Pier top blind area end beam swinging and shifting construction method

Abstract

The invention discloses a pier top blind area end beam swinging and shifting construction method which comprises the following steps: S1, constructing a bracket on the side wall of a cable bent tower, and meanwhile, mounting a temporary sling on the cable bent tower; s2, the connecting steel bridge is hoisted through a cable crane, and the connecting steel bridge is connected with the cable through a suspender; s3, the end beam steel bridge is hoisted through a cable crane and a temporary sling, so that the bottom of the end beam steel bridge abuts against the bracket, and the end beam steel bridge is located at an avoiding station; s4, the connection between the cable crane and the end beam steel bridge is released, and the end beam steel bridge is temporarily limited through the temporary sling and the bracket; s5, the closure steel bridge is hoisted through the cable crane, the closure steel bridge is connected with the connecting steel bridge, and then the closure steel bridge is connected with the cable through the suspender; s6, the cable crane is connected with the end beam steel bridge, and the cable crane is matched with the temporary sling, so that the end beam steel bridge is moved to a connecting station; and S7, the end beam steel bridge is connected with the closure steel bridge, the end beam steel bridge is connected with the bracket through the connecting support, and construction of the end beam steel bridge is completed.

Description

Technical Field

[0001] The present application relates to the technical field of suspension bridge construction, and in particular to a construction method for swinging end beams in a blind area on a pier top. Background Art

[0002] A suspension bridge, also known as a suspension bridge, refers to a bridge with cables suspended from towers and anchored on both sides as the main load-bearing components of the upper structure. The geometric shape of the cables is determined by the balance of forces and is generally close to a parabola. Many hangers are hung from the cables to suspend the bridge deck. Stiffening beams are often set between the bridge deck and the hangers to form a combined system with the cables to reduce the deflection caused by the load.

[0003] The deck of a suspension bridge is generally supported by the cross braces of the cable towers, that is, the steel frame of the bridge deck is directly located on the cross braces of the cable towers. However, when constructing in mountainous areas, especially a suspension bridge located between two tunnels, it is necessary to consider the height of the tunnel pavement on the one hand, and the overall size ratio of the cable tower on the other hand. This results in a mismatch between the cross braces of the cable tower and the height of the bridge deck, and interference between the steel frame under the bridge deck and the cross braces of the cable tower. The conventional jacking method cannot adapt to this situation. Summary of the invention

[0004] The purpose of this application is to provide a construction method for swinging the end beam in the blind area of ​​the pier top, so as to improve the problem that the conventional jacking method cannot be applied due to the interference between the steel frame under the bridge deck and the cable tower cross brace.

[0005] This application provides a construction method for swinging and moving the end beam in the blind area of ​​the pier top, which adopts the following technical solution: A construction method for swinging end beams in a blind area of ​​a pier top comprises the following steps: S1. Construct the corbels on the side walls of the cable tower and install temporary slings on the cable tower; S2, hoist the connecting steel bridge by cable crane, and connect the connecting steel bridge to the cable by suspending rod; S3. Use cable cranes and temporary slings to hoist the end beam steel bridge so that the bottom of the end beam steel bridge is against the corbels and the end beam steel bridge is in an avoidance position; S4. Release the connection between the cable hanger and the end beam steel bridge, and temporarily limit the end beam steel bridge by temporary slings and brackets; S5, hoisting the closing steel bridge by cable crane, and connecting the closing steel bridge with the connecting steel bridge, and then connecting the closing steel bridge with the cable by hanging rod; S6. Connect the cable crane to the end beam steel bridge, and move the end beam steel bridge to the connection position by cooperating with the cable crane and the temporary sling; S7. Connect the end beam steel bridge with the closing steel bridge, connect the end beam steel bridge with the corbel through the connecting support, and complete the construction of the end beam steel bridge.

