Suspender device for suspending arch bridge main beam and construction method of suspender device

Abstract

The invention relates to the technical field of arch bridge design and construction, in particular to a suspender device for suspending an arch bridge girder and a construction method of the suspender device. The suspender device comprises an inhaul cable provided with a cable body; the anchorage device is provided with a sleeving hole channel which is gradually reduced along the axial section and penetrates through the two ends of the anchorage device; wherein the anchorage device is connected to the cable body in a sleeved mode, the cable body is formed by twisting a plurality of bundles of steel wires, the end, with the smaller section, of the sleeved hole channel is far away from the end of the cable body, and the end, with the larger section, of the sleeved hole channel is close to the end of the cable body. According to the device, the sleeving hole channels for converging and fixing the inhaul cables are formed in the anchorage devices, the anchorage devices are installed at the two ends of the inhaul cables, the main beam of the arch bridge and the arch rib of the arch bridge are connected and fixed through the anchorage devices, the connection mode of the suspender device, the main beam and the arch rib is optimized, the suspension procedure of the main beam of the arch bridge is simplified, and the construction efficiency is improved; and the inhaul cable and the anchorage device are easy to assemble and disassemble, so that the length of the suspender device is conveniently adjusted.

Description

Technical Field

[0001] The present invention relates to the technical field of arch bridge design and construction, and particularly to a hanger device for the main beam of a suspended arch bridge and a construction method thereof. Background Art

[0002] In the prior art, beam-arch composite bridges are widely used in urban bridges and railway overpass bridges. Among them, the main beam adopts a prestressed concrete or steel-concrete structural form, and the arch rib adopts a dumbbell-shaped or truss-type concrete-filled steel tube structural form. The hanger device is a force-transferring member between the arch rib and the main beam, with uniform stress, good anchoring performance, and high reliability.

[0003] However, the anchoring connection structures between the traditional hanger device and the main beam and the arch rib are relatively single, and the distance between the arch rib and the main beam is inconsistent in the length direction of the arch bridge, resulting in a complex construction process for connecting the main beam and the arch rib using the hanger device, a long construction period, and a large difference in the service life of each hanger device distributed along the arch bridge. Summary of the Invention

[0004] The present invention aims to solve at least one of the technical problems existing in the related art. Therefore, the present invention provides a hanger device for the main beam of a suspended arch bridge and a construction method thereof to achieve the purpose of optimizing the structure of the hanger device, simplifying the process of suspending the main beam of the arch bridge, and shortening the construction period.

[0005] In a first aspect, the present invention provides a hanger device for the main beam of a suspended arch bridge, the hanger device comprising: A cable, provided with a cable body; An anchor, provided with a socket hole that gradually narrows along its axial cross-section and penetrates both ends; Wherein, the anchor is sleeved on the cable body, the cable body is composed of a plurality of bundles of steel wires stranded together, and the smaller cross-sectional end of the socket hole is set away from the end of the cable body, and the larger cross-sectional end is set close to the end of the cable body.

[0006] According to the hanger device for the main beam of a suspended arch bridge provided by the present invention, the anchor comprises an anchor cup, and the surface of the socket hole is set to be conical and located at the center of the anchor cup.

[0007] According to the hanger device for the main beam of a suspended arch bridge provided by the present invention, the anchor cup comprises a fixed-end anchor cup and a tensioning-end anchor cup respectively installed at both ends of the cable body, and the tensioning-end anchor cup is provided with internal threads at the larger cross-sectional end of the socket hole.

[0008] According to the hanger device for the main beam of a suspended arch bridge provided by the present invention, the anchor further comprises a fine-tuning assembly sleeved on the tensioning-end anchor cup for adjusting and compensating for the stress loss during the construction of the cable or correcting the errors occurring during the construction.

