A storage and moving support and process suitable for a main cable saddle component of a suspension bridge

Abstract

This invention discloses a storage and transfer support and process suitable for main cable saddle components of suspension bridges. The storage and transfer support includes a storage frame, a storage skeleton, and a storage drive structure. The storage frame includes columns, a main beam, and a storage slide. The main beam is mounted on the main tower platform and / or tower base of the suspension bridge via columns, and the storage slide is located on the main beam. The storage skeleton is used to support and position the various components of the main cable saddle and can slide on the storage slide. The storage drive structure is used to drive the storage skeleton to move on the storage slide. Only one side of the main beam is supported by columns in the area where the tower base exists. One side of the main beam is fixed to the main tower platform via columns, and the other side is directly erected on the tower base. This ensures that all components of the main cable saddle can be stored in place at once and can be lifted from the river side, unaffected by space limitations and unaffected by high water levels during the flood season.

Description

Technical Field

[0001] This invention relates to the field of suspension bridge technology, and in particular to a storage and transfer support and process suitable for the main cable saddle components of suspension bridges. Background Technology

[0002] In bridge construction, the main cable saddle, as the most critical force-transfer component between the main cable and the suspension bridge tower, plays a vital role in supporting the main cable, smoothly altering its alignment, and transferring the load from the main cable to the tower. It is a key control point in the entire bridge construction process. Figures 12 to 18 As shown, the main cable saddle mainly consists of a grid, upper and lower bearing plates, and a saddle body. It functions to support the main cable, smoothly change the cable's alignment, and transfer the cable load to the main tower. During the installation of the main cable saddle, the grid is installed first, followed by the upper and lower bearing plates, and finally the front and rear saddle bodies.

[0003] The maximum lifting weight of a single saddle component generally exceeds 80 tons, with a minimum length × width of 12m × 4m. Unloading requires lifting equipment with a lifting capacity of over 400 tons, and the storage site has high requirements for flatness and load-bearing capacity. Currently, most large cross-border suspension bridges use a single-span design to cross the river. Therefore, to achieve a reasonable economic cost, the piers of suspension bridges are located in floodplains, making the construction site at the piers highly susceptible to flooding during the high-water season. Figure 19 As shown, to facilitate tower construction, trestle bridges are typically constructed on the riverside. However, the load-bearing capacity of these trestle bridges is often insufficient for storing and transporting the main cable saddle. Storing the main cable saddle components on these trestle bridges presents significant technical challenges. Furthermore, if adverse factors cause deformation or rusting of the components during storage, it will greatly affect their installation at the top of the tower and subsequent jacking operations. On the other hand, lifting from the riverbank would conflict with the existing approach bridges in terms of space.

[0004] Meanwhile, the main cable saddle components are generally lifted vertically using a gantry crane at the top of the tower. This method requires high lifting precision, but the gantry crane itself is relatively weak. If the lifting precision is insufficient and the components need to be swayed, it will greatly jeopardize the structural safety of the gantry crane at the top of the tower. Therefore, before each lifting operation of the main cable saddle components, lifting equipment must be brought to the site, and the working space under the tower must be cleared to ensure that the main cable saddle components are accurately lifted to the lifting position, which greatly increases the construction investment.

[0005] The components of the main cable saddle are relatively heavy and bulky. For the hoisting of the main cable saddle components of long-span suspension bridges, the following methods are generally used:

[0006] (1) Direct hoisting: The main cable saddle components are directly hoisted upon arrival at the site, which is convenient and quick. However, it requires a high bearing capacity of the construction site and cannot guarantee the arrival time of the components. The hoisting process occupies the site for too long, and other work areas must be shut down. This may lead to a tight construction schedule, untimely hoisting, long waiting time for vehicles, or delays in vehicle arrival, thus delaying the construction period.

[0007] (2) Storage on a hardened ground under the tower: This method is suitable for mountainous areas or high-altitude locations, but requires a hardened and level site. Otherwise, it can easily lead to component deformation and coating damage. During hoisting, equipment, manpower, and time are needed to move the components to the hoisting position in stages, increasing costs. Furthermore, the gradation time after the grid concrete is poured is long, during which component hoisting cannot be carried out, resulting in excessive equipment investment. Because the components of the main cable saddle need to be hoisted in stages and the hoisting accuracy requirements are high, it is necessary to continuously use lifting equipment of not less than 400t to move the components of the main cable saddle to the designated hoisting position, resulting in excessive equipment costs.

[0008] (3) Setting up temporary storage supports: Temporary supports require a large area. Temporary supports cannot be set up in areas affected by trestle bridges or other temporary structures. In addition, temporary storage supports are generally placed directly on the original ground and are low in height. They are not suitable for setting up on the floodplain during the high water season, which may cause the main cable saddle components to be submerged and corroded. Summary of the Invention

[0009] To address the shortcomings of existing technologies, this invention provides a storage and transfer support and process suitable for main cable saddle components of suspension bridges, which can ensure that all components of the main cable saddle can be stored in place at once and lifted from the river side.

