Construction tool and construction method for outwards-inclined arch rib

Abstract

The invention discloses a construction tool and a construction method for an outwards-inclined arch rib. The construction tool comprises an approach bridge; the heights of the multiple assembly supports are matched with the arches of the first single-pair arch and the second single-pair arch; the swivel spherical hinges are respectively arranged on the arch feet of the first single auxiliary arch and the arch feet of the second single auxiliary arch; the horizontal rotation power system is used for driving the first single-pair arch and the second single-pair arch to horizontally rotate and transport to a preset position after the first single-pair arch and the second single-pair arch are assembled; and the lateral rotation power system is used for driving the arch feet of the first single auxiliary arch and the arch feet of the second single auxiliary arch to laterally rotate around the rotation spherical hinge in the direction away from the bearing surface, so that the arch top of the first single auxiliary arch and the arch top of the second single auxiliary arch are lifted to the preset height position. According to the construction tool and the construction method, a support does not need to be erected in water, the ship service cycle is short, and the construction efficiency is high.

Description

Technical Field

[0001] The present invention generally relates to the technical field of bridge construction equipment, and in particular to a construction tool and a construction method for an outward-inclined arch rib. Background Art

[0002] In modern bridge design, arch bridges are widely used due to their aesthetically pleasing structures and well-defined construction characteristics. Numerous methods exist for arch bridge construction, including scaffolding and splicing, cable-stayed and hooked construction, jacking, rotation, and overall lifting. Different methods are suited to varying on-site conditions, and developing a construction method suitable for underwater outward-sloping arch ribs is crucial. Summary of the Invention

[0003] In view of the above-mentioned defects or deficiencies in the prior art, it is desired to provide a construction tool and a construction method for an outward-inclined arch rib, which does not require setting up a support in water, has a short service life of the ship and high construction efficiency.

[0004] In a first aspect, the present invention provides a construction tool for an outward-inclined arch rib, wherein the arch rib includes a first single secondary arch and a second single secondary arch, and the construction tool includes: The approach bridge is used to provide a site for assembling the first single secondary arch and the second single secondary arch; Assembling brackets, including a plurality of assembling brackets, the plurality of assembling brackets are arranged perpendicular to the bearing surface of the approach bridge, and the heights of the plurality of assembling brackets match the arch shapes of the first single secondary arch and the second single secondary arch; A swivel ball joint, which is respectively mounted on the arch foot of the first single secondary arch and the arch foot of the second single secondary arch, and drives the first single secondary arch and the second single secondary arch to rotate horizontally at least within the plane where the bearing surface is located and to rotate laterally within a plane perpendicular to the bearing surface under the action of an external force; The horizontal rotation power system is used to drive the first and second single auxiliary arches to rotate horizontally and transport them to the predetermined position by the spherical joint after the first and second single auxiliary arches are assembled; The lateral rotation power system is used to drive the arch foot of the first single secondary arch and the arch foot of the second single secondary arch to rotate sideways around the rotating ball joint in a direction away from the bearing surface, so that the arch top of the first single secondary arch and the arch top of the second single secondary arch are lifted to a predetermined height position.

[0005] As an optional solution, the translational power system includes: The sliding system includes at least a slideway, which is arranged on the bearing surface of the approach bridge and extends from the approach bridge toward the river on both sides; The transport ship is used to, after the first single secondary arch and the second single secondary arch are assembled, the sliding system will translate one end of the first single secondary arch and the second single secondary arch to the transport ship, and the transport ship will drive the first single secondary arch and the second single secondary arch to rotate horizontally around the spherical joint 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 set on the bearing surface of the approach bridge; The traction system includes a swivel jack, a steel strand and a swivel pull rod. The swivel jack is installed on the bearing surface of the approach bridge. The swivel pull rod is respectively connected to the first single sub-arch and the second single sub-arch. The two ends of the steel strand are respectively connected to the swivel pull rod and the rear anchor point. The swivel jack is connected to the steel strand and is used to transmit power to the first single sub-arch, the second single sub-arch and the rear anchor point through the steel strand to drive the arch foot of the first single sub-arch and the arch foot of the second single sub-arch to rotate sideways around the swivel ball joint in the direction away from the bearing surface, so that the arch top of the first single sub-arch and the arch top of the second single sub-arch are lifted to a predetermined height position.

