Basin type support for bridge
By using screw fixing and PTFE sliding plate combined with rigid and elastic connecting strips in the bridge pot bearing, the problem of connection instability of pot bearing during horizontal sliding of the bridge is solved, and better shock absorption effect and bridge stability are achieved.
Patent Information
- Application Number
- CN202423169343.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-20
- Publication Date
- 2026-01-09
- Estimated Expiration
- 2034-12-20
AI Technical Summary
When existing pot bearings slide horizontally on bridges, the rubber blocks and PTFE sliding plates are prone to excessive compression and wear, and the connecting bolts are prone to loosening, resulting in unstable bridge structure and reduced vibration reduction effect.
The lower and upper seat plates are fixed with screws, combined with PTFE sliding plates and rigid and elastic connecting strips, and connected by fixing components to enhance connection stability. Ultra-high molecular weight polyethylene material and aluminum alloy elastic rope are used for cushioning and shock absorption.
It improves the connection stability between the upper and lower seat plates, enhances the vibration reduction effect of the bridge, and ensures the safety and stability of the bridge under horizontal displacement and vertical load.
Smart Images
Figure CN223780700U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the technical field of pot bearing, especially relates to a pot bearing for bridge. BACKGROUND
[0002] In bridge engineering, the support is a key component for connecting the upper structure and the lower foundation of the bridge, and its performance directly affects the safety and stability of the bridge, and the pot bearing is a new type of bridge bearing which is combined by steel components and rubber. The structure mainly comprises an upper seat plate, a lower seat plate, a steel pot, a rubber block, a polytetrafluoroethylene slide plate and the like. The working principle of the pot bearing is to realize the rotation of the upper structure through the fluid properties of the elastic rubber block in the semi-closed steel pot cavity under the three-way stress state. Meanwhile, the horizontal displacement of the upper structure is realized by the low friction coefficient between the polytetrafluoroethylene plate on the intermediate steel plate and the stainless steel plate on the upper seat plate. Through accurate installation and adjustment, the pot bearing can ensure that the displacement of the bridge in the vertical and horizontal directions is reasonably controlled, effectively cope with the influence of natural disasters such as earthquakes and wind loads, and provide protection for the safe passage of the bridge.
[0003] The current pot bearing buffers and absorbs the impact force transmitted by the bridge through the rubber block in the steel pot. When the upper seat plate and the lower seat plate of the pot bearing have a large rotation angle during the horizontal sliding of the bridge, the rubber block or the polytetrafluoroethylene slide plate is subjected to excessive extrusion or wear, and the bolts on the connecting piece connecting the upper seat plate and the lower seat plate are easily subjected to force vibration, thereby causing the bolts to slip, the connecting piece to loosen, the upper seat plate and the lower seat plate to be unstable, the loosened connecting piece to be unable to effectively transmit and disperse the vibration energy, and the bridge structure to be subjected to greater impact, thereby reducing the damping effect. UTILITY MODEL CONTENTS
[0004] The utility model aims at providing a pot bearing for bridge, improving the stability of the connection between the upper seat plate and the lower seat plate, and ensuring the damping effect of the bearing.
[0005] The pot bearing for bridge comprises a lower seat plate and an upper seat plate which are arranged in a vertical direction, a plurality of threaded holes are formed in the lower seat plate and the upper seat plate, and a plurality of screws are arranged in the threaded holes to fix the lower seat plate and the upper seat plate to the pier and the bridge respectively. A steel pot is arranged on the top of the lower seat plate, a rubber block is arranged at the bottom of the steel pot, an intermediate plate is arranged on the rubber block, a ball core is arranged on the intermediate plate, a steel plate is arranged on the upper seat plate and fixed to the ball core, an upper polytetrafluoroethylene slide plate is arranged between the steel plate and the ball core, a lower polytetrafluoroethylene slide plate is arranged between the ball core and the intermediate plate, the side walls of the lower seat plate and the upper seat plate are connected by a plurality of elastic connecting strips, a plurality of rigid connecting strips are arranged on one side of the elastic connecting strips, and the rigid connecting strips connect the lower seat plate and the upper seat plate through a fixing assembly.
[0006] Further, the fixing assembly comprises two fixing plates fixed on the side wall of the upper seat plate, a clamping plate in a 'Fang' shaped structure is hinged between the fixing plates, a clamping groove for clamping the clamping plate is formed on the outer side wall of one side of the rigid connecting strip, a threaded hole is formed on the side wall of the upper seat plate, a bolt is arranged in the threaded hole, and the bolt is threadedly connected with the threaded hole in sequence through the clamping plate and the rigid connecting strip, and the other side of the rigid connecting strip is hinged to the side wall of the lower seat plate through a hinge shaft.
[0007] Further, the upper seat plate is provided with two symmetrical limiting plates at the bottom.
