Continuous counter-pulled viaduct structure and method for constructing the same

Abstract

The application relates to a continuous counter-pulling supporting elevated bridge structure and a construction method thereof, and belongs to the technical field of elevated bridges. The continuous counter-pulling supporting elevated bridge structure comprises a plurality of bridge piers and a bridge body arranged on all the bridge piers. The continuous counter-pulling supporting elevated bridge structure further comprises a plurality of groups of reinforcing retaining walls arranged around the outer periphery of each bridge pier and a supporting device arranged on the reinforcing retaining walls and used for limiting the position of the bridge pier. The supporting device comprises a terminal frame arranged on the reinforcing retaining wall and used for reinforcing the reinforcing retaining wall, a supporting mechanism arranged on the terminal frame, and a counter-pulling mechanism used for connecting all the adjacent supporting mechanisms. Two groups of supporting mechanisms on each bridge pier are connected through a group of counter-pulling mechanisms. The construction method comprises the following construction steps: reinforcing, supporting and locking. The application has the effects of guaranteeing the position stability of the bridge pier in a water resource-rich area and improving the application stability of the elevated bridge structure.

Description

Technical Field

[0001] This application relates to the field of viaduct technology, and in particular to a continuously tension-supported viaduct structure and its construction method. Background Technology

[0002] Elevated bridges generally refer to bridge structures that cross deep ravines and canyons in place of high embankments. In urban transportation, elevated bridges often serve as a secondary road built above the ground, helping to improve traffic efficiency within the city.

[0003] Most existing elevated bridge structures consist of piers, a bridge deck, and tension cables. The bridge deck is supported by the piers on the foundation, and the deck is used for traffic. The tension cables typically consist of support frames mounted on the bridge deck and tension cables connecting the support frames and the bridge deck. The tension forces exerted by the tension cables between the support frames and the bridge deck help ensure the structural stability of the elevated bridge.

[0004] However, bridge piers are often located in water-rich areas such as rivers and swamps. These water-rich areas have loose geology and the land is prone to tectonic shifts. Over time, the stability of the bridge piers in water-rich areas is easily reduced due to geological shifts, which in turn affects the structural and operational stability of the viaduct. Summary of the Invention

[0005] To address the issue of bridge piers being unable to maintain positional stability in water-rich areas, which could negatively impact the structural and operational stability of viaducts, this application provides a continuously tension-supported viaduct structure and its construction method.

[0006] Firstly, the continuous tension-supported viaduct structure provided in this application adopts the following technical solution: A continuously tension-supported viaduct structure includes multiple piers and a bridge frame body disposed on all the piers. The continuously tension-supported viaduct structure also includes multiple sets of reinforcing retaining walls disposed around the outer perimeter of each pier and abutment devices disposed on the reinforcing retaining walls to define the position of the piers. The abutment devices include end frames disposed on the reinforcing retaining walls to reinforce the reinforcing retaining walls, abutment mechanisms disposed on the end frames, and tension mechanisms for connecting all adjacent abutment mechanisms. The two sets of abutment mechanisms on each pier are connected by a set of tension mechanisms.

[0007] By adopting the above technical solutions, the reinforced retaining wall surrounding the bridge pier compacts the foundation around the pier with its own weight, which helps to reduce the loosening of the geological conditions around the pier and ensures the positional and operational stability of the pier on the foundation. The reinforced retaining wall also reduces the direct impact of water resources on the pier, thus helping to ensure the stability of the pier in long-term use in water-rich areas. The end frame is connected to the reinforced retaining wall and is pressed against the pier through the bracing mechanism, which helps to ensure the positional stability of the pier on the foundation. The bracing mechanisms located at both ends of the pier are connected by the tension mechanism and pull against each other, thus forming a continuous tension and support between the pier, the limiting arc plate, the end frame, and the reinforced retaining wall, improving the positional and operational stability of the viaduct structure.

[0008] In one specific implementation scheme, gaps are left between adjacent reinforced retaining walls; each reinforced retaining wall includes multiple impact piles and multiple impact plates set on the foundation; each impact plate has a pre-connected channel with a size adapted to the impact pile, all impact plates are fitted onto the impact pile through the pre-connected channel, and the multiple impact plates fitted onto the impact pile abut against each other along the axial direction of the impact pile.