[0007] As an optional solution, the construction tooling also includes a first temporary tie rod and a second temporary tie rod, wherein 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, for balancing the weight to achieve lateral stability of the first single arch and the second single arch.

[0008] In a second aspect, the present invention provides a construction method for an outward-inclined arch rib, using the construction tool of the first aspect, the construction method comprising the following steps: Assembling the first single secondary arch and the second single secondary arch on the approach bridges on both sides of the river using assembly brackets, and installing rotating spherical joints on the arch feet of the first single secondary arch and the arch feet of the second single secondary arch, respectively, to obtain the assembled first single secondary arch and the second single secondary arch; A translation power system is used to drive the first single auxiliary arch and the second single auxiliary arch to translate to a predetermined position, and the free ends of the first single auxiliary arch and the second single auxiliary arch are connected to the rotating ball hinge of the 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 secondary arch and the arch feet of the second single secondary arch to rotate sideways around the rotating ball joint in a direction away from the bearing surface, so that the arch tops of the first single secondary arch and the second single secondary arch are lifted to a predetermined height position.

[0009] As an optional solution, the first single secondary arch and the second single secondary arch are assembled on the approach bridges on both sides of the river using assembly brackets, and swivel spherical joints are installed at the arch feet of the first single secondary arch and the arch feet of the second single secondary arch, respectively, to obtain the assembled first single secondary arch and the second single secondary arch, including: Install the pre-buried arch foot sections at the main pier arch seats on both sides of the river, and install swivel spherical joints on the pre-buried arch foot sections; On the approach bridge on one side of the river, other segments of the first single sub-arch and the second single sub-arch are assembled respectively using an assembly bracket, and are connected with the pre-embedded segments of the arch feet to obtain the assembled first single sub-arch and the second single sub-arch.

[0010] As an optional solution, using a translation power system to drive the first single auxiliary arch and the second single auxiliary arch to translate to a predetermined position includes: Install swivel brackets on the transport vessel and dock the transport vessel on both sides of the approach bridge; Install a sliding system on the approach bridge, and use the sliding system to slide the first single auxiliary arch and the second single auxiliary arch onto the swivel bracket of the transport ship; The transport ship rotates the first single secondary arch and the second single secondary arch to a predetermined position so that the free ends of the first single secondary arch and the second single secondary arch are located at the position of 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 foot of the first single secondary arch and the arch foot of the second single secondary arch to rotate laterally around the spherical joint of the rotating body in a direction away from the bearing surface, so that the arch top of the first single secondary arch and the arch top of the second single secondary arch are lifted to a predetermined height position, including: Installing swivel pull rods on the first single auxiliary arch and the second single auxiliary arch respectively; Install rear anchor points, jacks, and steel strands on the approach bridges on both sides, so that both ends of the steel strands are connected to the swivel rods and rear anchor points, and the swivel jacks are connected to the steel strands; A jack is used to drive the arch foot of the first single secondary arch and the arch foot of the second single secondary arch to rotate sideways in a direction away from the bearing surface around the spherical joint of the rotating body through a steel strand, so that the arch top of the first single secondary arch and the arch top of the second single secondary arch are lifted to a predetermined height position.

[0012] As an optional solution, before using the translation power system to drive the first single auxiliary arch and the second single auxiliary arch to translate to a predetermined position, the construction method further includes: A first temporary tie rod is installed between two arch feet of the first single secondary arch, and a second temporary tie rod is installed between two arch feet of the second single secondary arch, for balancing weight to achieve lateral stability of the first single secondary arch and the second single secondary arch.

[0013] As an optional solution, after the arch tops of the first single secondary arch and the arch tops of the second single secondary arch are raised to predetermined heights, the construction method further includes: The connections between the swivel spherical hinges and the arch rib segments of the embedded arch foot sections of the first and second single-sub-arches are respectively sealed, and the horizontal rotation power system, the lateral rotation power system, the first temporary tie rod and the second temporary tie rod are removed.

