Connecting device for reducing slippage of bridge pier and construction method of connecting device

Abstract

The invention relates to the technical field of bridge pier reinforcing and limiting construction, and provides a connecting device for reducing bridge pier slippage aiming at the situation that a traditional bridge pier close to a cofferdam is prone to slippage due to excavation of a cofferdam soil mass, the connecting device is characterized in that the connecting device comprises two connecting rings, and the two connecting rings are arranged on the peripheries of the two adjacent bridge piers in a sleeving mode; each connecting ring is formed by splicing a plurality of arc-shaped box bodies; the close ends of the adjacent arc-shaped box bodies are connected through a connecting assembly. And a plurality of connecting rods are further arranged between the two connecting rings, and the two ends of each connecting rod are fixedly connected with the opposite sides of the two connecting rings through connecting pieces correspondingly. The method has the effect of limiting the piers close to the cofferdam from sliding easily due to excavation of the soil body of the cofferdam.

Description

Technical Field

[0001] The present application relates to the field of bridge pier reinforcement and limiting construction, and in particular to a connection device for reducing bridge pier slippage and a construction method thereof. Background Art

[0002] When constructing underwater cofferdam structures, due to construction requirements, it is sometimes necessary to carry out related construction in the adjacent areas of existing bridge piers.

[0003] During the construction of the underwater cofferdam structure, underwater soil excavation is required. During the excavation of the soil in the cofferdam area, it is easy to cause a certain disturbance to the soil near the bottom of the adjacent piers, causing the soil near the piers to loosen, shift or even flow, and eventually cause the entire pier to slip, which has a certain impact on the stability of the bridge structure; therefore, there is room for improvement. Summary of the invention

[0004] In order to limit the slippage of bridge piers adjacent to the cofferdam structure during the cofferdam construction process, the present application provides a connection device for reducing the slippage of the bridge piers and a construction method thereof.

[0005] The present application provides a connection device for reducing bridge pier slippage and a construction method thereof, which adopts the following technical solutions: A connection device for reducing the slippage of bridge piers comprises two connection rings, which are respectively sleeved on the outer peripheries of two adjacent bridge piers; the connection rings are assembled from a plurality of arc-shaped boxes; the adjacent ends of the arc-shaped boxes are connected by a connection assembly; a plurality of connection rods are also arranged between the two connection rings, and both ends of the connection rods are respectively connected and fixed to the opposite sides of the two connection rings by connecting pieces.

[0006] By adopting the above technical scheme, a connecting structure connecting two adjacent piers is formed by using a connecting ring sleeved on adjacent piers and a plurality of connecting rods connected between the two connecting rings, so as to improve the connection integrity between the two adjacent piers and limit the displacement of the piers near the cofferdam construction area due to the subsequent excavation of the underwater soil of the cofferdam; a plurality of connecting rings are assembled from a plurality of arc-shaped boxes, and the arc-shaped boxes are subsequently moved to the outer periphery of the corresponding pier, and the adjacent ends of the arc-shaped boxes are connected by connecting components, so that the sleeve can be fixed on the outer periphery of the pier, which is convenient for the disassembly and assembly of the connecting ring.

[0007] Preferably, a plurality of steel strands are arranged between the two connecting rings, and a plurality of connecting seats are arranged corresponding to the steel strands on the two connecting rings, and both ends of the steel strands are tensioned and fixed on the connecting seats corresponding to the two connecting rings by anchors.

[0008] By adopting the above technical solution, after completing the installation of the connecting rings on the two piers, the steel strands are tensioned and fixed between the two connecting rings so as to further limit and fix the two connecting rings with the steel strands, which is beneficial to further improve the connection integrity between the two adjacent piers and limit the subsequent sliding of the piers near the cofferdam construction area due to the excavation of the cofferdam soil.

[0009] Preferably, the connecting member comprises a plurality of angle iron members, and two ends of the angle iron members are respectively welded and fixed to the arc-shaped box body of the connecting rod and the connecting ring.