[0010] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows:

[0011] A storage and transfer support for the main cable saddle component of a suspension bridge includes a storage and transfer base, a storage and transfer frame, and a storage and transfer drive structure;

[0012] The storage and transfer frame includes columns, a main beam, and a storage and transport track. The main beam is mounted on the main tower platform and / or tower base of the suspension bridge via the columns, and the storage and transport track is mounted on the main beam.

[0013] The storage and transfer frame is used to support the various components of the positioning main cable saddle and can slide on the storage and transport track;

[0014] The storage and transfer drive structure is used to drive the storage and transfer skeleton to move on the storage and transfer slide.

[0015] The main beam has only one-sided columns in the area where the tower base exists. One side of the main beam is fixed to the main tower support platform by the columns, and the other side of the main beam is directly erected on the tower base.

[0016] The storage and transfer frame is an L-shaped steel frame structure.

[0017] The main beam includes a transverse main beam and a storage and transport main beam. The transverse main beam is fixed on the column and the tower base, the storage and transport main beam is fixed on the transverse main beam, and the storage and transport slide is provided on the storage and transport main beam.

[0018] The storage and transfer skeleton includes a rectangular frame structure and longitudinal main beams mounted on the frame structure, with the ends of the longitudinal main beams extending out from the frame structure.

[0019] The main tower of the suspension bridge is equipped with a tower top gantry, and the storage and transfer support is located directly below the tower top gantry.

[0020] The tower base is equipped with embedded parts, and the other side of the main beam is connected to the embedded parts.

[0021] The storage and transport slide includes a sliding track and a PTFE sliding plate mounted on the sliding track, which is located on the main storage and transport beam.

[0022] A construction process for storing and relocating the main cable saddle components of a suspension bridge using the aforementioned storage and relocation support includes the following steps:

[0023] Step 1: First, install the storage and transfer bracket;

[0024] Step 2: After the main cable saddle components arrive on site, they are hoisted one by one to the designated positions using a truck crane. When the main cable saddle hoisting operation is carried out during the high water season, the components are moved one by one to the hoisting position below the tower top gantry via the storage and transport frame and storage and transport drive structure in the order of grid, upper and lower bearing plates, side span side saddle body, and middle span side saddle body, so as to realize the storage and transport work of the main cable saddle components.

[0025] First, the columns of the storage and transfer support are installed. Only one-sided columns are set in the area where the tower base exists. Flat connectors are welded between the columns. Then, the sliding main beam is installed, and sliding tracks are laid on the sliding main beam.

[0026] Compared with the prior art, the present invention has the following advantages:

[0027] 1. The impact of the high water season on the main cable saddle components was avoided, and the components of the main cable saddle were prevented from being submerged and corroded, thus protecting the finished product;

[0028] 2. The use of the new type of storage and relocation support allows for lifting from the riverside, avoiding the trestle bridge on the riverside and the approach bridge on the bank, thus solving the problem of conflicting construction work space and making the storage and relocation construction safer and more controllable;

[0029] 3. By setting up a new type of storage and transfer support, all components of the main cable saddle can be stored in place at once, reducing the number of times each component needs to be moved and accelerating the construction period;

[0030] 4. Reduced equipment investment and saved costs;

[0031] 5. Using one side of the tower base as a support reduces material input, and once all components of the main cable saddle are hoisted into place, the storage and relocation support can be immediately dismantled without affecting the surrounding environment. Attached Figure Description

[0032] The following is a brief explanation of the contents of each of the accompanying drawings and the markings in the drawings:

[0033] Figure 1 This is a schematic diagram of the storage and transfer support structure of the present invention.

[0034] Figure 2 This is a plan view of the storage and transfer support of the present invention.

[0035] Figure 3 The cross-sectional arrangement of the storage and transfer support of the present invention Figure 1 .

[0036] Figure 4 The cross-sectional arrangement of the storage and transfer support of the present invention Figure 2 .

[0037] Figure 5 The cross-sectional arrangement of the storage and transfer support of the present invention Figure 3 .

[0038] Figure 6 This is a schematic diagram of the grid transfer skeleton model of the present invention.

[0039] Figure 7 The cross-sectional arrangement of the grid storage frame in this invention Figure 1 .

[0040] Figure 8 The cross-sectional arrangement of the grid storage frame in this invention Figure 2 .

[0041] Figure 9 This is a schematic diagram of the upper and lower bearing plates of the present invention.

[0042] Figure 10 The cross-sectional arrangement of the upper and lower bearing plate storage frame of this invention. Figure 1 .

