Replaceable bridge anti-drawing inhaul cable device and construction method

Abstract

The invention discloses a replaceable bridge anti-drawing inhaul cable device and a construction method. The device comprises an anti-drawing component, an adjusting assembly and an anchoring component. The adjusting assemblies are arranged at the two ends of the anti-drawing component to limit the anti-drawing component and connected with the anchoring component. The two ends of the anti-drawing component are the fixed end and the non-fixed end respectively, and the non-fixed end is connected with the adjusting assembly through the tensioning end anchor plate and the working clamping piece so that the anti-drawing component can rotate or move. The fixed end is connected with the adjusting assembly through the fixed end anchor plate, the extrusion sleeve and the extrusion spring, so that the anti-drawing component rotates. One end of the anti-drawing component is anchored to the pier, the other end of the anti-drawing component is anchored to the bottom of the bridge, the two ends of the anti-drawing component are limited through the rotating components, rotating space is provided, when the bridge is subjected to external force, a good connection relation is kept between the bridge and the pier, and the bridge is prevented from overturning; and safe operation of the bridge under various environmental conditions is ensured.

Description

Technical Field

[0001] The present invention belongs to the technical field of bridge construction, and more specifically, relates to a replaceable bridge anti-tensile cable device and a construction method. Background Art

[0002] With the rapid advancement of urbanization and the increasingly dense interweaving of railway and highway networks, bridge construction has become an indispensable core component of modern transportation infrastructure construction. As a key engineering facility that carries the lifeline of transportation, the safety performance of bridges is extremely important. Its stability directly affects the smooth operation of the entire transportation system and public safety.

[0003] Especially in bridge construction projects with super-long span designs or located in areas with complex geological structures and frequent seismic activities, an innovative and practical technical means will be applied - installing replaceable bridge anti-tensile cable devices between the bridge superstructure and the lower supporting structure. The innovatively designed replaceable bridge anti-tensile cable device, with its efficient and flexible anti-tensile force adjustment performance, significant adaptability under complex working conditions, convenient installation method and easy maintenance characteristics, can effectively solve the problem of vertical tensile stress generated by various external forces during the long-term use of the bridge, thereby effectively enhancing the overall stability and safety of the bridge, and providing a strong technical guarantee for ensuring the reliability and durability of bridge engineering under extreme conditions.

[0004] The commonly used bridge pull-out limiter has significant limitations in adjusting its pull-out bearing capacity range. Even if the pull-out capacity is fine-tuned, the pull-out limiter often needs to be redesigned. In addition, the replacement of the existing pull-out limiter inevitably involves the overall jacking operation of the bridge, which undoubtedly increases the difficulty of construction and prolongs the construction period, thus exposing obvious deficiencies.

[0005] Therefore, there is an urgent need to develop a replaceable bridge anti-pullout cable device and construction method to address the above-mentioned problems. It should have the ability to flexibly adjust the anti-pullout performance, and can achieve precise adjustment within a small range without large-scale modification design. It should also be able to simplify the replacement process without affecting the overall construction efficiency, effectively shorten the construction period, and thus comprehensively improve the economic benefits and work efficiency of bridge construction and maintenance. Summary of the invention

[0006] In view of the above defects or improvement needs of the prior art, the present invention provides a replaceable bridge anti-pullout cable device and construction method, in which one end of the anti-pullout component is anchored on the pier and the other end is anchored on the bottom of the bridge, and the anti-pullout component is limited by rotating components at both ends, and a rotation space is provided. When the bridge is subjected to external force, a good connection relationship is maintained between the bridge and the pier to prevent the bridge from overturning, thereby ensuring the safe operation of the bridge under various environmental conditions. Moreover, the device is arranged on the side of the pier and is no longer limited by the narrow physical space between the bottom of the beam and the pier top pad stone. It can effectively avoid the installation area of ​​other equipment on the pier top, effectively avoid the formation of operation and maintenance bottlenecks, and facilitate maintenance personnel to perform regular maintenance operations and safety inspections.

[0007] To achieve the above objectives, according to a first aspect of an embodiment of the present invention, a replaceable bridge anti-pullout cable device is provided, comprising an anti-pullout component, an adjustment assembly, and an anchoring component;

[0008] The adjustment components are arranged at both ends of the anti-pullout component to provide position limits for it, and are connected to the anchoring component;

[0009] The two ends of the anti-pullout member are respectively a fixed end and a non-fixed end, and the non-fixed end is connected to the adjustment component through a tension end anchor plate and a working clamp to make the anti-pullout member rotate or move;

[0010] The fixed end is connected with the adjustment assembly through the fixed end anchor plate, the extrusion sleeve and the extrusion spring, so that the anti-pullout component can rotate.

[0011] Furthermore, the anti-pulling member includes a cable body and a steel strand;

[0012] A steel strand is provided inside the cable body, and the steel strand passes through two ends of the cable body;

[0013] A tensioning end anchor plate is provided at one end of the cable body, and the steel strand passes through the tensioning end anchor plate and is clamped by a working clamp;

[0014] A fixed end anchor plate is arranged at the other end of the cable body, and the steel strand passes through the fixed end anchor plate and is clamped by an extrusion sleeve and an extrusion spring.

[0015] Furthermore, the diameters of the two ends of the cable body gradually increase, and serve as a connecting platform, the ends of which are respectively connected to the tensioning end anchor plate and the fixed end anchor plate;

[0016] A fixed end pressure plate is also provided at one end of the fixed end anchor plate away from the cable body, and the fixed end pressure plate is fixedly connected to the fixed end anchor plate via anchor bolts.

[0017] Further, the adjustment assembly at one end of the anti-pullout member includes a rotating member;

[0018] The rotating component comprises a rotating plate, a spherical stainless steel plate, a spherical sliding plate, a spherical sealing member and a rotating bottom plate.

