A sling system and method of use thereof

Abstract

The application discloses a bridge technical field, and particularly relates to a cable saddle system and a use method thereof. The cable saddle system comprises a main tower and a lower bearing plate, the longitudinal two sides of the main tower are provided with widened portions, the longitudinal two sides of the lower bearing plate are provided with enlarged areas, the widened portions are used for supporting the enlarged areas, the enlarged areas and the lower bearing plate are both provided with reserved bolt groups, and the reserved bolt groups are used for fixing the main cable saddle in the longitudinal direction. The widened portions are arranged on the main tower, the enlarged areas are arranged on the lower bearing plate, and the reserved bolt groups are arranged on the enlarged areas and the lower bearing plate, so that the problem that the main cable saddle needs to be fixed again after the main cable line shape changes due to the deformation of the earth crust creep is effectively solved, meanwhile, the widened portions of the main tower are used for supporting the enlarged areas of the lower bearing plate, the area of the lower bearing plate is increased by arranging the enlarged areas, the displacement range of the main cable saddle on the lower bearing plate under the action of the earthquake is effectively increased, the main cable saddle can adapt to the maximum linear adjustment requirement, and the bridge structure is effectively protected.

Description

Technical Field

[0001] This invention relates to the field of bridge technology, and in particular to a cable saddle system and its usage method. Background Technology

[0002] A suspension bridge, also known as a suspension bridge, is a bridge structure that uses tensile cables as its main load-bearing components. It primarily consists of main cables, stiffening girders, towers, saddles, abutments, suspenders, and cable clamps. Suspension bridges fully utilize the tensile strength of the cable components, featuring rational stress distribution, material savings, and a lightweight structure. Among various bridge types, suspension bridges have the strongest spanning capacity, making them widely used in projects spanning large rivers and wide canyons.

[0003] Among them, cable saddles are generally divided into main cable saddles and loose cable saddles. The main cable saddle is mainly used to transfer the huge pressure from the main cable to the main tower, while the loose cable saddle is mainly used to change the direction of force transmission of the main cable and to distribute the main cable into strands and anchor them to the anchor.

[0004] The main cable saddle of a suspension bridge is a crucial component supporting the main cable and is used to house it. It is typically located at the top of the main tower. Due to the requirement that bridge sites must avoid unfavorable locations such as faults, no suspension bridges spanning faults have been built in China. Suspension bridges built in high-seismic-area areas have not considered the need for post-earthquake alignment adjustments. Therefore, the lower bearing plate of the main cable saddle currently adopts a conventional structure. Generally, when installing the main cable saddle, the lower bearing plate is installed at the top of the main tower, and a group of mounting bolts is set on the lower bearing plate. The mounting bolt group is used to connect limiting blocks, which fix the main cable saddle to the top of the main tower to prevent it from sliding. For example, patent CN112376422A discloses a self-balancing system for the main cable force of a suspension bridge, in which the main cable saddle is fixed to the lower bearing plate by a first limiting block and a second limiting block.

[0005] However, in the construction of the transportation network in the southwestern mountainous area, in order to drive local economic development, the overall route planning has to place suspension bridges on earthquake fracture zones and cross active faults. Such bridges must withstand both the crustal creep deformation of active faults and the large ground deformation caused by sudden earthquakes. The bridge towers and anchorages are displaced, and the main cable alignment of the bridge changes as a result. The bridge has significant residual internal forces, which reduces the load-bearing capacity and service performance of the bridge structure and may further amplify the damage to the bridge structure, putting the bridge structure at risk of failure. Therefore, it is urgent to adjust the position of the main cable saddle to adjust the main cable alignment so that the internal forces of the bridge structure meet the requirements for continued operation. Summary of the Invention

[0006] The purpose of this invention is to address the following: When the alignment of a bridge changes significantly due to crustal creep or when earthquakes cause large-scale ground deformation that leads to significant changes in the alignment of the bridge's main cable, residual internal forces are generated in the bridge structure. This results in a reduction in the bridge's load-bearing capacity and performance, and may further amplify structural damage, posing a risk of collapse to the bridge structure. To enable adjustable main cable alignment and repair bridge structural damage, this invention provides a cable saddle system and its usage method.

[0007] To achieve the above-mentioned objectives, the present invention provides the following technical solution:

[0008] A cable saddle system includes a main tower and a lower support plate. The main tower has widening portions on both longitudinal sides, and the lower support plate has enlarged areas on both longitudinal sides. The widening portions are used to support the enlarged areas. Both the enlarged areas and the lower support plate are provided with reserved bolt groups for fixing the main cable saddle in the longitudinal direction.

