Ficus microcarpa-shaped arched cable-stayed combined system footbridge

Abstract

The invention discloses a ficus-microcarpa-shaped arched cable-stayed combined system foot bridge which is characterized in that tree-trunk-shaped branch supporting frames are combined with arched cable-stayed structures, branches of the supporting frames are connected with arch ribs to form multidirectional stable support, loads are effectively dispersed, and the landscape effect is improved; the arch ribs are formed by splicing profile steel, connecting plates with reinforcing plates are welded to the ends of the profile steel, and accurate butt joint is achieved through the positioning assemblies: after the positioning pins are pre-positioned, inserting plates are connected with connecting plate clamping grooves in an inserted mode, and the splicing accuracy is ensured through bolt fastening; the temporary support is of a modularized support body splicing structure, the matched adjusting mechanism comprises a clamping assembly and an adjusting assembly, the clamping assembly drives a clamping plate to clamp profile steel through a jack, and the adjusting assembly achieves horizontal displacement and vertical inclination adjustment through the jack combination. According to the scheme, the problems that a traditional structure is insufficient in supporting stability, low in splicing precision and difficult to construct and adjust are solved, the structure is suitable for urban footbridge construction, and the construction efficiency and structural performance are remarkably improved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of bridge construction and relates to a banyan-shaped arch cable-stayed combined system pedestrian bridge. BACKGROUND

[0002] With the acceleration of urbanization process, the urban infrastructure construction is continuously improved. As an important part of the urban traffic system, the pedestrian bridge not only needs to meet the basic function of pedestrian traffic, but also gradually becomes part of the urban landscape. Among many types of pedestrian bridges, the arch cable-stayed bridge is favored due to its beautiful shape and good stress performance. However, there are still some problems to be solved in the design and construction process of the traditional arch cable-stayed pedestrian bridge.

[0003] In terms of structural design, the support structure of the traditional arch cable-stayed pedestrian bridge is relatively single, usually adopting simple column or frame support. This support mode is prone to stress concentration when facing complex geological conditions or large loads, which limits the stability and carrying capacity of the bridge structure. At the same time, the single support structure is also relatively monotonous in terms of landscape effect, which is difficult to meet the requirements of modern cities for the beauty of the bridge.

[0004] In the arch rib splicing construction process, the traditional method often lacks effective pre-positioning measures, which makes it difficult to ensure the accuracy when splicing adjacent steel, and is prone to problems such as misalignment and uneven gap. This not only affects the overall quality and aesthetics of the arch rib, but also may cause uneven stress distribution due to splicing errors, reducing the safety and durability of the bridge.

[0005] In the arch rib installation construction process, the traditional temporary support usually adopts a fixed structure, which is difficult to adjust flexibly according to the actual situation of the construction site and the installation height of the arch rib, resulting in low construction efficiency and increased cost. At the same time, deviation is prone to occur during hoisting, and the weight of the arch rib is large and difficult to adjust, which cannot meet the requirements of accurate installation of the arch rib. SUMMARY

[0006] Therefore, the application provides a banyan-shaped arch cable-stayed combined system pedestrian bridge to solve the problems of insufficient support stability, low splicing accuracy and difficult construction adjustment of the existing arch cable-stayed pedestrian bridge.

[0007] To achieve the above purpose, the application provides the following technical scheme:

[0008] A banyan-shaped arch cable-stayed combined system pedestrian bridge includes a plurality of piers, the top of the pier is provided with a plurality of spliced bridge box girders, the top of the middle pier is provided with a support frame, the support frame is in the shape of a trunk and has a plurality of branches, the top of the bridge box girder is provided with an arch rib, the branch end of the support frame is connected with the arch rib to support the arch rib.

[0009] The arch rib is composed of multiple steel sections, with connecting plates welded to both ends of the steel sections. A reinforcing plate is welded between the connecting plate and the steel section. The two connecting plates are fastened together by multiple second bolts and second nuts. It also includes a positioning assembly for pre-positioning two adjacent steel sections.

[0010] Two sets of temporary supports are set on both sides of the arch rib. The temporary supports are spliced ​​together from bottom to top from multiple frames.

[0011] The adjustment mechanism is set on the two upper frames and consists of an adjustment component and a clamping component. The clamping component is set above the adjustment component. After the steel section is clamped by the clamping component, the position of the steel section is adjusted by the adjustment component.