[0014] The construction tooling and construction method of the outward-inclined arch rib provided by the present invention, through the arrangement of the approach bridge, the assembly bracket, the swivel ball joint, the horizontal rotation power system and the lateral rotation power system, in the actual construction process, the arch rib segments are transported to the approach bridge, the arch ribs are assembled into a whole by the assembly bracket, and then the first single-sub-arch and the second single-sub-arch are horizontally rotated to the designed bridge plane position by using the transport ship, and then the first single-sub-arch and the second single-sub-arch are laterally rotated to the appropriate height position. The construction tooling and construction method of the present invention fully utilize the approach bridge as the arch rib assembly site, without the need to rent sites on both sides of the bridge site, and utilize the deadweight of the approach bridge to provide a lateral rotation power point. During the construction process, there is no need to set up a bracket in the water, the transport ship has a short service life, and the lateral rotation difficulty is small. The construction method of the present invention has the advantages of simple construction operation, low investment, and fast installation speed, and is suitable for the installation of outward-inclined arch ribs in water. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Other features, objects and advantages of the present application will become more apparent upon reading the detailed description of non-limiting embodiments made with reference to the following drawings: Figure 1 This application is a construction diagram of the outward-inclined arch rib of the embodiment (assembling the first single secondary arch and the second single secondary arch); Figure 2 for Figure 1 Schematic top view of Figure 3 This application shows a schematic diagram of the construction of the outward-inclined arch rib of an embodiment (the first single secondary arch and the second single secondary arch are slid onto the transport vessel); Figure 4 for Figure 3 Schematic top view of Figure 5 This application shows a schematic diagram of the construction of the outward-inclined arch rib of the embodiment (after the first single secondary arch and the second single secondary arch are rotated horizontally); Figure 6 for Figure 5 Schematic top view of Figure 7 This application is a construction diagram of an outward-inclined arch rib of an embodiment (the first single secondary arch and the second single secondary arch are turned sideways); Figure 8 for Figure 7 Schematic top view of Figure 9 This application shows a cross-sectional view of the outward-inclined arch rib after construction of the embodiment is completed; Figure 10 for Figure 9 Schematic top view of .

[0016] In the figure, 1. Approach bridge, 2. Assembly bracket, 3. Rotating ball joint, 4. Slideway, 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 secondary arch, 22, second single secondary arch; DETAILED DESCRIPTION The present application will be further described in detail below with reference to the embodiments. It will be understood that the specific embodiments described herein are intended only to explain the relevant invention and are not intended to limit the invention. It should be noted that, unless there is a conflict, the embodiments and features in the embodiments of the present application may be combined with each other. The present application will be described in detail below with reference to the embodiments.

[0017] The embodiment of the present application provides a construction tool for an outward-inclined arch rib, such as Figures 1-10 As shown, the arch rib 20 includes a first single secondary arch 21 and a second single secondary arch 22, and the construction tooling includes: The approach bridge 1 is used to provide a site for assembling the first single auxiliary arch 21 and the second single auxiliary arch 22; Assembling brackets 2, including multiple assembling brackets 2, the multiple assembling brackets 2 are arranged perpendicular to the bearing surface of the approach bridge 1, and the heights of the multiple assembling brackets 2 match the arch shapes of the first single auxiliary arch 21 and the second single auxiliary arch 22; The swivel spherical joint 3 is respectively mounted on the arch foot of the first single auxiliary arch 21 and the arch foot of the second single auxiliary arch 22. Under the action of an external force, the swivel spherical joint 3 drives the first single auxiliary arch 21 and the second single auxiliary arch 22 to rotate horizontally at least within the plane where the bearing surface is located and to rotate laterally in a plane perpendicular to the bearing surface; The horizontal rotation power system is used to drive the first single auxiliary arch 21 and the second single auxiliary arch 22 to rotate and transport the spherical joint 3 of the first single auxiliary arch 21 and the second single auxiliary arch 22 to a predetermined position after the first single auxiliary arch 21 and the second single auxiliary arch 22 are assembled; The lateral rotation power system is used to drive the arch foot of the first single secondary arch 21 and the arch foot of the second single secondary arch 22 to rotate sideways around the rotating ball joint 3 in a direction away from the bearing surface, so that the arch top of the first single secondary arch 21 and the arch top of the second single secondary arch 22 are lifted to a predetermined height position.