[0019] Furthermore, the rotating plate is a platform with a spherical surface at one end, and its interior is hollowed out, and the shape of the hollowing out is the same as the shape of the connecting platform at both ends of the cable body. The cable body passes through the hollow part of the rotating plate and is connected thereto, and a longitudinal limit is formed by connecting the platform;

[0020] A rotating bottom plate is also provided at one end of the rotating plate close to the spherical surface, and the contact surface between the rotating bottom plate and the rotating plate is a concave spherical surface with a through hole in the middle and connecting holes equidistantly provided on the edge along the circumferential direction;

[0021] After the cable body is connected to the rotating plate, it passes through the through hole in the middle of the rotating bottom plate and rotates on the rotating bottom plate along with the rotating plate;

[0022] A spherical stainless steel plate is fixed on the spherical surface of the rotating plate, a spherical slide plate is fixed on the rotating bottom plate, and the spherical stainless steel plate and the spherical slide plate form a rotating friction pair between the rotating plate and the rotating bottom plate.

[0023] Further, the adjustment assembly at the other end of the anti-pullout member includes a rotating member or a sliding member;

[0024] The sliding component comprises a sliding plate, a plane sliding plate, a plane stainless steel plate, a plane sealing member, a guide sliding plate, a guide stainless steel plate and a sliding bottom plate.

[0025] Furthermore, the sliding plate is a stepped platform, the center of which is hollowed out, and the shape of the hollowing out is the same as the shape of the connecting platforms at both ends of the cable body. The cable body passes through the hollowed out part of the sliding plate and is connected thereto, and a longitudinal limit is formed by the connecting platforms;

[0026] The sliding plate is also provided with a sliding bottom plate at one end away from the connecting platform, and the sliding bottom plate is provided with a flat bottom concave surface at one end in contact with the sliding plate, and a through hole is provided in the middle, and connecting holes are provided at equal intervals along the circumferential direction on the edge;

[0027] After the cable body is connected to the sliding plate, it passes through the through hole in the middle of the sliding bottom plate and slides on the sliding bottom plate along with the sliding plate;

[0028] A flat slide plate is fixed on the sliding plate, a flat stainless steel plate is arranged on the sliding bottom plate, and a sliding friction pair is formed between the flat stainless steel plate and the flat slide plate.

[0029] Furthermore, a guide slide plate is provided on the side of the sliding plate, a guide stainless steel plate is provided at the contact point between the side of the sliding bottom plate and the sliding plate, and a guide friction pair is formed between the guide slide plate and the guide stainless steel plate;

[0030] The sliding plate is also provided with a planar seal at the inner and outer circles of the planar slide plate.

[0031] Further, the anchoring member includes a pier anchoring plate and a bridge anchoring plate;

[0032] The pier anchoring plate includes an embedded plate and a connecting plate, wherein the embedded plate is fixed to the side of the pier and provides support for the pier;

[0033] The connecting plate is fixedly connected to the embedded plate in a horizontal plane, and a reinforcing plate is provided between the two;

[0034] The bridge anchor plate is fixed to the bottom of the bridge, and a gap is left between the bridge and the bridge except for the anchor point.

[0035] According to another aspect of an embodiment of the present invention, a construction method of a replaceable bridge anti-tension cable device is provided, comprising:

[0036] T100, anchor the pier anchor plate to the pre-buried anchor plate on the side of the pier through anchor bolts, and connect the rotating member at one end to the pier anchor plate through anchor bolts;

[0037] T200, pass the steel strand in one end of the cable body through the rotating bottom plate, the rotating plate and the fixed end anchor plate, connect and fix it with the fixed end anchor plate through the extrusion sleeve and the extrusion spring, and connect the fixed end anchor plate with the rotating plate through bolts;

[0038] T300, anchor the bridge anchor plate to the pre-buried anchor plate at the bottom of the bridge through anchor bolts, and connect the rotating member at the other end to the bridge anchor plate through anchor bolts;

[0039] T400, pass the steel strand in the other end of the cable body through the sliding bottom plate, sliding plate and tension end anchor plate at the bridge, and connect and fix it with the tension end anchor plate through the working clip;

[0040] T500. Connect the rotating component protection cover and the sliding component protection cover to the rotating base plate and the sliding base plate respectively through bolts, and install the waterproof protective cover at the connection between the cable body and the pier anchor plate and the bridge anchor plate.

[0041] In general, the above technical solutions conceived by the present invention can achieve the following beneficial effects compared with the prior art:

[0042] 1. The anti-pullout cable device of the present invention has one end of the anti-pullout component anchored on the bridge pier through an anchoring component, and the other end is anchored to the bottom of the bridge through an anchoring component. The anti-pullout component is limited by rotating components at both ends, and a rotating space is provided. When the bridge is subjected to external force, a good connection relationship is maintained between the bridge and the pier to prevent the bridge from overturning, thereby ensuring the safe operation of the bridge under various environmental conditions. The device is arranged on the side of the pier and is no longer limited by the narrow physical space between the bottom of the beam and the pier top pad stone. It can effectively avoid the installation area of ​​other equipment on the pier top, effectively avoid the formation of operation and maintenance bottlenecks, and facilitate maintenance personnel to carry out regular maintenance operations and safety inspections.

[0043] 2. The anti-pullout cable device of the present invention adopts a cable structural component as the core anti-pullout component. The main structural system of the cable is composed of an external cable body and an anchor, and the rigid contact between the anti-pullout functional components is adjusted and designed to be a relatively flexible contact, so that it has better adaptability during the anti-pullout process. The elasticity of the cable can absorb and disperse part of the impact load that may be generated during the anti-pullout process, thereby reducing the damage to the device structure due to severe impact, greatly improving the service life and stability of the anti-pullout device, and ensuring that the device can maintain excellent performance and long-term durability in a long-term and harsh working environment.

[0044] 3. In the anti-pulling cable device of the present invention, the rotating component is composed of a spherical friction pair formed by a convex spherical surface of a rotating plate and a spherical slide plate inlaid on the concave spherical surface of a rotating bottom plate. The rotational displacement requirement of the bridge is met by the sliding of the spherical friction pair. The rotational torque is small and is only related to the spherical radius of the spherical friction pair in the rotating structural component and the friction coefficient of the slide plate. Therefore, as long as the initial sliding friction coefficient between the friction pairs is overcome, rotation can occur. At this time, the size of the rotation angle is independent of the rotation torque, which can meet the design requirements of larger rotation angles and broaden the applicable rotation angle range of the device.