[0009] According to a hanger device for the main beam of a suspension arch bridge provided by the present invention, the fine-tuning assembly includes a spherical nut and a spherical washer. One end of the spherical nut is provided with a spherical convex surface, and one end of the spherical washer is provided with a spherical concave surface; The outer peripheral wall of the tension end anchor cup is provided with an external thread. The spherical nut is connected to the tension end anchor cup through the external thread, and the spherical washer is slidably abutted against the spherical convex surface of the spherical nut through the spherical concave surface.

[0010] According to a hanger device for the main beam of a suspension arch bridge provided by the present invention, it further includes a connecting cylinder sleeved on the outer periphery of the cable. One end of the connecting cylinder is inserted into the socket hole, and the other end of the connecting cylinder extends towards the middle of the cable.

[0011] According to a hanger device for the main beam of a suspension arch bridge provided by the present invention, it further includes a heat shrinkable tube. One end of the heat shrinkable tube is sleeved on the end of the connecting cylinder, and the other end of the heat shrinkable tube is sleeved on the cable.

[0012] According to a hanger device for the main beam of a suspension arch bridge provided by the present invention, it further includes a plug. One end of the plug is inserted into the gap between the connecting cylinder and the cable.

[0013] According to a hanger device for the main beam of a suspension arch bridge provided by the present invention, the anchor also includes an anchor plate and a restraint ring. The anchor plate is installed at the maximum cross-section end of the socket hole, and the restraint ring is installed at the minimum cross-section end of the socket hole.

[0014] In a second aspect, the present invention also provides a construction method for the main beam of a suspension arch bridge. Using the hanger device described in any one of the above, the construction steps include: S1. Install the tensioning anchors of all hanger devices at the set positions on the arch rib one by one; S2. Use a cable crane to transport the main beam segment to the designed position and connect the fixed anchor of the hanger device to the main beam segment; S3. Install the equipment for tensioning the hanger device in S2 on the arch rib, and tension the main beam segment to the designed elevation or make the cable force reach the designed initial tension value; S4. Repeat steps S2 and S3 until the hoisting of all main beam segments and the beam-end installation of the hanger device are completed; S5. Tension all hanger devices to the designed cable force value; S6. Install the auxiliary facilities of the hanger device.

[0015] One or more of the above technical solutions in the present invention have at least one of the following technical effects: A socket hole channel that converges and fixes the stay cable is provided in the anchor, and anchors are installed at both ends of the stay cable. The main beam of the arch bridge and the arch rib of the arch bridge are connected and fixed through the anchors, which not only optimizes the connection method between the suspender device and the main beam and the arch rib, simplifies the suspension process of the main beam of the arch bridge, and improves the construction efficiency; but also makes the stay cable and the anchor easy to install and disassemble, and thus conveniently adjusts the length of the suspender device.

[0016] In addition to the technical problems solved by the present invention, the technical features of the technical solutions formed, and the advantages brought by the technical features of these technical solutions described above, the other technical features of the present invention and the advantages brought by these technical features will be further described in conjunction with the accompanying drawings, or will be understood through the practice of the present invention. Brief Description of the Drawings

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or related technologies, the following will briefly introduce the accompanying drawings required for use in the description of the embodiments or related technologies. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other accompanying drawings can be obtained based on these drawings without creative efforts.

[0018] Figure 1 Structural schematic diagram of the suspender device provided by the embodiment of the present invention.

[0019] Figure 2 Cross-sectional schematic diagram of the stay cable provided by the embodiment of the present invention.

[0020] Figure 3 Overall structural schematic diagram of the arch bridge provided by the embodiment of the present invention.

[0021] Figure 4 Cross-sectional view of the arch rib provided by the embodiment of the present invention.

[0022] Figure 5 For Figure 4 Enlarged schematic diagram of the local area A in

[0023] Figure 6 Cross-sectional view of the main beam provided by the embodiment of the present invention.

[0024] Figure 7 Structural diagram of the suspender device passing through the arch end cable duct and the beam end cable duct provided by the embodiment of the present invention.

