An integrated installation system for an abutment pre-embedded section

Abstract

The application discloses an arch seat pre-buried section integral installation system and relates to the technical field of bridge construction. The system comprises a load-bearing support, a rotating shaft, a rotating platform and a rotating fixing frame. The load-bearing support is used for supporting the structural weight of the pre-buried section. The rotating shaft is arranged on the load-bearing support and is rotationally connected with the load-bearing support. One end of the rotating platform is fixedly connected with the rotating shaft, and the rotating platform is used for supporting the stiff framework arch foot pre-buried section. The rotating fixing frame is arranged on one side of the load-bearing support and is away from the rotating shaft. The rotating fixing frame is connected with the rotating platform through a hinge. The installation angle of the pre-buried section can be flexibly adjusted through cooperation of the rotating shaft and the rotating platform, the problems of angle deviation and position deviation in traditional construction are avoided, the installation precision of the pre-buried section is ensured to meet the design requirements, and a good foundation is laid for subsequent arch structure construction.

Description

Technical Field

[0001] This invention relates to the field of bridge construction technology, and in particular to an integrated installation system for pre-embedded sections of arch seats. Background Technology

[0002] A reinforced concrete arch bridge is a type of bridge that uses an arch structure to convert loads into axial stress, and the thrust is balanced by the arch foundation. It is a widely used form in modern bridge engineering, and is widely used for its strong spanning capacity, high load-bearing capacity, beautiful shape, good economy, and durability.

[0003] The installation of the arch ribs in reinforced concrete arch bridges requires extremely high precision. The elevation and axial misalignment of the arch ribs are key factors in controlling this precision. The installation accuracy of the arch ribs is the lifeline of reinforced concrete arch bridge construction. It is not simply a matter of "aesthetics," but directly relates to the distribution of internal forces, safety, stability, and long-term durability of the structure. For example, deviations in the initial pre-embedding of the arch rib may alter the designed internal force state, causing localized stress concentration, leading to accelerated cracking of the arch abutment concrete, and inducing steel corrosion—all long-term risks affecting the structure's durability and load-bearing capacity. Deviations in the pre-embedding of the arch abutment and arch ribs will increase the cumulative error in the arch rib installation, causing uncontrolled closure dimensions, difficulties in closure, disruption of the overall linear smoothness, and impacts on the construction of structures above the arch. Even minor deviations can have a magnified effect after the bridge is completed, leading to catastrophic consequences. Therefore, precision control must be a top priority in construction management during the arch rib installation process.

[0004] Traditionally, the construction of embedded sections for the arch ribs and abutments of reinforced concrete arch bridges employs a ground-mounted fixed support system. This means the support system is supported on the abutment or foundation by large steel pipes or structural members. This method requires pre-adjustment of the embedded section's support structure before installation, followed by either piece-by-piece assembly or overall tilted hoisting. Typically, the embedded sections of the arch ribs and abutments have a large tilt angle, making individual piece-by-piece assembly difficult and ensuring high precision. Hoisting the entire embedded section further complicates matters, as the heavy weight and tilted position make spatial adjustments challenging, requiring frequent fine-tuning and resulting in low construction efficiency. Summary of the Invention

[0005] The main objective of this invention is to provide an integrated installation system for the pre-embedded section of the arch seat to solve the above-mentioned problems.

[0006] To achieve the above objectives, the present invention provides an integrated installation system for an arch seat embedded section, comprising: A load-bearing bracket, which is used to support the weight of the embedded section structure; A rotating shaft is mounted on the load-bearing bracket and is rotatably connected to the load-bearing bracket; A rotating platform, one end of which is fixedly connected to the rotating shaft, is used to support the pre-embedded section of the rigid frame arch foot; A rotating fixing frame is disposed on one side of the load-bearing bracket and away from the rotation axis, and the rotating fixing frame is connected to the rotating platform by a hinge.

[0007] Furthermore, the load-bearing support includes a first support group, a second support group, and a third support group arranged sequentially from low to high; the first support group includes a plurality of first support rods, the second support group includes a plurality of second support rods, and the third support group includes a plurality of third support rods; the rotating shaft is rotatably connected to the plurality of third support rods; the first support group and the second support group are used to support the rotating platform after rotation.

[0008] Furthermore, the first support group further includes a first crossbar, which is connected to a plurality of first support rods; the second support group further includes a second crossbar, which is connected to a plurality of second support rods; and the third support group further includes a third crossbar, which is connected to a plurality of third support rods.

[0009] Furthermore, the first support group, the second support group, and the third support group are connected by a plurality of fourth crossbars.

[0010] Furthermore, the first support group, the second support group, the third support group, and the rotating fixing frame are connected by a first diagonal bar.