[0008] Further, the outer side wall of the steel basin is provided with a limiting ring, and the outer side wall of the limiting ring is in contact with the inner side wall of the limiting plate.
[0009] Further, the displacement sensor is mounted on the lower seat plate.
[0010] Further, the rigid connecting strip is made of ultra-high molecular weight polyethylene material.
[0011] Further, the elastic connecting strip is made of aluminum alloy elastic rope.
[0012] Compared with the prior art, the utility model has the following beneficial effects:
[0013] The utility model discloses a bridge bearing, which comprises a lower seat plate, a steel basin, a rubber block, a middle plate, a lower side polytetrafluoroethylene slide plate, a ball core, a hinge shaft, a rigid connecting strip, a displacement sensor, an elastic connecting strip, a bolt, a clamping plate, a fixing plate, an upper seat plate, a steel plate, an upper side polytetrafluoroethylene slide plate, a limiting plate and a screw. BRIEF DESCRIPTION OF DRAWINGS
[0014] Figure 1 It is a structural schematic view of the utility model;
[0015] Figure 2 It is a perspective view of the utility model;
[0016] Figure 3 It is an explosion view of the utility model;
[0017] Names of components in the drawing: 1, lower seat plate; 2, steel basin; 3, rubber block; 4, middle plate; 5, lower side polytetrafluoroethylene slide plate; 6, ball core; 7, hinge shaft; 8, rigid connecting strip; 9, displacement sensor; 10, elastic connecting strip; 11, bolt; 12, clamping plate; 13, fixing plate; 14, upper seat plate; 15, steel plate; 16, upper side polytetrafluoroethylene slide plate; 17, limiting plate; 18, screw; 19, limiting ring. DETAILED DESCRIPTION
[0018] The utility model makes further illustration through specific embodiment in combination with drawings, but is not used to limit the utility model, any modification, equivalent replacement, improvement etc. that is made within the spirit and principle of the utility model should be included in the protection scope of the utility model.
[0019] Embodiment
[0020] The pot support for bridge described in the embodiment, as shown in Figure 1 、 Figure 2 and Figure 3 , including the lower seat plate 1 and upper seat plate 14 distributed up and down, the lower seat plate 1 and upper seat plate 14 are all provided with a plurality of threaded holes, the threaded hole is all provided with the screw 18 for fixing the lower seat plate 1 and upper seat plate 14 respectively in the bridge pier and bridge, the lower seat plate 1 top is provided with steel basin 2, the rubber block 3 is provided in the steel basin 2 bottom, the rubber block 3 is provided with the middle plate 4, the middle plate 4 is provided with the ball core 6, the steel plate 15 fixed in the upper seat plate 14 bottom is provided above the ball core 6, the upper side polytetrafluoroethylene slide plate 16 is provided between the steel plate 15 and ball core 6, the lower side polytetrafluoroethylene slide plate 5 is provided between the ball core 6 and middle plate 4, the lower seat plate 1 and upper seat plate 14 side wall are connected through a plurality of elastic connecting strips 10, the elastic connecting strip 10 one side is provided with a plurality of rigid connecting strips 8, the rigid connecting strip 8 is connected with the lower seat plate 1 and upper seat plate 14 through the fixed assembly;The lower seat plate 1 and upper seat plate 14 are all provided with four threaded holes, the threaded hole is all screw-connected with the screw 18, the lower seat plate 1 is fixed in the bridge pier top through the screw 18, the upper seat plate 14 is fixed in the bridge bottom through the screw 18;The lower seat plate 1 top is fixed with steel basin 2, the rubber block 3 is pasted in the steel basin 2 bottom, the rubber block 3 top is fixed with middle plate 4, the middle plate 4 top is provided with ball core 6, the top of middle plate 4 is arc, the bottom of ball core 6 is arc and the top of middle plate 4 arc surface is fitted, the bottom of ball core 6 is connected with the top of middle plate 4 through the lower side polytetrafluoroethylene slide plate 5, the bottom of ball core 6 is connected with the top of middle plate 4 through the lower side polytetrafluoroethylene slide plate 5 with low friction coefficient, realizes the horizontal displacement of ball core 6, the lower side polytetrafluoroethylene slide plate 5 is a very smooth material, has extremely low friction coefficient, so that ball core 6 can significantly reduce the friction between the rubber block 3 and the middle plate 4 when moving, thereby improving the smoothness and efficiency of movement, the rotation flexibility of the pot support is improved;Due to the low friction characteristics of the lower side polytetrafluoroethylene slide plate 5, the rotation torque is small, and is only related to the friction coefficient of the arc surface of the middle plate 4 and the ball core 6 and the lower side polytetrafluoroethylene slide plate 5, and is independent of the rotation angle, so it is particularly suitable for large rotation angle requirements;
[0021] A steel plate 15 is arranged above the spherical core 6 and fixed to the bottom of the upper seat plate 14. The steel plate 15 is connected with the spherical core 6 through an upper polytetrafluoroethylene slide plate 16. The upper polytetrafluoroethylene slide plate 16 with low friction coefficient enables the support to slide more freely in the horizontal direction, meets the requirement of large horizontal displacement of the bridge caused by temperature change, concrete shrinkage and other factors, and prolongs the service life of the support due to the friction resistance and corrosion resistance of the upper polytetrafluoroethylene slide plate 16. The low friction coefficient reduces the friction resistance, improves the stability of the support, reduces the energy consumption in the displacement process of the support, and has stable long-term performance, reduces the maintenance frequency and cost.