[0025] Figure 8 Flowchart of the installation construction method of the suspender device provided by the embodiment of the present invention.

[0026] Reference Signs: 100, Cable; 110, Cable body; 120, Protection layer; 121, Black polyethylene; 122, White polyethylene; 200, Anchor; 210, Socketed channel; 220, Anchor cup; 221, Tension end anchor cup; 222, Fixed end anchor cup; 230, Fine-tuning component; 231, Ball nut; 232, Ball washer; 240, Anchor plate; 250, Constraint ring; 300, Connecting cylinder; 400, Heat shrinkable tube; 500, Plug; 10, Arch rib; 11, Anchor backing plate; 12, Arch end cable duct; 20, Main beam; 21, Anchor cup nut; 22, Beam end cable duct; 30, Suspender device; 31, Vibration damper; 32, Waterproof cover; 33, Protective cover. Detailed implementation manner

[0027] To make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions in the present invention will be clearly described below in conjunction with the accompanying drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0028] In the description of the embodiments of the present invention, it should be noted that the orientation or positional relationships indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings. It is only for the convenience of describing the embodiments of 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 should not be construed as a limitation to the embodiments of the present invention. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0029] In the description of the embodiments of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "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 directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0030] In the embodiments of the present invention, unless otherwise clearly specified and limited, the first feature being "on" or "under" the second feature may mean that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath" and "underneath" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the horizontal height of the first feature is less than that of the second feature.

[0031] In the description of this specification, the description referring to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the embodiments of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0032] As Figure 3 shown, beam-arch composite bridges are widely used in urban bridges and railway overpasses. Among them, the main beam adopts a prestressed concrete or steel-concrete structural form, and the arch rib adopts a dumbbell-shaped or truss-type concrete-filled steel tube structural form. The suspender device is a force-transferring member between the arch rib and the main beam, with uniform stress, good anchoring performance, and high reliability.

[0033] However, the anchoring connection structures of the traditional suspender device with the main beam and the arch rib are relatively single, and in the longitudinal direction of the arch bridge, the distance between the arch rib and the main beam is inconsistent, resulting in relatively complex construction procedures for connecting the main beam and the arch rib using the suspender device, a long construction period, and significant differences in the service life of each suspender device distributed along the arch bridge.

[0034] To solve the above problems, in the embodiments of the present invention, a suspender device for suspending the main beam of an arch bridge is introduced.

[0035] As Figure 1 and Figure 2 shown, the suspender device mainly includes a cable 100 and an anchor 200. Among them, the cable 100 is provided with a cable body 110 and a protective layer 120 covering the outer periphery of the cable body 110. The cable body 110 is composed of several strands of steel wires stranded together. The protective layer 120 is made of high-density polyethylene material. The protective layer 120 is provided with two layers, an inner layer of black polyethylene 121 and an outer layer of white polyethylene 122.

[0036] The anchor 200 is provided with a socket channel 210. The cross-section of the socket channel 210 gradually narrows along its axial direction and penetrates through both ends of the anchor 200. The anchor 200 is sleeved on the cable body 110. One end with a smaller cross-section in the socket channel 210 is away from the end of the cable body 110, and one end with a larger cross-section is arranged close to the end of the cable body 110.

[0037] Furthermore, the anchor 200 includes a tensioning anchor installed at the first end of the stay cable 100 for connecting and fixing to the arch rib of the arch bridge. The anchor 200 also includes a fixing anchor installed at the second end of the stay cable 100 for connecting and fixing to the main beam of the arch bridge.

[0038] Furthermore, the hanger device is also provided with a waterproof cover 32, which respectively covers the ends of the tensioning anchor and the fixing anchor.