[0009] By adopting the above technical solution, the gaps between adjacent reinforced retaining walls facilitate the flow of water resources between them, thereby helping to reduce the pressure difference between the inside and outside of the reinforced retaining walls caused by water flow and ensuring the stability of the reinforced retaining walls in long-term applications in water-rich areas. The impact plate is fitted onto the impact pile through a reserved channel to achieve rapid installation and structural stability of the reinforced retaining wall.

[0010] In one specific implementation, the termination frame includes a base support assembly disposed on the foundation and an termination plate disposed on the base support assembly; the base support assembly includes a plug-in cylinder disposed on the foundation, one end of the termination plate is connected to the plug-in cylinder, and the other end is disposed on a nearby reinforced retaining wall; the inner cavity of the plug-in cylinder is also provided with a pressing block formed by the solidification of concrete slurry.

[0011] By adopting the above technical solution, after the plug-in tube is driven into the foundation, the end plate overlaps with the reinforced retaining wall through the plug-in tube, thereby achieving stable installation of the end plate; after the pressure block enters the inner cavity of the plug-in tube, it can limit the position of the plug-in tube on the foundation by its own weight, and ensure the positional stability and application stability of the end plate on the plug-in tube and the reinforced retaining wall.

[0012] In one specific implementation scheme, the supporting mechanism includes a limiting arc plate, which is disposed at the end of the end plate away from the insertion cylinder, and the side wall of the limiting arc plate away from the end plate abuts against the outer peripheral wall of the pier; the tie mechanism includes a positioning block, a fixed abutment block, a middle extension plate, and a fixing block, wherein the positioning block is disposed on the end wall of one of the limiting arc plates away from the end plate, the middle extension plate is disposed on the end wall of another limiting arc plate away from the end plate via the fixed abutment block, the fixing block is disposed at the end of the middle extension plate away from the fixed abutment block, and the positioning block is provided with a pre-sinking groove for the fixing block to be inserted.

[0013] By adopting the above technical solution, after the insertion block is inserted into the cavity of the pre-sinking trough, the middle extension plate overlaps the top wall of the positioning block, and the side walls of the fixed block and the positioning block abut against each other. At this time, the ends of the two limiting arc plates located at both ends of the pier are connected and can pull against each other, which effectively reduces the phenomenon of overall loosening and deviation of the pier due to local force deviation, and improves the positional stability of the pier on the water-rich foundation, as well as the overall positional stability and application stability of the viaduct structure.

[0014] In one specific implementation scheme, the reinforced retaining wall is further provided with a fixing component for defining the end plate or the limiting arc plate. The fixing component includes a pre-abutting screw and a fixing nut. The pre-abutting screw is disposed on a bearing plate that can abut against the end plate or the limiting arc plate, and the pre-abutting screw passes through the end plate or the limiting arc plate. The fixing nut is threadedly connected to the pre-abutting screw to position the end plate or the limiting arc plate on the bearing plate.

[0015] By adopting the above technical solution, after the pre-stop screw passes through the end plate or the limiting arc plate, it limits the position of the end plate and the limiting arc plate on the reinforced retaining wall; the fixing nut is tightened on the thread of the pre-stop screw, so that the end plate or the limiting arc plate is positioned on the reinforced retaining wall, effectively ensuring the connection strength and application stability of the end plate and the limiting arc plate on the reinforced retaining wall.

[0016] In one specific implementation, the retaining assembly further includes a fastening unit comprising multiple sets of springs and two connecting plates disposed at both ends of all the springs; one of the connecting plates is fixed to the side wall of the end plate and the limiting arc plate facing the impact plate.

[0017] By adopting the above technical solution, during the installation of the end plate and the limiting arc plate, the end plate and the limiting arc plate can compress the spring component by pressing against the connecting plate, which helps to reduce the connection gap between the end plate, the limiting arc plate and the reinforced retaining wall, and ensures the installation stability of the end plate and the limiting arc plate on the reinforced retaining wall. In addition, when the pier is subjected to force and deflection occurs, the spring component can reduce the transmission of vibration force on the viaduct structure through compression deformation, which helps to improve the application stability of the viaduct structure.

[0018] In one specific implementation scheme, the continuously tensioned viaduct structure further includes an external connection mechanism for connecting the bridge frame body and the end plate. The external connection mechanism includes a deformable external cable, a locking hook at one end of the external cable, and a positioning arc plate on the end plate. The end of the external cable away from the locking hook is located on the bridge frame body, and the external cable is connected to the positioning arc plate through the locking hook to be tensioned between the bridge frame body and the end plate.

