A composite steel structure bearing for bridge horizontal rotation and its implementation method

Abstract

This invention discloses a steel structure composite bearing for bridge horizontal rotation, belonging to the field of bridge construction technology. The steel structure composite bearing includes: a booster reaction seat, detachably connected to the lower bearing platform, composed of an outer booster anchor and an inner booster anchor, arranged relative to the inner and outer sides of the support foot; an upper temporary locking anchor, detachably connected to the upper bearing platform; and a temporary locking anchor member, detachably connected between a set of opposing upper temporary locking anchors and the outer booster anchor. This steel structure composite bearing not only solves the space limitation problem in existing designs but also allows for convenient disassembly and reuse after construction, thereby reducing construction costs and resource waste, and contributing to the future development of bridge construction technology. This invention also mentions an implementation method for the steel structure composite bearing for bridge horizontal rotation.

Description

Technical Field

[0001] This invention belongs to the field of bridge construction technology, and provides a steel structure composite support for bridge horizontal rotation and its implementation method. Background Technology

[0002] Since its initial development in France in the 1940s, bridge rotation construction technology has undergone significant evolution and progress. In particular, the first application of the horizontal rotation method in 1976 laid the foundation for its subsequent practical application on various bridge types. With the continuous development of bridge construction technology in my country, the application of rotating bridges has become increasingly widespread, especially in high-speed railway construction. Although bridge rotation technology has made significant progress, some challenges and areas for improvement still exist in practical operation. For example, during bridge rotation, insufficient power may prevent the beam from rotating, or there may be remedial measures for excessively large angles used in horizontal rotation construction. Therefore, current construction methods incorporate jack-assisted reaction structures, using the installation of I-beams and counter-jacks to assist or push back, ensuring the smooth progress of the rotation process.

[0003] However, in traditional rotation construction, the inner / outer reaction seats are made of concrete, and multiple sets of small formwork need to be made during the integral casting process with the lower foundation, which increases the complexity of construction and makes installation and fixing more cumbersome. At the same time, due to the mechanical properties of concrete itself, its structural dimensions occupy most of the space inside and outside the slide, and will interfere with subsequent construction processes such as rotation load-bearing. In addition, cast-in-place reinforced concrete structures cannot be reused, and small gaps affect the concrete pouring and vibration between the upper and lower foundations.

[0004] In addition, the rotation construction is a delicate and complex engineering project. To prevent back-pushing problems caused by multiple rotations, a certain distance is reserved during construction for fine-tuning. Due to limitations such as construction time and weather, the traditional method is to connect and anchor the steel bars of the upper and lower foundations before fine-tuning. This involves a large amount of installation work, and the steel bars need to be removed and reinstalled before fine-tuning.

[0005] Therefore, the above problems prompt us to find a new solution to simplify the construction process and improve construction efficiency. Summary of the Invention

[0006] In view of this, the purpose of this invention is to provide a steel structure composite bearing for bridge horizontal rotation that is of moderate size, structurally stable, easy to install and dismantle, and recyclable, thereby saving construction space and improving construction efficiency. Another purpose of this invention is to provide a method for implementing the steel structure composite bearing for bridge horizontal rotation.

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

[0008] This invention provides a steel structure composite bearing for bridge horizontal rotation, comprising: a boosting reaction seat, detachably connected to the lower bearing platform, consisting of an outer boosting anchor and an inner boosting anchor, arranged relative to the inner and outer sides of the support foot; an upper temporary locking anchor, detachably connected to the upper bearing platform; and a temporary locking anchor member, detachably connected between a set of opposing upper temporary locking anchors and the outer boosting anchor. Using the above scheme, the design of this composite bearing optimizes volume and saves construction space while ensuring strength and stability. Through reasonable mechanical design, it ensures that the bearing can stably distribute and transmit reaction forces during load-bearing. Furthermore, all parts of the composite bearing are detachable, facilitating rapid installation and disassembly during construction, reducing construction time and labor costs. The material properties of steel structure allow the bearing to be reused in different construction projects, meeting environmental protection and economic efficiency requirements.