[0043] Figure 11 The cross-sectional arrangement of the upper and lower bearing plate storage frame of this invention. Figure 2 .

[0044] Figure 12 Diagram of the main cable saddle structure.

[0045] Figure 13 and Figure 14 This is a schematic diagram of a grid structure.

[0046] Figure 15 and Figure 16 This is a schematic diagram of the upper and lower support plate structure.

[0047] Figure 17 This is a schematic diagram of the mid-span saddle structure.

[0048] Figure 18 This is a schematic diagram of the side span saddle structure.

[0049] Figure 19 This is a schematic diagram of the site layout for the tower area of ​​the large cross-border suspension bridge.

[0050] In the picture:

[0051] 1. Columns, 2. Horizontal main beams, 3. Storage and transport main beams, 4. Storage and transport slides. Detailed Implementation

[0052] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings and through the description of the examples.

[0053] like Figures 1 to 11 As shown, the storage and relocation support applicable to the main cable saddle components of a suspension bridge includes a storage and relocation frame, a storage and relocation skeleton, and a storage and relocation drive structure. The storage and relocation frame includes a column 1, a main beam, and a storage and relocation slide 4. The main beam is mounted on the main tower abutment and / or tower base of the suspension bridge via the column, and the storage and relocation slide is mounted on the main beam. The storage and relocation skeleton is used to support and position the various components of the main cable saddle and can slide on the storage and relocation slide. The storage and relocation drive structure is used to drive the storage and relocation skeleton to move on the storage and relocation slide. The storage and relocation frame, the storage and relocation skeleton, and the storage and relocation drive structure are organically combined to form a storage and relocation system.

[0054] The main beam has only one-sided columns in the area where the tower base exists. One side of the main beam is fixed to the main tower support platform by the columns, while the other side of the main beam is directly erected on the tower base, resulting in a compact, stable, and reliable structure. Furthermore, the tower base is equipped with embedded parts, and the other side of the main beam is connected to the embedded parts, ensuring a reliable connection. The storage and transfer frame is an L-shaped steel frame structure, with one end corresponding to the approach bridge and the other end corresponding to the support trestle bridge.

[0055] The main beam includes a transverse main beam 2 and a storage and transport main beam 3. The transverse main beam is fixed on the column and the tower base, and the storage and transport main beam is fixed on the transverse main beam. The storage and transport slide is set on the storage and transport main beam. The storage and transport slide includes a sliding track and a PTFE sliding plate set on the sliding track. The sliding track is set on the storage and transport main beam.

[0056] The storage frame includes a rectangular frame structure and longitudinal main beams mounted on the frame structure, with the ends of the longitudinal main beams extending out from the frame structure.

[0057] The main tower of the suspension bridge is equipped with a tower top gantry, and the storage and transfer support is located directly below the tower top gantry, ensuring stable and reliable hoisting.

[0058] This invention designs a novel storage and transfer support system. This system can store all components of the main cable saddle before the high-water season and, during the high-water season, allow the components to slide sequentially to the lifting position during hoisting. This system allows all components of the main cable saddle to be stored at once, avoiding repeated equipment transport, provided there are no adverse environmental factors. By placing the steel columns of the storage and transfer support on the main tower platform and simultaneously placing the main transport beam on one side of the support on the tower base, the system ensures the flatness of the track and the storage height of the components, reduces the use of steel columns, prevents component deformation due to uneven settlement, and raises the support height by relying on the tower base, thus avoiding the risk of components being submerged during high tides.

[0059] A preferred embodiment of the present invention is as follows:

[0060] The storage and transfer support frame includes uprights, transverse main beams, a storage and transport main beam, and storage and transport tracks. The uprights consist of an upright foundation and an upright beam; in the area where the tower base exists, only one upright is installed, with the tower base serving as the support on the other side. The transverse main beam rests on the uprights and the tower base, and during installation, it connects to the embedded parts on the tower base. The storage and transfer main beam is located on both sides of the storage and transfer support frame, directly above the uprights, and is placed on the transverse main beam for connection and fixation. The storage and transfer tracks are installed on the sliding main beam. This type of storage and transfer support frame has a simple structure, clearly defined force distribution, and can fully meet the storage and transfer requirements of all components of the main cable saddle.

[0061] There are two types of storage and relocation frames, one for use with the grating and the other for the upper and lower support plates. Each frame consists of a base, lower suspension rod, vertical rods, diagonal rods, upper suspension rod, transverse connecting beams, and longitudinal main beams. The entire frame is welded together to form a rectangular parallelepiped. This storage and relocation frame not only meets the storage needs of the grating and the irregularly shaped bottom surfaces of the upper and lower support plates but also accommodates their sliding movement.

