Construction tooling and method for a cambered rib

Abstract

The application discloses a construction tool and a construction method of an outward-inclined arch rib. The construction tool comprises a bridge, a plurality of assembling supports, a swivel ball hinge, a horizontal rotation power system and a side rotation power system. The heights of the assembling supports are matched with the arch shapes of the first single arch and the second single arch. The swivel ball hinge is respectively installed at the arch foot of the first single arch and the arch foot of the second single arch. The horizontal rotation power system is used for driving the swivel ball hinge of the first single arch and the second single arch to horizontally rotate and transport to a predetermined position after the assembling of the first single arch and the second single arch is completed. The side rotation power system is used for driving the arch foot of the first single arch and the arch foot of the second single arch to side-rotate around the swivel ball hinge in a direction away from a bearing surface, so that the arch top of the first single arch and the arch top of the second single arch are lifted to a predetermined height position. The construction tool and the construction method of the application do not need to set up supports in water, the service cycle of a ship is short, and the construction efficiency is high.

Description

Technical Field

[0001] This invention generally relates to the field of bridge construction equipment technology, and specifically to a construction tool and method for an outward-sloping arch rib. Background Technology

[0002] In modern bridge design, arch bridges are widely used due to their aesthetically pleasing structure and clear load-bearing characteristics. There are numerous construction methods for arch bridges, commonly including the scaffolding assembly method, cable-stayed inclined suspension method, jacking method, rotation method, and overall lifting method. Different construction methods are suitable for different site conditions. Therefore, providing a construction method suitable for outward-sloping arch ribs in water is of great significance. Summary of the Invention

[0003] In view of the above-mentioned defects or deficiencies in the prior art, it is desirable to provide a construction tooling and construction method for an outward-sloping arch rib that does not require the erection of supports in the water, has a short service life of the ship, and has high construction efficiency.

[0004] In a first aspect, the present invention provides a construction fixture for an outwardly inclined arch rib, the arch rib comprising a first single-section arch and a second single-section arch, the construction fixture comprising: Approach bridges are used to provide space for assembling the first and second single arches; The assembly support includes multiple assembly supports, which are set perpendicular to the bearing surface of the approach bridge, and the height of the multiple assembly supports matches the arch shape of the first single arch and the second single arch. The rotating ball joints are installed at the arch feet of the first single arch and the arch feet of the second single arch respectively. Under the action of external force, the first single arch and the second single arch will rotate horizontally in the plane where the bearing surface is located and rotate laterally in the plane perpendicular to the bearing surface. The horizontal rotation power system is used to drive the first and second single-sub-arches to rotate horizontally and transport them to the predetermined position after the first and second single-sub-arches are assembled. The lateral rotation power system is used to drive the arch feet of the first single-sub-arch and the second single-sub-arch to rotate laterally around the spherical hinge in a direction away from the bearing surface, so as to raise the arch crowns of the first single-sub-arch and the second single-sub-arch to a predetermined height position.

[0005] As an optional solution, the horizontal rotation power system includes: The sliding system includes at least a sliding track, which is located on the bearing surface of the approach bridge and extends from the approach bridge toward the river on both sides. The transport vessel is used to move one end of the first and second single arches to the transport vessel after the first and second single arches are assembled. The transport vessel then drives the first and second single arches to rotate around the spherical hinge of the rotating body and transport them to the predetermined position.

[0006] As an optional solution, the side-turn power system includes: The rear anchor point is located on the bearing surface of the approach bridge; The traction system includes a slewing jack, steel strands, and slewing tie rods. The slewing jacks are installed on the bearing surface of the approach bridge. The slewing tie rods are connected to the first single-arch and the second single-arch respectively. The two ends of the steel strands are connected to the slewing tie rods and the rear anchor point respectively. The slewing jacks are connected to the steel strands to transmit power to the first single-arch, the second single-arch, and the rear anchor point through the steel strands. This causes the arch feet of the first and second single-archs to rotate laterally around the slewing ball joints in a direction away from the bearing surface, so that the arch crowns of the first and second single-archs are raised to a predetermined height.

[0007] As an optional solution, the construction fixtures also include a first temporary tie rod and a second temporary tie rod. The two ends of the first temporary tie rod are respectively connected between the two arch feet of the first single arch, and the two ends of the second temporary tie rod are respectively connected between the two arch feet of the second single arch, in order to balance the weight and achieve the lateral stability of the first and second single arches.