[0009] Optionally, the outer booster anchor, the inner booster anchor, and the upper temporary locking anchor all consist of a corner base and a reinforcing plate. At least one reinforcing plate is provided and arranged inside the corner base. The corner base has mounting holes for connecting to pre-embedded anchor bolts, which are installed on the upper or lower bearing platform. This combination of corner base and reinforcing plate design provides excellent bending and shear resistance, ensuring stability during bridge rotation. Furthermore, the pre-embedded anchor bolt design simplifies the support installation process and reduces the complexity of on-site construction. Simultaneously, the anchor design can be adjusted according to the specific bridge structure, enhancing its flexibility and adaptability in different construction environments.

[0010] Optionally, the reinforcing plates of both the outer booster anchor and the upper temporary locking anchor are provided with pin holes for connection to the temporary locking anchor member, and reinforcing plates are added at the pin holes. This addition of reinforcing plates at the pin holes effectively distributes the stress, enhances the stability of the connection, and reduces potential damage caused by dynamic loads. The pin hole design also makes the installation and disassembly of the temporary locking anchor member more convenient, reducing construction time and labor costs. Furthermore, the combination of the reinforcing plates and the rib plate design effectively reduces the risk of anchor failure during rotation, improving construction safety.

[0011] Optionally, a wedge-shaped block is connected to the outer anchor of the jacking system to counteract the thrust beam with the steel plate filling. This design of the wedge-shaped block effectively resists the reverse force, providing additional support and preventing instability during the jacking process. Furthermore, by pre-processing and adjusting the structural angle, the wedge-shaped block can adapt to different construction requirements, enhancing the flexibility of the support system.

[0012] Optionally, the temporary locking anchor component consists of an anchor joint, anchor rods, and adjustable locking heads. Two anchor rods are used, connected at their opposite ends by adjustable locking heads. At their opposing ends, each anchor rod is connected to a temporary locking anchor seat and a booster anchor seat, respectively, via an anchor joint. This adjustable locking head design allows the length of the anchor rods to be adjusted according to actual needs, adapting to different construction environments and conditions. The use of anchor joints effectively enhances the connection strength between the anchor component and the anchor seat, ensuring safety during construction. The two anchor rod design also facilitates installation and disassembly, reducing the complexity and time consumption of on-site construction.

[0013] Optionally, four sets of temporary locking anchors are provided, distributed around the perimeter of the upper bearing platform, with the two sets of temporary locking anchors on opposite sides of the upper bearing platform arranged in a spatially staggered scissor-like pattern. This four-set anchor design ensures uniform support for the upper bearing platform in all four directions, improving the overall structural safety. The staggered scissor-like arrangement enhances the structure's lateral force resistance, effectively resisting lateral forces that may occur during rotation. Furthermore, the rational layout of the anchors provides greater stability during construction, reduces construction risks, and ensures the safety of construction personnel.

[0014] Optionally, the upper bearing platform is provided with four upper temporary locking anchors on opposite sides of the upper bearing platform, which are connected to the upper ends of the four sets of temporary locking anchor components; the lower bearing platform is provided with four auxiliary external anchors on opposite sides of the upper bearing platform, which are connected to the lower ends of the four sets of temporary locking anchor components. In this way, the anchor design of the upper and lower bearing platforms, and their connection with the temporary locking anchor components, form a stable support system. By setting anchors on opposite corners and sides, the stress is evenly distributed across the structure, reducing the risk of excessive local stress and improving overall safety.

[0015] This invention also includes the following steps based on the above-mentioned construction method for steel structure composite bearings for bridge horizontal rotation:

[0016] S1. Release the temporary anchoring vertical bars between the lower and upper foundations;

[0017] S2. Before the bridge rotates, a set of boosting reaction seats is installed at least four positions on the lower abutment, and four upper temporary locking anchors connected to the upper ends of four sets of temporary locking anchor components are provided on the upper abutment and on a pair of opposite sides of it. Four boosting outer anchors connected to the lower ends of four sets of temporary locking anchor components are provided on a pair of opposite sides of the lower abutment and on a pair of opposite sides of the upper abutment.

[0018] S3. During the bridge rotation, the booster jack is used to assist the rotation of the turntable of the upper bearing platform under the booster reaction seat, and the upper bearing platform is rotated to the reserved fine adjustment angle.

[0019] S4. Install four sets of temporary locking anchor components to temporarily anchor the lower and upper bearing platforms.