[0012] Furthermore, the positioning component includes a mounting plate. Multiple positioning pins that interlock with two steel profiles are welded to one side of the mounting plate. Two nut blocks are slidably disposed inside the mounting plate. A lifting plate is welded to one side of each nut block. Two slots are opened on the adjacent sides of the two lifting plates. Insert plates are interference-fitted into the slots. First slots are opened at the top and bottom of the connecting plate. A second slot is opened on one side of the insert plate that interlocks with the first slot. A driving component is provided on one side of the mounting plate, which drives the two sets of insert plates to interlock with the two connecting plates.

[0013] Furthermore, the insert plate and the steel section are fastened together by multiple first bolts and first nuts.

[0014] Furthermore, the adjustment assembly includes a base plate disposed within the two upper frames. An adjustment plate is movably disposed on the top of the base plate. Two second jacks are fixedly disposed on the top of the adjustment plate. Two first rotating seats are fixedly disposed on the top of the adjustment plate. A third jack is rotatably disposed within the first rotating seats via pins. A base plate is disposed above the adjustment plate. A second rotating seat corresponding to the third and second jacks is fixedly disposed at the bottom of the base plate. The output ends of the second and third jacks are rotatably connected to the corresponding second rotating seats via pins.

[0015] Furthermore, the clamping mechanism includes two rectangular holes on the top of the substrate, a second guide rod fixedly installed in the rectangular holes, two clamping plates slidably fitted on the outer walls of the two second guide rods, a limiting groove on the top of the substrate, two sliding rings slidably installed in the limiting groove, a fourth jack fixedly installed in the two sliding rings, and the two ends of the fourth jack being fixedly connected to the two clamping plates respectively.

[0016] Furthermore, the outer side of the clamping plate is provided with a groove corresponding to the first bolt on the outer side, in order to increase the contact area with the steel profile.

[0017] Furthermore, two springs are fitted on the outer wall of the second guide rod, with the two ends of the springs contacting the inner wall of one side of the rectangular hole and the outer side of the clamp plate through spring seats, respectively.

[0018] Furthermore, multiple steel balls are embedded in the top of the clamp.

[0019] Furthermore, the bottom of the base plate is provided with a positioning groove that engages with the frame, and two first guide rods are slidably provided through one side of the base plate. Both ends of the first guide rods are fixedly connected to the inner wall of the adjustment plate. First jacks are fixedly provided on both inner walls of the adjustment plate, and the output ends of the first jacks are fixedly connected to the base plate.

[0020] Furthermore, the driving component includes a screw rod mounted on one side of the mounting plate that rotates via a bearing, and two nut blocks are threaded onto the screw rod.

[0021] The beneficial effects of this invention are as follows:

[0022] 1. The banyan tree-shaped arched cable-stayed composite pedestrian bridge disclosed in this invention adopts a banyan tree-shaped support frame and an arched cable-stayed composite system. The support frame is trunk-shaped with multiple branches, which not only presents a unique banyan tree shape visually, enhancing the aesthetics and landscape value of the bridge, but also provides stable and multi-directional support for the arch ribs in terms of structure. It can effectively distribute the load borne by the arch ribs. Compared with the traditional single support structure, it significantly improves the overall stability and load-bearing capacity of the bridge, enabling it to better adapt to different geological conditions and load requirements, and extending the service life of the bridge.

[0023] 2. The banyan tree-shaped arched cable-stayed composite pedestrian bridge disclosed in this invention comprises multiple steel sections for the arch rib. Connecting plates are welded to both ends of the steel sections, and reinforcing plates are welded between the connecting plates and the steel sections, enhancing the strength and rigidity of the connection. Simultaneously, a positioning component is used to pre-position adjacent steel sections. The positioning pins in the positioning component enable rapid and accurate initial positioning of the steel sections. The insertion of the insert plate into the slot on the connecting plate further improves the positioning accuracy. After positioning, the insert plate is securely connected to the steel section using a first bolt and a first nut. Then, the connecting plates of adjacent steel sections are securely connected using a second bolt and a second nut. This ensures the robustness and accuracy of the arch rib splicing, effectively avoiding structural stress concentration and safety hazards caused by splicing errors, and improving the overall quality and reliability of the arch rib.