[0006] By adopting the above technical scheme, during construction, the end beam steel bridge is supported by the corbels, and the end beam steel bridge is suspended by temporary slings, so that the end beam steel bridge can be stabilized at the avoidance position, and then the closing steel bridge is connected with the connecting steel bridge. After the closing steel bridge is installed reliably, the cable crane is used in conjunction with the temporary slings to move the end beam steel bridge to the connecting position and connect it with the closing steel bridge. The construction of the end beam steel bridge is achieved only by adding temporary slings, which is simple, convenient and low-cost. The traditional jacking method requires the installation of temporary supports and slides, etc., but due to the presence of corbels and cross braces, the space is narrow and it is difficult to install. Forced installation is costly and has greater safety hazards.

[0007] Optionally, in step S6, the cable crane is located above the closing steel bridge, and by reeling in the slings of the cable crane and simultaneously releasing the slings of the temporary slings, the end beam steel bridge moves toward the closing steel bridge until the end beam steel bridge moves to the connection position.

[0008] By adopting the above technical solution, the short-distance sliding of the end beam steel bridge can be achieved through the cooperation of cable cranes and temporary slings, and the movement of the end beam steel bridge can be completed at a very low cost under limited space.

[0009] Optionally, the end beam steel bridge includes a top plate, side plates and a bottom plate connected in sequence, the side plates are used to be connected to the closed steel bridge, the bottom plate is used to contact the top surface of the corbel, and the top plate and the bottom plate are located on both sides of the cross brace of the cable tower in the vertical direction.

[0010] By adopting the above technical scheme, the top plate and the bottom plate are arranged on both sides of the cross brace, and at the same time the bottom plate is in contact with the top surface of the corbel, so that the pressure on the top plate is transmitted from the bottom plate to the corbel, that is, the corbel is the main load-bearing component. Compared with using the cross brace as the main load-bearing component to support the top plate, it is not easy to cause deformation of the top plate, and the overall strength of the end beam steel bridge is higher, and the stability and safety are better.

[0011] Optionally, the connecting support includes an upper support and a lower support, the upper support is connected to the end beam steel bridge, the lower support is connected to the corbel, and the upper support is connected to the lower support.

[0012] By adopting the above technical solution, the upper support cooperates with the lower support to achieve support for the end beam steel bridge.

[0013] Optionally, a ball is provided on the bottom surface of the upper support, and a rolling groove is provided on the top surface of the lower support, and the ball is matched with the rolling groove.

[0014] By adopting the above technical solution, the ball and the rolling groove cooperate to facilitate the alignment between the upper support and the lower support.

[0015] Optionally, when the end beam steel bridge is in the avoidance position, the upper support is connected to the end beam steel bridge, and the ball is in contact with the top surface of the corbel; when the end beam steel bridge is in the connection position, the lower support is located below the upper support, and the ball is located in the rolling groove.

[0016] By adopting the above technical scheme, when the end beam steel bridge moves, the ball can contact the top surface of the corbel when necessary, which is convenient for reducing the friction between the end beam steel bridge and the corbel, and is more conducive to the sliding of the end beam steel bridge. At the same time, when the upper support and the lower support are closed, the ball and the rolling groove are convenient for positioning, thereby improving the installation accuracy of the upper support and the lower support.

[0017] Optionally, in step S6, when the end beam steel bridge moves toward the closing steel bridge, the end beam steel bridge is first hoisted to a level higher than the closing steel bridge. At this time, the lower support is installed on the corbel, and then the end beam steel bridge is lowered so that the balls fall into the corresponding rolling grooves. At the same time, the end beam steel bridge is aligned with the closing steel bridge so that the end beam steel bridge is in the connection position. At this time, the connection between the temporary sling and the end beam steel bridge is released.

[0018] By adopting the above technical solution, through the cooperation of the upper support, the lower support, the ball and the rolling groove, it is easy to achieve effective support for the end beam steel bridge, and then the temporary sling can be released.

[0019] Optionally, a first connecting cavity is provided in the upper support, and a second connecting cavity is provided in the lower support. After the ball falls into the rolling groove, the first connecting cavity is connected to the second connecting cavity.

[0020] By adopting the above technical solution, the first connecting cavity and the second connecting cavity can be easily grouted after being aligned, so that a reliable connection is formed between the upper support and the lower support, thereby ensuring effective support for the end beam steel bridge.

[0021] Optionally, after the ball falls into the rolling groove, the first connecting cavity and the second connecting cavity are grouted, and then a transverse wind-resistant support is installed on the corbel, and the transverse wind-resistant support is connected to the upper support and the lower support.

