel mold 1. The second protrusion 9 is inserted into the inner cavity of the insertion groove 14 of the splicing steel mold 2, thereby pushing the first rack 11, so that the gear 12 rotates and drives the second rack 13 to move. The first rack 11 and the second rack 13 move in opposite directions, thereby driving the second tube 5 to extend out of the outside of the splicing steel mold 2.

[0040] Reference Figure 1 and Figure 4A first protrusion 7 is provided on the side of the splicing steel mold 2 away from the first insertion groove 14 for insertion into the insertion groove 14. By inserting the first protrusion 7 into the insertion groove 14 on the adjacent splicing steel mold 2, the extended second tube 5 is inserted into the inner cavity of the first hole 3 of another splicing steel mold 2, thereby realizing the interconnection between the two adjacent splicing steel molds 2.

[0041] Reference Figure 4 , Figure 6 and Figure 7 To ensure the stability of the connection between the end steel mold 1 and the splicing steel mold 2, a locking component 16 is provided at the insertion groove 14 to limit the slippage of the second tube 5. The locking component 16 includes a first ball head 17, a guide rod 18, and a first spring 19. A guide groove 20 is provided on the inner wall of the insertion groove 14, and the guide rod 18 slides in the guide groove 20. The sliding direction of the guide rod 18 is perpendicular to the sliding direction of the first rack 11. One end of the first spring 19 is fixed to the end of the guide rod 18, and the other end of the first spring 19 is fixed to the inner wall of the guide groove 20. The first ball head 17 is fixedly installed on the end of the guide rod 18 that extends out of the guide groove 20. A first groove 21 is provided on the side wall of the first rack 11, and the first ball head 17 can be embedded in the first groove 21.

[0042] Reference Figure 4 To ensure the stability of the connection, a third spring 26 is provided inside the insertion slot 14. One end of the third spring 26 is fixed to the inner wall of the insertion slot 14, and the other end of the third spring 26 is fixed to the end side wall of the first rack 11. Thus, without the action of external force, the first rack 11 is difficult to slide freely.

[0043] Reference Figure 6 and Figure 7 Meanwhile, several second grooves 22 are evenly spaced around the first protrusion 7, and wedge-shaped blocks 23 are provided in the second grooves 22. The inner cavity shape of the second groove 22 is the same as that of the wedge 23. The thinner end of the wedge 23 is hinged to the end of the second groove 22 away from the splicing steel mold 2. A second spring 24 is fixedly provided at the other end of the wedge 23, and the end of the second spring 24 away from the wedge 23 is fixed in the inner cavity of the second groove 22. When the first protrusion 7 is inserted into the slot, a retaining ring 25 is provided in the insertion groove 14 to resist the wedge 23. In the initial state, when the wedge 23 passes through the retaining ring 25, the wedge 23 is squeezed into the second groove 22. When the wedge 23 completely passes through the retaining ring 25, under the action of the second spring 24, the thicker ends of several wedges 23 are raised and abut against the side wall of the retaining ring 25, so that the first protrusion 7 is difficult to pull out.

[0044] Reference Figure 7To further ensure the stability of the connection, several evenly spaced connecting grooves 27 are formed on the side wall of the end of the second tube 5 extending beyond the first tube 4, and a second ball head 28 is provided within each connecting groove 27. The second ball head 28 can slide within the connecting groove 27, and the direction of sliding of the second ball head 28 is perpendicular to the axis of the second tube 5. A fourth spring 29 is fixed to the side wall of the second ball head 28, and the end of the fourth spring 29 away from the second ball head 28 is fixed inside the cavity of the connecting groove 27.

[0045] Reference Figure 5 and Figure 7 A second hole 8 for inserting the second tube 5 is provided on the side wall of the end steel mold 1. A third groove 30 for embedding the second ball head 28 is provided on the inner wall of the second hole 8. A fourth groove 31 for embedding the second ball head 28 is provided on the port of the first tube 4 of the single splicing steel mold 2. The fourth groove 31 is located at the end of the first tube 4 away from the second tube 5.

[0046] Reference Figure 1 , Figure 2 and Figure 3 To make the assembled bridge more stable, an interface component 10 is provided on the end steel mold 1 to facilitate the pouring of concrete into the first pipe 4 and the second pipe 5. The interface component 10 includes a horizontal pipe 32 and a connecting pipe 33 pre-installed in the inner cavity of the end steel mold 1. The number of connecting pipes 33 is equal to the number of second pipes 5, and the inner cavity of the connecting pipe 33 is connected to the inner cavity of the second pipe 5. The connecting pipe 33 is connected to the end of the horizontal pipe 32 and is in communication with the horizontal pipe 32. A delivery valve 34 is provided on the horizontal pipe 32. After the final splicing is completed, a cement pump truck is connected to the delivery valve 34 and the delivery valve 34 is opened, so that cement enters the first pipe 4 and the second pipe 5 along the horizontal pipe 32 and the connecting pipe 33. After the cement solidifies, it forms a stable connection between several splicing steel molds 2 and one end steel mold 1, ensuring the stability of the bridge.

