Modularized supporting frame for assembling double-tube arch bridge
By designing a modular support frame and utilizing components such as hydraulic telescopic rods and lifting mechanisms, the problem of alignment difficulties caused by lifting point deviations during hoisting was solved, achieving precise docking and stable support between the arch rib module and the arch foot, thus improving construction efficiency and safety.
Patent Information
- Application Number
- CN202511320542.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-16
- Publication Date
- 2025-11-14
AI Technical Summary
In long-span bridges and large arch structures, the hoisting of arch ribs is often hampered by wind and suspension, which can cause deviations in the hoisting points. This makes it difficult to align the ribs with the arch foot or adjacent sections, making it hard to ensure axis alignment and end face fit. Traditional supports cannot be adjusted and require on-site cutting or padding, which is time-consuming and poses safety hazards.
The modular support frame includes components such as bidirectional hydraulic telescopic rods, clamps, sliding arms, stop bars, and hydraulic cylinders. It actively clamps the arch rib modules to suppress swaying, and adjusts the angle through the lifting mechanism and the stop bar to achieve precise alignment and stable support.
It reduces the difficulty of manual alignment, avoids collision damage, improves assembly efficiency, reduces repeated adjustments, and ensures the safety and stability of construction.
Smart Images
Figure CN120945801A_ABST
Abstract
Description
Technical Field
[0001] This invention belongs to the technical field of arch bridge construction, and specifically discloses a modular support frame for assembling a double-tube arch bridge. Background Technology
[0002] In long-span bridges, tunnels, and large arch structures, the multi-segment arch rib serves as the core load-bearing structure, and its construction and installation quality directly determines the safety and durability of the overall structure. Due to limitations in transportation conditions, hoisting capacity, and structural stress design, arch ribs typically need to be prefabricated in multiple segments and then assembled on-site to form a whole. However, the connection of one segment of the arch rib to the arch foot presents the following key technical challenges.
[0003] When hoisting arch ribs with a crane, the lifting points may deviate due to wind and the ribs being suspended in mid-air, causing swaying and making it difficult to align with the arch foot or adjacent sections. This can even lead to collision damage and make it impossible to guarantee axis alignment and end face fit. Traditional supports are mostly fixed or temporary supports, which cannot be adjusted and cannot compensate for prefabrication errors and cumulative installation deviations. They require on-site cutting or shim filling, and the support position and angle need to be repeatedly adjusted during the splicing process. This relies on manual measurement and mechanical coordination, and the connection of a single section can take up to several hours. Furthermore, it is difficult to guarantee the stability of the support and poses safety hazards.
[0004] Therefore, a modular support frame for assembling double-tube arch bridges is proposed to solve the above problems. Summary of the Invention
[0005] The purpose of this invention is to solve the problems existing in the background art, and to propose a modular support frame for assembling a double-tube arch bridge, including an arch foot, a connecting arch rib module, and a pre-embedded frame. One outer wall of the arch foot is set as an inclined surface. The pre-embedded frame is located on one side of the arch foot. First side frames are symmetrically installed on both sides of the outer wall of the pre-embedded frame. Second side frames are symmetrically installed on both sides of the outer wall of the pre-embedded frame away from the first side frames. A column is vertically connected to the upper end of the pre-embedded frame. A base rod is installed on the upper end of both second side frames. A top rod is fixedly installed on the upper end face. The top rod and the bottom rod are both inserted through the outside of the rod column. The outer side of one end of the top rod and the bottom rod are connected to a pressure plate through a fixed mounting seat. A mounting shell is fixedly connected to the outer side of the pressure plate. A bidirectional hydraulic telescopic rod is fixedly installed inside the mounting shell. The bottom of the connecting arch rib module abuts against the outer surface of one side of the pressure plate. One end of the connecting arch rib module abuts against the inclined surface of the arch foot. Both ends of the bidirectional hydraulic telescopic rod are provided with a covering mechanism that fits against the outer walls of the connecting arch rib module.