[0039] In this embodiment, a socket channel 210 that converges and fixes the stay cable 100 is arranged in the anchor 200, and the anchors 200 are installed at both ends of the stay cable 100. The main beam of the arch bridge and the arch rib of the arch bridge are connected and fixed through the anchors 200, which not only optimizes the connection method between the hanger device and the main beam and the arch rib, simplifies the suspension process of the main beam of the arch bridge, and improves the construction efficiency; but also makes the stay cable 100 and the anchor 200 easy to install and disassemble, and thus conveniently adjusts the length of the hanger device.

[0040] Based on the above embodiment, in another embodiment of the present invention, a hanger device for suspending the main beam of an arch bridge is introduced.

[0041] In order to facilitate fixing to the arch rib and the main beam, the anchor 200 includes an anchor cup 220 protruding along the outer periphery of the cable body 110. The cross-section of the anchor cup 220 is larger than the cross-section of the cable body 110. The surface of the socket channel 210 is arranged in a conical shape. And the conical socket channel 210 is located at the center of the anchor cup 220.

[0042] Based on the above embodiment, in another embodiment of the present invention, a hanger device for suspending the main beam of an arch bridge is introduced.

[0043] The anchor cup 220 includes a fixed-end anchor cup 222 and a tensioning-end anchor cup 221 respectively installed at both ends of the cable body 110. As Figure 1 shown, the tensioning-end anchor cup 221 is provided with internal threads at the end with a larger cross-section in the socket channel 210 for installing a tension rod and a tension nut.

[0044] Preferably, a corresponding tensioning insert can also be designed according to the size and depth of the internal threads of the tensioning-end anchor cup 221. In this way, the jack can perform tensioning construction on the hanger device through the tensioning insert, the tension rod and the tension nut, and adjust the cable force value of the hanger device.

[0045] Based on the above embodiments, in another embodiment of the present invention, a suspender device for the main girder of a suspended arch bridge is introduced.

[0046] Since the arch rib is an arc-shaped structure, the inclination angle between the arch rib and the horizontal plane continuously changes in its length direction. When the suspender device is installed at different positions on the arch rib, different inclination angles will be formed between the tension end anchor cup 221 and the arch rib. If the tension end anchor cup 221 is directly fixed to the arch rib, the cable body 110 will be bent. In addition, the deck alignment of the main girder and the suspender device for hoisting the main girder need to be adjusted by the cable several times to make the structural internal force meet the design requirements to the greatest extent.

[0047] Therefore, the anchor 200 further includes a fine-tuning component 230 sleeved on the tension end anchor cup 221, which is used to adjust and compensate for the stress loss of the cable 100 during construction or correct the errors occurring during construction. The elevation of the main girder can also be achieved by changing the relative position between the fine-tuning component and the anchor cup 220.

[0048] Furthermore, the fine-tuning component 230 includes a spherical nut 231 and a spherical washer 232. One end of the spherical nut 231 is provided with a spherical convex surface, and one end of the spherical washer 232 is provided with a spherical concave surface.

[0049] The outer peripheral wall of the tension end anchor cup 221 is provided with an external thread. The spherical nut 231 is connected to the tension end anchor cup 221 through the external thread. The spherical washer 232 is slidably abutted against the spherical convex surface of the spherical nut 231 through the spherical concave surface, so that when the tension end anchor cup 221 is installed at different positions on the arch rib, it can be adjusted adaptively to adapt to the slope change of the arch rib, and is used to adjust the extension direction of the cable 100 to avoid bending.

[0050] Based on the above embodiments, in another embodiment of the present invention, a suspender device for the main girder of a suspended arch bridge is introduced.

[0051] The suspender device further includes a connecting cylinder 300 sleeved on the outer periphery of the cable body 110. One end of the connecting cylinder 300 is inserted into the socket hole 210. The other end of the connecting cylinder 300 extends towards the middle of the cable body 110.

[0052] Based on the above embodiments, in another embodiment of the present invention, a suspender device for the main girder of a suspended arch bridge is introduced.