[0062] The storage and transfer system is formed by the organic combination of the storage and transfer frame, the storage and transfer skeleton, and the storage and transfer drive structure. The base of the storage and transfer skeleton is placed on the storage and transfer track of the frame. The storage and transfer skeleton is connected to the storage and transfer support by a hand-operated hoist, which provides traction when the components of the main cable saddle slide. The PTFE sliding plate is placed between the front and rear saddle bodies of the main cable saddle and the storage and transfer support, serving as a slider for the sliding of the main cable saddle.

[0063] The present invention provides a construction process for storing and relocating main cable saddle components of a suspension bridge using a storage and relocation support, comprising the following steps:

[0064] Step 1: First, install the storage and transfer bracket;

[0065] Step 2: After the main cable saddle components arrive on site, they are hoisted one by one to the designated positions using a truck crane. When the main cable saddle hoisting operation is carried out during the high water season, the components are moved one by one to the hoisting position below the tower top gantry via the storage and transport frame and storage and transport drive structure in the order of grid, upper and lower bearing plates, side span side saddle body, and middle span side saddle body, so as to realize the storage and transport work of the main cable saddle components.

[0066] In step 1, the columns of the storage and transfer support are installed first. Only one side of the column is installed in the area where the tower base exists. A horizontal bracing is welded between the columns. Then, the sliding main beam is installed, and a sliding track is laid on the sliding main beam. Sliding frames are manufactured separately for the grating and the upper and lower support plates to meet their storage and transfer requirements on the storage and transfer support.

[0067] Currently, this set of storage and relocation support has been successfully implemented in the main cable saddle hoisting construction of the Nanjing Xianxin Road River Crossing Tunnel Project, which fully proves that the invention overcomes the limitations of conventional main cable saddle storage and relocation technology. By comprehensively using the above-mentioned new storage and relocation components, the main cable saddle components can be stored and relocated in one go during the high water season and under limited space conditions. This technology has wide applicability to the hoisting of main cable saddle components or large components under similar construction conditions in the future.

[0068] The above description is merely an illustration of preferred embodiments of the present invention, and the above technical features can be arbitrarily combined to form multiple embodiments of the present invention.

[0069] The present invention has been described above by way of example with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvements made using the concept and technical solution of the present invention, or the direct application of the concept and technical solution of the present invention to other occasions without modification, are all within the protection scope of the present invention.

Claims

1. A storage and transport support for a main cable saddle member of a suspension bridge, characterized in that: include: The storage and transfer frame includes columns, a main beam, and a storage and transfer slide. The main beam is mounted on the main tower platform and tower base of the suspension bridge via the columns, and the storage and transfer slide is mounted on the main beam. The storage and transfer frame is used to support the various components of the positioning main cable saddle and can slide on the storage and transfer track; The storage and transfer drive structure is used to drive the storage and transfer skeleton to move on the storage and transfer slide; The main beam has only one-sided columns in the area where the tower base exists. One side of the main beam is fixed to the main tower support platform by the columns, and the other side of the main beam is directly erected on the tower base. The main tower of the suspension bridge is equipped with a tower top gantry, and the storage and transfer support is located directly below the tower top gantry.

2. The storage and transfer support for the main cable saddle member of a suspension bridge according to claim 1, characterized in that: The storage and transfer frame is an L-shaped steel frame structure.

3. The storage and transfer support for the main cable saddle member of a suspension bridge according to claim 1, characterized in that: The main beam includes a transverse main beam and a storage and transport main beam. The transverse main beam is fixed on the column and the tower base, the storage and transport main beam is fixed on the transverse main beam, and the storage and transport slide is provided on the storage and transport main beam.

4. The portable scaffolding for use in the construction of a main cable saddle member of a suspension bridge according to claim 1, wherein: The storage and transfer skeleton includes a rectangular frame structure and longitudinal main beams mounted on the frame structure, with the ends of the longitudinal main beams extending out from the frame structure.

5. The storage and transfer support for the main cable saddle component of a suspension bridge as described in claim 1, characterized in that: The tower base is equipped with embedded parts, and the other side of the main beam is connected to the embedded parts.

6. The portable scaffolding for use in the construction of a main cable saddle member of a suspension bridge as claimed in claim 3, wherein: The storage and transport slide includes a sliding track and a PTFE sliding plate mounted on the sliding track, which is located on the main storage and transport beam.

7. A construction process for the installation of a main cable saddle member of a suspension bridge using the storage and transfer support according to any one of claims 1 to 6, characterized in that: The construction process includes the following steps: Step 1: First, install the storage and transfer bracket; Step 2: After the main cable saddle components arrive on site, they are hoisted one by one to the designated positions using a truck crane. When the main cable saddle hoisting operation is carried out during the high water season, the components are moved one by one to the hoisting position below the tower top gantry via the storage and transport frame and storage and transport drive structure in the order of grid, upper and lower bearing plates, side span side saddle body, and middle span side saddle body, so as to realize the storage and transport work of the main cable saddle components.

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