[0022] The side walls of the lower seat plate 1 and the upper seat plate 14 are connected through a plurality of elastic connecting strips 10. The elastic connecting strips 10 are connected or welded to the side walls of the lower seat plate 1 and the upper seat plate 14, thereby connecting the lower seat plate 1 and the upper seat plate 14. The elastic connecting strips 10 are made of aluminum alloy elastic ropes which are woven from a plurality of aluminum alloy wire ropes. This material has a high elastic modulus. When an external force acts on the rope, the rope will produce elastic deformation, absorb and store the energy of the external force. Once the external force stops acting, the rope will quickly recover to the original shape with an opposite force. This feature makes the aluminum alloy elastic rope excellent in buffering and shock absorption. When the elastic connecting strips 10 act on the lower seat plate 1 and the upper seat plate 14, they can effectively absorb and disperse the pressure and vibration transmitted from the superstructure of the bridge, provide additional cushioning for the support, and thereby reduce the stress on the support and the bridge.
[0023] The side walls of the lower seat plate 1 and the upper seat plate 14 are connected through a plurality of rigid connecting strips 8. The rigid connecting strips 8 are connected to the lower seat plate 1 and the upper seat plate 14 through a fixing assembly. The fixing assembly includes a hinge seat fixed to the side wall of the lower seat plate 1. One end of the rigid connecting strip 8 is hingedly connected in the hinge seat. The other end of the rigid connecting strip 8 is provided with a limiting groove. A limiting block corresponding to the limiting groove is fixed to the side wall of the upper seat plate 14 and is in clamping connection with the limiting groove. A fixing cylinder is fixed to the top of the limiting block. A screw is threadedly connected in the fixing cylinder. A threaded hole corresponding to the screw is formed in the limiting block. The lower end of the screw is threadedly connected in the threaded hole in the limiting block to fix the movable end of the rigid connecting strip 8, thereby preventing the rigid connecting strip 8 from loosening from the upper seat plate 14 and the lower seat plate 1 when vibrating and ensuring the stability of the connection between the lower seat plate 1 and the upper seat plate 14.
[0024] The rigid connecting strip 8 is made of ultra-high molecular weight polyethylene material, the cable made of ultra-high molecular weight polyethylene material has super high strength and can bear huge tension, and has low elongation rate and is not easy to deform in the stretching process, thereby ensuring the stability of the lower seat plate 1 and the upper seat plate 14, making the support more effectively transfer force when bearing vertical load, improving the bearing capacity of the support and ensuring the safety of the bridge; the rigid connecting strip 8 is provided with a certain length of free length when installed, and is in a relaxed state when the lower seat plate 1 and the upper seat plate 14 do not have an angle or displacement, and when the displacement or angle of the upper seat plate 14 and the lower seat plate 1 is too large, the relaxed rigid connecting strip 8 is tightened to limit the further displacement of the lower seat plate 1 and the upper seat plate 14, and the relaxed rigid connecting strip 8 ensures that no tension is generated on the elastic connecting strip 10 in the normal state of the lower seat plate 1 and the upper seat plate 14; when the lower seat plate 1 or the upper seat plate 14 is slightly impacted or vibrated, the elastic expansion of the elastic connecting strip 10 can effectively absorb and relieve the energy generated by the vibration to have an anti-vibration effect, and the rigid connecting strip 8 does not interfere with the process because it is in a relaxed state; in the case of a large impact, when the displacement or angle between the lower seat plate 1 and the upper seat plate 14 increases, the elastic connecting strip 10 can buffer part of the impact, and the originally relaxed rigid connecting strip 8 is gradually tightened to prevent the displacement or angle from being too large, thereby ensuring the stability of the connection between the lower seat plate 1 and the upper seat plate 14, improving the bearing and anti-vibration of the support and ensuring the safety of the bridge;