[0045] 4. The anti-pullout cable device of the present invention can adjust the length of the cable within a certain range according to the specific implementation conditions of the project site to meet the implementation requirements of different installation heights, thereby improving the practicality of the device, enhancing its adaptability and convenience in various complex environments, and achieving the dual goals of convenient installation and efficient operation and maintenance.

[0046] 5. When the anti-tensile performance of the anti-tensile cable device of the present invention needs to be fine-tuned, the core tensile components can be independently optimized without affecting the installation process of other structural parts, thereby improving the overall construction efficiency, effectively saving human resources and equipment resource costs, and fully embodying the green construction concept of energy conservation and environmental protection, achieving improved economic and environmental benefits.

[0047] 6. The construction method of the anti-pullout cable device of the present invention is to divide the device into various components and transport them to the construction site for assembly. The corresponding construction method is selected according to the on-site conditions. In the early stage, the structural components of the device in the beam body or at the pier can be pre-installed on the beam body or the pier. When the project site meets the overall installation conditions of the device, the cable structural components of the device are installed to connect the structural components of the device in the beam body and the structural components of the device at the pier to realize the assembly of the device, thereby realizing the efficient assembly of the device in stages and improving the adaptability and efficiency of the construction of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] Figure 1 This is a schematic structural diagram of a replaceable bridge anti-tension cable device according to an embodiment of the present invention;

[0049] Figure 2 This is a structural cross-sectional view of a replaceable bridge anti-tension cable device according to an embodiment of the present invention;

[0050] Figure 3 This is a schematic structural diagram of a fixed end of a replaceable bridge anti-tensile cable device according to an embodiment of the present invention;

[0051] Figure 4 This is a schematic structural diagram of a non-fixed end of a replaceable bridge anti-tensile cable device according to an embodiment of the present invention;

[0052] Figure 5 This is a schematic diagram of the installation of a replaceable bridge anti-tension cable device according to an embodiment of the present invention;

[0053] Figure 6 This is a side view of the installation of a replaceable bridge anti-tension cable device according to an embodiment of the present invention;

[0054] Figure 7 This is a schematic structural diagram of another replaceable bridge anti-tension cable device according to an embodiment of the present invention;

[0055] Figure 8 This is a structural cross-sectional view of another replaceable bridge anti-tension cable device according to an embodiment of the present invention;

[0056] Fig. 9 This is a schematic structural diagram of a non-fixed end of another replaceable bridge anti-tensile cable device according to an embodiment of the present invention;

[0057] Fig.10 This is a schematic diagram of the installation of another replaceable bridge anti-tension cable device according to an embodiment of the present invention;

[0058] Fig.11 This is a side view of the installation of another replaceable bridge anti-tensile cable device according to an embodiment of the present invention.

[0059] In all the drawings, the same figure numbers represent the same technical features, specifically: 1-anti-pullout member, 11-tensioning end anchor plate, 12-working clip, 13-steel strand, 14-waterproof protective cover, 15-cable body, 16-fixed end anchor plate, 17-extrusion sleeve, 18-extrusion spring, 19-fixed end pressure plate, 2-rotating member, 21-rotating plate, 22-spherical stainless steel plate, 23-spherical slide plate, 24-spherical seal, 25-rotating base plate, 3-sliding member, 31-sliding plate, 32-plane slide plate, 33-plane stainless steel plate, 34-plane seal, 35-guide slide plate, 36-guide stainless steel plate, 37-sliding base plate, 4-anchoring member, 41-pier anchor plate, 42-bridge anchor plate, 5-protective member, 51-sliding member protective cover, 52-rotating member protective cover. DETAILED DESCRIPTION

[0060] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0061] Example 1

[0062] like Figure 1-6 As shown, an embodiment of the present invention provides a replaceable bridge anti-pullout cable device, which is used on a simply supported beam, and includes an anti-pullout member 1, a rotating member 2 provided at both ends of the anti-pullout member 1, and an anchoring member 4 provided on the pier and the bridge. One end of the anti-pullout member 1 is anchored on the pier through the anchoring member 4, and the other end is anchored on the bottom of the bridge through the anchoring member 4. The anti-pullout member 1 is then limited by the rotating member 2 at both ends, and a rotation space is provided. When the bridge is subjected to external forces, a good connection relationship is maintained between the bridge and the pier to prevent the bridge from overturning, and to ensure the safe operation of the bridge under various environmental conditions. In addition, the device is arranged on the side of the pier, and is no longer limited by the narrow physical space between the bottom of the beam and the pier top pad stone. It can effectively avoid the installation area of ​​other equipment on the pier top, effectively avoid the formation of operation and maintenance bottlenecks, and facilitate maintenance personnel to perform regular maintenance operations and safety inspections.

[0063] The two ends of the anti-pullout member 1 are respectively a fixed end and a non-fixed end, including a cable body 15, a steel strand 13, a tensioning end anchor plate 11, a working clamp 12, a fixed end anchor plate 16, an extrusion sleeve 17, an extrusion spring 18, and a fixed end pressure plate 19. The cable body 15 is the main force-bearing member of the anti-pullout member 1, and a steel strand 13 is arranged inside it, and the steel strand 13 passes through the two ends of the cable body 15. A tensioning end anchor plate 11 is arranged at one end of the cable body 15, and the steel strand 13 passes through the tensioning end anchor plate 11 and is clamped by the working clamp 12. The tensioning end anchor plate 11 is provided with a plurality of holes, and each bundle of steel strands 13 passes through a hole on the tensioning end anchor plate 11 and is fixed in the hole by the working clamp 12 to prevent it from falling out when subjected to tension. The other end of the cable body 15 is provided with a fixed end anchor plate 16. After the steel strand 13 passes through the fixed end anchor plate 16, it is clamped by a compression sleeve 17 and a compression spring 18. The fixed end anchor plate 16 has a plurality of holes. After each bundle of steel strands 13 passes through a hole on the tension end anchor plate 11, it is fixed in the hole by a compression sleeve 17 and a compression spring 18 to prevent it from slipping out when subjected to tension. After the compression sleeve 17 and the compression spring 18 are sleeved on the end of the steel strand 13, they are squeezed by an extruder to cause the compression sleeve 17 to plastically deform and grip the steel strand 13. The fixed end anchor plate 16 is also provided with a fixed end pressure plate 19 at one end away from the cable body 15, which is fixedly connected to the fixed end anchor plate 16 by an anchor bolt.