[0006] In the above technical solution, the covering mechanism further includes a sliding arm fixedly installed at one end of a bidirectional hydraulic telescopic rod, a frame arm fixedly installed on the outer wall of the mounting shell away from the pressure plate, one end of the sliding arm sliding outside the frame arm, and abutment rods symmetrically fixedly inserted inside the sliding arm, with a clamping plate installed at the ends of the two abutment rods away from the sliding arm.
[0007] In the above technical solution, the two first side frames are further provided with a cross seat on their upper surfaces. The cross seat is fitted around the outside of the rod column in the middle. Both upper surfaces of the cross seat are connected to a support seat through a lifting mechanism.
[0008] In the above technical solution, the lifting mechanism further includes a second hydraulic cylinder, the bottom of which is fixedly installed on the upper end face of the cross seat, and the telescopic end of the second hydraulic cylinder is fixedly connected to the lower end face of the support seat.
[0009] In the above technical solution, further, guide rods are vertically installed on both sides of the upper end face of the support base, and a fixing frame is installed on the upper end of the two guide rods. A rotating shaft is inserted inside the fixing frame, and a stop frame is rotatably installed outside the rotating shaft. Guide grooves are opened on both sides inside the stop frame, and a pin is inserted inside the two sets of guide grooves. Pin shafts are inserted inside the two ends of the pin away from the stop frame, and a stop-rotation mechanism is provided in the middle of the outside of the pin.
[0010] In the above technical solution, the anti-rotation mechanism further includes a movable sleeve that is rotatably fitted in the middle of the outside of the pin rod. A first hydraulic cylinder is fixedly installed at the lower end of the movable sleeve. Frame rods are symmetrically fixedly connected to one side of the outer surface of the support seat. The outer cylinder sleeve of the first hydraulic cylinder rotates between the two frame rods through an installed retaining pin.
[0011] In the above technical solution, further, a retaining seat is movably sleeved on the lower part of the outer side of one of the second side frames, and a fixed seat is symmetrically arranged on the lower part of the outer wall of the arch foot. An embedded part is arranged inside the fixed seat. A stabilizing frame is fixedly installed on the outer wall of both fixed seats. A retaining seat is arranged between the two stabilizing frames and near the lower end of one of the second side frames. A screw rod is inserted into the interior of the stabilizing frame, the retaining seat and the second side frame. Nuts are provided at both ends of the screw rod.
[0012] In the above technical solution, the embedded part further includes a number of reinforcing bolts, which are symmetrically installed in pairs inside the fixed seat, and the ends of the reinforcing bolts extend into the arch foot.
[0013] Compared with the prior art, the present invention has the following beneficial effects: 1. By using the bidirectional hydraulic telescopic rod, clamp, sliding arm, and stop bar, the clamp and sliding arm can be driven to move and actively clamp the lower part of the connecting arch rib module when lifting it. This suppresses the swaying caused by wind and ensures that the lower end of the connecting arch rib module abuts against the inclined surface of the arch foot, reducing the difficulty of manual alignment and avoiding collision damage.
[0014] 2. The second hydraulic cylinder can drive the support seat to move upward, so that the abutment inside the upper fixed frame can press against the lower surface of the upper side of the hoisting and connecting arch rib module. The frame rod at the support seat can enhance the angle rotation of the first hydraulic cylinder, so that the abutment can more adaptably fit the lower surface of the connecting arch rib module, assisting the connecting arch rib module to be assembled with the arch foot more stably, improving assembly efficiency and reducing repeated adjustments. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the support state of the device of the present invention between the arch foot and the connecting arch rib module; Figure 2 This is another perspective schematic diagram of the supporting state of the device of the present invention between the arch foot and the connecting arch rib module. Figure 3 This is a schematic diagram showing the construction status between the arch foot and one of the connecting arch rib modules of the present invention; Figure 4 This is a schematic diagram from another perspective showing the construction status between the arch foot and one of the connecting arch rib modules of the present invention. Figure 5 This is a schematic diagram of the connection structure between the support base, frame rod, guide rod, and fixing frame of the present invention; Figure 6 This is a schematic diagram from another perspective of the connection structure between the support base, frame rod, guide rod, and fixing frame of the present invention; Figure 7 This is a schematic diagram of the connection structure between the frame arm, sliding arm, stop bar, and mounting base of the present invention. Figure 8 This is a schematic diagram of the connection structure between the sliding arm, the frame arm, the stop bar, and the bidirectional hydraulic telescopic rod of the present invention; Figure 9 This is a schematic diagram of the connection structure between the first side frame, the second side frame, the cross seat, and the column of the present invention; Figure 10 This is a schematic diagram of the disassembled connection structure between the arch foot, the stabilizing frame, the screw, and the retaining seat of the present invention.