[0019] By adopting the above technical solution, the external connecting cable is connected to the locking hook and the positioning arc plate, so that the external connecting cable can be tensioned between the bridge frame and the end plate, thereby forming a tensile force between the bridge frame and the end plate, and between the bridge frame, ensuring the application stability of the viaduct structure.

[0020] Secondly, this application also provides a construction method for a continuously tension-supported viaduct structure, the construction method comprising the following construction steps: Reinforcement: A reinforced retaining wall shall be installed around the outer perimeter of each pier for future use; Support: Install the end frame and support mechanism on the reinforced retaining wall, and provide two support mechanisms on the outer perimeter of each pier for support, as a backup; Locking mechanism: Connects the two bracing mechanisms on each pier via a pull-pull mechanism.

[0021] By adopting the above technical solutions, operators can quickly and efficiently complete the construction of the viaduct structure. The constructed viaduct structure has the advantages of high structural stability and can maintain positional and application stability even after long-term use.

[0022] In summary, this application has the following beneficial technical effects: 1. The reinforced retaining wall surrounding the bridge pier compacts the foundation around the pier with its own weight, helping to reduce the loosening of the surrounding geology and ensuring the positional and operational stability of the pier. The reinforced retaining wall also reduces the direct impact of water on the pier, thus helping to ensure the stability of the pier in long-term use in water-rich areas. The end frame is connected to the reinforced retaining wall and is pressed against the pier through the bracing mechanism, which helps to ensure the positional stability of the pier on the foundation. The bracing mechanisms located at both ends of the pier are connected by the tension mechanism and pull against each other, thus forming a continuous tension and support between the pier, the limiting arc plate, the end frame, and the reinforced retaining wall, improving the positional and operational stability of the viaduct structure. 2. After the insertion block is inserted into the cavity of the pre-sinking trough, the middle extension plate overlaps the top wall of the positioning block, and the side walls of the fixed block and the positioning block abut against each other. At this time, the ends of the two limiting arc plates located at both ends of the pier are connected and can pull against each other, which effectively reduces the phenomenon of overall loosening and deviation of the pier due to local force deviation, and improves the positional stability of the pier on the water-rich foundation, as well as the overall positional stability and application stability of the viaduct structure. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of a viaduct structure with continuous tension support according to an embodiment of this application; Figure 2 This is a schematic diagram showing the positional relationship between the reinforced retaining wall and the bridge pier in an embodiment of this application; Figure 3 This is a schematic diagram used to illustrate the reinforced retaining wall in the embodiments of this application; Figure 4 This is a schematic diagram of the connection relationship between the termination plate and the reinforced retaining wall in an embodiment of this application; Figure 5 This is a schematic diagram used to illustrate the pull mechanism in the embodiments of this application; Figure 6 yes Figure 4 An enlarged schematic diagram of part A in the middle.

[0024] Explanation of reference numerals in the attached figures: 1. Bridge pier; 11. Bridge frame; 2. Reinforced retaining wall; 21. Impact pile; 22. Impact plate; 221. Pre-connected passage; 3. Abutment device; 4. End frame; 41. End plate; 42. Bottom support assembly; 421. Inserted tube; 422. Pressing block; 5. Support mechanism; 51. Limiting arc plate; 6. Pull-out mechanism; 61. Positioning block; 611. Pre-sinking groove; 62. Fixed abutment block; 63. Middle extension plate; 64. Inserted block; 7. Fixing assembly; 71. Pre-abutment screw; 72. Fixing nut; 73. Tightening unit; 731. Spring component; 732. Connecting plate; 8. External connection mechanism; 81. External connection cable; 82. Locking hook; 83. Positioning arc plate. Detailed Implementation

[0025] This application discloses a viaduct structure with continuous tension support.

[0026] The following is in conjunction with the appendix Figure 1-6 This application will be described in further detail.

[0027] Reference Figure 1A continuous tension-supported viaduct structure includes multiple piers 1 and a bridge frame 11 mounted on all the piers 1. In this embodiment, the piers 1 are vertically positioned on a foundation rich in water resources, and the tops of all the piers 1 jointly support the bridge frame 11, the surface of which is used for traffic passage.