[0008] Secondly, the present invention provides a construction method for an outwardly inclined arch rib, using the construction tooling of the first aspect, and the construction method includes the following steps: The first single arch and the second single arch are assembled on the approach bridges on both sides of the river using assembly brackets. Rotating ball joints are installed at the arch feet of the first single arch and the second single arch respectively to obtain the assembled first single arch and the second single arch. A horizontal rotation power system is used to drive the first and second single-sub-arches to rotate to a predetermined position, and the free ends of the first and second single-sub-arches are connected to the rotating ball joint of the pre-embedded section of the arch foot on the other side. A lateral rotation power system is used to drive the arch feet of the first single-sub-arch and the second single-sub-arch to rotate laterally around the spherical hinge of the rotating body in a direction away from the bearing surface, so as to raise the arch crowns of the first single-sub-arch and the second single-sub-arch to a predetermined height position.

[0009] As an optional solution, the first and second single-section arches are assembled on the approach bridges on both sides of the river using assembly brackets. Rotating ball joints are then installed at the arch feet of the first and second single-section arches respectively, resulting in the assembled first and second single-section arches, including: Pre-embedded sections of arch feet are installed on the main pier arch seats on both sides of the river, and rotating ball hinges are installed on the pre-embedded sections of arch feet. On the approach bridge on one side of the river, the other segments of the first and second single arches are assembled using assembly brackets and connected to the pre-embedded sections at the arch feet to obtain the assembled first and second single arches.

[0010] As an optional solution, using a horizontal rotation power system to rotate the first and second single-auxiliary arches to a predetermined position includes: Install the swing support on the transport vessel and moor the transport vessel on both sides of the approach bridge; A sliding system is installed on the approach bridge to slide the first and second single arches onto the rotating support of the transport vessel. The transport vessel rotates the first and second single-sub-arches to their predetermined positions, so that the free ends of the first and second single-sub-arches are located at the pre-embedded section of the arch foot on the other side.

[0011] As an optional solution, a lateral rotation power system is used to drive the arch feet of the first and second single-aspect arches to rotate laterally around the spherical hinge of the rotating body in a direction away from the bearing surface, so as to raise the arch crowns of the first and second single-aspect arches to a predetermined height position, including: Rotation tie rods were installed on the first and second single-sub-arches respectively; Rear anchor points, jacks, and steel strands are installed on the approach bridges on both sides, so that the two ends of the steel strands are connected to the slewing tie rod and the rear anchor point respectively, and the slewing jacks are connected to the steel strands. Using jacks and steel strands, the arch feet of the first and second single-arch sections are rotated laterally around the spherical hinge of the rotating body in a direction away from the bearing surface, so that the arch crowns of the first and second single-arch sections are raised to a predetermined height.

[0012] As an optional approach, before using a horizontal rotation power system to rotate the first and second single-auxiliary arches to their predetermined positions, the construction method also includes: A first temporary tie rod is installed between the two arch feet of the first single-sub-arch, and a second temporary tie rod is installed between the two arch feet of the second single-sub-arch, to balance the weight and achieve lateral stability of the first and second single-sub-archs.

[0013] As an optional approach, after the crowns of the first and second single-auxiliary arches are raised to a predetermined height, the construction method also includes: The spherical hinges at the arch foot of the first and second single-sub-arches and the connection points of the arch rib segments were sealed off, and the horizontal rotation power system, the lateral rotation power system, the first temporary tie rod, and the second temporary tie rod were removed.

[0014] The construction fixtures and methods for outward-sloping arch ribs provided by this invention, through the setup of an approach bridge, assembly supports, rotating ball joints, a horizontal rotation power system, and a lateral rotation power system, allow for the transportation of arch rib segments to the approach bridge during actual construction. The arch ribs are then assembled into a whole using the assembly supports. A transport vessel is then used to horizontally rotate the first and second single-aspect arches to their designed bridge location positions. Finally, the first and second single-aspect arches are laterally rotated to appropriate heights. This invention fully utilizes the approach bridge as the arch rib assembly site, eliminating the need to rent space on both banks of the bridge. The self-weight of the approach bridge provides the lateral rotation power point. No supports need to be erected in the water during construction. The transport vessel has a short service life, and lateral rotation is easy. This construction method offers advantages such as simple operation, low investment, and fast installation speed, and is suitable for the installation of outward-sloping arch ribs in water. Attached Figure Description