[0022] Optionally, the upper support is connected to the end beam steel bridge by bolts.

[0023] In summary, the present application includes at least one of the following beneficial technical effects: 1. During construction, the end beam steel bridge is supported by the corbels, and the end beam steel bridge is suspended by temporary slings, so that the end beam steel bridge can be stabilized at the avoidance position. Then, the closing steel bridge is connected to the connecting steel bridge. After the closing steel bridge is installed reliably, the end beam steel bridge is moved to the connecting position and connected to the closing steel bridge by using cable cranes and temporary slings. The construction of the end beam steel bridge is realized only by adding temporary slings. It is simple, convenient and low-cost, overcoming the problems of the traditional jacking method that the space is narrow and difficult to install due to the presence of corbels and cross braces, and the forced installation is costly and has great safety hazards; 2. Through the cooperation of cable crane and temporary sling, the short-distance sliding of the end beam steel bridge is realized, and the movement of the end beam steel bridge is completed at a very low cost under the condition of limited space; 3. When the end beam steel bridge moves, the ball can contact the top surface of the corbel when necessary, which is convenient for reducing the friction between the end beam steel bridge and the corbel, and is more conducive to the sliding of the end beam steel bridge. At the same time, when the upper support and the lower support are closed, the ball and the rolling groove are convenient for positioning, thereby improving the installation accuracy of the upper support and the lower support. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the process of embodying a construction method for swinging end beams in a blind area of ​​a pier top in the present invention.

[0025] Figure 2 It is a side view schematic diagram of the tower and the cable in the present invention.

[0026] Figure 3 It is a three-dimensional schematic diagram of a tower and a cable in the present invention.

[0027] Figure 4 It is a side view cutaway schematic diagram of the upper support and the lower support in the present invention.

[0028] In the figure, 1. cable tower; 11. cross brace; 2. corbel; 3. cable; 31. cable hanger; 32. hanger rod; 4. temporary sling; 5. connecting steel bridge; 6. closing steel bridge; 7. end beam steel bridge; 71. top plate; 72. side plate; 73. bottom plate; 8. upper support; 81. ball; 82. first connecting cavity; 9. lower support; 91. rolling groove; 92. second connecting cavity. DETAILED DESCRIPTION

[0029] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0030] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more. In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be a connection between the two elements. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] Embodiment 1 A construction method for swinging the end beam in the blind area of ​​the pier top, referring to Figures 1 to 4 , including the following steps: S1, constructing the corbel 2 on the side wall of the cable tower 1, and installing the temporary sling 4 on the cable tower 1; S1. Construct corbels 2 on the two inner walls of the cable tower 1. The corbels 2 are lower than the cross braces 11 of the cable tower 1. At the same time, install temporary slings 4 on the cable tower 1. The temporary slings 4 are higher than the cross braces 11 of the cable tower 1.

[0032] S2. The connecting steel bridge 5 is hoisted by the cable 3. The connecting steel bridge 5 has multiple sections. Generally, the connecting steel bridge 5 at the lowest position of the cable 3 is hoisted first, which is generally the middle position between two adjacent cable towers 1. The multiple sections of the connecting steel bridge 5 are connected in sequence, and the connection can be a combination of high-strength bolts and welding. The connecting steel bridge 5 and the cable 3 are connected by a suspender 32 to improve the stability of the connecting steel bridge 5.

[0033] S3. Hoist the end beam steel bridge 7 by means of the cable 3 and the temporary sling 4, so that the bottom of the end beam steel bridge 7 is against the corbel 2, and the end beam steel bridge 7 is in the avoidance position. During hoisting, the end beam steel bridge 7 is first hoisted by means of the cable 3 to a position higher than the corbel 2, and at this time, the temporary sling 4 is connected to the end beam steel bridge 7. The temporary sling 4 is installed at the end of the cable tower 1 away from the connecting steel bridge 5, so that the temporary sling 4 can pull the end beam steel bridge 7 in the direction away from the connecting steel bridge 5, and put the end beam steel bridge 7 in the avoidance position. When the end beam steel bridge 7 is in the avoidance position, space can be left for the hoisting and construction of the closing steel bridge 6, so that the closing steel bridge 6 can be constructed.