[0064] The diameters of the two ends of the cable body 15 gradually increase, and serve as a connecting platform, the ends of which are connected to the tensioning end anchor plate 11 and the fixed end anchor plate 16 respectively.

[0065] The rotating member 2 includes a rotating plate 21, a spherical stainless steel plate 22, a spherical sliding plate 23, a spherical sealing member 24 and a rotating bottom plate 25. The rotating plate 21 is a platform with a spherical surface at one end, and its interior is hollowed out. The shape of the hollowing out is the same as the shape of the connecting platform at both ends of the cable body 15. The cable body 15 passes through the hollowed-out part of the rotating plate 21 and is connected thereto, and a longitudinal limit is formed by the connecting platform. A rotating bottom plate 25 is also provided at one end of the rotating plate 21 close to the spherical surface. The contact surface between the rotating bottom plate 25 and the rotating plate 21 is a concave spherical surface, and a through hole is opened in the middle, and connecting holes are opened at equal intervals along the circumferential direction on the edge. After the cable body 15 is connected to the rotating plate 21, it passes through the through hole in the middle of the rotating bottom plate 25 and rotates on the rotating bottom plate 25 along with the rotating plate 21. A spherical stainless steel plate 22 is fixed on the spherical surface of the rotating plate 21, and a spherical slide plate 23 is fixed on the rotating bottom plate 25. The spherical stainless steel plate 22 and the spherical slide plate 23 form a rotating friction pair between the rotating plate 21 and the rotating bottom plate 25. The rotating friction pair reduces the friction between the two, so that when the bridge is subjected to external force, the anti-pullout member 1 rotates to avoid structural damage caused by torsion force. A spherical seal 24 is also embedded in the rotating bottom plate 25 to prevent external debris including water and dust from entering the rotating friction pair, causing damage to it and affecting the use effect.

[0066] The fixed end pressure plate 19 and the rotating plate 21 are also connected by anchor bolts to prevent the anti-pullout member 1 from falling off between the end close to the fixed end pressure plate 19 and the rotating plate 21, so that it can rotate with the rotating plate 21 when the bridge is subjected to external force but not pulling force, thereby ensuring the normal operation of the device.

[0067] The anchoring member 4 includes a pier anchoring plate 41 provided on the pier and a bridge anchoring plate 42 provided at the bottom of the bridge. The pier anchoring plate 41 includes an embedded plate and a connecting plate. The embedded plate is fixed to the side of the pier and supported by the pier. The connecting plate is fixedly connected to the embedded plate in a horizontal plane, and a reinforcing plate is provided between the two. The bridge anchoring plate 42 is fixed to the bottom of the bridge, and a gap is left between it and the bridge except for the anchoring point.

[0068] The rotating member 2 at one end of the cable body 15 is fixedly connected to the connecting plate of the pier anchor plate 41 through the rotating bottom plate 25 by bolts, and the rotating member 2 at the other end is fixedly connected to the bridge anchor plate 42 through the rotating bottom plate 25. And this device is set on both sides of each pier to achieve the longitudinal connection between the bridge and the pier, so that the bridge always maintains connection with the pier when subjected to pulling force, preventing the bridge from overturning and affecting the normal use safety of the bridge. At the same time, during use, it does not affect the connection between the bearings between the bridge and the pier, ensuring that the original vibration reduction and recovery capabilities of the bridge are not affected.

[0069] The anti-pulling member 1 further includes a waterproof protective cover 14, which is sleeved on both ends of the cable body 15 and is located at the connection between the cable body 15 and the bridge pier anchor plate 41 and the cable body 15 and the bridge anchor plate 42. The waterproof protective cover 14 is a corrugated tube structure made of waterproof material including rubber, and its two ends are frictionally connected with the cable body 15 to provide waterproofing for the connection between its two ends and the anchor member 4.

[0070] The device further comprises a protection member 5, wherein the protection member 5 comprises a rotating member protection cover 52, which is sleeved around the rotating base plate 25 and wraps the internal structure thereof to protect the internal structure.

[0071] Example 2

[0072] like Figure 7-11As shown, the embodiment of the present invention provides another replaceable bridge anti-pullout cable device, which is used on a continuous beam, and includes an anti-pullout member 1, a rotating member 2 provided at one end of the anti-pullout member 1, a sliding member 3 provided at the other end of the anti-pullout member 1, and an anchoring member 4 provided on the pier and the bridge. One end of the anti-pullout member 1 is anchored on the pier through the anchoring member 4, and the other end is anchored on the bottom of the bridge through the anchoring member 4. The anti-pullout member 1 is then limited at both ends by the rotating member 2 and the sliding member 3, and a rotation and sliding space is provided. When the bridge is subjected to external force, a good connection relationship is maintained between the bridge and the pier to prevent the bridge from overturning, and to ensure the safe operation of the bridge under various environmental conditions. In addition, the device is arranged on the side of the pier, and is no longer limited by the narrow physical space between the bottom of the beam and the pier top pad stone. It can effectively avoid the installation area of ​​other equipment on the pier top, effectively avoid the formation of operation and maintenance bottlenecks, and facilitate maintenance personnel to perform regular maintenance operations and safety inspections.