[0015] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings: Figure 1 This application provides a construction diagram of the outward-sloping arch ribs (assembling the first and second single-section arches). Figure 2 for Figure 1 A top-down view; Figure 3 This application provides a construction diagram of the outward-sloping arch ribs of an embodiment (the first and second single-arch sections are slid onto the transport vessel). Figure 4 for Figure 3 A top-down view; Figure 5 The diagram provided in this application is a construction schematic of the outward-sloping arch ribs of an embodiment (after the first and second single-arch sections are rotated horizontally). Figure 6 for Figure 5 A top-down view; Figure 7 This application provides a construction diagram of the outward-sloping arch ribs (the first single-section arch and the second single-section arch rotated laterally). Figure 8 for Figure 7 A top-down view; Figure 9 This application provides a cross-sectional schematic diagram of the outwardly inclined arch rib after construction is completed according to an embodiment. Figure 10 for Figure 9 A top-down view.

[0016] In the picture, 1. Approach bridge; 2. Assembly support; 3. Rotating ball joint; 4. Slide track; 5. Transport vessel; 6. Rear anchor point; 7. Jack; 8. Steel strand; 9. Rotating tie rod; 10. First temporary tie rod; 11. Second temporary tie rod; 13. Arch foot embedded section. 20. Arch rib; 21. First single-section arch; 22. Second single-section arch; Detailed Implementation The present application will be further described in detail below with reference to embodiments. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the invention. It should be noted that, unless otherwise specified, the embodiments and features described herein can be combined with each other. The present application will now be described in detail with reference to embodiments.

[0017] Embodiments of this application provide a construction fixture for an outwardly inclined arch rib, such as... Figures 1-10 As shown, the arch rib 20 includes a first single-section arch 21 and a second single-section arch 22, and the construction fixtures include: Approach bridge 1 is used to provide a site for assembling the first single-sub-arch 21 and the second single-sub-arch 22; The assembly bracket 2 includes multiple assembly brackets 2, which are arranged perpendicular to the bearing surface of the approach bridge 1, and the height of the multiple assembly brackets 2 matches the arch shape of the first single arch 21 and the second single arch 22. The rotating ball joint 3 is installed at the arch feet of the first single arch 21 and the second single arch 22 respectively. Under the action of external force, the first single arch 21 and the second single arch 22 will rotate horizontally in the plane where the bearing surface is located and rotate laterally in the plane perpendicular to the bearing surface. The horizontal rotation power system is used to drive the first single-sub-arch 21 and the second single-sub-arch 22 to rotate horizontally and transport them to the predetermined position after the first single-sub-arch 21 and the second single-sub-arch 22 are assembled. The lateral rotation power system is used to drive the arch feet of the first single-sub-arch 21 and the arch feet of the second single-sub-arch 22 to rotate laterally around the rotating body ball joint 3 in a direction away from the bearing surface, so as to raise the arch crowns of the first single-sub-arch 21 and the second single-sub-arch 22 to a predetermined height position.

[0018] Among them, approach bridge 1 refers to the transitional structure in bridge engineering that connects the main bridge with the embankment or ground road on both sides. Its core function is to solve the problem of crossing the elevation difference and horizontal distance between the main bridge and the ground. In this embodiment, approach bridge 1 is mainly used to provide the assembly site for the first single arch 21 and the second single arch 22, without the need to rent additional shore site. In actual processing, each segment A1 of the arch rib is transported to the approach bridge 1 area, and an assembly support 2 is erected on the approach bridge 1. On the assembly support 2, each segment A1 of the arch rib is welded / bolted to form a complete first single-sub-arch 21 and second single-span arch. During the erection of the assembly support 2, the height of the assembly support 2 needs to be adjusted according to the arch linearity of the first single-sub-arch 21 and the second single-sub-arch 22 to reliably achieve the assembly of the first single-sub-arch 21 and the second single-sub-arch 22.