[0034] The end beam steel bridge 7 includes a top plate 71, a side plate 72 and a bottom plate 73 connected in sequence, the side plate 72 is used to connect with the folding steel bridge 6, the bottom plate 73 is used to contact with the top surface of the corbel 2, and the top plate 71 and the bottom plate 73 are located on both sides of the cross brace 11 of the cable tower 1 in the vertical direction. The top plate 71 and the bottom plate 73 are arranged on both sides of the cross brace 11 in the vertical direction, and the bottom plate 73 is in contact with the top surface of the corbel 2, so that the pressure on the top plate 71 is transmitted from the bottom plate 73 to the corbel 2, that is, the corbel 2 is the main load-bearing component. Compared with using the cross brace 11 as the main load-bearing component to support the top plate 71, it is not easy to cause the top plate 71 to deform, and the overall strength of the end beam steel bridge 7 is higher, and the stability and safety are better.

[0035] A connecting support is provided between the end beam steel bridge 7 and the corbel 2, and the connecting support includes an upper support 8 and a lower support 9. The upper support 8 is connected to the bottom plate 73 of the end beam steel bridge 7, and the lower support 9 is connected to the corbel 2. The upper support 8 is connected to the lower support 9. The upper support 8 cooperates with the lower support 9 to facilitate the support of the end beam steel bridge 7. The bottom surface of the upper support 8 is rotatably connected with a ball 81, and the top surface of the lower support 9 is provided with a rolling groove 91, and the ball 81 is adapted to the rolling groove 91. The ball 81 cooperates with the rolling groove 91 to facilitate the alignment between the upper support 8 and the lower support 9.

[0036] Before hoisting the end beam steel bridge 7, the upper support 8 is first connected to the bottom plate 73 of the end beam steel bridge 7 by high-strength bolts. When the end beam steel bridge 7 is in the avoidance position, the ball 81 contacts the top surface of the corbel 2.

[0037] S4, release the connection between the cable 3 and the end beam steel bridge 7, and temporarily limit the end beam steel bridge 7 through the temporary sling 4 and the corbel 2, so that the end beam steel bridge 7 is kept in the avoidance position.

[0038] S5, hoist the closing steel bridge 6 through the cable 3, and connect the closing steel bridge 6 with the connecting steel bridge 5, and then connect the closing steel bridge 6 with the cable 3 through the suspension rod 32.

[0039] S6. Then release the connection between the cable 3 and the closing steel bridge 6, and connect the cable 3 to the end beam steel bridge 7. The cable 3 cooperates with the temporary sling 4 to move the end beam steel bridge 7 to the connection position. After the cable 3 is released from the closing steel bridge 6, the cable 3 is located above the closing steel bridge 6. At this time, the sling of the cable 3 is wound up, and the sling of the temporary sling 4 is released, so that the end beam steel bridge 7 moves toward the closing steel bridge 6 until the end beam steel bridge 7 moves to the connection position. Through the cooperation of the cable 3 and the temporary sling 4, the short-distance sliding of the end beam steel bridge 7 is achieved, and the movement of the end beam steel bridge 7 is completed at a very low cost under limited space.

[0040] Specifically, when the end beam steel bridge 7 moves toward the closing steel bridge 6, the end beam steel bridge 7 is first hoisted to a level higher than the closing steel bridge 6. At this time, the lower support 9 is installed on the corbel 2, and then the end beam steel bridge 7 is lowered so that the ball 81 falls into the corresponding rolling groove 91. At the same time, the end beam steel bridge 7 is aligned with the closing steel bridge 6 so that the end beam steel bridge 7 is in the connection position. At this time, the connection between the temporary sling 4 and the end beam steel bridge 7 is released.

[0041] When the end beam steel bridge 7 is in the avoidance position, the upper support 8 is connected to the end beam steel bridge 7, and the ball 81 contacts the top surface of the corbel 2; when the end beam steel bridge 7 is in the connection position, the lower support 9 is located below the upper support 8, and the ball 81 is located in the rolling groove 91.