[0020] S5. Remove the four sets of temporary locking anchor components and rotate the upper bearing platform to the design position;

[0021] S6. After the bridge rotation is completed, remove all the booster reaction seats and the booster outer anchor and upper temporary locking anchor used to connect the temporary locking anchor components, and carry out the binding and pouring of the upper and lower vertical and horizontal steel bars between the lower and upper abutments.

[0022] Preferably, in step S5, at least two sets of push reaction seats are equipped with push beams with plugged steel plates for anti-over-rotation limit, and the steel plates are pulled out while the rotation is being performed during fine-tuning.

[0023] Preferably, in step S3, if the upper bearing platform rotates too much, a counter-pushing beam with a plug-filled steel plate is installed to rotate it in the opposite direction to the reserved fine-tuning angle.

[0024] The beneficial effects of this invention are:

[0025] 1. The steel structure combined bearing for bridge horizontal rotation of the present invention has the advantages of moderate volume, small structural size, stable structure, convenient installation and dismantling, and flexible construction with little interference. This new type of reaction bearing can not only solve the space limitation problem in the existing design, but also be convenient to disassemble and reuse after construction, and can be used multiple times with one investment, thereby reducing construction costs and resource waste, and contributing to the development of future bridge construction technology.

[0026] 2. The steel structure composite bearing for bridge horizontal rotation of the present invention adopts bidirectional locking to avoid unidirectional pulling of the rotation mechanism. That is, side A is locked clockwise and side B is locked counterclockwise, forming a scissor-and-fork staggered model through bidirectional tension. Specifically, in this scissor-and-fork staggered model, the AⅠ\BI and AⅢ\BⅢ ends relative to the upper abutment are temporarily anchored to the upper temporary locking anchor, while the AⅡ\BⅣ and AⅣ\BⅡ ends are temporarily anchored to the outer booster anchor. The outer booster anchor at the AⅡ / AⅣ position also serves as an anchor for cooperating with the push beam with the filler steel plate to prevent over-rotation limit and for connecting with the temporary locking anchor member.

[0027] Other advantages, objectives, and features of the invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination, or may be learned from practice of the invention. The objectives and other advantages of the invention can be realized and obtained through the following description. Attached Figure Description

[0028] To make the objectives, technical solutions, and advantages of the present invention clearer, the preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, wherein:

[0029] Figure 1 This is a front view of the steel structure composite support for bridge horizontal rotation according to the present invention.

[0030] Figure 2 for Figure 1 A top-down view;

[0031] Figure 3 for Figure 1 A schematic diagram of the external anchorage for the booster, where: a is a top view, b is a front view, and c is a side view;

[0032] Figure 4 for Figure 1 A schematic diagram of the inner anchor of the booster, where: a is a top view, b is a front view, and c is a side view;

[0033] Figure 5 for Figure 1 The diagram shows the upper temporary locking anchor, where: a is the top view, b is the front view, and c is the side view;

[0034] Figure 6 for Figure 1 A schematic diagram of the temporary locking anchor component, where: a is the front view and b is the top view;

[0035] Figures 7-12 This is a schematic diagram of the construction process of the steel structure composite support for bridge horizontal rotation according to the present invention;

[0036] Reference numerals: 1-Push-up outer anchor; 2-Push-up inner anchor; 3-Upper temporary locking anchor; 4-Temporary locking anchor member; 5-Reverse push beam with plugged steel plate; 6-Temporary anchoring vertical bar; 7-Lower foundation; 8-Upper foundation; 9-Support leg; 11-Corner base; 12-Mounting hole; 13-Rib plate; 14-Reinforcing plate; 15-Embedded anchor bolt; 16-Wedge block; 41-Anchor joint; 42-Anchor rod; 43-Adjustable lock head; A and B are the opposite sides relative to the upper foundation; I, II, III, and IV are the four corner positions relative to the upper foundation in a clockwise direction. Detailed Implementation