[0019] It is understood that there can be two or more assembly brackets 2, each assembly bracket 2 can be a box structure, and each assembly bracket 2 can be detachably set on the bearing surface of the approach bridge 1. During the installation of the first single secondary arch 21 and the second single arch, the assembly brackets 2 can reliably support the segments of the first single secondary arch 21 and the segments of the second single arch. The height of the assembly brackets 2 can be adjusted according to the arch curve of the first single secondary arch 21 and the second single arch, which is conducive to the positioning and installation of the segments of the first single secondary arch 21 and the second single arch, facilitates welding, and makes the line shape easy to control, thereby realizing the segmented assembly of the first single secondary arch 21 and the second single arch. The swivel ball joint 3 can be any type of ball joint, as long as it can enable the rotation of the first single-arch 21 and the second single-arch 22. Specifically, the swivel ball joint 3 can be installed at the arch foot of the first single-arch 21 and the arch foot of the second single-arch 22, between two segments of the arch foot. It is also understandable that the horizontal rotation power system is mainly used to drive the free ends of the first single-sub-arch 21 and the second single-sub-arch 22 to move while the first single-sub-arch 21 and the second single-sub-arch 22 rotate horizontally in a plane parallel to the bearing surface of the approach bridge 1 after the first single-sub-arch 21 and the second single-sub-arch 22 are assembled and one arch foot of the first single-sub-arch 21 and the second single-sub-arch 22 are fixed. The lateral rotation power system is mainly used to cause the arch feet of the first single-sub-arch 21 and the second single-sub-arch 22 to rotate around the lateral rotation ball joint 3 in a direction away from the bearing surface, so as to raise the arch tops of the first single-sub-arch 21 and the second single-sub-arch 22 to a predetermined height position.

[0020] The construction fixture for the outward-sloping arch rib in this application, through the setup of the approach bridge 1, assembly support 2, rotating ball joint 3, horizontal rotation power system and lateral rotation power system, makes full use of the approach bridge 1 as the arch rib assembly site, eliminating the need to rent sites on both banks of the bridge. The lateral rotation power point is provided by the self-weight of the approach bridge 1. There is no need to erect supports in the water during construction. The transport vessel 5 has a short service life and is easy to laterally rotate. The construction method of this invention has the advantages of simple construction operation, low investment and fast installation speed, and is suitable for the installation of outward-sloping arch ribs in water.

[0021] In some embodiments, the translational power system includes: The sliding system includes at least a sliding track 4, which is disposed on the bearing surface of the approach bridge 1 and extends from the approach bridge 1 toward the river on both sides. The transport vessel 5 is used to slide one end of the first single arch 21 and the second single arch 22 onto the transport vessel 5 after the first single arch 21 and the second single arch 22 are assembled. The transport vessel 5 then drives the first single arch 21 and the second single arch 22 to rotate around the rotating ball joint 3 and transport them to the predetermined position.

[0022] The sliding system may include, but is not limited to, jacks and wire ropes. The slide rail 4 may be any type of rail. Power is provided by the jacks and wire ropes to move the first single arch 21 and the second single arch 22 onto the slide rail 4 and along the slide rail 4 to the transport vessel 5. The transport vessel 5 transports the first single arch 21 and the second single arch 22 to the predetermined location (the predetermined bridge site of the arch rib on the opposite bank of the river) and connects the first single arch 21 and the second single arch 22 to the rotating ball joint 3 on the pre-set arch foot embedded section 13 on the opposite bank of the river to facilitate the lateral rotation of the first single arch 21 and the second single arch 22.

[0023] In some embodiments, the lateral steering power system includes: Rear anchor point 6 is set on the bearing surface of approach bridge 1; The traction system includes a slewing jack 7, a steel strand 8, and a slewing tie rod 9. The slewing jack 7 is installed on the bearing surface of the approach bridge 1. The slewing tie rod 9 is connected to the first single-arch 21 and the second single-arch 22 respectively. The two ends of the steel strand 8 are connected to the slewing tie rod 9 and the rear anchor point 6 respectively. The slewing jack 7 is connected to the steel strand 8 to transmit power to the first single-arch 21, the second single-arch 22, and the rear anchor point 6 through the steel strand 8, so as to drive the arch feet of the first single-arch 21 and the second single-arch 22 to rotate sideways around the slewing ball joint 3 in a direction away from the bearing surface, so as to lift the arch tops of the first single-arch 21 and the second single-arch 22 to a predetermined height position.