[0073] The anti-pullout member 1 comprises a cable body 15, a steel strand 13, a tensioning end anchor plate 11, a working clamp 12, a fixed end anchor plate 16, an extrusion sleeve 17 and an extrusion spring 18, and a fixed end pressure plate 19. The cable body 15 is the main force-bearing member of the anti-pullout member 1, and a steel strand 13 is arranged inside the cable body 15, and the steel strand 13 passes through both ends of the cable body 15. A tensioning end anchor plate 11 is arranged at one end of the cable body 15, and the steel strand 13 passes through the tensioning end anchor plate 11 and is clamped by the working clamp 12, and a plurality of holes are opened on the tensioning end anchor plate 11, and each bundle of steel strands 13 passes through a hole on the tensioning end anchor plate 11 and is fixed in the hole by the working clamp 12 to prevent it from coming out when subjected to tension. The other end of the cable body 15 is provided with a fixed end anchor plate 16. After the steel strand 13 passes through the fixed end anchor plate 16, it is clamped by a compression sleeve 17 and a compression spring 18. The fixed end anchor plate 16 has a plurality of holes. After each bundle of steel strands 13 passes through a hole on the tension end anchor plate 11, it is fixed in the hole by a compression sleeve 17 and a compression spring 18 to prevent it from slipping out when subjected to tension. After the compression sleeve 17 and the compression spring 18 are sleeved on the end of the steel strand 13, they are squeezed by an extruder to cause the compression sleeve 17 to plastically deform and grip the steel strand 13. The fixed end anchor plate 16 is also provided with a fixed end pressure plate 19 at one end away from the cable body 15, which is fixedly connected to the fixed end anchor plate 16 by an anchor bolt.

[0074] The diameters of the two ends of the cable body 15 gradually increase, and serve as a connecting platform, the ends of which are connected to the tensioning end anchor plate 11 and the fixed end anchor plate 16 respectively.

[0075] The rotating member 2 includes a rotating plate 21, a spherical stainless steel plate 22, a spherical sliding plate 23, a spherical sealing member 24 and a rotating bottom plate 25. The rotating plate 21 is a platform with a spherical surface at one end, and its interior is hollowed out. The shape of the hollowing out is the same as the shape of the connecting platform at both ends of the cable body 15. The cable body 15 passes through the hollowed-out part of the rotating plate 21 and is connected thereto, and a longitudinal limit is formed by the connecting platform. A rotating bottom plate 25 is also provided at one end of the rotating plate 21 close to the spherical surface. The contact surface between the rotating bottom plate 25 and the rotating plate 21 is a concave spherical surface, and a through hole is opened in the middle, and connecting holes are opened at equal intervals along the circumferential direction on the edge. After the cable body 15 is connected to the rotating plate 21, it passes through the through hole in the middle of the rotating bottom plate 25 and rotates on the rotating bottom plate 25 along with the rotating plate 21. A spherical stainless steel plate 22 is fixed on the spherical surface of the rotating plate 21, and a spherical slide plate 23 is fixed on the rotating bottom plate 25. The spherical stainless steel plate 22 and the spherical slide plate 23 form a rotating friction pair between the rotating plate 21 and the rotating bottom plate 25. The rotating friction pair reduces the friction between the two, so that when the bridge is subjected to external force, the anti-pullout member 1 rotates to avoid structural damage caused by torsion force. A spherical seal 24 is also embedded in the rotating bottom plate 25 to prevent external debris including water and dust from entering the rotating friction pair, causing damage to it and affecting the use effect.

[0076] The fixed end pressure plate 19 and the rotating plate 21 are also connected by anchor bolts to prevent the anti-pullout member 1 from falling off between the end close to the fixed end pressure plate 19 and the rotating plate 21, so that it can rotate with the rotating plate 21 when the bridge is subjected to external force but not pulling force, thereby ensuring the normal operation of the device.

[0077] The sliding member 3 includes a sliding plate 31, a flat slide plate 32, a flat stainless steel plate 33, a flat seal 34, a guide slide plate 35, a guide stainless steel plate 36, and a sliding bottom plate 37. The sliding plate 31 is a stepped platform, the center of which is hollowed out. The shape of the hollowing out is the same as the shape of the connecting platform at both ends of the cable body 15. The cable body 15 passes through the hollowed-out part of the sliding plate 31 and is connected thereto, and a longitudinal limit is formed by the connecting platform. A sliding bottom plate 37 is also provided at one end of the sliding plate 31 away from the connecting platform. The end of the sliding bottom plate 37 in contact with the sliding plate 31 is a flat bottom concave surface, and a through hole is opened in the middle, and connecting holes are opened at equal distances along the circumferential direction on the edge. After the cable body 15 is connected to the sliding plate 31, it passes through the through hole in the middle of the sliding bottom plate 37 and slides on the sliding bottom plate 37 along with the sliding plate 31. A flat slide plate 32 is fixed on the sliding plate 31, and a flat stainless steel plate 33 is provided on the sliding bottom plate 37. A sliding friction pair is formed between the flat stainless steel plate 33 and the flat slide plate 32. The sliding friction pair reduces the friction between the two, so that when the bridge moves under external force, it does not produce shear force against the pull member 1, thereby avoiding structural damage. A guide slide plate 35 is provided on the side of the sliding plate 31, and a guide stainless steel plate 36 is provided at the contact point between the side of the sliding bottom plate 37 and the sliding plate 31. A guide friction pair is formed between the guide slide plate 35 and the guide stainless steel plate 36, so that when the bridge moves, the sliding plate 31 slides along the guide friction pair in the sliding bottom plate 37 to avoid jamming. A flat seal 34 is also provided on the sliding plate 31 at the inner and outer circles of the flat slide plate 32 to prevent external debris including water and dust from entering the sliding friction pair, causing damage to it and affecting the use effect.

[0078] The anchoring member 4 includes a pier anchoring plate 41 provided on the pier and a bridge anchoring plate 42 provided at the bottom of the bridge. The pier anchoring plate 41 includes an embedded plate and a connecting plate. The embedded plate is fixed to the side of the pier and supported by the pier. The connecting plate is fixedly connected to the embedded plate in a horizontal plane, and a reinforcing plate is provided between the two. The bridge anchoring plate 42 is fixed to the bottom of the bridge, and a gap is left between it and the bridge except for the anchoring point.

[0079] The rotating member 2 at one end of the cable body 15 is fixedly connected to the connecting plate of the pier anchor plate 41 through the rotating bottom plate 25 by bolts, and the sliding member 3 at the other end is fixedly connected to the bridge anchor plate 42 through the sliding bottom plate 37. And this device is set on both sides of each pier to achieve the longitudinal connection between the bridge and the pier, so that the bridge always maintains connection with the pier when subjected to pulling force, preventing the bridge from overturning and affecting the normal use safety of the bridge. At the same time, during use, it does not affect the connection between the bridge and the pier, ensuring that the original vibration reduction and recovery capacity of the bridge is not affected.