[0024] 3. The banyan tree-shaped arch cable-stayed composite pedestrian bridge disclosed in this invention features two sets of temporary supports during the arch rib construction process. These temporary supports are assembled from multiple frames from bottom to top, allowing for flexible adjustment based on the actual conditions of the construction site and the installation height of the arch rib. This facilitates easy assembly and disassembly. The adjustment mechanism further enhances the convenience of adjusting the position of the steel profile. The clamping components can quickly and stably clamp the steel profile, and the adjustment components, through the coordinated action of the first, second, and third jacks, can achieve precise adjustment of the steel profile in the horizontal, vertical, and inclined directions. Compared with traditional construction methods, the construction process of this bridge is more efficient and flexible, significantly shortening the construction cycle and reducing construction costs.

[0025] 4. The banyan tree-shaped arched cable-stayed composite pedestrian bridge disclosed in this invention uses a clamping plate in the clamping assembly driven by a fourth jack to achieve stable clamping of the steel profile. The groove on the outer side of the clamping plate corresponds to the first bolt on the outer side, increasing the contact area between the clamping plate and the steel profile and further improving the stability of the clamping. At the same time, the spring sleeved on the outer wall of the second guide rod plays a reset role. After clamping, the spring can also assist the clamping plate in resetting, facilitating the next clamping operation. Multiple steel balls embedded at the top of the clamping plate reduce the friction between the clamping plate and the steel profile, making the movement of the clamping plate within the steel profile smoother. It also reduces the impact of heat generated by friction on the steel profile and the clamping plate, improving construction safety and equipment durability.

[0026] 5. The banyan tree-shaped arched cable-stayed composite pedestrian bridge disclosed in this invention features a base plate in the adjustment assembly that is engaged with the frame via a positioning groove, ensuring a secure connection between the adjustment mechanism and the temporary support. The combined use of the first guide rod and the first jack enables precise horizontal movement of the adjustment plate. The second and third jacks are connected to the base plate via the first and second rotating seats, allowing for adjustment of the base plate angle as needed. This enables precise adjustment of the steel profile in both vertical and inclined directions, adapting to different construction environments and design requirements. It ensures that the arch rib alignment meets design standards, improving the overall performance and aesthetics of the bridge.

[0027] Other advantages, objectives, and features of the invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination, or may be learned from practice of the invention. The objectives and other advantages of the invention can be realized and obtained through the following description. Attached Figure Description

[0028] To make the objectives, technical solutions, and advantages of the present invention clearer, the preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, wherein:

[0029] Figure 1 This is a three-dimensional structural schematic diagram of the pedestrian bridge with a banyan tree-shaped arched cable-stayed composite system according to the present invention;

[0030] Figure 2 For the present invention Figure 1 Schematic diagram of the installation structure of the central arch rib and temporary support;

[0031] Figure 3 For the present invention Figure 2 Schematic diagram of a partial structure of the temporary support;

[0032] Figure 4 For the present invention Figure 3 Schematic diagram of the mounting structure of the middle base plate and the clamping plate;

[0033] Figure 5 For the present invention Figure 3 Schematic diagram of the middle base structure;

[0034] Figure 6 For the present invention Figure 2 Schematic diagram of the central arch rib splicing structure;

[0035] Figure 7 For the present invention Figure 6 Schematic diagram of the central positioning mechanism and arch rib structure;

[0036] Figure 8 For the present invention Figure 6 Another perspective structural diagram of the positioning mechanism;

[0037] Figure 9 This is a schematic diagram of the first construction phase of the banyan tree-shaped arched cable-stayed composite system pedestrian bridge of the present invention;

[0038] Figure 10 This is a schematic diagram of the second construction phase of the pedestrian bridge with the banyan tree-shaped arch cable-stayed composite system of the present invention;

[0039] Figure 11 This is a schematic diagram of the third construction phase of the pedestrian bridge with the banyan tree-shaped arch cable-stayed composite system of the present invention;

[0040] Figure 12 This is a schematic diagram of the fourth construction phase of the pedestrian bridge with the banyan tree-shaped arch cable-stayed composite system of the present invention;

[0041] Figure 13 This is a schematic diagram of the fifth construction phase of the pedestrian bridge with the banyan tree-shaped arch cable-stayed composite system of the present invention.