[0028] Reference Figure 1 The continuously tensioned viaduct structure also includes multiple sets of reinforcing retaining walls 2 and abutment devices 3. In this embodiment, the reinforcing retaining walls 2 are arranged around the outer perimeter of each pier 1, and each pier 1 can have four sets of reinforcing retaining walls 2 around its outer perimeter, with the four sets of reinforcing retaining walls 2 forming a rectangle surrounding the pier 1. It should be noted that the tops of the four sets of reinforcing retaining walls 2 are on the same horizontal plane, and gaps are left between adjacent reinforcing retaining walls 2 to allow for free flow of water resources. This reduces the problem of water pressure difference between the inside and outside of the reinforcing retaining walls 2 caused by water flow, thereby helping to ensure the positional stability and application stability of the reinforcing retaining walls 2 on the water-rich foundation.

[0029] Reference Figure 2 and Figure 3 Each reinforced retaining wall 2 includes multiple impact piles 21 and multiple impact plates 22. The impact piles 21 can be solid steel columns. The impact piles 21 are vertically inserted into the foundation, and all the impact piles 21 in each reinforced retaining wall 2 are symmetrical to each other and form a row. The impact plates 22 can be solid steel plates, and each impact plate 22 has a pre-connecting channel 221 with an inner diameter that matches the outer diameter of the impact pile 21, which is vertically connected. One impact plate 22 can be simultaneously fitted onto all the impact piles 21 in a set of reinforced retaining walls 2 through the pre-connecting channel 221.

[0030] Reference Figure 2 and Figure 3 In this embodiment, each reinforced retaining wall 2 can include three impact plates 22. The three impact plates 22 are all fitted onto all the impact piles 21 of each reinforced retaining wall 2, and the adjacent impact plates 22 are pressed together in the vertical direction to form a wall structure on the foundation.

[0031] Reference Figure 2 and Figure 3 The reinforcing retaining wall 2 surrounding the pier 1 can compact the geology around the pier 1 with its own weight, which helps to reduce the displacement of the pier 1 caused by loose geology. In addition, the reinforcing retaining wall 2 surrounding the pier 1 can also effectively reduce the impact of free flow of water on the pier 1, thus helping to ensure the stability of the pier 1 for long-term use.

[0032] Reference Figure 4 and Figure 5The stabilizing device 3 includes end-connecting frames 4, supporting mechanisms 5, and pulling mechanisms 6. In this embodiment, the four sets of reinforced retaining walls 2 arranged around the outer perimeter of the pier 1 have a total of two sets of end-connecting frames 4, two sets of supporting mechanisms 5, and two sets of pulling mechanisms 6. Among them, the two sets of end-connecting frames 4 are located at the radial ends of the pier 1, respectively.

[0033] Reference Figure 4 and Figure 5 Each set of end-connecting frames 4 includes an end-connecting plate 41 and a bottom support assembly 42. The bottom support assembly 42 includes a plug-in tube 421 and a pressing block 422. The plug-in tube 421 can be a steel pipe with a solid side wall and has high compressive strength. The plug-in tube 421 is inserted vertically into the foundation and is located on the side of the bearing plate 22 away from the pier 1.

[0034] Reference Figure 4 and Figure 5 In this embodiment, the pressing block 422 can be a block formed after the concrete slurry has solidified, and the outer circumferential dimensions of the pressing block 422 are adapted to the inner diameter of the cavity of the insertion tube 421. After the operator places the pressing block 422 into the cavity of the insertion tube 421, it increases the self-weight of the insertion tube 421 on the foundation and limits the position of the insertion tube 421 on the foundation by pressing against the insertion tube 421, thereby helping to improve the positional stability and application stability of the insertion tube 421 on the foundation.

[0035] Reference Figure 4 and Figure 5 In this embodiment, the end plate 41 can be a precast concrete wall panel, and the end plate 41 is welded horizontally to the outer peripheral wall of the insertion cylinder 421. After the insertion cylinder 421 is inserted into the foundation, the bottom wall of the end plate 41 can abut against the top wall of the adjacent reinforced retaining wall 2. In this embodiment, the end plate 41 and the bearing plate 22 are welded together to ensure the positional stability of the end plate 41 on the reinforced retaining wall 2. At this time, the end plate 41 is stably positioned above the foundation by being supported by the insertion cylinder 421 and the reinforced retaining wall 2.