[0053] In order to seal the gap between the connecting cylinder 300 and the cable body 110, the suspender device further includes a heat shrinkable tube 400. One end of the heat shrinkable tube 400 is sleeved on the end of the connecting cylinder 300. The other end of the heat shrinkable tube 400 is sleeved on the cable body 110.

[0054] Furthermore, the suspender device further includes a pipe plug 500. One end of the pipe plug 500 is inserted into the gap between the connecting cylinder 300 and the cable body 110.

[0055] Based on the above embodiments, in another embodiment of the present invention, a suspender device for suspending the main beam of an arch bridge is introduced.

[0056] The anchor 200 further includes an anchor plate 240 and a restraint ring 250. The anchor plate 240 is installed at the maximum cross-sectional end of the socket hole 210. The restraint ring 250 is installed at the minimum cross-sectional end of the socket hole 210.

[0057] Furthermore, a sealing strip is also provided between the pipe plug 500 and the connecting cylinder 300.

[0058] On the other hand, in another embodiment of the present invention, a construction method for suspending the main beam of an arch bridge is introduced. This construction method uses the suspender device described in any one of the above embodiments to suspend the main beam of the arch bridge.

[0059] As Figure 8 shown, the construction steps mainly include: S1. Install the tensioning anchors of all suspender devices at the set positions on the arch rib one by one; S2. Use a cable crane to transport the main beam segment to the design position and connect the fixed anchor of the suspender device to the main beam segment; S3. Install the equipment for tensioning the suspender device in S2 on the arch rib, and tension the main beam segment to the design elevation or make the cable force reach the design initial tension value; S4. Repeat steps S2 and S3 until all main beam segments are hoisted and the beam-end installation of the suspender device is completed; S5. Tension all suspender devices to the design cable force value; S6. Install the auxiliary facilities of the suspender device.

[0060] As Figures 3 to 7 shown, the connection work between the suspender device and the main beam segment includes: First, use the tensioning end anchor cup to hang the suspender device on the arch rib after the construction of the arch rib is completed; Second, synchronously set the fixed end anchor cup to be connected to the main beam segment during the hoisting of the main beam segment, then conduct final tensioning on all suspender devices after the main beams of the whole bridge are closed; Then conduct cable adjustment when the secondary dead load construction is completed, and finally install the auxiliary facilities after the bridge deck alignment and structural internal force meet the design requirements.

[0061] The specific steps are as follows: First, use a cable crane and a chain block to cooperate to hang the hanger device on the arch rib. The detailed steps of the hanging operation are as follows: The first step is to transfer the hanger device to the construction platform through the cable crane, remove the packaging on the hanger device, and bundle the cable of the hanger device with a sling as the lifting point; The second step is to install a traction head on the internal thread of the tension end anchor cup, install a shackle, and connect a 9m long chain block chain; The third step is to set an arch end cable conduit that penetrates the upper and lower parts of the arch rib, thread a cotton rope through the arch end cable conduit and lower it to the construction platform, and connect the other end of the chain block chain; The fourth step is to lower the cable crane sling to the construction platform, and the sling is connected to the sling bundling the hanger device; The fifth step is to slowly lift the cable crane and move it along the bridge direction to transfer the hanger device to the position to be installed, and synchronously recover the cotton rope during the process; The sixth step is to connect the chain block chain to the chain block fixed on the arch rib after the chain block chain passes through the arch end cable conduit, and tighten the chain block chain; The seventh step is as Figure 5 shown, the cable crane assists in adjusting the spatial position of the hanger device, slowly tightens the chain block, lifts the tension end anchor cup upward, and passes through the anchor backing plate of the arch rib. Install a fine adjustment component on the tension end anchor cup, and screw the spherical washer to the anchor backing plate so that the spherical nut abuts against the spherical washer; The eighth step is to remove the connection between the chain block and the cable crane and the hanger device to complete the hanging operation of the hanger device and the arch rib; The ninth step is to repeat the above steps to hang all the hanger devices for hoisting each main beam segment on the arch rib one by one.