[0042] Reference numerals: 1. Pier; 2. Bridge box girder; 3. Support frame; 4. Arch rib; 41. Steel section; 42. Connecting plate; 421. Reinforcing plate; 43. First slot; 44. Insert plate; 45. Second slot; 46. First bolt; 47. First nut; 48. Second bolt; 49. Second nut; 5. Temporary support; 51. Frame body; 6. Base plate; 61. Positioning slot; 62. First guide rod; 63. First jack; 7. 8. Adjusting plate; 9. Second jack; 10. First rotating seat; 11. Third jack; 12. Second rotating seat; 13. Base plate; 14. Clamping plate; 15. Groove; 16. Steel ball; 17. Rectangular hole; 18. Second guide rod; 19. Spring; 20. Limiting groove; 21. Sliding ring; 22. Fourth jack; 23. Mounting plate; 24. Lifting plate; 25. Screw; 26. Slot; 27. Nut block; 28. Positioning pin. Detailed Implementation

[0043] The following specific examples illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention.

[0044] like Figures 1-8 The banyan tree-shaped arched cable-stayed composite pedestrian bridge shown in the figure is mainly composed of multiple piers 1, bridge box beams 2, support frames 3, arch ribs 4, temporary supports 5, and adjustment mechanisms.

[0045] Multiple piers 1 are spaced apart at the bridge site, and each pier 1 is topped with multiple spliced ​​bridge box girders 2. The bridge box girders 2 are precast components, spliced ​​on-site using high-strength bolts or welding. A support frame 3, shaped like a tree trunk with multiple branches, is located atop the central pier 1. Its shape mimics the branch structure of a banyan tree, providing both aesthetic appeal and stable support. The support frame 3 is securely connected to the pier 1 via steel bars embedded within it, ensuring its stability.

[0046] The top of the bridge box girder 2 is equipped with an arch rib 4, which is composed of multiple steel sections 41. The steel sections 41 are made of Q345B steel, and their specifications are determined according to the bridge's design load and span. For example, the cross-sectional dimensions of the steel section 41 can be H400×200×8×13 (height×width×web thickness×flange thickness). Connecting plates 42 are welded to both ends of the steel section 41, and reinforcing plates 421 are welded between the connecting plates 42 and the steel section 41. The reinforcing plates 421 are 10mm thick and are used to enhance the strength of the connection. The two connecting plates 42 are fastened together by multiple second bolts 48 and second nuts 49. The second bolts 48 are M24 high-strength bolts with a tensile strength of not less than 800MPa to ensure the reliability of the connection.

[0047] To facilitate the splicing of adjacent steel sections 41, a positioning assembly for pre-positioning two adjacent steel sections 41 is also provided. The positioning assembly includes a mounting plate 22, which is made of 25mm thick steel plate. Two lifting rings are threaded on the top of the mounting plate 22, enabling it to be used with a crane to position the two steel sections 41 in the air. Multiple positioning pins 28 are welded to one side of the mounting plate 22, which are inserted into the two steel sections 41. The positioning pins 28 have a diameter of 20mm and a length of 50mm, and their material is the same as that of the steel sections 41. Two nut blocks 27 are slidably provided inside the mounting plate 22. A lifting plate 23 is welded to one side of the nut blocks 27. Two slots 26 are opened on the adjacent sides of the two lifting plates 23. Insert plates 44 are interference-fitted into the slots 26. At the same time, in order to ensure the fixation of the insert plates 44, an electromagnet block can be installed in the slot 26 to fix the insert plates 44 by magnetic force.

[0048] The connecting plate 42 has a first slot 43 at both its top and bottom, and the insert plate 44 has a second slot 45 on one side that engages with the first slot 43. Through the cooperation of the first slot 43 and the second slot 45, the insert plate 44 and the connecting plate 42 are inserted into each other, allowing for pre-positioning and fixing of the two connecting plates 42. A driving component is provided on one side of the mounting plate 22. The driving component includes a screw 24 rotatably mounted on one side of the mounting plate 22 via a bearing. The screw 24 is a bidirectional screw, and two nut blocks 27 are threaded onto two threaded sections of the screw 24. The top of the screw 24 has a 300mm diameter handwheel for manual rotation or rotation using an electric wrench. When the screw 24 is rotated, the two nut blocks 27 move towards or away from each other along the screw 24, thereby moving the lifting plate 23 and the insert plate 44, enabling the insertion or separation of the insert plate 44 from the connecting plate 42. The insert plate 44 and the steel section 41 are fastened together by multiple first bolts 46 and first nuts 47. The first bolts 46 are M20 high-strength bolts, which can further strengthen the connection strength of the two steel sections 41.