[0009] The cable saddle system described in this invention features a widened section on the main tower and an enlarged area on the lower bearing plate. The lower bearing plate is then installed on the main tower, with the widened section of the main tower supporting the enlarged area of ​​the lower bearing plate. Pre-installed bolt groups are located in both the enlarged area and on the lower bearing plate. When crustal creep causes significant changes in the cable alignment, or when earthquakes result in large ground deformations that alter the main cable alignment, residual internal forces arise in the bridge structure, reducing its load-bearing capacity and performance, and potentially exacerbating structural damage, posing a risk of collapse, the pre-installed bolt groups in the enlarged area and on the lower bearing plate allow for the installation of new stops to adjust the longitudinal position of the main cable saddle. By performing secondary positioning, the main cable saddle can be fixed in a new position, thereby achieving longitudinal position adjustment of the main cable saddle and thus adjusting the main cable alignment of the bridge. This ensures that the internal forces of the bridge structure meet the requirements for continued operation. The cable saddle system described in this invention not only effectively solves the problem of secondary fixation of the main cable saddle in accordance with the strain displacement when the main cable alignment changes due to crustal creep deformation, but also, by setting an enlarged area on the lower bearing plate and supporting the enlarged area of ​​the lower bearing plate through the widened part of the main tower, the area of ​​the lower bearing plate is increased by setting an enlarged area, which effectively increases the longitudinal displacement range of the main cable saddle on the lower bearing plate under seismic action. This allows the main cable saddle to adapt to the maximum alignment adjustment requirements and effectively protects the bridge structure.

[0010] The cable saddle system described in this invention, without altering the original design structure of the main cable saddle and the main tower body, provides areas for pre-installed bolt groups by setting a widened section on the main tower and an enlarged area on the lower bearing plate. This facilitates secondary fixing of the main cable saddle, solving the problem of needing secondary fixing of the main cable saddle to adapt to changes in the main cable alignment due to crustal creep deformation. Furthermore, since the original design size of the main cable saddle and the main tower body is not changed, production costs are not significantly increased. This also avoids the situation where changes in the size of the main cable saddle and the main tower body would lead to corresponding changes in the cable and bridge structure, requiring redesign and development. This not only effectively solves the problem of needing secondary fixing of the main cable saddle to adapt to changes in the main cable alignment due to crustal creep deformation, but also effectively saves production costs and avoids the need for redesign and development.

[0011] Preferably, it further includes a first stop block, which can be connected to the lower bearing plate and the enlarged area by the reserved bolt group. The first stop block is used to fix the main cable saddle in the longitudinal direction, and the main cable saddle is fixed secondary by installing the first stop block on the reserved bolt group.

[0012] Preferably, the lower bearing plate includes a horizontal plate, with its longitudinal sides extending outward to form the enlarged area. The horizontal plate has a group of mounting bolts, and pre-installed bolt groups are provided on both longitudinal sides of the mounting bolt groups. By providing pre-installed bolt groups on both longitudinal sides of the mounting bolt groups, when the alignment of the bridge's main cable changes significantly due to crustal creep or large ground deformation caused by an earthquake, requiring adjustment of the main cable saddle position to adjust the main cable alignment, workers can quickly install the first stop using the pre-installed bolt groups on both sides of the mounting bolt groups. This allows for timely secondary fixing of the main cable saddle, enabling position adjustment of the main cable saddle and thus adjusting the main cable alignment of the bridge in a short time, thereby ensuring the bridge's operational safety.

[0013] Preferably, at least two sets of reserved bolt groups are provided on both sides of each set of mounting bolt groups. By providing at least two sets of reserved bolt groups on both sides of each set of mounting bolt groups, it is ensured that when the main cable saddle needs to be adjusted in position, there are enough reserved bolt groups on the lower bearing plate and the enlarged area to install the first stop block, thereby facilitating quick secondary fixing of the main cable saddle.

[0014] Preferably, the bolt holes of the reserved bolt group and the installation bolt group are the same in size and arrangement. When the longitudinal offset of the main cable saddle is small, the first stop can fix the main cable saddle by partially installing it on the installation bolt group and partially installing it on the reserved bolt group, making the secondary fixing process of the main cable saddle more convenient and simple.

[0015] Preferably, the lower bearing plate further includes a baffle plate, which is disposed on the horizontal plate in the longitudinal direction. The baffle plate is used to restrict the lateral movement of the main cable saddle. By setting the baffle plate on the lower bearing plate to restrict the lateral movement of the main cable saddle, the lateral movement of the main cable saddle can be effectively prevented from causing the main cable of the bridge to deviate.