[0062] Secondly, synchronously set the fixed end anchor cup of the hanger device to be connected to the main beam segment, that is, hoist a main beam segment, then connect the main beam segment to the fixed end anchor cup of the corresponding hanger device, and then install the next main beam segment. The installation steps are as follows: The first step is to install the tensioning equipment corresponding to the cable number of the hanger device on the arch rib; The second step is to hoist the main beam segment to the designed position by the cable crane, but the elevation is about lower than the height of one main beam segment; The third step is as Figure 6As shown in the figure, beam end cable ducts running through the upper and lower parts are provided on the main beam segments. The fixed end anchor cups of the suspender devices are manually aligned with the beam end cable ducts on the main beam segments. The cable crane lifts the main beam segments, and the suspender devices are inserted into the beam end cable ducts. Fourth step: The cable crane continues to lift the main beam segments. After the preliminary positioning is completed, the construction workers descend to the side bottom end of the main beam segment through the beam end platform to install the upper anchor cup nuts and screw them to the designed positions. Fifth step: Operate the tensioning equipment located on the arch rib, mainly based on the elevation and supplemented by the cable force, to adjust the spatial position of the main beam segment and complete the precise positioning of the main beam segment. Sixth step: The cable crane slowly unloads the force until it is in a non-loaded state. Measure again and adjust the height of the main beam segment to the designed position through the tensioning equipment located on the arch rib, and adjust the cable force of the suspender device to the designed initial tension value. Seventh step: The main beam segment is welded and fixed, the connection between the cable crane and the main beam segment is removed, and the tensioning equipment is transported to and installed at the suspender device corresponding to the next main beam segment to complete the beam end installation construction of the corresponding suspender device. Eighth step: Repeat the above steps to complete the hoisting of all the main beam segments of this bridge and the beam end installation construction of the suspender devices.

[0063] Then, after the closure of all the main beams of the bridge, the final tensioning of the suspender devices is carried out, and the tensioning sequence and cable force values are both carried out according to the monitoring instructions. The steps of the final tensioning are as follows: First step: After the installation of the tensioning equipment is completed, install oil pipes on each jack and connect the oil pump truck. Second step: Start the oil pump truck, and the jacks slowly extend the cylinders synchronously. During the tensioning process, synchronously screw the adjusting screw rods. Third step: When the tensioning reaches the monitoring instruction force value, fully tighten the anchor cup nuts. Fourth step: Remove the tensioning tooling to complete the tensioning construction of two adjacent suspender devices. Fifth step: Repeat the above steps to complete the final tensioning construction of the suspender devices for all the main beam segments of this bridge.

[0064] Then, when the construction of the second-stage permanent load of all the main beams of the bridge is completed, the cable force of the suspender devices is adjusted according to the monitoring instructions based on the deck alignment situation during the construction. The construction of "uniform, in batches, and circular" is adopted to make the deck alignment smooth, the cable forces uniform, and the main beam structure in the best working state. The process of cable force adjustment is basically the same as the construction steps of the final tensioning.

[0065] Finally, after the deck alignment and structural internal forces meet the design requirements, the auxiliary facilities of the suspender devices are installed. The installation steps are as follows: First step: As Figure 7 shown, install high-damping rubber in the gap between the open end of the arch end cable duct and the cable to form a shock absorber built into the arch rib; install high-damping rubber in the gap between the open end of the beam end cable duct and the cable to form a shock absorber built into the main beam segment. Second step: Install a waterproof cover at the upper end of the beam end cable duct to prevent rainwater from entering the beam end cable duct. Third step: Install a protective cover on the tensioning end anchor cup. The protective cover is sleeved on the outer periphery of the fine-tuning component and abuts against the anchor backing plate.