[0018] The approach bridge 1 refers to a transitional structure in a bridge project that connects the main bridge with the embankments or ground roads on both sides. Its core function is to solve the problem of bridging the elevation difference and horizontal distance between the main bridge and the ground. In this embodiment, the approach bridge 1 is mainly used to provide a site for assembling the first single auxiliary arch 21 and the second single auxiliary arch 22, eliminating the need to rent additional land on the shore. In actual processing, each segment A1 of the arch rib is transported to the approach bridge 1 area, the assembling support 2 is built on the approach bridge 1, and each segment A1 of the arch rib is welded / bolted to form a complete first single arch 21 and a second single arch on the assembling support 2; wherein, in the process of building the assembling support 2, the height of the assembling support 2 needs to be adjusted adaptively in combination with the arch linear degree of the first single arch 21 and the second single arch 22, so as to reliably realize the assembling of the first single arch 21 and the second single arch 22.

[0019] It can be understood that the assembling support 2 can be two or more, each assembling support 2 can be a box structure, and each assembling support 2 is detachably arranged on the bearing surface of the approach bridge 1. In the process of installing the first single arch 21 and the second single arch, the segment of the first single arch 21 and the segment of the second single arch can be reliably supported by arranging the assembling support 2, and the height of the assembling support 2 is adjusted along with the arch curve of the first single arch 21 and the second single arch, which is beneficial to the positioning and installation of the segment of the first single arch 21 and the segment of the second single arch, facilitates welding, and the linear type is easy to control, thereby realizing the segmented assembling of the first single arch 21 and the second single arch. The swivel ball hinge 3 can be any kind of ball hinge as long as it can realize the rotation of the first single arch 21 and the second single arch 22. The swivel ball hinge 3 can be installed at the arch foot of the first single arch 21 and the arch foot of the second single arch 22, and specifically between the two segments of the arch foot. It can also be understood that the horizontal rotation force system is mainly used for, after the first single arch 21 and the second single arch 22 are assembled, one arch foot of the first single arch 21 and the second single arch 22 is fixed, under the action of the swivel ball hinge 3, the free end of the first single arch 21 and the free end of the second single arch 22 are moved, and at the same time the first single arch 21 and the second single arch 22 horizontally rotate in the plane parallel to the bearing surface of the approach bridge 1. The side rotation force system is mainly used for, under the action of the swivel ball hinge 3, the arch foot of the first single arch 21 and the arch foot of the second single arch 22 rotate around the swivel ball hinge 3 in the direction away from the bearing surface, so that the arch top of the first single arch 21 and the arch top of the second single arch 22 are lifted to a predetermined height position.

[0020] The construction tool of the inclined arch rib of the embodiment of the application fully utilizes the approach bridge 1 as the arch rib assembling site, does not need to rent the site on both sides of the bridge, uses the self-weight of the approach bridge 1 to provide the side rotation force point, does not need to build a support in the water in the construction process, the service cycle of the transport ship 5 is short, the side rotation difficulty is small, the construction method of the application has the advantages of simple construction operation, low investment and fast installation speed, and is suitable for the installation of the inclined arch rib in the water.

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

[0022] Among them, the sliding system can also include but is not limited to jacks and wire ropes, and the slide 4 can be any kind of slide rail. The jacks and wire ropes provide power to move the first single arch 21 and the second single arch 22 onto the slide 4, and move them along the slide 4 to the transport ship 5. The transport ship 5 transports the first single arch 21 and the second single arch 22 to a predetermined position (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 swivel 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 side-turn power system includes: The rear anchor point 6 is provided on the bearing surface of the approach bridge 1; The traction system includes a swivel jack 7, a steel strand 8 and a swivel pull rod 9. The swivel jack 7 is installed on the bearing surface of the approach bridge 1. The swivel pull rod 9 is respectively connected to the first single secondary arch 21 and the second single secondary arch 22. The two ends of the steel strand 8 are respectively connected to the swivel pull rod 9 and the rear anchor point 6, and the swivel jack 7 is connected to the steel strand 8, which is used to transmit power to the first single secondary arch 21, the second single secondary arch 22 and the rear anchor point 6 through the steel strand 8, so as to drive the arch foot of the first single secondary arch 21 and the arch foot of the second single secondary arch 22 to rotate sideways around the swivel ball joint 3 in the direction away from the bearing surface, so that the arch top of the first single secondary arch 21 and the arch top of the second single secondary arch 22 are lifted to a predetermined height position.