[0024] In this embodiment, a rear anchor point 6 is set on the approach bridge 1. The approach bridge 1 resists pull-out by its own weight. Two synchronous jacks 7 (or winches) are used to pull and fix the anchor steel strand 8. Rotation tie rods 9 are set on the first single arch 21 and the second single arch 22. Thus, a torque couple is formed on the arch and arch foot of the first single arch 21 and the second single arch 22 respectively to control the torsion. This ensures that the first single arch 21 and the second single arch 22 rotate around the rotation ball joint 3 in a direction away from the bearing surface, so that the arch tops of the first single arch 21 and the second single arch 22 are raised to a predetermined height position.

[0025] In some embodiments, the construction fixture further includes a first temporary tie rod 10 and a second temporary tie rod 11. The two ends of the first temporary tie rod 10 are respectively connected between the two arch feet of the first single arch 21, and the two ends of the second temporary tie rod 11 are respectively connected between the two arch feet of the second single arch 22, for balancing the weight to achieve lateral stability of the first single arch 21 and the second single arch 22.

[0026] In this embodiment, the setting of the first temporary tie rod 10 and the second temporary tie rod 11 helps to ensure that the first single secondary arch 21 and the second single secondary arch 22 maintain balance during horizontal and lateral rotation, preventing overturning and thus ensuring safe construction.

[0027] In summary, the construction tooling for the outward-sloping arch ribs of the embodiments of this application has a simple structure, does not require renting sites on both banks of the bridge site, and does not require erecting scaffolding in the water, thus reducing construction difficulty. Furthermore, the transport vessel 5 has a short usage time, saving costs and improving the construction efficiency of the arch ribs.

[0028] Secondly, embodiments of this application provide a construction method for an outwardly inclined arch rib, employing the construction tooling described in the first aspect, such as... Figures 1-10 As shown, the construction method includes the following steps: Step S10: On the approach bridges 1 on both sides of the river, the first single arch 21 and the second single arch 22 are assembled using the assembly bracket 2 respectively, and the rotating ball joint 3 is installed at the arch feet of the first single arch 21 and the second single arch 22 respectively, to obtain the assembled first single arch 21 and the second single arch 22. Among them, the rotating ball joint 3 is installed between the two segments of the first single-arch 21 and the second single-arch 22 located at the arch foot; Step S20: Use the horizontal rotation power system to drive the first single secondary arch 21 and the second single secondary arch 22 to rotate to the predetermined position, and connect the free ends of the first single secondary arch 21 and the second single secondary arch 22 to the rotating ball joint 3 of the pre-embedded section 13 of the arch foot on the other side. Step S30: Using a lateral rotation power system, drive the arch feet of the first single-sub-arch 21 and the second single-sub-arch 22 to rotate around the rotating ball joint 3 in a direction away from the bearing surface, so that the arch tops of the first single-sub-arch 21 and the second single-sub-arch 22 are raised to a predetermined height position.

[0029] As an feasible method, step S10 involves assembling the first single-arch 21 and the second single-arch 22 on the approach bridges 1 on both sides of the river using assembly brackets 2, and installing spherical hinges 3 at the arch feet of the first single-arch 21 and the second single-arch 22 respectively, to obtain the assembled first single-arch 21 and the second single-arch 22, including: Install arch foot pre-embedded sections 13 on the main pier arch seats on both sides of the river, and install rotating ball hinges 3 on the arch foot pre-embedded sections 13; On the approach bridge 1 on one side of the river, the other segments of the first single arch 21 and the second single arch 22 are assembled using the assembly bracket 2 and connected to the arch foot pre-embedded section 13 to obtain the assembled first single arch 21 and the second single arch 22.

[0030] Among them, the arch foot pre-embedded section 13 can be understood as the first segment of the first single secondary arch 21 and the second single secondary arch 22 respectively. The rotating ball hinge 3 is installed on the arch foot pre-embedded section 13 so that after the other stages of the first single secondary arch 21 and the second single secondary arch 22 are installed, the rotating ball hinge 3 is located between the first stage and the second stage respectively, which facilitates horizontal rotation and side rotation.

[0031] As an achievable method, step S20, using a horizontal rotation power system to drive the first single-sub-arch 21 and the second single-sub-arch 22 to rotate to a predetermined position, includes: Install the rotating support A2 on the transport vessel 5 and moor the transport vessel 5 on both sides of the approach bridge 1; A sliding system is installed on the approach bridge 1, and the first single arch 21 and the second single arch 22 are slid onto the rotating support A2 of the transport vessel 5 using the sliding system; The transport vessel 5 rotates the first single-sub-arch 21 and the second single-sub-arch 22 to a predetermined position, so that the free ends of the first single-sub-arch 21 and the second single-sub-arch 22 are located at the position of the pre-embedded section 13 at the arch foot on the other side.