[0080] The anti-pulling member 1 further includes a waterproof protective cover 14, which is sleeved on both ends of the cable body 15 and is located at the connection between the cable body 15 and the bridge pier anchor plate 41 and the cable body 15 and the bridge anchor plate 42. The waterproof protective cover 14 is a corrugated tube structure made of waterproof material including rubber, and its two ends are frictionally connected with the cable body 15 to provide waterproofing for the connection between its two ends and the anchor member 4.

[0081] The device further includes a protective member 5, which includes a sliding member protective cover 51 and a rotating member protective cover 52. The rotating member protective cover 52 is sleeved around the rotating base plate 25, wrapping its internal structure therein to protect the internal structure. The sliding member protective cover 51 is sleeved around the sliding member 3, wrapping its internal structure therein.

[0082] Preferably, the spherical stainless steel plate 22 is made of any one of a stainless steel plate, a nickel-phosphorus alloy coating, and a ceramic coating.

[0083] Preferably, the spherical sliding plate 23 is made of modified ultra-high molecular weight polyethylene, modified polytetrafluoroethylene, ultra-high performance polytetrafluoroethylene plate or polytetrafluoroethylene plate wear-resistant material.

[0084] Preferably, the spherical seal 24 is made of modified ultra-high molecular weight polyethylene, modified polytetrafluoroethylene, ultra-high performance polytetrafluoroethylene plate or polytetrafluoroethylene plate wear-resistant material.

[0085] Preferably, the flat slide plate 32 is made of modified ultra-high molecular weight polyethylene, modified polytetrafluoroethylene, ultra-high performance polytetrafluoroethylene plate or polytetrafluoroethylene plate wear-resistant material.

[0086] Preferably, the planar seal 34 is made of modified ultra-high molecular weight polyethylene, modified polytetrafluoroethylene, ultra-high performance polytetrafluoroethylene plate or polytetrafluoroethylene plate wear-resistant material.

[0087] Preferably, the guide slide plate 35 is made of modified ultra-high molecular weight polyethylene, modified polytetrafluoroethylene, ultra-high performance polytetrafluoroethylene plate or polytetrafluoroethylene plate wear-resistant material.

[0088] The core anti-pullout component in the device adopts a cable design, and the rigid contact between the anti-pullout functional components is adjusted to a relatively flexible contact. The elasticity of the cable can absorb and disperse part of the impact load that may be generated in the anti-pullout process, thereby reducing the damage to the device due to severe impact, greatly improving the service life and stability of the anti-pullout device, and ensuring that the device can maintain excellent performance and durability in long-term and harsh working environments; by adjusting the number of cable bodies in the cable structural components or the ratio of steel strands in the cable body, the carrying capacity of the entire cable can be adjusted, and the anti-pullout performance can be accurately and efficiently adjusted within a specific anti-pullout performance range without replacing the overall anti-pullout limit device, which subverts the limitation of the traditional bridge anti-pullout limit device that cannot adjust performance. While ensuring structural stability and safety, it is no longer subject to preset performance, and can achieve on-demand dynamic adjustment to meet diverse usage needs, thereby demonstrating efficient and flexible performance advantages. A spherical friction pair is formed by a spherical slide plate inlaid on the convex spherical surface of the rotating plate and the concave spherical surface of the rotating base plate in the rotating structural component. The rotational displacement requirements of the bridge are met by the sliding of the spherical friction pair. Its rotational torque is small and is only related to the spherical radius of the spherical friction pair in the rotating structural component and the friction coefficient of the slide plate. Therefore, as long as the initial sliding friction coefficient between the friction pairs is overcome, rotation can occur. At this time, the size of the rotation angle has nothing to do with the rotation torque, which can meet the design requirements of larger rotation angles and broaden the applicable rotation angle range of the device; the anti-pullout cable device realizes the concept of "unrestricted installation position". Unlike the fixed-position installation layout of conventional devices, it is no longer limited by the narrow physical space between the bottom of the beam and the pier top pad stone. It can be installed on the transverse or longitudinal side of the pier, and can effectively avoid the installation area of ​​other equipment on the pier top. The diversity of the installation position of the device can meet different engineering design requirements, effectively avoid the formation of operation and maintenance bottlenecks, and facilitate maintenance personnel to perform regular maintenance operations and safety inspections; optimize the anti-pullout performance of the bridge, optimize the implementation plan of the anti-pullout device, optimize the construction method of the anti-pullout device, improve the overall construction efficiency of the project, effectively save human resources and equipment resource costs, and fully embody the green construction concept of energy conservation and environmental protection. It has significant economic and social benefits and can be widely used in the anti-pullout reinforcement of bridges.

[0089] Example 3

[0090] The embodiment of the present invention provides an integral assembly construction method of a replaceable bridge anti-tension cable device, which is used on a simply supported beam and includes the following steps:

[0091] S100, anchoring the pier anchor plate 41 to the anchor plate pre-buried on the side of the pier by means of anchor bolts, and connecting the rotating member 2 at one end to the pier anchor plate 41 by means of anchor bolts;

[0092] S200, passing the steel strand 13 in the cable body 15 at one end through the rotating bottom plate 25, the rotating plate 21 and the fixed end anchor plate 16, connecting and fixing it to the fixed end anchor plate 16 through the extrusion sleeve 17 and the extrusion spring 18, and connecting the fixed end anchor plate 16 to the rotating plate 21 through bolts;

[0093] S300, anchoring the bridge anchor plate 42 to the anchor plate pre-buried at the bottom of the bridge by means of anchor bolts, and connecting the rotating member 2 at the other end to the bridge anchor plate 42 by means of anchor bolts;

[0094] S400, passing the steel strand 13 in the other end cable body 15 through the rotating bottom plate 25, the rotating plate 21 and the fixed end anchor plate 16 at the bridge, and connecting and fixing it to the fixed end anchor plate 16 through the working clamp 12;

[0095] S500 , connecting the rotating component protective covers 52 at both ends to the rotating bottom plates 25 at both ends by means of bolts, and installing the waterproof protective cover 14 at the connection between the cable body 15 and the pier anchor plates 41 and the bridge anchor plates 42 .