[0024] In this embodiment, a rear anchor point 6 is provided on the approach bridge 1, and the deadweight of the approach bridge 1 is utilized to resist pulling out. Two synchronous jacks 7 (or winches) are used to pull the anchoring steel strands 8, and a swivel pull rod 9 is provided on the first single-sub-arch 21 and the second single-sub-arch 22, thereby forming a force couple on the arch and the arch foot of the first single-sub-arch 21 and the second single-sub-arch 22 to control torsion, thereby ensuring that the first single-sub-arch 21 and the second single-sub-arch 22 rotate around the swivel spherical 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 lifted to a predetermined height position.

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

[0026] In this embodiment, the provision of the first temporary tie rod 10 and the second temporary tie rod 11 is conducive to ensuring that the first single secondary arch 21 and the second single secondary arch 22 maintain balance during the horizontal and lateral rotation processes and do not overturn, thereby ensuring safe construction.

[0027] In summary, the construction tooling of the outward-inclined arch ribs of the embodiment of the present application has a simple structure, and does not require renting sites on both sides of the bridge, and does not require setting up supports in the water, which reduces the difficulty of construction, and the use time of the transport ship 5 is short, saving costs, thereby improving the construction efficiency of the arch ribs.

[0028] In a second aspect, an embodiment of the present application provides a construction method for an outward-inclined arch rib, using the construction tooling of the first aspect, such as Figures 1-10 As shown, the construction method includes the following steps: Step S10: assemble the first single secondary arch 21 and the second single secondary arch 22 on the approach bridge 1 on both sides of the river using the assembly bracket 2, and install the swivel spherical joint 3 on the arch foot of the first single secondary arch 21 and the arch foot of the second single secondary arch 22, respectively, to obtain the assembled first single secondary arch 21 and the second single secondary arch 22; The swivel ball joint 3 is installed between the two segments of the first single auxiliary arch 21 and the second single auxiliary arch 22 located at the arch foot; Step S20: Using the translation power system to drive the first single auxiliary arch 21 and the second single auxiliary arch 22 to translate to a predetermined position, and connecting the free ends of the first single auxiliary arch 21 and the second single auxiliary arch 22 to the swivel ball joint 3 of the arch foot embedded section 13 on the other side; Step S30: Use the lateral rotation power system to drive the arch foot of the first single secondary arch 21 and the arch foot of the second single secondary arch 22 to rotate sideways around the rotating ball joint 3 in a direction away from the bearing surface, so that the arch top of the first single secondary arch 21 and the arch top of the second single secondary arch 22 are lifted to a predetermined height position.

[0029] As an achievable method, step S10, using the assembly bracket 2 to respectively assemble the first single secondary arch 21 and the second single secondary arch 22 on the approach bridge 1 on both sides of the river, and respectively installing the swivel ball joint 3 at the arch foot of the first single secondary arch 21 and the arch foot of the second single secondary arch 22, to obtain the assembled first single secondary arch 21 and the second single secondary arch 22, includes: Install the arch foot embedded section 13 on the main pier arch seats on both sides of the river, and install the swivel ball joint 3 on the arch foot embedded section 13; On the approach bridge 1 on one side of the river, the other segments of the first single secondary arch 21 and the second single secondary arch 22 are assembled respectively using the assembly bracket 2 and connected to the pre-embedded segment 13 of the arch foot to obtain the assembled first single secondary arch 21 and the second single secondary arch 22.