[0016] In the diagram: 1. Arch foot; 2. Connecting arch rib module; 3. Embedded frame; 4. First side frame; 5. Second side frame; 6. Fixed seat; 7. Top rod; 8. First hydraulic cylinder; 9. Fixed frame; 10. Frame rod; 11. Rod column; 12. Second hydraulic cylinder; 13. Horizontal seat; 14. Stabilizing frame; 15. Clamping plate; 16. Bottom rod; 17. Support seat; 18. Abutment frame; 19. Guide rod; 20. Sliding arm; 21. Abutment rod; 22. Frame arm; 23. Reinforcing bolt; 24. Rotating shaft; 25. Guide groove; 26. Pin shaft; 27. Pin rod; 28. Movable sleeve; 29. Pressure plate; 30. Mounting seat; 31. Mounting shell; 32. Two-way hydraulic telescopic rod; 33. Nut; 34. Screw; 35. Locking recess seat. Detailed Implementation
[0017] To better understand the above-mentioned objectives, features, and advantages of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.
[0018] Numerous specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and therefore the invention is not limited to the specific embodiments disclosed below.
[0019] like Figures 1-10 The modular support frame for assembling a double-tube arch bridge shown includes an arch foot 1, a connecting arch rib module 2, and a pre-embedded frame 3. One outer wall of the arch foot 1 is sloped. The pre-embedded frame 3 is located on one side of the arch foot 1. First side frames 4 are symmetrically installed on both sides of the outer wall of the pre-embedded frame 3. Second side frames 5 are symmetrically installed on both sides of the outer wall of the pre-embedded frame 3 away from the first side frames 4. A column 11 is vertically connected to the upper end of the pre-embedded frame 3. A bottom rod 16 is installed on the upper end of both second side frames 5. A top rod 7 is fixedly installed on the upper end of the bottom rod 16. The middle parts of both the top rod 7 and the bottom rod 16 are inserted outside the column 11. A pressure plate 29 is connected to the outer side of one end of both the top rod 7 and the bottom rod 16 via a fixed mounting base 30. 9. An installation shell 31 is fixedly connected to the outside. A bidirectional hydraulic telescopic rod 32 is fixedly installed inside the installation shell 31. The bottom of the connecting arch rib module 2 abuts against the outer surface of one side of the pressure plate 29. One end of the connecting arch rib module 2 abuts against the inclined surface of the arch foot 1. Both ends of the bidirectional hydraulic telescopic rod 32 are provided with a covering mechanism that fits and connects to both sides of the outer wall of the arch rib module 2. The covering mechanism includes a sliding arm 20 fixedly installed at one end of the bidirectional hydraulic telescopic rod 32. A frame arm 22 is fixedly installed on the outer wall of the installation shell 31 away from the pressure plate 29. One end of the sliding arm 20 slides outside the frame arm 22. Abutment rods 21 are symmetrically fixedly inserted inside the sliding arm 20. A clamping plate 15 is installed at the ends of the two abutment rods 21 away from the sliding arm 20. The connecting arch rib module 2 is a double steel pipe welded structure. Its lower outer surface abuts against the arc-shaped inner surface of the pressure plate 29 at 1 / 3 of its length from the end. The pressure plate 29 is an arc-shaped steel plate with an arc that matches the outer arc of the steel pipe of the connecting arch rib module 2. The end of the connecting arch rib module 2 is machined with a 30° inclined surface, which is completely fitted and abuts against the inclined surface of the arch foot 1 to achieve end positioning. The pre-embedded frame 3 is a frame composed of welded steel sections, which is fixed at the installation position by expansion bolts. Mounting base 30 is a thick steel plate, which is fixed to top rod 7 and bottom rod 16 with bolts. Pressure plate 29 is an arc-shaped steel plate. When connecting arch rib module 2 is hoisted, one side of its outer surface is in contact with the outer surface of pressure plate 29, and the bottom of one end is in contact with the inclined surface of arch foot 1. The sliding arm 20 is a rectangular steel arm structure. One inner surface is connected to the bidirectional hydraulic telescopic rod 32. At the same time, a sliding groove is opened inside the end near the frame arm 22. Therefore, the sliding arm 20 slides on the outside of the frame arm 22. Thick rubber pads can be added to the inner wall of the two clamping plates 15 that are close to each other to avoid damage when clamping the connecting arch rib module 2. During operation, the bidirectional hydraulic telescopic rod 32 extends and retracts, driving the sliding arm 20 to slide along the outside of the frame arm 22, causing the clamping plates 15 to move closer to or further away from the connecting arch rib module 2, so as to achieve clamping from both sides and suppress shaking during assembly.