[0016] Preferably, the lower bearing plate is further provided with a lower bearing plate tie rod seat, and the main cable saddle is provided with a saddle body tie rod seat. The lower bearing plate tie rod seat and the saddle body tie rod seat cooperate with each other through a tie rod. Through the cooperation of the lower bearing plate tie rod seat, the saddle body tie rod seat and the tie rod, the main cable saddle can be fixed on the lower bearing plate. When the main cable saddle is fixed for the second time, through the cooperation of the lower bearing plate tie rod seat, the saddle body tie rod seat and the tie rod, the main cable saddle can be temporarily fixed on the lower bearing plate, thereby facilitating the installation of the first stop block.

[0017] This application also discloses a method of using a cable saddle system, including using a cable saddle system described in this application, the method further comprising the following steps:

[0018] Step A: Install a reaction frame on the main tower, and then install a jacking mechanism, wherein the jacking mechanism is located between the main tower and the reaction frame;

[0019] Step B: Adjust the longitudinal position of the main cable saddle on the lower bearing plate using the jacking mechanism;

[0020] Step C: When the main cable saddle is in the predetermined position on the lower bearing plate, install the first stop block on the reserved bolt group, and the first stop block abuts against the main cable saddle.

[0021] The present invention describes a method for using a cable saddle system. When the alignment of a bridge changes significantly due to crustal creep or when a large-scale ground deformation occurs due to an earthquake, causing a significant change in the alignment of the bridge's main cable, a reaction frame is installed on the main tower. A jacking mechanism is then installed between the main cable saddle and the reaction frame. This jacking mechanism adjusts the longitudinal position of the main cable saddle on the lower bearing plate. Once the main cable saddle is in a predetermined position on the lower bearing plate, a first stop is installed on a pre-installed bolt group on the lower bearing plate, and the first stop abuts against the main cable saddle. This first stop re-fixes the main cable saddle, achieving secondary fixation. This allows the main cable saddle to be fixed in a new position, thereby adjusting its position and adjusting the alignment of the bridge's main cable to ensure that the internal forces of the bridge structure meet the requirements for continued operation.

[0022] Preferably, in step A, a grid plate is pre-embedded at the top of the main tower, and one side of the reaction frame is connected to the grid plate. By pre-embedding the grid plate at the top of the main tower and then connecting the reaction frame to the grid plate, the connection strength between the reaction frame and the main tower is improved, making the reaction frame more firmly fixed on the main tower.

[0023] Preferably, a bracket is pre-embedded in the widened section, and the bottom of the reaction frame is connected to the bracket. By pre-embedding the bracket in the widened section of the main tower and connecting the bottom of the reaction frame to the bracket, effective support is provided for the reaction frame, and the connection between the reaction frame and the main tower is also made firm.

[0024] Preferably, in step C, when the main cable saddle is in the predetermined position on the lower bearing plate, the main cable saddle is temporarily fixed by connecting the lower bearing plate tie rod seat on the lower bearing plate and the saddle body tie rod seat on the main cable saddle via a tie rod. Then, the first stop block is installed. Before the secondary fixing of the main cable saddle, the main cable saddle is temporarily fixed to the lower bearing plate by the cooperation of the tie rod, the lower bearing plate tie rod seat, and the saddle body tie rod seat. After the main cable saddle is in a stable state, the first stop block is installed on the pre-reserved bolt group, and a thin plate is inserted into the gap between the first stop block and the main cable saddle so that the first stop block can fix the main cable saddle. After the first stop block is installed, the tie rod is loosened.

[0025] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0026] 1. The cable saddle system of the present invention comprises a widened section on the main tower and an enlarged area on the lower bearing plate. The lower bearing plate is then installed on the main tower, with the widened section of the main tower supporting the enlarged area of ​​the lower bearing plate. Pre-installed bolt groups are provided in both the enlarged area and the lower bearing plate. When crustal creep causes significant changes in the cable alignment, or when earthquakes cause large ground deformations that significantly alter the cable alignment, resulting in residual internal forces in the bridge structure and reducing its load-bearing capacity and performance, potentially further exacerbating structural damage and posing a risk of collapse, the pre-installed bolt groups in the enlarged area and the lower bearing plate allow for the installation of new stops to adjust the longitudinal position of the main cable saddle. The main cable saddle is repositioned to a new location, thereby adjusting its longitudinal position and adjusting the main cable alignment to ensure the bridge's internal forces meet the requirements for continued operation. This cable saddle system effectively solves the problem of secondary fixation of the main cable saddle in response to changes in cable alignment due to crustal creep deformation. Furthermore, by setting an enlarged area on the lower deck and supporting this enlarged area with the widened portion of the main tower, the area of ​​the lower deck is increased, effectively expanding the displacement range of the main cable saddle under seismic loads. This allows the main cable saddle to adapt to maximum alignment adjustment requirements, effectively protecting the bridge structure.