[0010] By adopting the above technical solution, after the connecting rod is moved between the connecting rings of the two piers, the connecting rod can be firmly installed on the two connecting rings by welding the two ends of the angle iron piece to the connecting rod and the arc box respectively.

[0011] A construction method for a connection device for reducing pier slippage comprises the following steps: S1: Connection ring assembly: several arc-shaped boxes are hoisted to the outer periphery of the corresponding bridge piers; the adjacent ends of the adjacent arc-shaped boxes are connected by connection components to form a connection ring; S2: Connecting rod in place: move the connecting rod between the two steel casings; S3: Connecting rod installation and fixation: Connect the two ends of the connecting rod to the arc-shaped box on the opposite side of the two adjacent connecting rings through connecting pieces.

[0012] By adopting the above technical solution, after the arc-shaped boxes are spliced ​​at the two piers to form a connecting ring sleeved on the outer periphery of the pier, the two ends of the connecting rod are respectively connected between the two connecting rings through connecting pieces; the two adjacent piers are limited and fixed by using two connecting rings and a number of connecting rods to limit the subsequent sliding of the piers near the cofferdam construction area due to the excavation of the underwater soil of the cofferdam.

[0013] Preferably, the specific steps of step S2 are as follows: S2.1: Installation of guide beams: Install guide beams on the sides of the two piers close to the caps, and extend one end of the guide beam out of the cap to form a cantilever end; S2.2: Two sliding seats for inserting the guide beams are welded at two locations corresponding to the two guide beams at the bottom of the connecting rod; S2.3: Connecting rod placement: Move the connecting rod so that the two sliding seats at the bottom of the connecting rod are respectively inserted into the cantilevered ends of the two guide beams; S2.4: Move the connecting rod along the two guide beams until the connecting rod is located between the connecting rings of the two piers.

[0014] By adopting the above technical scheme, on the one hand, when installing the connecting rod, the two sliding seats of the connecting rod can be respectively inserted into the cantilevered ends of the two guide beams, and then the connecting rod can be moved from the outside of the pedestal to between the connecting rings of the two piers along the guide beam. Compared with the method of hoisting the connecting rod between the two piers by lifting equipment, the problem of limited movement of the connecting rod and greater difficulty in operation due to wind force and the narrow space between the two piers is reduced. On the other hand, after the two ends of the connecting rod are respectively connected to the two connecting rings through connecting pieces, the two ends of the connecting rod can be auxiliary supported by the guide beams at the pedestals of the two piers, which is beneficial to improve the stress condition of the connecting pieces at both ends of the connecting rod and is beneficial for the connecting pieces to more firmly connect and fix the connecting rings and the connecting rod.

[0015] Preferably, in step S2.1, after the guide beam is installed, a winch is installed at one end of the guide beam away from the cantilever end; In step S2.4, the winch cable is connected to the connecting rod located at the cantilevered end of the guide beam, and the connecting rod is driven by the winch to move along the guide beam.

[0016] By adopting the above technical solution, after the cables of the two winches are respectively connected to the connecting rods located at the cantilevered ends of the two guide beams, the connecting rod can be pulled along the two guide beams toward the two connecting rings by winding the cables of the two winches, making the movement of the position of the connecting rod simpler and more convenient.

[0017] Preferably, in step S2.1, after the guide beam is installed, a support rod is installed between the cantilevered ends of the two guide beams, and a plurality of three-way jacks are installed on the support rod; In step 2.3, when moving the connecting rod, make the connecting rod first abut against the piston rod of the Z-axis jack of the three-way jack, and use the three-way jack to assist in adjusting the position of the connecting rod so that the two sliding seats at the bottom of the connecting rod are respectively opposite to the two cantilevered ends of the guide beams, and then use the three-way jack to drive the connecting rod downward until the sliding seat at the bottom of the connecting rod is inserted into the corresponding guide beam.