[0096] Example 4

[0097] The embodiment of the present invention provides another integral assembly construction method of a replaceable bridge anti-tension cable device, which is used on a continuous beam and includes the following steps:

[0098] T100, anchoring the pier anchor plate 41 to the anchor plate pre-buried on the side of the pier by means of anchor bolts, and connecting the rotating member 2 at one end to the pier anchor plate 41 by means of anchor bolts;

[0099] T200, pass the steel strand 13 in the cable body 15 at one end through the rotating bottom plate 25, the rotating plate 21 and the fixed end anchor plate 16, connect and fix it with the fixed end anchor plate 16 through the extrusion sleeve 17 and the extrusion spring 18, and connect the fixed end anchor plate 16 with the rotating plate 21 through bolts;

[0100] T300, anchoring the bridge anchor plate 42 to the anchor plate pre-buried at the bottom of the bridge by means of anchor bolts, and connecting the rotating member 2 at the other end to the bridge anchor plate 42 by means of anchor bolts;

[0101] T400, pass the steel strand 13 in the other end cable body 15 through the sliding bottom plate 37, the sliding plate 31 and the tensioning end anchor plate 11 at the bridge, and connect and fix it to the tensioning end anchor plate 11 through the working clamp 12;

[0102] T500. Connect the rotating component protective cover 52 and the sliding component protective cover 51 to the rotating base plate 25 and the sliding base plate 37 respectively through bolts, and install the waterproof protective cover 14 at the connection between the cable body 15 and the pier anchor plate 41 and the bridge anchor plate 42.

[0103] Example 5

[0104] The embodiment of the present invention provides a staged assembly construction method of a replaceable bridge anti-tension cable device, which is used on a simply supported beam and includes the following steps:

[0105] D100, anchoring the pier anchor plate 41 to the anchor plate pre-buried on the side of the pier by means of anchor bolts, and anchoring the bridge anchor plate 42 to the anchor plate pre-buried on the bottom of the bridge by means of anchor bolts;

[0106] D200, connecting the rotating member 2 at one end to the bridge pier anchor plate 41 through anchor bolts, and connecting the rotating member 2 at the other end to the bridge anchor plate 42 through anchor bolts;

[0107] D300, pass the steel strand 13 in the cable body 15 at one end through the rotating bottom plate 25, the rotating plate 21 and the fixed end anchor plate 16, connect and fix it with the fixed end anchor plate 16 through the extrusion sleeve 17 and the extrusion spring 18, and connect the fixed end anchor plate 16 with the rotating plate 21 through bolts;

[0108] D400, connect the rotating member protective cover 52 to the rotating base plate 25 of which one end has been connected by bolts;

[0109] D500, pass the steel strand 13 in the other end cable body 15 through the rotating bottom plate 25, the rotating plate 21 and the fixed end anchor plate 16 at the bridge, and connect and fix it to the fixed end anchor plate 16 through the working clamp 12;

[0110] D600, connect the rotating component protection cover 52 to the rotating base plate 25 at the other end through bolts, and install the waterproof protective cover 14 at the connection between the cable body 15 and the pier anchor plate 41 and the bridge anchor plate 42.

[0111] Example 6

[0112] The embodiment of the present invention provides a staged assembly construction method of a replaceable bridge anti-tension cable device, which is used on a simply supported beam and includes the following steps:

[0113] R100, anchor the pier anchor plate 41 to the anchor plate pre-buried on the side of the pier by means of anchor bolts, and anchor the bridge anchor plate 42 to the anchor plate pre-buried on the bottom of the bridge by means of anchor bolts;

[0114] R200, connect the rotating member 2 at one end to the bridge pier anchor plate 41 through anchor bolts, and connect the sliding member 3 at the other end to the bridge anchor plate 42 through anchor bolts;

[0115] R300, pass the steel strand 13 in the cable body 15 at one end through the rotating bottom plate 25, the rotating plate 21 and the fixed end anchor plate 16, connect and fix it with the fixed end anchor plate 16 through the extrusion sleeve 17 and the extrusion spring 18, and connect the fixed end anchor plate 16 with the rotating plate 21 through bolts;

[0116] R400, connect the rotating member protective cover 52 to the rotating base plate 25 which has been connected at one end by bolts;

[0117] R500, pass the steel strand 13 in the other end cable body 15 through the sliding bottom plate 37, the sliding plate 31 and the tensioning end anchor plate 11 at the bridge, and connect and fix it to the tensioning end anchor plate 11 through the working clamp 12;

[0118] R600. Connect the sliding component protective cover 51 to the sliding bottom plate 37 at the other end through bolts, and install the waterproof protective cover 14 at the connection between the cable body 15 and the pier anchor plate 41 and the bridge anchor plate 42.

[0119] It will be easily understood by those skilled in the art that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A replaceable bridge anti-tensile cable device, characterized in that: It comprises an anti-pulling component (1), an adjustment component and an anchoring component (4); The adjustment components are arranged at both ends of the anti-pulling component (1) to limit the position of the anti-pulling component, and are connected to the anchoring component (4); The two ends of the anti-pulling component (1) are respectively a fixed end and a non-fixed end, and the non-fixed end is connected to the adjustment component through a tensioning end anchor plate (11) and a working clamp (12), so that the anti-pulling component (1) can be rotated or moved; The fixed end is connected to the adjustment assembly via a fixed end anchor plate (16), a compression sleeve (17) and a compression spring (18), so that the anti-pullout component (1) can be rotated.

2. A replaceable bridge anti-tensile cable device according to claim 1, characterized in that: The anti-pulling component (1) comprises a cable body (15) and a steel strand (13); A steel strand (13) is provided inside the cable body (15), and the steel strand (13) passes through two ends of the cable body (15); A tensioning end anchor plate (11) is provided at one end of the cable body (15); the steel strand (13) passes through the tensioning end anchor plate (11) and is clamped by a working clamp (12); The other end of the cable body (15) is provided with a fixed end anchor plate (16), and the steel strand (13) passes through the fixed end anchor plate (16) and is clamped by a compression sleeve (17) and a compression spring (18).