[0066] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

[0067] The above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A hanger device for the main beam of a suspended arch bridge, characterized in that, Comprising: A stay cable (100) provided with a cable body (110); An anchor (200) provided with a socketing hole passage (210) whose axial cross-section gradually narrows and penetrates both ends; Wherein, the anchor (200) is socketed on the cable body (110), the cable body (110) is formed by stranding a plurality of bundles of steel wires, and the end with a smaller cross-section in the socketing hole passage (210) is far from the end of the cable body (110), and the end with a larger cross-section is arranged close to the end of the cable body (110).

2. The hanger device for the main beam of the suspended arch bridge according to claim 1, characterized in that, The anchor (200) includes an anchor cup (220), and the surface of the socketing hole passage (210) is arranged in a conical shape and is located at the center of the anchor cup (220).

3. The hanger device for the main beam of the suspended arch bridge according to claim 2, characterized in that, The anchor cup (220) includes a fixed-end anchor cup (222) and a tensioning-end anchor cup (221) respectively installed at both ends of the cable body (110), and the tensioning-end anchor cup (221) is provided with internal threads at the end with a larger cross-section in the socketing hole passage (210).

4. The hanger device for the main beam of the suspended arch bridge according to any one of claims 1 to 3, characterized in that, The anchor (200) further includes a fine-tuning assembly (230) sleeved on the tensioning-end anchor cup (221) for adjusting and compensating for the stress loss during the construction of the stay cable (100) or correcting the errors occurring during construction.

5. The suspender device for the main beam of the suspended arch bridge according to claim 4, characterized in that, The fine-tuning assembly (230) includes a spherical nut (231) and a spherical washer (232), one end of the spherical nut (231) is provided with a spherical convex surface, and one end of the spherical washer (232) is provided with a spherical concave surface; The outer peripheral wall of the tensioning-end anchor cup (221) is provided with external threads, the spherical nut (231) is connected to the tensioning-end anchor cup (221) through the external threads, and the spherical washer (232) is in sliding contact with the spherical convex surface of the spherical nut (231) through the spherical concave surface.

6. The suspender device for the main beam of the suspended arch bridge according to claim 4, characterized in that, It further includes a connecting cylinder (300) sleeved on the outer periphery of the cable body (110), one end of the connecting cylinder (300) is inserted and connected to the socketing hole passage (210), and the other end of the connecting cylinder (300) extends towards the middle of the cable body (110).

7. The hanger device for the main beam of the suspended arch bridge according to claim 6, characterized in that, It further includes a heat shrinkable tube (400), one end of the heat shrinkable tube (400) is sleeved on the end of the connecting cylinder (300), and the other end of the heat shrinkable tube (400) is sleeved on the cable body (110).

8. The hanger device for the main beam of the suspended arch bridge according to claim 7, characterized in that, It further includes a plug (500), one end of the plug (500) is inserted into the gap between the connecting cylinder (300) and the cable body (110).

9. The hanger device of the main beam of the suspended arch bridge according to claim 2, characterized in that, The anchor (200) further includes an anchor plate (240) and a restraint ring (250), the anchor plate (240) is installed at the maximum cross-section end of the socketing hole passage (210), and the restraint ring (250) is installed at the minimum cross-section end of the socketing hole passage (210).

10. A construction method for the main beam of a suspended arch bridge, characterized in that Adopting the hanger device according to any one of claims 1 to 9, the construction steps include: S1. Install the tensioning anchors of all the hanger devices at the set positions of the arch rib one by one; S2. Use a cable crane to transport the main beam segment to the designed position and connect the fixed anchor of the hanger device to the main beam segment; S3. Install the equipment for tensioning the hanger device in S2 on the arch rib, and tension the main girder segment to the designed elevation or make the cable force reach the designed initial tension value. S4. Repeat steps S2 and S3 until the hoisting of all main girder segments and the installation of the hanger device at the beam ends are completed. S5. Tension all the hanger devices to the designed cable force value. S6. Install the auxiliary facilities of the hanger device.

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