[0027] 2. The cable saddle system described in this invention, without altering the original design structure of the main cable saddle and the main tower body, provides areas for pre-installed bolt groups by setting a widened section on the main tower and an enlarged area on the lower bearing plate. This facilitates secondary fixing of the main cable saddle, solving the problem of needing secondary fixing of the main cable saddle to adapt to changes in the main cable alignment due to crustal creep deformation. Simultaneously, since the original design structure and size of the main cable saddle and the main tower body are not changed, production costs are not significantly increased. It also avoids the situation where changes in the size of the main cable saddle and the main tower body would lead to corresponding changes in the cable and bridge structure, requiring redesign and development. This not only effectively solves the problem of needing secondary fixing of the main cable saddle to adapt to changes in the main cable alignment due to crustal creep deformation, but also effectively saves production costs and avoids the need for redesign and development.

[0028] 3. The method of using the cable saddle system described in this invention is as follows: When the alignment of the bridge's main cable changes significantly due to crustal creep or large ground deformation caused by an earthquake, a reaction frame is installed on the main tower, and a jacking mechanism is installed between the main cable saddle and the reaction frame. The jacking mechanism is used to adjust the longitudinal position of the main cable saddle on the lower bearing plate. When the main cable saddle is in a predetermined position on the lower bearing plate, a first stop is installed on the reserved bolt group on the lower bearing plate, and the first stop abuts against the main cable saddle. The first stop is used to re-fix the main cable saddle, achieving secondary fixing of the main cable saddle. When the main cable saddle is fixed in the new position, the longitudinal position of the main cable saddle is adjusted, thereby adjusting the alignment of the bridge's main cable and ensuring that the internal forces of the bridge structure meet the requirements for continued operation. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of a cable saddle system according to the present invention (the main cable saddle is not offset).

[0030] Figure 2 This is a schematic diagram of the main tower described in this invention.

[0031] Figure 3 yes Figure 1 EE sectional view.

[0032] Figure 4 yes Figure 3 A schematic diagram of the secondary fixing after the main cable saddle shifts.

[0033] Figure 5 This is a schematic diagram of the secondary fixing operation after the main cable saddle shifts.

[0034] Figure 6 This is a schematic diagram of the lower support plate and the enlarged area. Figure 1 .

[0035] Figure 7This is a schematic diagram of the lower support plate and the enlarged area. Figure 2 (Bolt group not shown).

[0036] Figure 8 yes Figure 6 Sectional view at CC.

[0037] Figure 9 yes Figure 6 Sectional view at DD.

[0038] Figure 10 yes Figure 1 Sectional view at point AA.

[0039] Figure 11 yes Figure 8 A magnified view of section B.

[0040] Figure 12 This is a schematic diagram of the mounting plate.

[0041] Figure 13 This is a schematic diagram of the first stop.

[0042] Figure 14 This is a schematic diagram of the reaction frame structure installed on the main tower.

[0043] Figure 15 yes Figure 14 Top view.

[0044] Figure 16 yes Figure 14 The left-side view.

[0045] Figure 17 This is a schematic diagram of the upper support plate.

[0046] Figure 18 yes Figure 17 The front view.

[0047] Figure 19 yes Figure 18 A magnified view of a portion at point F.

[0048] The markings in the diagram are: 1-Main cable saddle, 2-Main tower, 21-Wide section, 22-Groove, 23-Embedded steel bar, 3-Enlarged area, 4-Lower bearing plate, 41-Setting bolt group, 42-Reserved bolt group, 43-Baffle plate, 44-Horizontal plate, 5-Upper bearing plate, 51-Upper bearing plate pin, 6-Mounting plate, 61-Mounting plate reserved hole, 7-Grid plate, 8-Reaction frame, 81-Reaction seat, 10-Corner, 11-PTFE plate, 12-Lower bearing plate tie rod seat, 13-Saddle body tie rod seat, 14-Tie rod, 15-Pushing mechanism, 17-First stop block, 171-Block bottom plate, 172-Block vertical plate. Detailed Implementation

[0049] The present invention will be further described in detail below with reference to embodiments and specific implementation methods. However, this should not be construed as limiting the scope of the above-described subject matter of the present invention to the following embodiments; all technologies implemented based on the content of the present invention fall within the scope of the present invention.

[0050] Example 1

[0051] like Figures 1-6 As shown, the cable saddle system described in this embodiment includes a main cable saddle 1, a main tower 2, and a lower support plate 4. The main tower 2 has widening portions 21 on both longitudinal sides, and the lower support plate 4 has enlarged areas 3 on both longitudinal sides. The lower support plate 4 is installed on the top of the main tower 2. The widening portions 21 are used to support the enlarged areas 3. Both the enlarged areas 3 and the lower support plate 4 are provided with reserved bolt groups 42, which are used to fix the main cable saddle 1 in the longitudinal direction.