[0049] Two sets of temporary supports 5 are respectively set on both sides of the arch rib 4. The temporary supports 5 are assembled from multiple frame bodies 51 from bottom to top. The frame bodies 51 are steel pipe scaffolding with a diameter of 48mm and a wall thickness of 3.5mm. The frame bodies 51 are connected by fasteners or flanges to ensure the overall stability of the temporary supports 5. The height of the temporary supports 5 is determined according to the installation height of the arch rib 4. During construction, the temporary supports 5 serve to support the arch rib 4 and provide pre-positioning.

[0050] The adjustment mechanism is located on the two upper frames 51 and consists of an adjustment assembly and a clamping assembly.

[0051] The adjustment assembly includes a base plate 6 housed within the two upper frame bodies 51. The bottom of the base plate 6 has a positioning groove 61 that engages with the frame body 51. The width of the positioning groove 61 matches the diameter of the steel pipe of the frame body 51, ensuring a secure connection between the base plate 6 and the frame body 51. Two first guide rods 62 are slidably mounted through one side of the base plate 6, with both ends of the first guide rods 62 fixedly connected to the inner wall of the adjustment plate 7. First jacks 63 are fixedly mounted on the inner walls of both sides of the adjustment plate 7, with their output ends fixedly connected to the base plate 6. By controlling the extension and retraction of the first jacks 63, the adjustment plate 7 can be moved horizontally. The first jacks 63 are QYL20 type hydraulic jacks with a stroke of 150mm and a lifting force of 20 tons.

[0052] Two second jacks 8 are fixedly mounted on the top of the adjusting plate 7, and two first rotating seats 9 are also fixedly mounted on the top of the adjusting plate 7. A third jack 10 is rotatably mounted inside the first rotating seats 9 via pins. A base plate 12 is provided above the adjusting plate 7, and a second rotating seat 11 corresponding to the third jack 10 and the second jack 8 is fixedly mounted on the bottom of the base plate 12. The output ends of the second jack 8 and the third jack 10 are rotatably connected to the corresponding second rotating seat 11 via pins. By controlling the extension and retraction of the second jack 8 and the third jack 10, the base plate 12 can be adjusted in the vertical and inclined directions, thereby adjusting the position of the steel profile 41. The two second jacks 8 and the two third jacks 10 are QYL50 type hydraulic jacks with a stroke of 200mm and a lifting force of 50 tons.

[0053] The clamping assembly includes two rectangular holes 16 on the top of the base plate 12. Second guide rods 17 are fixedly installed within the rectangular holes 16, and two clamping plates 13 are slidably fitted onto the outer walls of the two second guide rods 17. A limiting groove 19 is formed on the top of the base plate 12, and two sliding rings 20 are slidably installed within the limiting groove 19. A fourth jack 21 is fixedly installed within the two sliding rings 20, and both ends of the fourth jack 21 are fixedly connected to the two clamping plates 13. By controlling the extension and retraction of the fourth jack 21, the two clamping plates 13 can move towards or away from each other, thereby clamping or releasing the steel profile 41. The fourth jack 21 is a QYL10 type with a stroke of 100mm and a lifting force of 10 tons. A groove 14 corresponding to the outer first bolt 46 is formed on the outer side of the clamping plate 13 to increase the contact area with the steel profile 41. After clamping, the first bolt 46 is located within the groove 14, improving the stability of the clamping. Multiple steel balls 15, each 10mm in diameter, are embedded in the top of the clamping plate 13. These balls reduce friction between the clamping plate 13 and the profile 41, lowering the coefficient of sliding friction to below 0.1, thus facilitating movement of the clamping plate 13 within the profile 41. Two springs 18 are fitted onto the outer wall of the second guide rod 17. The two ends of each spring 18 abut against the inner wall of one side of the rectangular hole 16 and the outer side of the clamping plate 13, respectively, through spring 18 seats. During the retraction of the fourth jack 21, the springs 18 act as a reset mechanism, driving the two clamping plates 13 to move closer together.