[0030] Among them, the arch foot embedded section 13 can be understood as the first segment of each of the first single sub-arch 21 and the second single sub-arch 22. The swivel ball joint 3 is installed on the arch foot embedded section 13, so that after the other stages of the first single sub-arch 21 and the second single sub-arch 22 are installed, the swivel ball joint 3 is located between their respective first stage and second stage, which facilitates the realization of horizontal rotation and lateral rotation.

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

[0032] As an implementation method, step S30, using a lateral rotation power system to drive the arch foot of the first single secondary arch 21 and the arch foot of the second single secondary arch 22 to lateral rotation around the spherical joint 3 of the rotating body in a direction away from the bearing surface, so that the arch top of the first single secondary arch 21 and the arch top of the second single secondary arch 22 are raised to a predetermined height position, includes: Install the swivel pull rod 9 on the first single auxiliary arch 21 and the second single auxiliary arch 22 respectively; Install rear anchor points 6, jacks 7 and steel strands 8 on the approach bridges 1 on both sides, so that both ends of the steel strands 8 are connected to the swivel rods 9 and the rear anchor points 6, and the swivel jacks 7 are connected to the steel strands 8; The jack 7 is used to drive the arch foot of the first single secondary arch 21 and the arch foot of the second single secondary arch 22 through the steel strand 8 to rotate the spherical joint 3 of the rotating body in a direction away from the bearing surface, so that the arch top of the first single secondary arch 21 and the arch top of the second single secondary arch 22 are lifted to a predetermined height position.

[0033] As an achievable manner, before step S20, in which the first single auxiliary arch 21 and the second single auxiliary arch 22 are driven to rotate horizontally to predetermined positions by the horizontal rotation power system, the construction method further comprises: A first temporary tie rod 10 is installed between the two arch feet of the first single secondary arch 21 , and a second temporary tie rod 11 is installed between the two arch feet of the second single secondary arch 22 , for balancing the weight to achieve lateral stability of the first and second single secondary arches 21 and 22 .

[0034] As an achievable manner, after the arch tops of the first single secondary arch 21 and the second single secondary arch 22 are lifted to predetermined heights, the construction method further comprises: The connections between the swivel spherical joint 3 and the arch rib segment of the arch foot embedded section 13 of the first single auxiliary arch 21 and the second single auxiliary arch 22 are closed respectively, and the horizontal rotation power system, the lateral rotation power system, the first temporary tie rod 10 and the second temporary tie rod 11 are removed.

[0035] It is understandable that after the construction of the arch rib is completed, in order to ensure the integrity and reliability of the arch rib, it is necessary to pour concrete to seal the swivel ball joint 3 of the embedded section 13 of the arch foot to improve the structural strength of the arch rib; at the same time, it is also necessary to dismantle the structure of the construction tooling, such as the jack 7, steel rope, swivel pull rod 9, first temporary tie rod 10, second temporary tie rod 11, etc.

[0036] In summary, the construction method of the outward-inclined arch rib of the embodiment of the present application is to assemble the first single secondary arch 21 and the second single secondary arch 22 into a whole by building an assembly bracket 2 on the approach bridge 1, and then use the transport ship 5 to horizontally rotate the first single secondary arch 21 and the second single secondary arch 22 to the designed bridge position plane position, and then use the side-turning power system to side-turn the first single secondary arch 21 and the second single secondary arch 22 to the designed position. The method of the embodiment of the present application can fully utilize the approach bridge 1 as an assembly site, without the need to rent sites on both sides of the bridge position, and use the deadweight of the approach bridge 1 to provide a side-turning power point. During the construction process, there is no need to set up brackets in the water. The ship has a short service life, low side-turning difficulty, simple construction operation, low investment, and fast installation speed. It is suitable for the installation of outward-inclined arch ribs in water.