[0018] By adopting the above technical solution, when the connecting rod is hoisted on water, it is easy to shake due to external environmental factors such as sea breeze during the hoisting process. When the connecting rod is directly hoisted until the connecting rod is completely placed, the position of the connecting rod needs to be adjusted repeatedly, which makes the construction difficult. The connecting rod to be installed is firstly made to abut against the piston rod of the Z-axis jack of the three-way jack on the support rod through the hoisting equipment. The three-way jack can be used to limit the shaking of the connecting rod due to wind force, and then the position of the connecting rod is adjusted through the cooperation of several three-way jacks, so that the two slides at the bottom of the connecting rod can be quickly and accurately aligned with the corresponding guide beams, thereby making it easier for the two slides to be inserted into the corresponding guide beams.

[0019] Preferably, in step S3, after the connecting rod is moved along the two guide beams to between the two connecting rings, the sliding seat is welded and fixed to the guide beams.

[0020] By adopting the above technical solution, by welding and fixing the slide seat on the guide beam, on the one hand, the initial positioning of the beam is achieved, and the sliding of the connecting rod is restricted, so as to facilitate the subsequent connection of the arc box and the connecting rod through the angle iron piece; on the other hand, a plurality of connecting rods can be connected and reinforced through two guide beams to form an integral structure between the plurality of connecting rods, which is beneficial to improving the structural stability between the plurality of connecting rods, so that the plurality of connecting rods can better connect and limit the connecting rings on the two piers.

[0021] In summary, the present application includes at least one of the following beneficial technical effects: 1. By installing connecting rings at two adjacent piers and installing several connecting rods between the two connecting rings, the connecting rods are used to connect the connecting rings on the outer peripheries of the two piers to limit and fix the two piers, thereby improving the connection integrity between the two piers and reducing the subsequent piers adjacent to the cofferdam structure from slipping due to soil disturbance caused by cofferdam construction, thereby affecting the stability of the bridge structure.

[0022] 2. By supporting guide beams on the side close to the two piers respectively and extending one end of the guide beam out of the pier pedestal to form a cantilevered end, and at the same time welding a sliding seat compatible with the guide beam at the bottom of the connecting rod, on the one hand, when installing the connecting rod, the two sliding seats of the connecting rod can be respectively inserted into the cantilevered ends of the two guide beams to achieve preliminary positioning of the connecting rod, and then the connecting rod is slid along the guide beam to between the connecting rings of the two piers to achieve smooth and stable movement of the connecting rod between the two connecting rings. On the other hand, after the two ends of the connecting rod are subsequently connected to the two connecting rings respectively through connecting pieces, the cooperation between the sliding seat and the guide beam can be used to auxiliary support the end of the connecting rod, which is beneficial to improve the stress condition of the connecting piece at the end of the connecting rod, so that the connecting piece can more firmly connect the connecting rod and the connecting ring.

[0023] 3. By installing a support rod between the cantilevered ends of the two guide beams and installing a number of three-way jacks on the support rod, when the connecting rod is subsequently lowered so that the two slides of the connecting rod are respectively inserted into the two guide beams, the bottom side of the connecting rod can first be made to abut against the piston rod end of the Z-direction jack of the three-way jack, and then the position of the connecting rod can be adjusted through the cooperation of the three-way jack, so that the two slides at the bottom of the connecting rod are respectively opposite to the two guide beams, and then the connecting rod is driven downward by the three-way jack until the two slides of the connecting rod are respectively inserted into the two guide beams. This is beneficial to limit the shaking of the connecting rod due to external wind force when the hoisting equipment is hoisting the connecting rod, thereby facilitating the rapid positioning of the connecting rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram used to illustrate the connection device between two adjacent piers in an embodiment of the present application.

[0025] Figure 2 yes Figure 1 Enlarged schematic diagram of part A in the middle.

[0026] Figure 3 It is a schematic diagram of the embodiment of the present application used to illustrate the state when the connecting rod is installed.