3. A replaceable bridge anti-tensile cable device according to claim 2, characterized in that: The diameters of the two ends of the cable body (15) gradually increase, and serve as a connecting platform, the ends of which are respectively connected to the tensioning end anchor plate (11) and the fixed end anchor plate (16); A fixed end pressure plate (19) is also provided at one end of the fixed end anchor plate (16) away from the cable body (15), and is fixedly connected to the fixed end anchor plate (16) via anchor bolts.

4. A replaceable bridge anti-tensile cable device according to claim 3, characterized in that: The adjustment assembly at one end of the anti-pulling member (1) comprises a rotating member (2); The rotating component (2) comprises a rotating plate (21), a spherical stainless steel plate (22), a spherical sliding plate (23), a spherical sealing element (24) and a rotating bottom plate (25).

5. A replaceable bridge anti-tensile cable device according to claim 4, characterized in that: The rotating plate (21) is a platform with a spherical surface at one end, and its interior is hollowed out. The hollowed-out shape is the same as the shape of the connecting platform at both ends of the cable body (15). The cable body (15) passes through the hollowed-out part of the rotating plate (21) and is connected thereto, and a longitudinal limit is formed by the connecting platform. A rotating bottom plate (25) is also provided at one end of the rotating plate (21) close to the spherical surface. The contact surface between the rotating bottom plate (25) and the rotating plate (21) is a concave spherical surface with a through hole in the middle and connecting holes equidistantly provided on the edge along the circumferential direction. After the cable body (15) is connected to the rotating plate (21), it passes through the through hole in the middle of the rotating bottom plate (25) and rotates on the rotating bottom plate (25) along with the rotating plate (21); A spherical stainless steel plate (22) is fixed on the spherical surface of the rotating plate (21), a spherical slide plate (23) is fixed on the rotating bottom plate (25), and the spherical stainless steel plate (22) and the spherical slide plate (23) form a rotating friction pair between the rotating plate (21) and the rotating bottom plate (25).

6. A replaceable bridge anti-tensile cable device according to claim 3, characterized in that: The adjustment component at the other end of the anti-pulling component (1) comprises a rotating component (2) or a sliding component (3); The sliding component (3) comprises a sliding plate (31), a flat sliding plate (32), a flat stainless steel plate (33), a flat sealing member (34), a guide sliding plate (35), a guide stainless steel plate (36) and a sliding bottom plate (37).

7. A replaceable bridge anti-tensile cable device according to claim 6, characterized in that: The sliding plate (31) is a stepped platform, the center part of which is hollowed out, and the shape of the hollowing out is the same as the shape of the connecting platforms at both ends of the cable body (15). The cable body (15) passes through the hollowed out part of the sliding plate (31) and is connected thereto, and a longitudinal limit is formed by the connecting platforms; The sliding plate (31) is also provided with a sliding bottom plate (37) at one end away from the connecting platform. The end of the sliding bottom plate (37) in contact with the sliding plate (31) is a flat-bottomed concave surface with a through hole in the middle and connecting holes equidistantly provided at the edge along the circumferential direction. After the cable body (15) is connected to the sliding plate (31), it passes through the through hole in the middle of the sliding bottom plate (37) and slides on the sliding bottom plate (37) along with the sliding plate (31); A flat slide plate (32) is fixed on the sliding plate (31), a flat stainless steel plate (33) is provided on the sliding bottom plate (37), and a sliding friction pair is formed between the flat stainless steel plate (33) and the flat slide plate (32).

8. A replaceable bridge anti-tensile cable device according to claim 7, characterized in that: A guide slide plate (35) is provided on the side of the sliding plate (31), and a guide stainless steel plate (36) is provided at the contact point between the side of the sliding bottom plate (37) and the sliding plate (31), and a guide friction pair is formed between the guide slide plate (35) and the guide stainless steel plate (36); The sliding plate (31) is also provided with a planar sealing member (34) at the inner and outer circles of the planar sliding plate (32).

9. A replaceable bridge anti-tensile cable device according to any one of claims 1 to 8, characterized in that: The anchoring member (4) comprises a pier anchoring plate (41) and a bridge anchoring plate (42); The pier anchoring plate (41) comprises an embedded plate and a connecting plate, wherein the embedded plate is fixed to the side of the pier and provides support for the pier; The connecting plate is fixedly connected to the embedded plate in a horizontal plane, and a reinforcing plate is provided between the two; The bridge anchoring plate (42) is fixed to the bottom of the bridge, and a gap is left between the bridge and the bridge except for the anchoring point.

10. A construction method for a replaceable bridge anti-tensile cable device according to any one of claims 1 to 9, characterized in that: include: T100, anchoring the pier anchor plate (41) to the anchor plate pre-buried on the side of the pier by means of anchor bolts, and connecting the rotating member (2) at one end to the pier anchor plate (41) by means of anchor bolts; T200, passing the steel strand (13) in the cable body (15) at one end through the rotating bottom plate (25), the rotating plate (21) and the fixed end anchor plate (16), connecting and fixing the steel strand (13) with the fixed end anchor plate (16) by means of the compression sleeve (17) and the compression spring (18), and connecting the fixed end anchor plate (16) with the rotating plate (21) by means of bolts; T300, anchoring the bridge anchor plate (42) to the anchor plate pre-buried at the bottom of the bridge by means of anchor bolts, and connecting the rotating member (2) at the other end to the bridge anchor plate (42) by means of anchor bolts; T400, passing the steel strand (13) in the other end cable body (15) through the sliding base plate (37), the sliding plate (31) and the tensioning end anchor plate (11) at the bridge, and connecting and fixing it to the tensioning end anchor plate (11) through the working clamp (12); T500, the rotating component protection cover (52) and the sliding component protection cover (51) are respectively connected to the rotating base plate (25) and the sliding base plate (37) by bolts, and the waterproof protective cover (14) is installed at the connection between the cable body (15) and the pier anchor plate (41) and the bridge anchor plate (42).

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