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

[0038] like Figure 1 and Figure 2 As shown, the arch foot embedded section 13 is installed on the main pier arch seat, and the first single secondary arch 21 and the second single secondary arch 22 are assembled on the approach bridge 1, and the swivel ball joint 3 is installed on the arch foot 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 auxiliary arch 21 and the second single auxiliary arch 22 are moved to the slideway 4 of the sliding system, and the support of the transport ship 5 is moved along the slideway 4; like Figure 5 and Figure 6As shown, the transport vessel 5 floats the other ends of the first single secondary arch 21 and the second single secondary arch 22 to the predetermined bridge site on the opposite bank, and respectively connects the first single secondary arch 21 and the second single secondary arch 22 to the swivel spherical joint 3 of the arch foot embedded section 13 on the other side; like Figure 7 and Figure 8 As shown, a rotation rod 9 is installed on the first single-sub-arch 21 and the second single-sub-arch 22 respectively, and a rear anchor point 6, a jack 7 and a steel strand 8 are provided 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 rotation rod 9. The jack 7 drives the first single-sub-arch 21 and the second single-sub-arch 22 to rotate sideways, so that the arch top is raised to a preset height position. like Figure 9 and Figure 10 As shown, the connections between the swivel ball joint 3 and the arch rib segment of the arch foot embedded section 13 of the first single auxiliary arch 21 and the second single auxiliary arch 22 are closed respectively, and the horizontal rotation power system, the lateral rotation power system, the first temporary tie rod 10 and the second temporary tie rod 11 are removed, and the construction is completed.

[0039] In a third aspect, the present invention provides an arch rib 20 installed using the construction method of the second aspect. It will be appreciated that this arch rib possesses all the features and advantages of the aforementioned construction method, and further details will not be given here. In summary, this arch rib offers high construction efficiency and safety.

[0040] The above description is merely a preferred embodiment of the present application and an illustration of the technical principles employed. Those skilled in the art should understand that the scope of the invention herein is not limited to the technical solutions formed by the specific combination of the above-mentioned technical features, but also encompasses other technical solutions formed by any combination of the above-mentioned technical features or their equivalents without departing from the inventive concept. For example, a technical solution formed by replacing the above-mentioned features with (but not limited to) technical features having similar functions disclosed in this application.

Claims

1. A construction tool for an outward-inclined arch rib, characterized in that: The arch rib includes a first single secondary arch and a second single secondary arch, and the construction tool includes: The approach bridge is used to provide a site for assembling the first single secondary arch and the second single secondary arch; Assembling brackets, including a plurality of assembling brackets, the plurality of assembling brackets are arranged perpendicular to the bearing surface of the approach bridge, and the heights of the plurality of assembling brackets match the arch shapes of the first single secondary arch and the second single secondary arch; a swivel ball joint, the swivel ball joint being mounted on the arch foot of the first single secondary arch and the arch foot of the second single secondary arch, and driving the first single secondary arch and the second single secondary arch to rotate horizontally at least within the plane where the bearing surface is located and to rotate laterally in a direction away from the bearing surface under the action of an external force; A translational power system is used to drive the translational ball joints of the first and second single-subordinate arches to translate and transport them to a predetermined position after the first and second single-subordinate arches are assembled; The lateral rotation power system is used to drive the arch foot of the first single arch and the arch foot of the second single arch to rotate sideways around the rotating ball joint in a direction away from the 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.

2. The construction tool according to claim 1, characterized in that: The translation power system comprises: A sliding system, the sliding system at least comprising the slideway, the slideway being arranged on the bearing surface of the approach bridge and extending from the approach bridge toward the river on both sides; The transport ship is used for, after the first single secondary arch and the second single secondary arch are assembled, the sliding system translates one end of the first single secondary arch and the second single secondary arch to the transport ship, and the transport ship drives the first single secondary arch and the second single secondary arch to rotate around the swivel ball joint and transport them to a predetermined position.

3. The construction tool according to claim 1, characterized in that: The side-turn power system includes: a rear anchor point, arranged on the bearing surface of the approach bridge; A traction system, the traction system includes a swivel jack, a steel strand and a swivel pull rod, the swivel jack is installed on the bearing surface of the approach bridge, the swivel pull rod is respectively connected to the first single arch and the second single arch, the two ends of the steel strand are respectively connected to the swivel pull rod and the rear anchor point, and the swivel jack is connected to the steel strand, for transmitting power to the first single arch, the second single arch and the rear anchor point through the steel strand, so as to drive the arch foot of the first single arch and the arch foot of the second single arch to rotate sideways around the swivel ball joint in the direction away from the 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.