[0027] Figure 4 yes Figure 3 Enlarged schematic diagram of part B in the middle.

[0028] Description of reference numerals: 1. Bridge pier; 11. Capping platform; 2. Connecting ring; 21. Arc-shaped box; 211. Mounting opening; 22. Connecting seat; 3. Connecting rod; 31. Angle iron piece; 32. Sliding seat; 4. Steel strand; 5. Guide beam; 51. Support rod; 52. Three-way jack; 6. Winch. DETAILED DESCRIPTION

[0029] The following is combined with Figure 1-4 This application is described in further detail.

[0030] The embodiments of the present application disclose a connection device for reducing the slippage of a bridge pier and a construction method thereof.

[0031] A connection device to reduce the slippage of bridge piers, referring to Figure 1 and Figure 2 , including two connecting rings 2 and a plurality of connecting rods 3. The two connecting rings 2 are respectively sleeved on the outer peripheries of two adjacent bridge piers 1. The plurality of connecting rods 3 are all located between the two connecting rings 2. Both ends of the connecting rings 2 are respectively connected to the opposite sides of the two connecting rings 2 through connecting pieces.

[0032] The connecting ring 2 is assembled from two arc-shaped boxes 21, and the two arc-shaped boxes 21 are connected at one end by a connecting component. The connection assembly includes a plurality of connection bolts, which are all inserted through the box wall between adjacent arc-shaped boxes 21, and the box wall at the end of the arc-shaped box 21 is provided with a through hole for the connection bolts to be inserted. The tail end of the connection bolt is threadedly connected with a fastening nut, and the fastening nut is pressed against the inner side of the box wall of the arc-shaped box 21, so as to realize the fastening connection of adjacent arc-shaped boxes 21 and facilitate the disassembly and assembly of the connection ring 2.

[0033] An installation opening 211 is provided at the top of the arc-shaped box body 21, and an entry and exit ladder is welded to the inner wall of the arc-shaped box body 21, and the top end of the ladder extends to the installation opening 211, so that subsequent construction personnel can enter the inner cavity of the arc-shaped box body 21 through the installation opening 211 and the ladder to connect the adjacent ends of adjacent arc-shaped boxes 21 through connecting components.

[0034] The inner and outer sides of the arc box 21 are coated with anti-rust agent to reduce the rust damage of the arc box 21 during subsequent use. A plurality of reinforcing ribs are vertically arranged inside the arc box 21, and the opposite sides of the reinforcing ribs are welded and fixed to the opposite inner cavity walls of the arc box 21 to improve the overall structural strength of the arc box 21.

[0035] In this embodiment, the connecting rod 3 is a metal square tube. In actual construction, the connecting rod 3 can also be made of double-jointed I-beams and other materials. The connecting parts include two angle iron pieces 31, which are respectively located on opposite sides of the ends of the connecting rod 3. The two ends of the angle iron pieces 31 are respectively welded and fixed to the connecting rod 3 and the outer side of the arc box 21, so as to realize the fastening connection between the connecting rod 3 and the connecting ring 2, so as to facilitate the subsequent two connecting rings 2 to cooperate with a number of connecting rods 3 between the two connecting rings 2 to connect and limit the two adjacent bridge piers 1, so as to limit the subsequent bridge piers 1 near the cofferdam construction area from slipping due to the excavation of the underwater soil of the cofferdam.