[0037] The present invention will be further described below with reference to specific embodiments. The accompanying drawings are for illustrative purposes only, representing schematic diagrams rather than actual physical objects, and should not be construed as limiting the scope of this patent. To better illustrate the embodiments of the present invention, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0038] like Figure 1-6 As shown, the steel structure composite support for bridge rotation mentioned in this invention includes: a boosting reaction seat, which is detachably connected to the lower abutment 7 and consists of an outer boosting anchor 1 and an inner boosting anchor 2; the design of the outer boosting anchor 1 and the inner boosting anchor 2 allows them to be arranged relative to the inner and outer sides of the support leg 9, thereby providing necessary reaction force support during bridge rotation and ensuring the stability of the rotation process. An upper temporary locking anchor 3, which is detachably connected to the upper abutment 8, is designed to provide temporary connection and fixation for bridge rotation. Its design allows for effective restriction of movement when the bridge rotation is paused according to construction needs during the rotation process, ensuring the accuracy and safety of the entire construction process. A temporary locking anchor member 4, which is detachably connected between a set of opposing upper temporary locking anchors 4 and the outer boosting anchor 1, can temporarily enhance the stability of the upper abutment 8 relative to the lower abutment 7 during rotation, preventing unnecessary displacement or tilting during the rotation process. Through the above design, the steel structure composite support for bridge rotation of the present invention will effectively improve the efficiency and safety of bridge rotation construction, and provide an innovative solution for modern bridge construction.

[0039] Specifically, the outer booster anchor 1, the inner booster anchor 2, and the upper temporary locking anchor 3 are all composed of an angle base 11 and reinforcing plates 13. At least one reinforcing plate 13 is provided and arranged inside the angle base 11 to enhance the overall stability and load-bearing capacity of the structure. The angle base 11 is the main load-bearing structure and has mounting holes 12 for connecting with pre-embedded anchor bolts 15. Through these mounting holes 12, the angle base 11 can be firmly connected to the pre-embedded anchor bolts 15 located on the upper bearing platform 8 or the lower bearing platform 7, ensuring stable fixation during the installation of the angle base. Furthermore, the reinforcing plates 13 of both the outer booster anchor 1 and the upper temporary locking anchor 3 have pin holes for connecting with temporary locking anchor members 4. These pin holes allow the temporary locking anchor members to be easily and firmly connected to the anchors, thereby enhancing the overall structural stability. Reinforcing plates 14 are added to the pin holes of the reinforcing plates 13. The reinforcing plate 14 increases the strength of the area around the pin hole, preventing local deformation or damage caused by stress concentration during load-bearing. This design significantly improves the durability and load-bearing capacity of the anchorage, ensuring that the connection can withstand greater reaction and tensile forces during bridge rotation construction. The temporary locking anchor member 4 consists of an anchor joint 41, an anchor rod 42, and an adjustable lock head 43. Its design purpose is to provide temporary fixing and locking functions during bridge rotation construction. Two anchor rods 42 are provided, and the two anchor rods 42 are connected at their opposite ends by the adjustable lock head 43. This design allows for adjustment of the length of the anchor rods 42, ensuring flexibility in different construction stages. The two anchor rods 42 are connected to the temporary locking anchorage 3 and the booster outer anchorage 1 respectively at their opposite ends by an anchor joint 41. This connection method ensures a firm connection between the anchor member and the anchorage, improving the stability of the entire support system.

[0040] In this embodiment, a wedge-shaped block 16 is connected to the outer anchor 1 to stop the push beam 5 with the steel plate filling. Its main function is to stop the push beam 5 with the steel plate filling. To achieve the best working effect, the wedge-shaped block 16 is processed in advance and precisely adjusted according to specific construction requirements. By adjusting the structural angle, the wedge-shaped block can adapt to different construction environments and needs, thus achieving flexible application. In this way, during bridge rotation construction, when reverse jacking is required, the wedge-shaped block is welded to the reaction seat of the outer jack. The wedge-shaped block can effectively provide the required reaction force support, ensuring the stability of the push beam. It not only ensures the firmness of the connection, but also allows for rapid response in actual construction, reducing construction time.