[0032] As a means of implementation, step S30 involves using a lateral rotation power system to drive the arch feet of the first single-arch 21 and the second single-arch 22 to rotate laterally around the rotating ball joint 3 in a direction away from the bearing surface, so that the arch crowns of the first single-arch 21 and the second single-arch 22 are raised to a predetermined height position, including: Rotation tie rods 9 are installed on the first single secondary arch 21 and the second single secondary arch 22 respectively; Install rear anchor points 6, jacks 7 and steel strands 8 on the approach bridges 1 on both sides respectively, so that the two ends of the steel strands 8 are connected to the slewing tie rods 9 and the rear anchor points 6 respectively, and the slewing jacks 7 are connected to the steel strands 8. Using jack 7 and steel strand 8, the arch feet of the first single arch 21 and the second single arch 22 are rotated around the spherical hinge 3 in a direction away from the bearing surface, so that the arch tops of the first single arch 21 and the second single arch 22 are raised to a predetermined height.

[0033] As an feasible approach, before step S20, in which the first single-auxiliary arch 21 and the second single-auxiliary arch 22 are rotated to the predetermined position using a horizontal rotation power system, the construction method further includes: A first temporary tie rod 10 is installed between the two arch feet of the first single-sub-arch 21, and a second temporary tie rod 11 is installed between the two arch feet of the second single-sub-arch 22, to balance the weight and achieve lateral stability of the first single-sub-arch 21 and the second single-sub-arch 22.

[0034] As a feasible approach, after the crowns of the first single-sub-arch 21 and the second single-sub-arch 22 are raised to a predetermined height, the construction method further includes: Seal the connection between the rotating ball joint 3 of the arch foot embedded section 13 of the first single secondary arch 21 and the second single secondary arch 22 and the arch rib segment, respectively, and remove the horizontal rotation power system, the side rotation power system, the first temporary tie rod 10 and the second temporary tie rod 11.

[0035] Understandably, after the arch rib construction is completed, in order to ensure the integrity and reliability of the arch rib structure, it is necessary to fill the pre-embedded section 13 of the arch foot with concrete to seal the rotating ball joint 3 and improve the structural strength of the arch rib. At the same time, it is also necessary to dismantle the structure of the construction tools, such as the jack 7, steel strand, rotating tie rod 9, first temporary tie rod 10, second temporary tie rod 11, etc.

[0036] In summary, the construction method for the outward-sloping arch ribs of this application involves assembling the first single-section arch 21 and the second single-section arch 22 into a whole by building an assembly support 2 on the approach bridge 1. Then, the first single-section arch 21 and the second single-section arch 22 are horizontally rotated to the designed bridge site plane position using a transport vessel 5. Finally, the first single-section arch 21 and the second single-section arch 22 are laterally rotated to the designed position using a lateral rotation power system. The method of this application can fully utilize the approach bridge 1 as an assembly site, eliminating the need to rent sites on both banks of the bridge site. It utilizes the self-weight of the approach bridge 1 to provide the lateral rotation power point. During construction, there is no need to erect supports in the water. The vessel has a short service life, low lateral rotation difficulty, simple construction operation, low investment, and fast installation speed. It is suitable for the installation of outward-sloping arch ribs in water.

[0037] The construction method of the outward-sloping arch rib of the present invention will be described below through a specific embodiment.