[0036] A guide beam 5 is provided on the side close to the two connecting rings 2. In the present embodiment, the guide beam 5 is a double I-beam. The two guide beams 5 are respectively located on the side close to the two bridge piers 1, and the guide beams 5 are fixed on the pedestal 11 of the bridge pier 1 by a plurality of anchor bolts. The guide beam 5 is located at the bottom of the connecting rod 3 and is arranged vertically with the connecting rod 3. Two slides 32 are welded to the guide beams 5 on the pedestal 11 of the two bridge piers 1 at the bottom of the connecting rod 3, and the slides 32 are all inserted into the corresponding guide beams 5 and the slides 32 are all welded and fixed on the guide beams 5. Through the above arrangement, on the one hand, when installing the connecting rod 3, the slide 32 at the bottom of the connecting rod 3 can be inserted into the corresponding connecting rod 3 to achieve temporary positioning of the connecting rod 3, so as to facilitate the subsequent welding of the two ends of the angle iron piece 31 to the connecting rod 3 and the arc box 21 respectively. On the other hand, the cooperation between the slide seat 32 and the guide beam 5 can realize auxiliary support for the end of the connecting rod 3, which is beneficial to improve the stress condition of the angle iron piece 31 at the end of the connecting rod 3, so that the angle iron piece 31 can better connect the arc box 21 and the connecting rod 3.

[0037] A plurality of steel strands 4 are also arranged between the two connection rings 2, and a plurality of connection seats 22 are welded to the two connection rings 2 corresponding to the plurality of steel strands 4; the connection seats 22 on the two connection rings 2 are respectively located on the arc-shaped box 21 on the side away from each other of the two connection rings 2. Both ends of the steel strands 4 are tensioned and fixed to the corresponding connection seats 22 on the two connection rings 2 by anchors. The above arrangement is conducive to further improving the connection integrity between the two adjacent connection rings 2, and thus is conducive to better limiting and fixing the two bridge piers 1.

[0038] A construction method for a connection device that reduces the slippage of a bridge pier, referring to Figure 3 and Figure 4 , including the following steps: S1: Assemble the connecting ring 2. The specific steps are as follows: S1.1: A plurality of arc-shaped boxes 21 are hoisted and placed to the outer periphery of the corresponding bridge pier 1 by means of a floating crane, and the bottoms of the arc-shaped boxes 21 are in contact with the cap 11 at the bottom of the bridge pier 1; S1.2: After the installer enters the adjacent arc box 21 through the installation opening 211 at the top of the arc box 21, he or she sequentially passes the connecting screws through the corresponding holes on the box wall at the adjacent end of the arc box 21; screws the connecting nut into the tail end of the connecting bolt and tightens the connecting nut against the inner side of the box wall at the end of the arc box 21 to complete the assembly of the connecting ring 2.

[0039] S2: Connecting rod 3 is in place, the specific steps are as follows:.

[0040] S2.1: Installation of guide beam 5: S2.1.1: Use floating cranes to hoist two guide beams 5 to the adjacent sides of the caps 11 of two piers 1, and make one end of the guide beam 5 extend out of the cap 11 to form a cantilever end; use a number of anchor bolts to fix the guide beam 5 to the cap 11 of the pier 1; S2.1.2: Hang the support rod 51 between the cantilevered ends of the two guide beams 5, and weld and fix the two ends of the support rod 51 to the adjacent sides of the two guide beams 5; S2.1.3: Install a number of three-way jacks 52 on the support rod 51; S3.1.4: Install a winch 6 at the end of the guide beam 5 away from the cantilever end.

[0041] S2.2: Installation of the slide 32: Two slides 32 for inserting into the guide beams 5 are welded at two locations corresponding to the guide beams 5 at the bottom of the connecting rod 3; during the actual construction process, the installation and fixation of the slide 32 can be completed in advance in the factory to improve the overall construction efficiency.

[0042] S2.3: Connecting rod 3 is in place. The specific steps are as follows: S2.3.1: Use floating crane to hoist the connecting rod 3 above the cantilevered ends of the two guide beams 5, and make the bottom of the connecting rod 3 abut against the top of the Z-direction jack piston rod of the three-direction jack 52 on the support rod 51; S2.3.2: The position of the connecting rod 3 is adjusted by the three-way jack 52 so that the two sliding seats 32 at the bottom of the connecting rod 3 are opposite to the two guide beams 5 respectively.