[0052] The cable saddle system described in this embodiment features a widening section 21 on the main tower 2 and an enlarged area 3 on the lower bearing plate 4. The lower bearing plate 4 is then installed on the main tower 2, with the widening section 21 of the main tower 2 supporting the enlarged area 3 of the lower bearing plate 4. Pre-installed bolt groups 42 are provided on both the enlarged area 3 and the lower bearing plate 4. When crustal creep causes significant changes in the cable alignment, or when earthquakes cause large ground deformations that significantly alter the main cable alignment, residual internal forces are generated in the bridge structure, reducing its load-bearing capacity and performance, and potentially further exacerbating structural damage and posing a risk of collapse, the pre-installed bolt groups 42 on the enlarged area 3 and the lower bearing plate 4 allow for the installation of new stops on the pre-installed bolt groups 42 to support the main cable saddle. The longitudinal position is repositioned to fix the main cable saddle 1 in a new position, thereby realizing the longitudinal position adjustment of the main cable saddle 1 and thus adjusting the main cable alignment of the bridge. This ensures that the internal forces of the bridge structure meet the requirements for continued operation. The cable saddle system described in this invention not only effectively solves the problem of secondary fixation of the main cable saddle 1 in accordance with the strain position when the main cable alignment changes after crustal creep deformation, but also increases the area of ​​the lower bearing plate 4 by setting an enlarged area 3 on the lower bearing plate 4 and supporting the enlarged area 3 of the lower bearing plate 4 by the widened part 21 of the main tower 2. This effectively increases the displacement range of the main cable saddle 1 on the lower bearing plate 4 under seismic action, enabling the main cable saddle 1 to adapt to the maximum alignment adjustment requirements and effectively protecting the bridge structure.

[0053] In this embodiment, since the main cable is arranged longitudinally (along the bridge direction) on the bridge, the alignment changes over a large range after crustal creep or the ground deforms greatly due to earthquakes. When the main tower shifts to the side span, the main cable is subjected to excessive force and elongates. When the main tower shifts to the middle span, the main cable is subjected to less force and deflects. In order to adjust the alignment structure of the main cable, it is necessary to adaptively adjust the longitudinal position of the main cable saddle 1 along the longitudinal direction and perform secondary fixation.

[0054] Furthermore, without altering the original design structure of the main cable saddle 1 and the main tower 2, a widening section 21 is provided on the main tower 2 and an enlarged area 3 is provided on the lower bearing plate 4 to provide space for the reserved bolt group 42. This facilitates secondary fixing of the main cable saddle 1, addressing the issue of secondary fixing of the main cable saddle 1 in accordance with the strain position when the main cable shape changes due to crustal creep deformation. Simultaneously, since the original design structure size of the main cable saddle 1 and the main tower 2 remains unchanged, production costs are not significantly increased. This also avoids the situation where changes in the main cable saddle 1 and the main tower 2 would lead to corresponding changes in the cable and bridge structure, necessitating redesign and development. This not only effectively solves the problem of secondary fixing of the main cable saddle 1 in accordance with the strain position when the main cable shape changes due to crustal creep deformation but also effectively saves production costs and avoids the need for redesign and development.

[0055] like Figure 4 As shown, it also includes a first stop block 17, which can be connected to the lower bearing plate 4 and the enlarged area 3 via a pre-reserved bolt group 42. The first stop block 17 is used to fix the main cable saddle 1 longitudinally. The main cable saddle 1 is further fixed by installing the first stop block 17 on the pre-reserved bolt group 42. Figure 13 As shown, the first stop 17 includes a stop base plate 171. The stop base plate 171 is provided with holes of the same size and arrangement as the bolt holes of the reserved bolt group 42. A stop stiffening plate is provided at the gap between the holes in the stop base plate 171. A stop vertical plate 172 is also connected to the stop base plate 171. The stop vertical plate 172 is used to abut against the main cable saddle 1. The stop base plate 171 and the stop vertical plate 172 are both made of steel plate and are connected by welding.

[0056] A preferred method, such as Figures 6-7As shown, the lower support plate 4 includes a horizontal plate 44, the longitudinal sides of the horizontal plate 44 extend outward to form the enlarged area 3, the horizontal plate 44 has a group of mounting bolts 41, and the group of mounting bolts 41 has a reserved group of bolts 42 on both longitudinal sides. By setting reserved bolt groups 42 on both sides of the longitudinal direction of the installation bolt group 41, when the alignment of the main cable changes significantly due to crustal creep or when earthquakes cause large ground deformation, requiring adjustment of the position of the main cable saddle 1 to adjust the main cable alignment, the workers can quickly install the first stop block 17 using the reserved bolt groups 42 on both sides of the installation bolt group 41. This allows for timely secondary fixation of the main cable saddle 1, enabling longitudinal adjustment of the main cable saddle 1 and thus adjusting the main cable alignment of the bridge in a short time, thereby ensuring the safety of the bridge. Furthermore, at least two reserved bolt groups 42 are set on both sides of the longitudinal direction of each installation bolt group 41. By setting at least two reserved bolt groups 42 on both sides of the longitudinal direction of each installation bolt group 41, it is ensured that after the main cable saddle 1 shifts, there are enough reserved bolt groups 42 on the lower bearing plate 4 and the enlarged area 3 to install the first stop block 17, thereby effectively fixing the main cable saddle 1.