[0020] A horizontal seat 13 is installed on the upper surface of the two first side frames 4. The middle part of the horizontal seat 13 is fitted outside the rod column 11. The upper surfaces of both sides of the horizontal seat 13 are connected to the support seat 17 through the lifting mechanism. The lifting mechanism includes a second hydraulic cylinder 12. The bottom of the second hydraulic cylinder 12 is fixedly installed on the upper surface of the horizontal seat 13. The telescopic end of the second hydraulic cylinder 12 is fixedly connected to the lower surface of the support seat 17. Guide rods 19 are vertically installed on both sides of the upper surface of the support seat 17. The upper ends of the two guide rods 19 are jointly installed with a fixing frame 9. like Figure 3 , Figure 4 , Figure 5 and Figure 9 As shown, the second hydraulic cylinder 12 can drive the support base 17 to rise and fall along the outside of the rod column 11, thereby pushing the upper fixed frame 9 so that the fixed frame 9 is close to the upper outer surface of the connecting arch rib module 2. The abutment 18 fits against the surface of the connecting arch rib module 2 to achieve stable support of the upper end of the connecting arch rib module 2; at the same time, it ensures that the inclined surface of the end of the connecting arch rib module 2 corresponds precisely to the inclined surface of the arch foot 1.
[0021] A rotating shaft 24 is inserted inside the fixed frame 9. A support frame 18 is rotatably installed outside the rotating shaft 24. Guide grooves 25 are opened on both sides inside the support frame 18. A pin 27 is inserted inside both sets of guide grooves 25. Pin shafts 26 are inserted inside the two ends of the pin 27 away from the support frame 18. A counter-rotation mechanism is set in the middle of the outside of the pin 27. The counter-rotation mechanism includes a movable sleeve 28 that is rotatably fitted in the middle of the outside of the pin 27. A first hydraulic cylinder 8 is fixedly installed at the lower end of the movable sleeve 28. Frame rods 10 are symmetrically fixedly connected to one side of the outer surface of the support base 17. The outer cylinder sleeve of the first hydraulic cylinder 8 rotates between the two frame rods 10 through the installed clamp. like Figure 5 and Figure 6 As shown, a rotating shaft 24 is horizontally inserted in the middle of the fixed frame 9. A rotatable abutment 18 is provided on the outside of the rotating shaft 24. Through holes are opened at both ends of the pin 27. The pin 26 is installed inside the pin 27 through the through holes, which restricts the pin 27 from displacing from the abutment 18. The movable sleeve 28 is a seamless steel pipe that can rotate relative to the pin 27. The first hydraulic cylinder 8 rotates between the two sets of frame rods 10 through the cylinder sleeve and the retaining shaft, so that the first hydraulic cylinder 8 can swing along the retaining shaft. When the first hydraulic cylinder 8 extends or retracts, it pushes the pin 27 to slide along the guide groove 25 through the movable sleeve 28, which drives the abutment 18 to rotate around the rotating shaft 24, thereby realizing the adjustment of the tilt angle of the connecting arch rib module 2.