[0011] Furthermore, the third support group also includes a plurality of second diagonal bars, which are used to connect the plurality of the third support bars.

[0012] Furthermore, an inclined support is provided on the side of the third support rod away from the rotating platform.

[0013] Furthermore, the rotating platform is also equipped with a positioning bracket, which is used to improve the stability of the pre-embedded section of the rigid frame arch foot during installation.

[0014] The present invention has the following beneficial effects: 1. High installation accuracy: Through the cooperation of the rotating shaft and the rotating platform, the installation angle of the embedded section can be flexibly adjusted, avoiding problems such as angle deviation and position offset during traditional construction, ensuring that the installation accuracy of the embedded section meets the design requirements, and laying a good foundation for the subsequent arch structure construction.

[0015] 2. High construction efficiency: The method of overall hoisting, adjustment and fixing of the pre-embedded section shortens the construction cycle and the angle adjustment is convenient, which can effectively improve construction efficiency. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall installation system of the pre-embedded section of the arch seat according to the present invention.

[0017] Figure 2 This is a schematic diagram of the overall installation system of the pre-embedded section of the arch seat according to the present invention before adjustment.

[0018] Figure 3 This is a schematic diagram of the overall installation system of the pre-embedded section of the arch seat according to the present invention after adjustment.

[0019] Figure 4 This is a front side view of the overall installation system for the pre-embedded section of the arch seat according to the present invention.

[0020] Figure 5 This is a side view after adjustment of the overall installation system for the pre-embedded section of the arch seat according to the present invention.

[0021] Among them, 1-load-bearing bracket; 2-first support group; 3-second support group; 4-third support group; 5-first support rod; 6-second support rod; 7-third support rod; 8-rotation shaft; 9-rotation platform; 10-positioning bracket; 11-rotation fixing frame; 12-first crossbar; 13-second crossbar; 14-third crossbar; 15-fourth crossbar; 16-first diagonal bar; 17-second diagonal bar; 18-hinge; 19-diagonal support; 20-reinforced frame arch foot embedded section. Detailed Implementation

[0022] To achieve the above objectives and effects, the technical means and structure adopted by the present invention will be described in detail with reference to the accompanying drawings, focusing on the features and functions of the preferred embodiments of the present invention.

[0023] like Figures 1-5 As shown, this invention provides an integrated installation system for an arch seat embedded section, comprising: The load-bearing bracket 1 is used to support the weight of the embedded section structure. The load-bearing bracket 1 includes a first support group 2, a second support group 3 and a third support group 4 arranged from low to high. The first support group 2 includes multiple first support rods 5, the second support group 3 includes multiple second support rods 6, and the third support group 4 includes multiple third support rods 7. An inclined support 19 is provided on the side of the third support rod 7 away from the second support rod 6.

[0024] The rotating shaft 8 is mounted on the third support group 4 and is rotatably connected to the third support group 4. Specifically, the rotating shaft 8 is rotatably connected to the top of multiple third support rods 7 through a deep groove ball bearing. The outer ring of the bearing is welded and fixed to the third support rod 7, and the inner ring is interference-fitted with the rotating shaft 8 to ensure that the rotating shaft 8 rotates smoothly without radial wobble and can bear the weight of the rotating platform 9 and the embedded section.

[0025] The rotating platform 9 is fixedly connected to the rotating shaft 8 by welding at one end. The rotating platform 9 is used to support the pre-embedded section 20 of the rigid frame arch foot. Specifically, the upper surface of the rotating platform 9 is covered with an anti-slip pad to prevent the pre-embedded section 20 of the rigid frame arch foot from sliding after it is placed.

[0026] A positioning bracket 10 is welded onto the rotating platform 9. The positioning bracket 10 is used to assist the rotating platform 9 in fixing the pre-embedded section 20 of the rigid frame arch foot, thereby improving the stability of the pre-embedded section 20 of the rigid frame arch foot during installation.

[0027] A rotating fixing frame 11 is located on one side of the load-bearing bracket 1 and away from the rotating shaft 8. The top of the rotating fixing frame 11 is connected to the rotating platform 9 via a hinge 18. The rotating fixing frame 11 is equipped with locking bolts. When the rotating platform 9 is adjusted to a preset angle, tightening the locking bolts will lock the rotating platform 9 to the rotating fixing frame 11, thus restricting the rotation of the rotating platform 9.

[0028] In this embodiment, the first support group 2 further includes a first crossbar 12, which is connected to a plurality of first support rods 5 to connect the first support group 2 into a whole; correspondingly, the second support group 3 further includes a second crossbar 13, which is connected to a plurality of second support rods 6; the third support group 4 further includes a third crossbar 14, which is connected to a plurality of third support rods 7.