[0041] In this embodiment, four sets of temporary locking anchor members 4 are arranged around the upper abutment 8. This layout ensures that the bridge receives sufficient support and stability in all four directions during the rotation construction process. Furthermore, the two sets of temporary locking anchor members 4 on any pair of opposite sides of the upper abutment 8 are arranged in a spatially staggered scissor-like configuration. This design increases the structure's lateral force resistance and improves the overall stiffness and stability of the support system. The staggered arrangement allows forces from different directions on opposite sides to be effectively transmitted through the staggered configuration of the anchor members, thereby reducing stress concentration and deformation that may occur during the rotation process. The upper abutment 8 also has four upper temporary locking anchor seats 3 connected to the upper ends of the four sets of temporary locking anchor members 4 on opposite sides of its two diagonal sides; the lower abutment 7 has four auxiliary external anchor seats 1 connected to the lower ends of the four sets of temporary locking anchor members 4 on opposite sides of the upper abutment 8. Simultaneously, to avoid unidirectional pulling of the rotation mechanism, bidirectional locking is adopted, i.e., side A is locked clockwise, and side B is locked counterclockwise, forming a scissor-like staggered model through bidirectional tension. That is, in this scissor lift staggered model, the temporary anchors at the AⅠ\BⅠ and AⅢ\BⅢ ends relative to the upper bearing platform are temporarily anchored at the upper temporary locking anchor, while the temporary anchors at the AⅡ\BⅣ and AⅣ\BⅡ ends are temporarily anchored at the booster outer anchor. The booster outer anchor at the AⅡ / AⅣ position also serves as an anchor for cooperating with the push beam with plugged steel plate to prevent over-rotation limit and for connecting with the temporary locking anchor component.

[0042] like Figure 7-12 As shown, the construction method of the steel structure composite bearing for the horizontal rotation of this bridge is described in detail, including the following steps:

[0043] S1. Release the temporary anchoring vertical bar 6 between the lower bearing platform 7 and the upper bearing platform 8; the temporary anchoring vertical bar 6 can be quickly locked and released from the rotating structure before and after the rotation.

[0044] S2. Before the bridge rotation, a set of boosting reaction seats are installed at the four positions of the lower abutment 7, and four upper temporary locking anchor seats 3 are provided on the upper abutment 8 on opposite sides of a pair of diagonal sides, which are connected to the upper ends of the four sets of temporary locking anchor components 4. Four boosting outer anchor seats 1 are provided on the lower abutment 7 on opposite sides of the upper abutment 8, which are connected to the lower ends of the four sets of temporary locking anchor components 4. The installation of these components provides the necessary reaction support and temporary connection fixation for the subsequent bridge rotation, thereby improving construction safety.

[0045] S3. During the bridge rotation, the turntable of the upper bearing platform 8 is rotated under the booster reaction seat using booster jacks, and the upper bearing platform 8 is rotated to the reserved fine adjustment angle. If the upper bearing platform 8 rotates too much, the counter-push beam 5 with plugged steel plate is installed to rotate it in the opposite direction to the reserved fine adjustment angle. This ensures that the upper bearing platform 8 is stably controlled during the rotation process and can be adjusted to the predetermined angle in a timely manner.

[0046] S4. Install four sets of temporary locking anchor components 4 to temporarily anchor the lower bearing platform 7 and the upper bearing platform 8; through temporary anchoring, the structural stability is further enhanced to ensure that no displacement occurs in subsequent operations.

[0047] S5. Remove the four sets of temporary locking anchor components 4 and rotate the upper bearing platform 8 to the design position. During this process, install the counter-thrust beam 5 with plugged steel plate on at least two sets of booster reaction seats to prevent over-rotation and limit the rotation. During the fine adjustment, pull out the steel plate while rotating. Ensure that the upper bearing platform 8 reaches the design position during the fine adjustment process, and avoid over-rotation to ensure accuracy.

[0048] S6. After the bridge rotation is completed, remove all the booster reaction seats and the booster outer anchor 1 and upper temporary locking anchor 3 used to connect the temporary locking anchor member 4, and carry out the binding and pouring of the upper and lower vertical and horizontal steel bars between the lower abutment 7 and the upper abutment 8 to ensure the integrity and load-bearing capacity of the bridge structure.

[0049] Through the above construction steps, the construction method of the steel structure composite bearing for bridge rotation, with its reasonable design and innovative structural layout, significantly improves the safety, efficiency, and economy of bridge rotation construction. Each step is meticulously designed to meet the needs of modern bridge rotation construction, enhancing construction efficiency and ensuring construction quality.