[0022] One of the second side frames 5 is movably fitted with a recessed seat 35 on the lower part of its exterior. A fixed seat 6 is symmetrically arranged on the lower part of the outer wall of the arch foot 1. An embedded part is provided inside the fixed seat 6. A stabilizing frame 14 is fixedly installed on the outer wall of both fixed seats 6. A recessed seat 35 is provided between the two stabilizing frames 14 and near the lower end of one of the second side frames 5. A screw 34 is inserted into the interior of the stabilizing frame 14, the recessed seat 35 and the second side frame 5. Nuts 33 are provided at both ends of the screw 34. The embedded part includes several reinforcing bolts 23. Several reinforcing bolts 23 are symmetrically installed in pairs inside the fixed seat 6, and the ends of the reinforcing bolts 23 extend into the interior of the arch foot 1. like Figure 10 As shown, the recessed seat 35 is a U-shaped steel plate structure. During assembly, it is clamped against the lower end of the second side frame 5 and fixed between the two stabilizing frames 14 by the inserted screw 34. The external part is tightened by the nut 33, which enhances the force support on one side of the embedded frame 3 when assembling the connecting arch rib module 2 and the arch foot 1. The stabilizing frame 14 is embedded into the concrete of the arch foot 1 by the reinforcing bolt 23, which enhances the stability of the stabilizing frame 14 and ensures that the embedded frame 3 avoids foundation loosening when under stress.
[0023] Working principle: The stabilizing frame 14 on the lower outer side of the arch foot 1 is anchored by the reinforcing bolt 23 in the fixing seat 6. The stabilizing frame 14 and the locking seat 35 are locked to the outside of the second side frame 5 by the screw 34 and the nut 33, forming an anti-overturning triangular support, ensuring the overall stability of the embedded frame 3, and ensuring that the embedded frame 3 does not shift during the construction process. Subsequently, the crane hoisted the connecting arch rib module 2 to the inclined surface of the arch foot 1. The second hydraulic cylinders 12 on both sides of the horizontal seat 13 extended and retracted, driving the support seat 17 and guide rod 19 to rise and fall, which in turn caused the abutment frame 18 to rise and fall synchronously. The abutment frame 18 was used to make fine adjustments to the lower surface of the connecting arch rib module 2. Specifically, the extension of the first hydraulic cylinder 8 pushed the pin 27 to slide along the guide groove 25 of the abutment frame 18 through the movable sleeve 28, causing the abutment frame 18 to rotate around the rotating shaft 24, thereby adjusting the tilt angle of the connecting arch rib module 2 and causing the outer surface of one side of the abutment frame 18 to be adjusted. The surface of the connecting arch rib module 2 contacts the lower surface of the connecting arch rib module 2 to ensure the stability of one end when suspended. At the same time, the bidirectional hydraulic telescopic rod 32 inside the mounting shell 31 extends and retracts, driving the sliding arm 20 to slide along the outside of the frame arm 22, causing the clamping plate 15 at the end of the abutment rod 21 to hug the outer wall of the connecting arch rib module 2 from both sides, eliminating the shaking during the hoisting process and achieving lateral positioning. Together, they fix the connecting arch rib module 2 to the inclined surface of the arch foot 1 until the pre-embedded bolt is driven into the arch foot 1 through the bottom of the lower end of the connecting arch rib module 2 to complete the connection.
[0024] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention.