4. The construction tool according to any one of claims 1 to 3, characterized in that: The construction tool also includes 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, which are used to balance the weight to achieve lateral stability of the first single arch and the second single arch.

5. A construction method for an outward-inclined arch rib, characterized in that: Using the construction tool according to any one of claims 1 to 4, the construction method comprises the following steps: Assembling the first single secondary arch and the second single secondary arch respectively on the approach bridges on both sides of the river using assembly brackets, and installing the swivel spherical joints at the arch feet of the first single secondary arch and the arch feet of the second single secondary arch respectively, to obtain the assembled first single secondary arch and the second single secondary arch; The translational power system is used to drive the first single secondary arch and the second single secondary arch to translate to a predetermined position, and the free ends of the first single secondary arch and the second single secondary arch are connected to the swivel spherical hinge of the embedded section of the arch foot on the other side; The lateral rotation power system is used to drive the arch foot of the first single arch and the arch foot of the second single arch to rotate sideways around the rotating ball joint in a direction away from the 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.

6. The construction method according to claim 5, characterized in that: The first single secondary arch and the second single secondary arch are respectively assembled on the approach bridges on both sides of the river using assembly brackets, and the swivel spherical joints are respectively installed on the arch feet of the first single secondary arch and the arch feet of the second single secondary arch to obtain the assembled first single secondary arch and the second single secondary arch, including: Installing the arch foot embedded sections on the main pier arch seats on both sides of the river, and installing the swivel spherical joints on the arch foot embedded sections; On the approach bridge on one side of the river, other segments of the first single sub-arch and the second single sub-arch are assembled respectively using an assembling bracket, and are connected with the pre-embedded segments of the arch feet to obtain the assembled first single sub-arch and the second single sub-arch.

7. The construction method according to claim 5, characterized in that: Using the translation power system to drive the first single auxiliary arch and the second single auxiliary arch to translate to a predetermined position includes: Installing a swivel bracket on the transport vessel and mooring the transport vessel on both sides of the approach bridge; Installing the sliding system on the approach bridge, and using the sliding system to slide the first single secondary arch and the second single secondary arch onto the swivel bracket of the transport ship; The transport ship rotates the first single secondary arch and the second single secondary arch horizontally to a predetermined position, so that the free ends of the first single secondary arch and the second single secondary arch are located at the position of the embedded section of the arch foot on the other side.

8. The construction method according to claim 5, characterized in that: The method comprises: using the lateral rotation power system to drive the arch foot of the first single secondary arch and the arch foot of the second single secondary arch to laterally rotate around the swivel ball joint in a direction away from the bearing surface, so that the arch top of the first single secondary arch and the arch top of the second single secondary arch are lifted to a predetermined height position, comprising: Installing swivel pull rods on the first single secondary arch and the second single secondary arch respectively; Rear anchor points, jacks, and steel strands are installed on the approach bridges on both sides, so that both ends of the steel strands are connected to the swivel rods and the rear anchor points, and the swivel jacks are connected to the steel strands; The jack is used to drive the arch foot of the first single arch and the arch foot of the second single arch through the steel strand to rotate sideways around the swivel ball joint in a direction away from the 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.

9. The construction method according to claim 5, characterized in that: Before using the translation power system to drive the first single secondary arch and the second single secondary arch to translate to a predetermined position, the construction method further includes: A first temporary tie rod is installed between the two arch feet of the first single secondary arch, and a second temporary tie rod is installed between the two arch feet of the second single secondary arch, for balancing weight to achieve lateral stability of the first and second single secondary arches.

10. The construction method according to claim 5, characterized in that: After the arch tops of the first single secondary arch and the second single secondary arch are lifted to predetermined heights, the construction method further includes: The connections between the swivel spherical hinges and the arch rib segments of the embedded arch foot sections of the first single secondary arch and the second single secondary arch are respectively closed, and the translation power system, the lateral rotation power system, the first temporary tie rod and the second temporary tie rod are removed.

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