[0043] S2.3.3: Connecting rod 3 is placed in position: the connecting rod 3 is moved downward by the three-way jack 52 until the two sliding seats 32 of the connecting rod 3 are respectively inserted into the cantilevered ends of the two guide beams 5.

[0044] S2.3.4: Disconnect the floating crane from connecting rod 3.

[0045] S2.4: Connecting rod 3 moves: The specific steps are as follows: S2.4.1: Connect the winch 6 cable to the connecting rod 3 located at the cantilevered ends of the two guide beams 5; S2.4.2: The cables are rolled up by two winches 6 to pull the connecting rod 3 to slide along the two guide beams 5 until the connecting rod 3 is located between the two connecting rings 2; S2.4.3: Disconnect the connection between the winch 6 cable and the connecting rod 3.

[0046] S2.5: Repeat steps S2.3 to S2.4 until the remaining connecting rods 3 are in place.

[0047] S3: Install and fix the connecting rod 3: The specific steps are as follows: S3.1: Weld and fix the slide seat 32 at the bottom of the connecting rod 3 to the guide beam 5; S3.2: Connect the two ends of the connecting rod 3 to the arc-shaped boxes 21 on the opposite sides of the two adjacent connecting rings 2 through the angle iron pieces 31 respectively.

[0048] S4: Remove the hoist 6 and the support rod 51 on the guide beam 5, and cut off the cantilevered end of the guide beam 5.

[0049] S5: tensioning and connecting the steel strands 4: tensioning and fixing the two ends of the steel strands 4 to the corresponding connection seats 22 on the two connection rings 2 by means of anchors.

[0050] When laying the guide beam 5, one end of the guide beam 5 is extended out of the base 11 to form a cantilevered end. Subsequently, the two sliding seats 32 of the connecting rod 3 can be respectively inserted into the cantilevered ends of the two guide beams 5 to achieve preliminary positioning of the connecting rod 3, and then the connecting rod 3 is moved along the guide beam 5 to between the two connecting rings 2, which is convenient for quickly and accurately moving the connecting rod 3 into place. Compared with the method of hoisting the connecting rod 3 between the two connecting rings 2 by hoisting equipment, the situation that the connecting rod 3 is easy to collide with the connecting ring 2 when the connecting rod 3 is hoisted in the narrow space of the two connecting rings 2 is reduced, which is beneficial to reducing the overall installation difficulty of the connecting rod 3.

[0051] By first making the connecting rod 3 abut against the Z-direction jack piston rod of the three-way jack 52 and adjusting the position of the connecting rod 3 through the three-way jack 52, so that the slide 32 is opposite to the corresponding guide beam 5, and then lowering the connecting rod 3 through the three-way jack 52 until the slide 32 at the bottom of the connecting rod 3 is inserted into the corresponding guide beam 5. Compared with the method of directly lowering the connecting rod 3 through floating crane, on the one hand, the three-way jack 52 facilitates accurate adjustment of the position of the connecting rod 3, so that the slide 32 at the bottom of the connecting rod 3 can be better opposite to the corresponding guide beam 5. On the other hand, it reduces the shaking of the connecting rod 3 during the lowering and position adjustment process due to factors such as wind, which makes it difficult to adjust the position and place the connecting rod 3.

[0052] The present application performs position limiting and fixing of two adjacent piers 1 by sleeve-installing a connecting ring 2 on two adjacent piers 1, installing a connecting rod 3 between the two adjacent piers 1, and tensioning a steel strand 4, thereby improving the connection integrity of the adjacent piers 1, and thereby limiting the slippage of the piers 1 near the cofferdam construction area during the subsequent excavation of the underwater soil of the cofferdam.

[0053] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A connection device for reducing the slippage of a bridge pier, characterized in that: The invention comprises two connecting rings (2), wherein the two connecting rings (2) are respectively sleeved on the outer peripheries of two adjacent bridge piers (1); the connecting rings (2) are assembled from a plurality of arc-shaped boxes (21); the adjacent ends of the arc-shaped boxes (21) are connected via a connecting assembly; a plurality of connecting rods (3) are also arranged between the two connecting rings (2), and both ends of the connecting rods (3) are respectively connected and fixed to the opposite sides of the two connecting rings (2) via connecting pieces.