[0036] Reference Figure 4 and Figure 5 Two sets of supporting mechanisms 5 are respectively installed on the end walls of the two end plates 41 that are close to each other. Each set of supporting mechanisms 5 includes a limiting arc plate 51. In this embodiment, the limiting arc plate 51 can be an arc plate whose inner diameter arc matches the outer circumference arc of the pier 1. The limiting arc plate 51 is welded to the end wall of the end plate 41 facing the pier 1. The reinforcing retaining wall 2 is provided with a fixing component 7 for limiting the position of the end plate 41 or the limiting arc plate 51. The fixing component 7 includes a pre-stop screw 71, a fixing nut 72, and a fastening unit 73.

[0037] Reference Figure 5The pre-stop screw 71 is welded vertically to the top wall of the bearing plate 22, which is away from the foundation, and the pre-stop screw 71 can pass through the end plate 41 or the limiting arc plate 51. The connecting unit 73 is disposed between the bearing plate 22 and the end plate 41, or between the bearing plate 22 and the limiting arc plate 51. Each connecting unit 73 includes multiple sets of spring members 731 and two connecting plates 732, wherein the connecting plate 732 can be a solid steel plate, and the spring members 731 can be steel compression springs. One end of each spring member 731 is welded to one of the connecting plates 732, and the other connecting plate 732 is welded to the other end of each spring member 731. When the two connecting plates 732 approach each other, the spring members 731 can compress and deform between the two connecting plates 732.

[0038] Reference Figure 4 and Figure 5 One of the connecting plates 732, with its sidewall away from the spring member 731, is welded to the sidewalls of the end plate 41 and the limiting arc plate 51 facing the bearing plate 22. After the end plate 41 is installed on the top wall of the reinforced retaining wall 2, each pre-abutting screw 71 can pass through the end plate 41 or the limiting arc plate 51. At this time, the bottom walls of the limiting arc plate 51 and the end plate 41 are respectively connected to the top wall of the bearing plate 22 through the tight connecting unit 73, and the limiting arc plate 51 can abut against the outer peripheral wall of the pier 1.

[0039] Reference Figure 4 and Figure 5 After the operator tightens the locking nut 72 onto the pre-stop screw 71, the end plate 41 or the limiting arc plate 51 can be stably positioned on the bearing plate 22. At this time, the spring 731 is in a compressed deformation state between the two connecting plates 732. The compressed spring 731 can react on the end plate 41 or the limiting arc plate 51 through the elastic force generated by its own compression, thereby reducing the connection gap between the bearing plate 22 and the end plate 41, and between the bearing plate 22 and the limiting arc plate 51. This helps to improve the positional stability and application stability of the end plate 41 and the limiting arc plate 51 on the reinforced retaining wall 2.

[0040] Reference Figure 4 and Figure 5 The tie mechanism 6 is used to connect the limiting arc plates 51 located at both radial ends of the pier 1. In this embodiment, the two sets of supporting mechanisms 5 located at both radial ends of the pier 1 are connected by a tie mechanism 6. Each set of tie mechanisms 6 includes a positioning block 61, a fixed abutment block 62, a middle extension plate 63, and a fixing block 64. The positioning block 61 is welded to the end wall of one of the limiting arc plates 51 away from the end plate 41, the fixed abutment block 62 is welded to the end wall of the other limiting arc plate 51 away from the end plate 41, the middle extension plate 63 is welded horizontally to the side wall of the fixed abutment block 62 facing the positioning block 61, and the fixing block 64 is welded to the side wall of the middle extension plate 63 away from the fixed abutment block 62.

[0041] Reference Figure 5 The top wall of the positioning block 61 is also provided with a pre-sinking groove 611, the inner diameter of which is adapted to the outer circumference of the insertion block 64. After one of the limiting arc plates 51 is installed on the reinforcing retaining wall 2, the other limiting arc plate 51 is installed from top to bottom along the vertical direction of the pier 1 so that the insertion block 64 can be inserted into the inner cavity of the pre-sinking groove 611. At this time, the limiting arc plates 51 at both radial ends of the pier 1 form a tension relationship. While the limiting arc plates 51 provide stable support to the pier 1, the reinforcing retaining wall 2, the end plate 41, and the limiting arc plates 51 at both radial ends of the pier 1 can apply a continuous tension force to the pier 1, thereby helping to ensure the structural stability and application stability of the pier 1.