[0042] It should be noted that, when the end beam steel bridge 7 moves, the ball 81 theoretically will not contact the top surface of the corbel 2, but in actual construction, due to the problem of the control accuracy of the suspension rope, the ball 81 may contact the top surface of the corbel 2 during the swinging process, which is convenient for reducing the friction between the end beam steel bridge 7 and the corbel 2, and is more conducive to the sliding of the end beam steel bridge 7. When the upper support 8 and the lower support 9 are closed, the ball 81 and the rolling groove 91 are convenient for positioning, and the installation accuracy of the upper support 8 and the lower support 9 is improved.

[0043] S7, after the connection between the temporary sling 4 and the end beam steel bridge 7 is released, the end beam steel bridge 7 is connected to the closing steel bridge 6, and the end beam steel bridge 7 is connected to the corbel 2 through the connecting support, and the construction of the end beam steel bridge 7 is completed. A first connecting cavity 82 is provided in the upper support 8, and a second connecting cavity 92 is provided in the lower support 9. After the ball 81 falls into the rolling groove 91, the first connecting cavity 82 and the second connecting cavity 92 are connected. After the ball 81 falls into the rolling groove 91, the first connecting cavity 82 and the second connecting cavity 92 are grouted, and then a transverse wind-resistant support is installed on the corbel 2, and the transverse wind-resistant support is connected to the upper support 8 and the lower support 9. The first connecting cavity 82 and the second connecting cavity 92 are grouted after being aligned, so that a reliable connection is formed between the upper support 8 and the lower support 9, thereby ensuring effective support for the end beam steel bridge 7.

[0044] Working principle: During construction, the end beam steel bridge 7 is supported by the corbel 2, and the end beam steel bridge 7 is suspended by the temporary sling 4, so that the end beam steel bridge 7 can be stabilized at the avoidance position, and then the closing steel bridge 6 is first connected to the connecting steel bridge 5. After the closing steel bridge 6 is installed reliably, the cable 3 is used in conjunction with the temporary sling 4 to move the end beam steel bridge 7 to the connecting position and connect it with the closing steel bridge 6. The construction of the end beam steel bridge 7 can be realized only by adding the temporary sling 4, which is simple, convenient and low-cost.

[0045] During the construction of the traditional jacking method, the connecting steel bridge 5 and the closing steel bridge 6 are generally hoisted first. After the connecting steel bridge 5 and the closing steel bridge 6 are connected, the end beam steel bridge 7 is hoisted onto the cross brace 11, and then temporary supports and slideways are installed on the side walls of the cable sleeve. Then, the jacking device is installed, and the end beam steel bridge 7 is pushed out through the cooperation of the jacking device and the slideway, so that the end beam steel bridge 7 is aligned with the closing steel bridge 6 and connected; however, due to the interference between the height of the cross brace 11 and the end beam steel bridge 7, after the design uses the bracket 2 to support the end beam steel bridge 7, the existence of the bracket 2 and the cross brace 11 leads to a narrow space and it is difficult to install temporary supports and slideways, etc., and forced installation has high costs and greater safety hazards. However, the present application only uses the cooperation of the cable 3 and the temporary sling 4 to realize the movement of the end beam steel bridge 7 through the "swinging" method, thereby realizing the erection of the end beam steel bridge 7. The swinging movement is that the cable 3 is hoisted and wound while the temporary hoisting cable 4 is released, or the cable 3 is hoisted and released while the temporary hoisting cable 4 is wound, so that the end beam steel bridge 7 is moved while swinging in the air, which is called swinging movement.