[0050] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A steel structure composite bearing for bridge horizontal rotation, characterized in that, include: The booster reaction seat is detachably connected to the lower bearing platform (7) and consists of the booster outer anchor (1) and the booster inner anchor (2), which are arranged on the inner and outer sides relative to the support foot (9); the upper temporary locking anchor (3) is detachably connected to the upper bearing platform (8); the temporary locking anchor member (4) is detachably connected between a set of opposite upper temporary locking anchors (3) and the booster outer anchor (1); The temporary locking anchor members (4) are configured in four sets, which are respectively arranged around the upper support platform (8), and the two sets of temporary locking anchor members (4) relative to any pair of opposite sides of the upper support platform (8) are arranged in a spatial scissor-like staggered arrangement; the upper support platform (8) is provided with four upper temporary locking anchor seats (3) connected to the upper ends of the four sets of temporary locking anchor members (4) on its opposite sides; the lower support platform (7) is provided with four booster outer anchor seats (1) connected to the lower ends of the four sets of temporary locking anchor members (4) on its opposite sides of the upper support platform (8).

2. The steel structure composite support for bridge horizontal rotation according to claim 1, characterized in that, The outer booster anchor (1), the inner booster anchor (2), and the upper temporary locking anchor (3) are all composed of an angle base (11) and a rib plate (13). The rib plate (13) is set to at least one piece and is arranged inside the angle base (11). The angle base (11) is provided with mounting holes (12) for connecting with the pre-embedded anchor bolts (15). The pre-embedded anchor bolts (15) are set on the upper bearing platform (8) and the lower bearing platform (7).

3. The steel structure composite support for bridge horizontal rotation according to claim 2, characterized in that, The outer anchor (1) and the upper temporary locking anchor (3) each have a pin hole on their respective rib plate (13) for connecting with the temporary locking anchor member (4), and the rib plate (13) has a reinforcing plate (14) added at the pin hole.

4. The steel structure composite bearing for bridge horizontal rotation according to any one of claims 1-3, characterized in that, The outer anchor (1) of the booster is connected to a wedge block (16) for resisting the push beam (5) with the steel plate filling.

5. The steel structure composite support for bridge horizontal rotation according to claim 4, characterized in that, The temporary locking anchor member (4) consists of an anchor joint (41), an anchor rod (42), and an adjustable lock head (43). The anchor rod (42) is configured as two rods, and the two anchor rods (42) are connected at their corresponding ends by the adjustable lock head (43). The two anchor rods (42) are connected at their opposite ends to the upper temporary locking anchor seat (3) and the booster outer anchor seat (1) respectively by an anchor joint (41).

6. A construction method for a steel composite bearing for bridge horizontal rotation as described in any one of claims 1-5, characterized in that, Includes the following steps: S1. Release the temporary anchoring vertical bars (6) between the lower bearing plate (7) and the upper bearing plate (8). S2. Before the bridge rotates, a set of boosting reaction seats is installed at least four positions on the lower abutment (7), and four upper temporary locking anchors (3) are provided on the upper abutment (8) and on opposite sides of it, which are connected to the upper ends of four sets of temporary locking anchor components (4). Four boosting outer anchors (1) are provided on opposite sides of the lower abutment (7) and on opposite sides of the upper abutment (8), which are connected to the lower ends of four sets of temporary locking anchor components (4). S3. During the bridge rotation, the booster jack is used to assist the turntable of the upper bearing platform (8) to rotate under the booster reaction seat, and the upper bearing platform (8) rotates to the reserved fine adjustment angle. S4. Install four sets of temporary locking anchor components (4) to temporarily anchor the lower bearing platform (7) and the upper bearing platform (8). S5. Remove the four sets of temporary locking anchor components (4) and rotate the upper bearing platform (8) to the design position; S6. After the bridge rotation is completed, remove all the boosting reaction seats and the boosting outer anchor (1) and upper temporary locking anchor (3) used to connect the temporary locking anchor member (4), and carry out the binding and pouring of the upper and lower vertical and horizontal steel bars between the lower abutment (7) and the upper abutment (8).

7. The construction method according to claim 6, characterized in that, In step S5, at least two sets of push reaction seats are equipped with push beams (5) with plugged steel plates to prevent over-rotation limit, and the steel plates are pulled out while rotating during fine adjustment.

8. The construction method according to claim 7, characterized in that, In step S3, if the upper support platform (8) rotates too much, the push beam (5) with plugged steel plate is installed to rotate in the opposite direction to the reserved fine adjustment angle.

Images