[0042] Reference Figure 4 and Figure 6 To further improve the positional and operational stability of the pier 1 on the foundation, the viaduct structure with continuous tension support also includes an external connection mechanism 8. The external connection mechanism 8 connects the bridge frame 11 and the end plate 41 to increase the vertical stress stability of the end plate 41 and the pier 1.

[0043] Reference Figure 4 and Figure 6 The external connection mechanism 8 includes an external connection cable 81, a locking hook 82, and a positioning arc plate 83. The external connection cable 81 can be a cable that can deform along its length. One end of the external connection cable 81 along its length is fixed to the bottom wall of the cable tray 11 by bolts, and the locking hook 82 is welded to the other end of the external connection cable 81 along its length.

[0044] Reference Figure 6 The positioning arc plate 83 is welded to the top wall of the end plate 41. Operators can hook the locking hook 82 onto the positioning arc plate 83, causing the external connecting cable 81 to be tautly connected between the bridge frame 11 and the end plate 41. This generates a certain tensile force between the bridge frame 11, the end plate 41, and the pier 1, ensuring the structural and operational stability of the viaduct structure. It should be noted that the external connecting cable 81, which can deform moderately, helps ensure its operational stability in strong winds, reducing the likelihood of breakage due to excessive rigidity.

[0045] The implementation principle of a continuous tension-supported viaduct structure in this application embodiment is as follows: the reinforced retaining wall 2 set around the outer perimeter of the pier 1 can improve the stability of the surrounding land and help reduce the impact of water flow on the pier 1.

[0046] The end plate 41 is stably erected above the foundation by the support of the plug-in cylinder 421 and the reinforced retaining wall 2. The limiting arc plate 51 is installed on the end plate 41 and abuts against the outer peripheral wall of the pier 1 to provide stable support for the pier 1. As the limiting arc plates 51 located at both ends of the pier 1 pull against each other, a continuous tension and support is formed between the pier 1, the limiting arc plate 51, the end plate 41 and the reinforced retaining wall 2, which helps to ensure the positional stability and application stability of the pier 1 on the foundation rich in water resources.

[0047] The external connecting cable 81 is tensioned between the bridge frame 11 and the end plate 41, so that the bridge frame 11, the end plate 41, and the pier 1 form a stable tension, which helps to ensure the overall structural stability and application stability of the viaduct.

[0048] This application also discloses a construction method for a continuously tension-braced viaduct structure, the construction method including the following construction steps: Reinforcement: A reinforcing retaining wall 2 is installed around the outer perimeter of each pier 1.

[0049] In this process, the impact piles 21 are first driven into the foundation, and then the impact plate 22 is fitted onto the adjacent impact piles 21 to form a reinforced retaining wall 2.

[0050] Support: First, install the end bracket 4 at one radial end of pier 1, and then install the end bracket 4 at the other radial end of pier 1. Install the spring member 731 and the connecting plate 732 on the bottom wall of the end plate 41 and the limiting arc plate 51 in advance. After the plug-in cylinder 421 is driven into the foundation, the end plate 41 can abut against the top wall of the reinforced wall.

[0051] After all the pre-stop screws 71 have passed through the end plate 41 and the limiting arc plate 51, the fixing nut 72 is threaded onto the pre-stop screws 71, so that the end plate 41 and the limiting arc plate 51 are positioned on the reinforced retaining wall 2. At this time, the previously installed limiting arc plate 51 can abut against the outer peripheral wall of the pier 1.

[0052] Locking Position: Install the end bracket 4 located at the other radial end of pier 1 according to the installation steps of the bracing. During this process, the limiting arc plate 51 is installed from top to bottom along the vertical direction of pier 1 so that the insert block 64 can be inserted into the cavity of the pre-sinking groove 611. At this time, the limiting arc plates 51 located at both radial ends of pier 1 form a tension relationship. While the limiting arc plates 51 provide stable bracing for pier 1, the reinforcing retaining wall 2, end bracket 41, and limiting arc plate 51 located at both radial ends of pier 1 can apply a continuous tension force to pier 1, thereby helping to ensure the structural stability and application stability of pier 1.