[0054] The construction process of this banyan tree-shaped arched cable-stayed composite pedestrian bridge is as follows: Figures 9-13 As shown, it includes the following steps:

[0055] S1, such as Figure 9 As shown, a construction trestle bridge, a pile foundation construction platform, pier 1, and a temporary cofferdam were erected.

[0056] S2, such as Figure 10 As shown, the construction includes pile foundations and abutments; construction includes pier 1, combined embankment and abutment structure, supports, etc.; and the erection of temporary supports for the main beam assembly.

[0057] S3, such as Figure 11 As shown, the bridge box girder 2 is hoisted; the bridge box girder 2 is welded into a whole.

[0058] S4, such as Figure 12 As shown, a support frame 3 and a temporary support 5 supporting the arch rib 4 are erected, and the two sets of temporary supports 5 are located on both sides of the support frame 3. After the erection is completed, a base plate 6 is placed on the two frames 51 at the top, so that the positioning groove 61 at the bottom of the base plate 6 is engaged with the frame 51.

[0059] Two corresponding steel sections 41 are spliced ​​together on the ground to form multiple arch ribs 4. The spliced ​​arch ribs 4 are placed on the top of the corresponding temporary support 5 by a crane, so that the bottom of the steel section 41 abuts against the two clamping plates 13 and the groove 14 corresponds to the first bolt 46 on the outside. The fourth jack 21 is activated to extend. During the extension of the fourth jack 21, the clamping plates 13 can be driven to move, so that one side of the clamping plate 13 abuts against the inside of the steel section 41. The fourth jack 21 is activated to extend, which can drive the clamping plate 13 on the other side to abut against the inside of the steel section 41, thus fixing the arch ribs 4.

[0060] When the second jack 8 and the third jack 10 are extended simultaneously, they can drive the base plate 12 to move upward. The upward movement of the base plate 12 can drive the clamping plate 13 to move upward, thereby adjusting the height of the arch rib 4. When the angle needs to be adjusted, the two third jacks 10 are extended, which can drive the base plate 12 to flip on top of the second jack 8 until the two adjacent arch ribs 4 are aligned.

[0061] The mounting plate 22 is lifted by a crane, the insert plate 44 is inserted into the corresponding slot 26, and the crane is moved to one side of the two arch ribs 4. The mounting plate 22 is pushed closer to the arch ribs 4 so that the positioning pin 28 is inserted into the mounting hole on one side of the arch rib 4, which can position the two arch ribs 4. The screw 24 is turned by an electric wrench. During the rotation of the screw 24, the two nut blocks 27 can be driven to move closer to each other. During the movement, the lifting plate 23 drives the upper and lower sets of insert plates 44 to move closer to each other, so that the insert plate 44 is inserted into the first slot 43, which limits the two connecting plates 42. Then, the two steel sections 41 are fastened by the second bolt 48 and the second nut 49.

[0062] After fastening is completed, the mounting plate 22 is removed from the arch rib 4, and the insert plate 44 is fixed to the two steel sections 41 using the first bolt 46 and the first nut 47. The arch rib 4 is then connected to the support frame 3 by bolts.

[0063] S5, such as Figure 13 As shown, temporary support 5 is dismantled, and the main beam support is dismantled; construction of bridge deck paving, landscaping and other ancillary facilities is carried out; and construction platforms such as trestle bridges are dismantled.

[0064] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A pedestrian bridge with a banyan tree-shaped arched cable-stayed composite system, characterized in that, The top of the pier (1) is provided with multiple spliced ​​bridge box girders (2). The top of the pier (1) in the middle is provided with a support frame (3) in the shape of a tree trunk with multiple branches. The top of the bridge box girder (2) is provided with an arch rib (4). The ends of the branches of the support frame (3) are connected to the arch rib (4) to support the arch rib (4). The arch rib (4) is composed of multiple steel sections (41), with connecting plates (42) welded to both ends of the steel sections (41). A reinforcing plate (421) is welded between the connecting plate (42) and the steel section (41). The two connecting plates (42) are fastened together by multiple second bolts (48) and second nuts (49). It also includes a positioning assembly for pre-positioning two adjacent steel sections (41). Two sets of temporary supports (5) are set on both sides of the arch rib (4). The temporary supports (5) are spliced ​​from bottom to top by multiple frames (51). The adjustment mechanism is set on the two frames (51) located above. It consists of an adjustment component and a clamping component. The clamping component is set above the adjustment component. After the steel section (41) is clamped by the clamping component, the position of the steel section (41) is adjusted by the adjustment component.