[0057] In a preferred embodiment, the bolt holes of the reserved bolt group 42 and the mounting bolt group 41 are the same in size and arrangement. When the longitudinal position of the main cable saddle 1 is adjusted slightly, the first stop block 17 can fix the main cable saddle 1 by partially installing it on the mounting bolt group 41 and partially installing it on the reserved bolt group 42, making the secondary fixing process of the main cable saddle 1 more convenient and simple.

[0058] A preferred method, such as Figures 6-7 As shown, the lower bearing plate 4 also includes a baffle 43, which is disposed on the horizontal plate 44 in the longitudinal direction. The baffle 43 is used to restrict the lateral movement of the main cable saddle 1. By setting the baffle 43 on the lower bearing plate 4 to restrict the lateral movement of the main cable saddle 1, the lateral movement of the main cable saddle 1 is effectively prevented from causing the bridge cable to deviate.

[0059] A preferred method, such as Figure 1 , Figure 3 As shown, a lower bearing plate tie rod seat 12 is also provided on the lower bearing plate 4, and a saddle body tie rod seat 13 is provided on the main cable saddle 1. The lower bearing plate tie rod seat 12 and the saddle body tie rod seat 13 are connected by a tie rod 14. Through the cooperation of the lower bearing plate tie rod seat 12, the saddle body tie rod seat 13 and the tie rod 14, the main cable saddle 1 can be fixed on the lower bearing plate 4. When the main cable saddle 1 is fixed for the second time, through the cooperation of the lower bearing plate tie rod seat 12, the saddle body tie rod seat 13 and the tie rod 14, the main cable saddle 1 can be temporarily fixed on the lower bearing plate 4, thereby facilitating the installation of the first stop block 17. Figure 1As shown, the saddle tie rod seat 13 is fixed to the lower part of the main cable saddle 1. The saddle tie rod seat 13 is made of steel and is fixedly connected to the main cable saddle 1 by welding. Figures 8-9 As shown, the lower support plate tie rod seat 12 is installed on the baffle 43 and fixedly connected to the horizontal plate 44. The lower support plate tie rod seat 12 is made of steel. The lower support plate tie rod seat 12 is connected to the baffle 43 by welding, and the lower support plate tie rod seat 12 is connected to the horizontal plate 44 by welding.

[0060] A preferred method, such as Figure 10 As shown, the main cable saddle 1 is installed on the top of the main tower 2. A grid plate 7 is pre-embedded on the main tower 2. The lower support plate 4 is fixedly connected to the grid plate 7. The bottom of the main cable saddle 1 is connected to an upper support plate 5, which is placed above the lower support plate 4. An installation plate 6 is also provided between the upper support plate 5 and the lower support plate 4. The installation plate 6 is fixed on the lower support plate 4. After the main cable saddle 1 is offset, the upper support plate 5 at the bottom of the main cable saddle 1 is slid on the installation plate 6 by pushing the main cable saddle 1, so as to adjust the reinstallation position of the main cable saddle 1. This ensures that after the first stop 17 is installed on the reserved bolt group 42, the first stop 17 can play a fixing role for the main cable saddle 1.

[0061] A preferred method, such as Figures 17-18 As shown, several upper bearing plate pins 51 are provided on the surface of the upper bearing plate 5. The bottom of the main cable saddle 1 is provided with mounting holes that match the upper bearing plate pins 51. The upper bearing plate 5 is connected to the bottom of the main cable saddle 1 via the upper bearing plate pins 51. Further, as... Figure 19 As shown, a PTFE plate 11 is provided at the bottom of the upper support plate 5 to reduce the friction between the upper support plate 5 and the mounting plate 6.

[0062] A preferred method, such as Figure 12 As shown, the mounting plate 6 has several pre-drilled holes 61. By opening several pre-drilled holes 61, the contact area between the upper bearing plate 5 and the mounting plate 6 is reduced, thereby reducing the friction between the upper bearing plate 5 and the mounting plate 6. When the main cable saddle 1 is offset and then fixed for the second time, it is easier to push the main cable saddle 1, and thus easier to adjust the reinstallation position of the main cable saddle 1. This ensures that after the first stop 17 is installed on the pre-drilled bolt group 42, the first stop 17 can fix the main cable saddle 1.