[0046] The embodiments of this specific implementation are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. The same components are represented by the same figure marks. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A construction method for swinging end beams in blind areas of pier tops, characterized in that: The steps include: S1, constructing a corbel (2) on the side wall of the cable tower (1), and installing a temporary sling (4) on the cable tower (1); S2, hoisting the connecting steel bridge (5) by means of the cable (3), and connecting the connecting steel bridge (5) to the cable (3) by means of the suspension rod (32); S3, hoisting the end beam steel bridge (7) by means of cables (3) and temporary slings (4), so that the bottom of the end beam steel bridge (7) is against the corbel (2), and the end beam steel bridge (7) is placed in an avoidance position; S4, releasing the connection between the cable (3) and the end beam steel bridge (7), and temporarily limiting the end beam steel bridge (7) by using the temporary sling (4) and the bracket (2); S5, hoisting the closing steel bridge (6) by means of the cable (3), and connecting the closing steel bridge (6) with the connecting steel bridge (5), and then connecting the closing steel bridge (6) with the cable (3) by means of the suspension rod (32); S6, connecting the cable (3) to the end beam steel bridge (7), and moving the end beam steel bridge (7) to the connection position by cooperating the cable (3) with the temporary sling (4); S7, connecting the end beam steel bridge (7) with the closing steel bridge (6), connecting the end beam steel bridge (7) with the corbel (2) through the connecting support, and completing the construction of the end beam steel bridge (7).

2. A construction method for swinging end beams in blind areas of pier tops according to claim 1, characterized in that: In step S6, the cable (3) is suspended above the closing steel bridge (6), and the suspension rope of the cable (3) is wound up and the suspension rope of the temporary suspension rope (4) is released at the same time, so that the end beam steel bridge (7) moves toward the closing steel bridge (6) until the end beam steel bridge (7) moves to the connection position.

3. A construction method for swinging end beams in blind areas of pier tops according to claim 2, characterized in that: The end beam steel bridge (7) comprises a top plate (71), a side plate (72) and a bottom plate (73) which are connected in sequence, wherein the side plate (72) is used to be connected to the folding steel bridge (6), and the bottom plate (73) is used to be in contact with the top surface of the corbel (2), and the top plate (71) and the bottom plate (73) are located on both sides of the cross brace (11) of the cable tower (1) in the vertical direction.

4. A construction method for swinging end beams in blind areas of pier tops according to claim 2, characterized in that: The connecting support comprises an upper support (8) and a lower support (9), wherein the upper support (8) is connected to the end beam steel bridge (7), the lower support (9) is connected to the corbel (2), and the upper support (8) is connected to the lower support (9).

5. A construction method for swinging end beams in blind areas of pier tops according to claim 4, characterized in that: A ball bearing (81) is provided on the bottom surface of the upper support (8), and a rolling groove (91) is provided on the top surface of the lower support (9), and the ball bearing (81) is matched with the rolling groove (91).

6. A construction method for swinging end beams in blind areas of pier tops according to claim 5, characterized in that: When the end beam steel bridge (7) is in the avoidance position, the upper support (8) is connected to the end beam steel bridge (7), and the ball (81) is in contact with the top surface of the bracket (2); When the end beam steel bridge (7) is in the connection position, the lower support (9) is located below the upper support (8), and the ball (81) is located in the rolling groove (91).

7. A construction method for swinging end beams in blind areas of pier tops according to claim 6, characterized in that: In step S6, when the end beam steel bridge (7) moves toward the closing steel bridge (6), the end beam steel bridge (7) is first hoisted to a position higher than the closing steel bridge (6). At this time, the lower support (9) is installed on the corbel (2), and then the end beam steel bridge (7) is lowered so that the ball (81) falls into the corresponding rolling groove (91). At the same time, the end beam steel bridge (7) is aligned with the closing steel bridge (6) so that the end beam steel bridge (7) is in the connection position. At this time, the connection between the temporary sling (4) and the end beam steel bridge (7) is released.

8. A construction method for swinging end beams in blind areas of pier tops according to claim 7, characterized in that: The upper support (8) is provided with a first connecting cavity (82), and the lower support (9) is provided with a second connecting cavity (92). After the ball (81) falls into the rolling groove (91), the first connecting cavity (82) is connected to the second connecting cavity (92).

9. A construction method for swinging end beams in blind areas of pier tops according to claim 8, characterized in that: After the ball (81) falls into the rolling groove (91), the first connecting cavity (82) and the second connecting cavity (92) are grouted, and then a transverse wind-resistant support is installed on the corbel (2), and the transverse wind-resistant support is connected to the upper support (8) and the lower support (9).

10. A construction method for swinging and moving end beams in blind areas of pier tops according to claim 9, characterized in that: The upper support (8) is connected to the end beam steel bridge (7) by bolts.

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