2. The banyan tree-shaped arched cable-stayed composite pedestrian bridge as described in claim 1, characterized in that, The positioning assembly includes a mounting plate (22), on one side of which are welded a plurality of positioning pins (28) that are inserted into two profiles (41). Two nut blocks (27) are slidably provided inside the mounting plate (22). A lifting plate (23) is welded to one side of the nut blocks (27). Two slots (26) are opened on the side of the two lifting plates (23) that are close to each other. Insert plates (44) are inserted into the slots (26) with interference fit. A first slot (43) is opened at the top and bottom of the connecting plate (42). A second slot (45) is opened on one side of the insert plate (44) that is inserted into the first slot (43). A driving component is provided on one side of the mounting plate (22). The driving component is used to drive the two sets of insert plates (44) to be inserted into the two connecting plates (42).

3. The banyan tree-shaped arched cable-stayed composite pedestrian bridge as described in claim 2, characterized in that, The insert plate (44) and the steel section (41) are fastened together by a plurality of first bolts (46) and first nuts (47).

4. The banyan tree-shaped arched cable-stayed composite pedestrian bridge as described in claim 1, characterized in that, The adjustment assembly includes a base plate (6) set in the two upper frames (51), an adjustment plate (7) is movably provided on the top of the base plate (6), two second jacks (8) are fixedly provided on the top of the adjustment plate (7), two first rotating seats (9) are fixedly provided on the top of the adjustment plate (7), a third jack (10) is rotatably provided in the first rotating seat (9) through a pin, a base plate (12) is provided above the adjustment plate (7), and a second rotating seat (11) corresponding to the third jack (10) and the second jack (8) is fixedly provided at the bottom of the base plate (12). The output ends of the second jack (8) and the third jack (10) are rotatably connected to the corresponding second rotating seat (11) through a pin.

5. The banyan tree-shaped arched cable-stayed composite pedestrian bridge as described in claim 4, characterized in that, The clamping mechanism includes two rectangular holes (16) on the top of the substrate (12), a second guide rod (17) is fixedly provided in the rectangular holes (16), two clamping plates (13) are slidably sleeved on the outer walls of the two second guide rods (17), a limiting groove (19) is provided on the top of the substrate (12), two sliding rings (20) are slidably provided in the limiting groove (19), a fourth jack (21) is fixedly provided in the two sliding rings (20), and the two ends of the fourth jack (21) are respectively fixedly connected to the two clamping plates (13).

6. The banyan tree-shaped arched cable-stayed composite pedestrian bridge as described in claim 5, characterized in that, The clamp (13) has a groove (14) on the outside corresponding to the first bolt (46) on the outside, which is used to increase the contact area with the steel section (41).

7. The banyan tree-shaped arched cable-stayed composite pedestrian bridge as described in claim 5, characterized in that, The outer wall of the second guide rod (17) is fitted with two springs (18), and the two ends of the springs (18) respectively abut against the inner wall of one side of the rectangular hole (16) and the outer side of the clamp (13) through the spring (18) seat.

8. The banyan tree-shaped arched cable-stayed composite pedestrian bridge as described in claim 5, characterized in that, The top of the clamp (13) is embedded with a plurality of steel balls (15).

9. The banyan tree-shaped arched cable-stayed composite pedestrian bridge as described in claim 4, characterized in that, The bottom of the base plate (6) is provided with a positioning groove (61) that engages with the frame (51). Two first guide rods (62) are slidably provided on one side of the base plate (6). Both ends of the first guide rods (62) are fixedly connected to the inner wall of the adjusting plate (7). The inner walls on both sides of the adjusting plate (7) are fixedly provided with first jacks (63). The output end of the first jacks (63) is fixedly connected to the base plate (6).

10. The banyan tree-shaped arched cable-stayed composite pedestrian bridge as described in claim 2, characterized in that, The drive component includes a screw (24) mounted on one side of the mounting plate (22) via a bearing, and two nut blocks (27) are threaded onto the screw (24).

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