[0063] A preferred method, such as Figure 14It also includes a reaction frame 8, which is installed on the widened portion 21 of the main tower 2 and is fixedly connected to the grid plate 7, thereby improving the connection strength between the reaction frame 8 and the main tower 2 and making the reaction frame 8 more firmly fixed on the main tower. Furthermore, the reaction frame 8 and the grid plate 7 can be integrated. When installing the grid plate 7, a groove 22 is pre-cut on the main tower 2, and then the grid plate 7 is installed in the groove 22. Pre-embedded reinforcing bars 23 are pre-set in the groove 22, and the grid plate 7 is tied or welded to the pre-embedded reinforcing bars 23. Then, concrete is poured to connect the grid plate 7 and the main tower 2 as a whole. Figures 15-16 Furthermore, according to construction needs, reaction frames 8 can be installed on both sides of the widened section 21 of the main tower 2 to better adjust the position of the main cable saddle 1.

[0064] A preferred method, such as Figures 14-16 As shown, a reaction seat 81 is provided on the reaction frame 8. When the main cable saddle 1 is re-fixed after offset, a jacking mechanism 15 is provided between the reaction seat 81 and the main cable saddle 1. The jacking mechanism 15 and the reaction seat 81 cooperate to adjust the reinstallation position of the main cable saddle 1. Figure 8 As shown, this ensures that after the first stop 17 is installed in the reserved bolt group 42, the first stop 17 can fix the main cable saddle 1.

[0065] A preferred method, such as Figure 14 , Figure 16 As shown, a bracket 10 is pre-embedded in the widened part 21 of the main tower 2, and the bottom of the reaction frame 8 is connected to the bracket 10, which provides effective support for the reaction frame 8.

[0066] The longitudinal direction mentioned in this invention refers to the direction along the bridge, that is, the direction from the side span of the bridge to the middle span of the bridge.

[0067] Example 2

[0068] like Figures 4-5 As shown in this embodiment, a method for using a cable saddle system, employing a cable saddle system as described in Embodiment 1, further includes the following steps:

[0069] Step A: Install the reaction frame 8 on the main tower 2, and then install the jacking mechanism 15, wherein the jacking mechanism 15 is located between the main tower 2 and the reaction frame 8;

[0070] Step B: Adjust the longitudinal position of the main cable saddle 1 on the lower bearing plate 4 by using the jacking mechanism 15;

[0071] Step C: When the main cable saddle 1 is in the predetermined position on the lower bearing plate 4, install the first stop 17 on the reserved bolt group 42, and the first stop 17 abuts against the main cable saddle 1.

[0072] The method of using a cable saddle system described in this embodiment is as follows: When the alignment of the bridge cable changes significantly due to crustal creep or when a large deformation of the ground caused by an earthquake causes a significant change in the alignment of the main cable, a reaction frame 8 is installed on the main tower 2, and a jacking mechanism 15 is installed between the main cable saddle 1 and the reaction frame 8. The jacking mechanism 15 is used to adjust the longitudinal position of the main cable saddle 1 on the lower bearing plate. When the main cable saddle 1 is in a predetermined position on the lower bearing plate 4, a first stop 17 is installed on the reserved bolt group 42 on the lower bearing plate 4, and the first stop 17 abuts against the main cable saddle 1. The first stop 17 is used to re-fix the main cable saddle 1, realizing the secondary fixation of the main cable saddle 1. When the main cable saddle 1 is fixed in a new position, the longitudinal position of the main cable saddle 1 is adjusted, thereby adjusting the alignment of the main cable of the bridge and ensuring that the internal forces of the bridge structure meet the requirements for continued operation.

[0073] The predetermined position mentioned in this embodiment refers to the position of the main cable saddle 1 when the longitudinal position of the main cable saddle 1 on the lower bearing plate 4 is adjusted by the jacking mechanism 15, and the distance between the side of the main cable saddle 1 and the reserved bolt group is less than 1cm. At this time, the position of the main cable saddle 1 is the predetermined position mentioned in this embodiment.

[0074] A preferred method, such as Figure 14 As shown, in step A, a grid plate 7 is pre-embedded on the top of the main tower 2, and one side of the reaction frame 8 is connected to the grid plate 7, which improves the connection strength between the reaction frame 8 and the main tower 2, making the reaction frame 8 more firmly fixed on the main tower 2.

[0075] A preferred method, such as Figure 14 , Figure 16 As shown, a bracket 10 is pre-embedded in the widened section 21, and the bottom of the reaction frame 8 is connected to the bracket 10. By pre-embedding the bracket 10 in the widened section 21 of the main tower 2 and connecting the bottom of the reaction frame 8 to the bracket 10, effective support is provided for the reaction frame 8, and the connection between the reaction frame 8 and the main tower 2 is also made firm.