[0029] In this embodiment, the first support group 2, the second support group 3, and the third support group 4 are connected by multiple fourth crossbars 15. Specifically, the first support rod 5, the second support rod 6, and the third support rod 7 in the same column are connected by a fourth crossbar 15, thereby connecting the first support group 2, the second support group 3, and the third support group 4 into a whole through multiple fourth crossbars 15.

[0030] In this embodiment, the first support group 2, the second support group 3, the third support group 4 and the rotating fixing frame 11 are connected by a plurality of first diagonal rods 16. The adjacent first diagonal rods 16 have opposite inclination directions, forming a triangular structure, which further improves the overall stability of the device.

[0031] In this embodiment, the third support group 4 also includes a plurality of second inclined rods 17, which are used to connect the plurality of third support rods 7, thereby improving the stability of the third support group 4 and ensuring the support capacity during fine-tuning.

[0032] The usage process of this system is as follows: S1. Overall installation: Install the load-bearing bracket, rotating shaft, rotating platform, and rotating fixing frame into place; During the overall installation system erection, after layout, load-bearing supports are installed at the arch abutment positions. A rotating bearing and rotating shaft are installed on the higher side (mid-span side) of the embedded parts. On the other side, a rotating fixing frame with a top 50cm higher than the rotating shaft is erected. The rotating platform is then installed horizontally according to the design elevation. One side of the horizontal rotating platform is fixed by the rotating shaft, and the other side is kept level by a rotating fixing frame connected to a hinge.

[0033] After the load-bearing bracket is installed, it is pre-stressed to eliminate elastic deformation. Once the pre-stressing is completed and fine-tuning and retesting are passed, the overall installation system is complete.

[0034] S2. Overall hoisting: The pre-embedded section of the rigid frame arch foot is hoisted horizontally onto the rotating platform using hoisting equipment and aligned with the rotating platform to ensure installation accuracy. Once the pre-embedded section is securely installed and passes the retest, the overall hoisting is completed.

[0035] S3. Angle Fine-tuning: Use hinges to gradually fine-tune the angle of the rotating platform around the rotation axis until it reaches the design angle. After the fine-tuning is completed and the retest is qualified, weld and fix the rotating platform to the first and second support groups. Remove the front rotating fixing frame and positioning bracket, retain the load-bearing bracket, and complete the fine-tuning of the arch rib of the arch seat pre-embedded section.

[0036] The above description is only a preferred embodiment of the present invention and not all embodiments. Anyone should know that structural changes made under the guidance of the present invention, and any technical solutions that are the same as or similar to the present invention, are within the protection scope of the present invention.

Claims

1. An integrated installation system for an arch seat pre-embedded section, characterized in that, include: A load-bearing bracket, which is used to support the weight of the embedded section structure; A rotating shaft is mounted on the load-bearing bracket and is rotatably connected to the load-bearing bracket; A rotating platform, one end of which is fixedly connected to the rotating shaft, is used to support the pre-embedded section of the rigid frame arch foot; A rotating fixing frame is disposed on one side of the load-bearing bracket and away from the rotation axis, and the rotating fixing frame is connected to the rotating platform by a hinge.

2. The arch seat pre-embedded section integral installation system as described in claim 1, characterized in that, The load-bearing support includes a first support group, a second support group, and a third support group arranged in ascending order of height; the first support group includes multiple first support rods, the second support group includes multiple second support rods, and the third support group includes multiple third support rods; the rotating shaft is rotatably connected to the multiple third support rods; the first support group and the second support group are used to support the rotating platform after rotation.

3. The arch seat pre-embedded section integral installation system as described in claim 2, characterized in that, The first support group further includes a first crossbar, which is connected to a plurality of first support rods; the second support group further includes a second crossbar, which is connected to a plurality of second support rods; the third support group further includes a third crossbar, which is connected to a plurality of third support rods.

4. The arch seat pre-embedded section integral installation system as described in claim 2, characterized in that, The first support group, the second support group, and the third support group are connected by a plurality of fourth crossbars.

5. The arch seat pre-embedded section integral installation system as described in claim 2, characterized in that, The first support group, the second support group, the third support group, and the rotating fixed frame are connected by a first diagonal bar.

6. The arch seat pre-embedded section integral installation system as described in claim 2, characterized in that, The third support group also includes a plurality of second diagonal bars, which are used to connect the plurality of the third support bars.

7. The arch seat pre-embedded section integral installation system as described in claim 2, characterized in that, The third support rod is provided with an inclined support on the side away from the rotating platform.

8. The arch seat pre-embedded section integral installation system as described in claim 1, characterized in that, The rotating platform is also equipped with a positioning bracket, which is used to improve the stability of the pre-embedded section of the rigid frame arch foot during installation.

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