[0038] like Figure 1 and Figure 2 As shown, the arch foot pre-embedded section 13 is installed on the main pier arch seat, and the first single arch 21 and the second single arch 22 are assembled on the approach bridge 1, and the rotating ball hinge 3 is installed on the arch foot pre-embedded section 13 respectively. like Figure 3 and Figure 4 As shown, a sliding system is installed on the approach bridge 1, and one end of the first single arch 21 and the second single arch 22 is moved to the sliding track 4 of the sliding system, and the support of the transport vessel 5 is moved along the sliding track 4. like Figure 5 and Figure 6As shown, the transport vessel 5 floats the other ends of the first single arch 21 and the second single arch 22 to the predetermined bridge site on the opposite bank, and connects the first single arch 21 and the second single arch 22 to the rotating ball joint 3 of the arch foot embedded section 13 on the other side. like Figure 7 and Figure 8 As shown, a rotating tie rod 9 is installed on the first single-sub-arch 21 and the second single-sub-arch 22 respectively. A rear anchor point 6, a jack 7 and a steel strand 8 are set on the approach bridge 1. The steel strand 8 is connected to the rear jack 7 and the rear anchor point 6. The other end of the steel strand 8 is connected to the rotating tie rod 9. The first single-sub-arch 21 and the second single-sub-arch 22 are rotated to the side by the jack 7, so that the arch top is raised to the preset height position. like Figure 9 and Figure 10 As shown, the spherical hinge 3 of the arch foot embedded section 13 of the first single-sub-arch 21 and the second single-sub-arch 22 and the connection of the arch rib segment are sealed respectively, and the horizontal rotation power system, the side rotation power system, the first temporary tie rod 10 and the second temporary tie rod 11 are removed, and the construction is completed.

[0039] Thirdly, the present invention provides an arch rib 20, which is installed using the construction method described in the second aspect. It is understood that this arch rib possesses all the characteristics and advantages of the aforementioned construction method, which will not be elaborated further here. In summary, this arch rib offers high construction efficiency and high construction safety.

[0040] The above description is merely a preferred embodiment of this application and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the invention involved in this application is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the inventive concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in this application.

Claims

1. A construction method for an outwardly inclined arch rib, characterized in that, The construction method includes the following steps: On the approach bridges on both sides of the river, a first single-section arch and a second single-section arch are assembled using assembly brackets. Rotating ball joints are then installed at the arch feet of the first and second single-section arches, respectively, to obtain the assembled first and second single-section arches, including: Install arch foot pre-embedded sections on the main pier arch seats on both sides of the river, and install the aforementioned rotating ball hinge on the arch foot pre-embedded sections; On the approach bridge on one side of the river, the other segments of the first single arch and the second single arch are assembled using assembly brackets and connected to the pre-embedded section at the arch foot to obtain the assembled first single arch and the second single arch. A horizontal rotation power system is used to rotate the first and second single-sub-arches to a predetermined position, and the free ends of the first and second single-sub-arches are connected to the rotating ball joint of the pre-embedded section of the arch foot on the other side, including: Install a rotating support frame on the transport vessel and moor the transport vessel on both sides of the approach bridge; A sliding system is installed on the approach bridge to slide the first single arch and the second single arch onto the rotating support of the transport vessel; wherein the sliding system includes at least a sliding track, which is disposed on the bearing surface of the approach bridge and extends from the approach bridge toward the river on both sides; The transport vessel rotates the first single-sub-arch and the second single-sub-arch to a predetermined position, so that the free ends of the first single-sub-arch and the second single-sub-arch are located at the position of the pre-embedded section of the arch foot on the other side; A lateral rotation power system is used to drive the arch feet of the first and second single-aspect arches to rotate laterally about the rotating ball joint in a direction away from the bearing surface, so as to raise the arch crowns of the first and second single-aspect arches to a predetermined height position, including: Rotation tie rods are installed on the first single-sub-arch and the second single-sub-arch respectively; Rear anchor points, jacks, and steel strands are installed on the approach bridges on both sides, so that the two ends of the steel strands are connected to the rotating tie rod and the rear anchor point respectively, and the jacks are connected to the steel strands. The jacks are used to drive the arch feet of the first single-arch and the second single-arch around the rotating ball joint in a direction away from the bearing surface via the steel strands, so that the arch tops of the first single-arch and the second single-arch are raised to a predetermined height.

2. The construction method according to claim 1, characterized in that, Before using the aforementioned horizontal rotation power system to rotate the first and second single-auxiliary arches to the predetermined positions, the construction method further includes: A first temporary tie rod is installed between the two arch feet of the first single-arch secondary arch, and a second temporary tie rod is installed between the two arch feet of the second single-arch secondary arch, to balance the weight and achieve lateral stability of the first and second single-arch secondary arches.

3. The construction method according to claim 2, characterized in that, After the crowns of the first and second single-arch sections are raised to a predetermined height, the construction method further includes: The spherical hinges and arch rib segments of the pre-embedded arch foot sections of the first and second single-arch arches are sealed off, and the horizontal rotation power system, the side rotation power system, the first temporary tie rod, and the second temporary tie rod are removed.

Images