[0047] Unless otherwise defined, the technical or scientific terms used in this application shall have the ordinary meaning understood by one of ordinary skill in the art to which this application pertains. The terms "first," "second," "third," and similar terms used in this application specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. The terms "a" or "an," and similar terms do not indicate a quantity limitation, but rather indicate the presence of at least one. The terms "comprising," "including," and similar terms mean that the elements or objects preceding "comprising" encompass the elements or objects listed following "comprising" or "including," and their equivalents, but do not exclude other elements or objects. "Above," "below," "left," "right," etc., are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0048] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A steel structure composite bridge, characterized by: The utility model relates to a steel mould for end part and a plurality of spliced steel moulds (2) are arranged on one side of the steel mould for end part, a plurality of first holes (3) are opened through the spliced steel mould (2), a first pipe (4) is installed in the first hole (3), a second pipe (5) is slidably arranged at one end of the first pipe (4), an extrusion assembly (6) for driving the second pipe (5) to slide is arranged on one side of the second pipe (5), the extrusion assembly (6) is arranged on the spliced steel mould (2), a first protrusion (7) for driving the extrusion assembly (6) on the adjacent spliced steel mould (2) to operate is arranged on the side of the spliced steel mould (2) away from the steel mould for end part (1), a second hole (8) for inserting the second pipe (5) is opened in the steel mould for end part (1), a second protrusion (9) for driving the extrusion assembly (6) on the adjacent spliced steel mould (2) to operate is arranged on the steel mould for end part (1), an interface assembly (10) for facilitating pouring concrete into the first pipe (4) and the second pipe (5) is further arranged on the steel mould for end part (1). The extrusion assembly (6) comprises a first rack (11) sliding on the spliced steel mould (2), a gear (12) rotatably connected to the spliced steel mould (2), and a second rack (13) sliding on the spliced steel mould (2), an insertion slot (14) is opened in the side wall of the spliced steel mould (2), an installation cavity (15) in communication with the first hole (3) is opened in the inner wall of the insertion slot (14), the first rack (11) slides in the insertion slot (14), the second rack (13) slides in the installation cavity (15), the gear (12) is rotatably connected in the installation cavity (15), and the first rack (11) and the second rack (13) are both engaged with the gear (12), the second rack (13) is fixedly connected with the second pipe (5), and a clamping component (16) for limiting the sliding of the second pipe (5) is further arranged at the insertion slot (14).

2. A steel composite bridge according to claim 1, wherein: The clamping component (16) comprises a first ball head (17), a guide rod (18) fixedly connected with the first ball head (17), and a first spring (19) arranged on the guide rod (18), a guide slot (20) is opened in the inner wall of the insertion slot (14), the guide rod (18) slides in the guide slot (20), one end of the first spring (19) is fixed to the end of the guide rod (18), and the other end is fixed to the inner wall of the guide slot (20), a first embedding groove (21) is opened in the first rack (11), and the first ball head (17) can be embedded in the first embedding groove (21).

3. A steel composite bridge according to claim 2, wherein: The first protrusion (7) is uniformly provided with a second embedding groove (22) around the circumferential side, an inclined block (23) is hingedly connected in the second embedding groove (22), one end of the inclined block (23) with a smaller thickness is hingedly connected to the end of the second embedding groove (22) facing the first rack (11), the other end of the inclined block (23) is fixedly connected with a second spring (24), one end of the second spring (24) away from the inclined block (23) is fixed to the inner wall of the second embedding groove (22), and a stop ring (25) is arranged in the insertion slot (14).

4. A composite bridge of steel construction according to claim 2, characterised in that: A third spring (26) is arranged in the insertion slot (14), one end of the third spring (26) is fixed on the inner wall of the insertion slot (14), and the other end is fixed on the end side wall of the first rack (11).

5. A composite bridge of steel construction according to claim 1, characterized in that: A plurality of connecting grooves (27) are uniformly and spacedly arranged on the side wall of the second tube (5), a second ball head (28) is slidably arranged in the connecting groove (27), a fourth spring (29) is fixed on the second ball head (28), the other end of the fourth spring (29) is fixed in the connecting groove (27), and in the initial state, the second ball head (28) partially protrudes outside the second tube (5).

6. A steel composite bridge according to claim 5, wherein: A third embedding groove (30) for embedding the second ball head (28) is arranged on the inner wall of the second hole (8), and a fourth embedding groove (31) for embedding the second ball head (28) is arranged on the inner wall of the end of the first tube (4) away from the second tube (5).

7. A steel composite bridge according to claim 6, wherein: The interface assembly (10) comprises a cross tube (32) prearranged in the end steel mold (1), a connecting tube (33) arranged at the end of the cross tube (32) and communicated with the second hole (8), the cross tube (32) is communicated with the connecting tube (33), and the end steel mold (1) is provided with a delivery valve (34) communicated with the cross tube (32).

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