[0076] In a preferred embodiment, in step C, when the main cable saddle 1 is in a predetermined position on the lower bearing plate 4, the lower bearing plate tie rod seat 12 located on the lower bearing plate 4 and the saddle body tie rod seat 13 located on the main cable saddle 1 are connected by tie rod 14 to temporarily fix the main cable saddle 1, and then the first stop block 17 is installed. Before the secondary fixing of the main cable saddle 1, the main cable saddle 1 is temporarily fixed to the lower bearing plate 4 by the cooperation of tie rod 14, lower bearing plate tie rod seat 12 and saddle body tie rod seat 13. The temporary fixing method is as follows: first, the main cable saddle 1 is pushed by the jacking mechanism 15 to adjust the longitudinal position of the main cable saddle 1. When the main cable saddle 1 is in the predetermined position, the two ends of tie rod 14 are connected to the lower bearing plate tie rod seat 12 and the saddle body tie rod seat 13 respectively. The connection method is to use nuts, and tighten the nuts to connect tie rod 14, lower bearing plate tie rod seat 12 and saddle body tie rod seat 13 together. Figure 8 This achieves temporary fixation of the main cable saddle 1, enabling it to be in a stable state. After the main cable saddle 1 is in a stable state, the first stop 17 is then installed on the pre-reserved bolt group 42, and the first stop 17 abuts against the main cable saddle 1, thereby fixing the main cable saddle 1. If there is a gap between the first stop 17 and the main cable saddle 1, a thin plate is inserted into the gap so that the first stop 17 can abut against and fix the main cable saddle 1. After the first stop 17 is installed, the tie rod is then loosened.

[0077] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A Sling System, characterized in that, The main tower (2) and the lower support plate (4) are provided with widened parts (21) on the longitudinal sides of the main tower (2) and enlarged areas (3) on the longitudinal sides of the lower support plate (4), the widened parts (21) are used to support the enlarged areas (3), the enlarged areas (3) and the lower support plate (4) are provided with reserved bolt groups (42) on the longitudinal sides, the reserved bolt groups (42) are used to fix the main cable saddle (1) in the longitudinal direction; The first stop block (17) is connected to the lower support plate (4) and the enlarged area (3) through the reserved bolt groups (42), and the first stop block (17) is used to fix the main cable saddle (1) in the longitudinal direction.

2. A sling system according to claim 1, wherein, The lower support plate (4) includes a horizontal plate (44), the horizontal plate (44) extends outward on the longitudinal sides to form the enlarged area (3), and the horizontal plate (44) is provided with a mounting bolt group (41), and the mounting bolt group (41) is provided with the reserved bolt groups (42) on the longitudinal sides.

3. A sling system according to claim 2, wherein, At least two groups of the reserved bolt groups (42) are arranged on the longitudinal sides of each group of the mounting bolt groups (41).

4. A sling system according to claim 3, wherein, The bolt hole size and arrangement of the reserved bolt groups (42) are the same as those of the mounting bolt groups (41).

5. A sling system according to claim 2, wherein, The lower support plate (4) further includes a baffle plate (43) arranged on the horizontal plate (44) in the longitudinal direction, and the baffle plate (43) is used to limit the transverse movement of the main cable saddle (1).

6. A method of use of a cable saddle system, characterized in that The method further comprises the following steps using the cable saddle system according to any one of claims 1-5: Step A: arranging a counterforce frame (8) on the main tower (2), and then arranging a pushing mechanism (15) between the main tower (2) and the counterforce frame (8); Step B: adjusting the longitudinal position of the main cable saddle (1) on the lower support plate (4) through the pushing mechanism (15); Step C: when the main cable saddle (1) is in a predetermined position on the lower support plate (4), arranging a first stop block (17) on the reserved bolt groups (42), and making the first stop block (17) abut against the main cable saddle (1).

7. A method of using a rope saddle system according to claim 6, wherein, In step A, a grid plate (7) is pre-buried on the top of the main tower (2), and one side of the counterforce frame (8) is connected to the grid plate (7).

8. A method of using a rope saddle system according to claim 7, wherein, A bracket (10) is pre-buried in the widened part (21), and the bottom of the counterforce frame (8) is connected to the bracket (10).

9. A method of using a rope saddle system according to claim 8, wherein, In step C, when the main cable saddle (1) is in a predetermined position on the lower support plate (4), the main cable saddle (1) is temporarily fixed by connecting a lower support plate pull rod seat (12) located on the lower support plate (4) and a saddle body pull rod seat (13) located on the main cable saddle (1) through a pull rod (14), and then the first stop block (17) is arranged.

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