[0053] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A continuously tension-supported viaduct structure, comprising multiple piers (1) and a bridge frame (11) mounted on all the piers (1), characterized in that: The continuously tension-supported viaduct structure also includes multiple sets of reinforcing retaining walls (2) arranged around the outer perimeter of each pier (1) and abutment devices (3) arranged on the reinforcing retaining walls (2) to define the position of the pier (1); the abutment device (3) includes an end frame (4) arranged on the reinforcing retaining wall (2) to reinforce the reinforcing retaining wall (2), abutment mechanisms (5) arranged on the end frame (4), and a tension mechanism (6) for connecting all adjacent abutment mechanisms (5); the two sets of abutment mechanisms (5) on each pier (1) are connected by a tension mechanism (6). The reinforced retaining walls (2) are connected by a set of tie rods (6); gaps are left between adjacent reinforced retaining walls (2); each reinforced retaining wall (2) includes multiple impact piles (21) and multiple impact plates (22) set on the foundation; each impact plate (22) has a pre-connection channel (221) with a size adapted to the impact pile (21) through it, all impact plates (22) are fitted onto the impact pile (21) through the pre-connection channel (221), and the multiple impact plates (22) fitted onto the impact pile (21) abut against each other along the axial direction of the impact pile (21); the end frame (4) includes a set of tie rods (6) for connecting the reinforcing retaining walls (21). The base support assembly (42) on the foundation and the end plate (41) on the base support assembly (42); the base support assembly (42) includes a plug-in cylinder (421) on the foundation, one end of the end plate (41) is connected to the plug-in cylinder (421), and the other end is set on the nearby reinforced retaining wall (2); the inner cavity of the plug-in cylinder (421) is also provided with a pressing block (422) formed by the solidification of concrete slurry; the supporting mechanism (5) includes a limiting arc plate (51), the limiting arc plate (51) is set on the end plate (41) away from the plug-in cylinder (421). One end of the pier (1) is provided with a retaining component (7) for limiting the end plate (41) or the retaining arc plate (51); the continuous tension support viaduct structure also includes an external connection mechanism (8) for connecting the bridge frame body (11) and the end plate (41); the reinforced retaining wall (2) provided around the outer perimeter of the pier (1) compacts the foundation around the pier (1) by its own weight, which helps to reduce the loosening of the geology around the pier (1).

2. The viaduct structure with continuous tension support according to claim 1, characterized in that: The pull mechanism (6) includes a positioning block (61), a stop block (62), a middle extension plate (63), and a insertion block (64). The positioning block (61) is disposed on the end wall of one of the limiting arc plates (51) away from the end plate (41). The middle extension plate (63) is disposed on the end wall of another limiting arc plate (51) away from the end plate (41) via the stop block (62). The insertion block (64) is disposed at one end of the middle extension plate (63) away from the stop block (62). The positioning block (61) is provided with a pre-sinking groove (611) for the insertion block (64) to be inserted.

3. The viaduct structure with continuous tension support according to claim 2, characterized in that: The positioning assembly (7) includes a pre-stop screw (71) and a positioning nut (72); the pre-stop screw (71) is disposed on a bearing plate (22) that can abut against the end plate (41) or the limiting arc plate (51), and the pre-stop screw (71) passes through the end plate (41) or the limiting arc plate (51); the positioning nut (72) is threaded onto the pre-stop screw (71) so that the end plate (41) or the limiting arc plate (51) is positioned on the bearing plate (22).

4. The viaduct structure with continuous tension support according to claim 3, characterized in that: The retaining assembly (7) further includes a fastening unit (73), which includes multiple sets of springs (731) and two connecting plates (732) disposed at both ends of all the springs (731); one of the connecting plates (732) is fixed to the side wall of the end plate (41) and the limiting arc plate (51) facing the impact plate (22).

5. The viaduct structure with continuous tension support according to claim 4, characterized in that: The external connection mechanism (8) includes a deformable external cable (81), a locking hook (82) at one end of the external cable (81), and a positioning arc plate (83) on the end plate (41). The end of the external cable (81) away from the locking hook (82) is located on the cable tray body (11). The external cable (81) is connected to the positioning arc plate (83) through the locking hook (82) to be tensioned between the cable tray body (11) and the end plate (41).

6. A construction method for a continuously tension-supported viaduct structure according to claim 5, characterized in that: The construction method includes the following construction steps: Reinforcement: A reinforced retaining wall (2) is installed around the outer perimeter of each pier (1) for future use; Support: Install the end frame (4) and the support mechanism (5) on the reinforced retaining wall (2), and make two support mechanisms (5) on the outer perimeter wall of each pier (1) to provide support, for backup; Locking position: Two bracing mechanisms (5) on each pier (1) are connected by a pull-pull mechanism (6).

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