Claims
1. A modular support frame for assembling a double-tube arch bridge, comprising an arch foot (1), a connecting arch rib module (2), and a pre-embedded frame (3), characterized in that: The outer wall of one side of the arch foot (1) is set as a slope. The embedded frame (3) is set on one side of the arch foot (1). The first side frame (4) is symmetrically installed on both sides of the outer wall of the embedded frame (3). The second side frame (5) is symmetrically installed on both sides of the outer wall of the embedded frame (3) away from the first side frame (4). The upper end face of the embedded frame (3) is vertically connected to the column (11). The upper ends of the two second side frames (5) are jointly installed with the bottom rod (16). The upper end face of the bottom rod (16) is fixedly installed with the top rod (7). The middle parts of the top rod (7) and the bottom rod (16) are inserted through the column (11). Externally, the top rod (7) and the bottom rod (16) are connected to a pressure plate (29) by a fixed mounting base (30) on one side. A mounting shell (31) is fixedly connected to the outside of the pressure plate (29). A bidirectional hydraulic telescopic rod (32) is fixedly installed inside the mounting shell (31). The bottom of the connecting arch rib module (2) abuts against the outer surface of one side of the pressure plate (29). One end of the connecting arch rib module (2) abuts against the inclined surface of the arch foot (1). Both ends of the bidirectional hydraulic telescopic rod (32) are provided with a covering mechanism that fits against the outer walls of the connecting arch rib module (2).
2. The modular support frame for assembling a double-tube arch bridge according to claim 1, characterized in that: The covering mechanism includes a sliding arm (20) fixedly installed at one end of a bidirectional hydraulic telescopic rod (32). A frame arm (22) is fixedly installed on the outer wall of the mounting shell (31) away from the pressure plate (29). One end of the sliding arm (20) slides outside the frame arm (22). Abutment rods (21) are symmetrically fixedly inserted inside the sliding arm (20). A clamping plate (15) is installed at the ends of the two abutment rods (21) away from the sliding arm (20).
3. The modular support frame for assembling a double-tube arch bridge according to claim 1, characterized in that: The two first side frames (4) are equipped with a cross seat (13) on their upper surfaces. The cross seat (13) is fitted in the middle outside the rod (11). The upper surfaces of both sides of the cross seat (13) are connected to a support seat (17) through a lifting mechanism.
4. A modular support frame for assembling a double-tube arch bridge according to claim 3, characterized in that: The lifting mechanism includes a second hydraulic cylinder (12), the bottom of which is fixedly installed on the upper surface of the cross seat (13), and the telescopic end of the second hydraulic cylinder (12) is fixedly connected to the lower surface of the support seat (17).
5. A modular support frame for assembling a double-tube arch bridge according to claim 3, characterized in that: Guide rods (19) are vertically installed on both sides of the upper end face of the support base (17). A fixing frame (9) is installed on the upper end of the two guide rods (19). A rotating shaft (24) is inserted inside the fixing frame (9). A stop frame (18) is rotatably installed outside the rotating shaft (24). Guide grooves (25) are opened on both sides inside the stop frame (18). A pin (27) is inserted inside the two sets of guide grooves (25). A pin shaft (26) is inserted inside both ends of the pin (27) away from the stop frame (18). A stop-rotation mechanism is set in the middle of the outside of the pin (27).
6. A modular support frame for assembling a double-tube arch bridge according to claim 5, characterized in that: The anti-rotation mechanism includes a movable sleeve (28) that is rotatably fitted in the middle of the outside of the pin (27). A first hydraulic cylinder (8) is fixedly installed at the lower end of the movable sleeve (28). A support rod (10) is symmetrically fixedly connected to one side of the outer surface of the support base (17). The outer cylinder sleeve of the first hydraulic cylinder (8) rotates between the two support rods (10) through the installed clasp.
7. A modular support frame for assembling a double-tube arch bridge according to claim 1, characterized in that: A retaining seat (35) is movably sleeved on the lower part of the outer side of one of the second side frames (5). A fixed seat (6) is symmetrically arranged on the lower part of the outer wall of the arch foot (1). An embedded part is provided inside the fixed seat (6). A stabilizing frame (14) is fixedly installed on the outer wall of both fixed seats (6). A retaining seat (35) is provided between the two stabilizing frames (14) and near the lower end of one of the second side frames (5). A screw (34) is inserted into the interior of the stabilizing frame (14), the retaining seat (35), and the second side frame (5). Nuts (33) are provided at both ends of the screw (34).
8. A modular support frame for assembling a double-tube arch bridge according to claim 7, characterized in that: The embedded part includes a number of reinforcing bolts (23), which are symmetrically installed in pairs inside the fixed seat (6), and the ends of the reinforcing bolts (23) extend into the arch foot (1).