2. A connection device for reducing pier slippage according to claim 1, characterized in that: A plurality of steel strands (4) are also arranged between the two connecting rings (2), and a plurality of connecting seats (22) are arranged corresponding to the steel strands (4) at the two connecting rings (2), and both ends of the steel strands (4) are tensioned and fixed on the connecting seats (22) corresponding to the two connecting rings (2) by anchors.

3. The connection device for reducing pier slippage according to claim 1, characterized in that: The connecting piece comprises a plurality of angle iron pieces (31), and two ends of the angle iron pieces (31) are respectively welded and fixed on the connecting rod (3) and the arc-shaped box body (21) of the connecting ring (2).

4. A construction method for a connection device for reducing pier slippage according to any one of claims 1 to 3, characterized in that: The following steps are involved: S1: Assembling the connection ring (2): hanging and placing a plurality of arc-shaped boxes (21) to the outer periphery of the corresponding bridge pier (1); connecting the adjacent ends of the adjacent arc-shaped boxes (21) through a connection assembly to form a connection ring (2); S2: Connecting rod (3) in place: Move the connecting rod (3) between the two steel casings; S3: Installing and fixing the connecting rod (3): Connecting the two ends of the connecting rod (3) to the arc-shaped box bodies (21) on opposite sides of two adjacent connecting rings (2) through connecting pieces.

5. The construction method of a connection device for reducing pier slippage according to claim 4, characterized in that: The specific steps of step S2 are as follows: S2.1: Installation of the guide crossbeam (5): The guide crossbeams (5) are respectively installed on the side close to the pedestal (11) of the two bridge piers (1) and one end of the guide crossbeam (5) is extended out of the pedestal (11) to form a cantilevered end; S2.2: Two sliding seats (32) for inserting the guide beams (5) are welded at two locations corresponding to the guide beams (5) at the bottom of the connecting rod (3); S2.3: The connecting rod (3) is placed in position: the connecting rod (3) is moved so that the two sliding seats (32) at the bottom of the connecting rod (3) are respectively inserted into the cantilevered ends of the two guide beams (5); S2.4: Move the connecting rod (3) along the two guide beams (5) until the connecting rod (3) is located between the connecting rings (2) of the two bridge piers (1).

6. The construction method of the connection device for reducing pier slippage according to claim 5 is characterized in that: In step S2.1, after the guide beam (5) is installed, a winch (6) is installed at the end of the guide beam (5) away from the cantilever end; In step S2.4, the cable of the hoist (6) is connected to the connecting rod (3) located at the cantilevered end of the guide beam (5), and the connecting rod (3) is driven by the hoist (6) to move along the guide beam (5).

7. The construction method of a connection device for reducing pier slippage according to claim 6, characterized in that: In step S2.1, after the guide beam (5) is installed, a support rod (51) is installed between the cantilevered ends of the two guide beams (5), and a plurality of three-way jacks (52) are installed on the support rod (51); In step 2.3, when moving the connecting rod (3), the connecting rod (3) is firstly abutted against the piston rod of the Z-axis jack of the three-way jack (52), and the position of the connecting rod (3) is assisted by the three-way jack (52) so that the two slide seats (32) at the bottom of the connecting rod (3) are respectively opposite to the cantilevered ends of the two guide beams (5), and then the connecting rod (3) is driven downward by the three-way jack (52) until the slide seat (32) at the bottom of the connecting rod (3) is inserted into the corresponding guide beam (5).

8. The construction method of a connection device for reducing pier slippage according to claim 5, characterized in that: In step S3, after the connecting rod (3) is moved along the two guide beams (5) to between the two connecting rings (2), the sliding seat (32) is welded and fixed on the guide beam (5).

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