[0025] The fixing assembly further comprises two fixing plates 13 fixed to the side wall of the upper seat plate 14, a clamping plate 12 in a "H" shape structure is hinged between the two fixing plates 13, the outer side wall of one side of the rigid connecting strip 8 is provided with a clamping groove matched with the clamping plate 12, the side wall of the upper seat plate 14 is provided with a threaded hole, a bolt 11 is arranged in the threaded hole, the bolt 11 is sequentially threaded through the clamping plate 12 and the rigid connecting strip 8 and is screwed with the threaded hole, and the other side of the rigid connecting strip 8 is hinged to the side wall of the lower seat plate 1 through a hinge shaft 7; the side wall of the upper seat plate 14 is fixed with two fixing plates 13, the clamping plate 12 is arranged between the two fixing plates 13, the clamping plate 12 is provided with a front and rear through fixing hole, a rotating shaft is welded or pasted in the fixing hole, both ends of the rotating shaft are rotatably connected with the fixing plate 13 through bearings, the clamping plate 12 rotates between the two fixing plates 13, and then is matched with the clamping groove on the movable end of the rigid connecting strip 8, the clamping plate 12 is screwed with the bolt 11, the side wall of the upper seat plate 14 is provided with a threaded hole matched with the bolt 11, the movable end of the rigid connecting strip 8 is provided with a through hole, the bolt 11 screwed with the clamping plate 12 is threaded through the through hole of the movable end of the rigid connecting strip 8 and is screwed with the threaded hole in the side wall of the upper seat plate 14, and then the movable end of the rigid connecting strip 8 is fixed to the side wall of the upper seat plate 14, the other end of the rigid connecting strip 8 is hinged to the side wall of the lower seat plate 1 through the hinge shaft 7, the rigid connecting strip 8 rotates around the hinge shaft 7, so that the movable end thereof is in contact with the side wall of the upper seat plate 14, the clamping plate 12 is rotated between the two fixing plates 13, the clamping plate 12 is matched with the clamping groove on the movable end of the rigid connecting strip 8, the bolt 11 on the clamping plate 12 is threaded through the through hole of the rigid connecting strip 8 and is screwed in the threaded hole in the side wall of the upper seat plate 14, and then the bolt 11 is limited, so that the rigid connecting strip 8 connects the lower seat plate 1 and the upper seat plate 14, the rigid connecting strip 8 can avoid falling as much as possible during displacement or cornering, and the stability of the connection between the lower seat plate 1 and the upper seat plate 14 is ensured;
[0026] As shown in Figure 1 , Figure 2 and Figure 3 , the bottom of the upper seat plate 14 is provided with two symmetrical limiting plates 17; the bottom of the lower seat plate 1 is welded or pasted with two limiting plates 17, the limiting plates 17 limit the position of the upper seat plate 14, when the displacement or cornering angle between the lower seat plate 1 and the upper seat plate 14 is too large, the inner side wall of the limiting plate 17 is in contact with the outer side wall of the steel basin 2, and the displacement distance between the lower seat plate 1 and the upper seat plate 14 is limited; the outer side wall of the steel basin 2 is provided with a limiting ring 19, and the outer side wall of the limiting ring 19 is in contact with the inner side wall of the limiting plate 17; the outer side wall of the steel basin 2 is pasted with a limiting ring 19, and the limiting ring 19 has elasticity, so that the impact generated when the inner side wall of the limiting plate 17 is in contact with the limiting ring 19 can be buffered, and the damping effect is better;
[0027] As shown in Figure 1 , Figure 2 and Figure 3As shown, the displacement sensor 9 is installed on the lower seat plate 1, and the controller and the battery electrically connected with the displacement sensor 9 are installed on the top of the lower seat plate 1, the battery provides power for the controller and the displacement sensor 9, the displacement sensor 9 monitors the moving distance of the lower seat plate 1, then transmits the monitored data to the controller, the controller transmits the signal to the remote server or the cloud platform through the wireless network after receiving the signal, realizes the remote monitoring, storage and analysis of the data; and in order to monitor the measurement value of the displacement sensor 9 in real time, the controller may transmit the signal to the display or the monitoring equipment, so that the operator can intuitively see the current position or displacement state of the lower seat plate 1 and the upper seat plate 14; the displacement sensor 9 is a laser sensor, which can stably monitor the displacement of the lower seat plate 1 and conveniently monitor the deformation of the bridge.
[0028] In actual use, the lower seat plate 1 and the upper seat plate 14 are respectively fixed on the pier and the bridge through the screw 18, the vertical impact of the bridge is buffered and damped through the rubber block 3 in the steel basin 2, the displacement and the rotation angle between the lower seat plate 1 and the upper seat plate 14 are more stable through the upper polytetrafluoroethylene slide plate 16 and the lower polytetrafluoroethylene slide plate 5, the connection between the lower seat plate 1 and the upper seat plate 14 is more stable through the rigid connecting strip 8 of the fixing assembly, and the impact on the lower seat plate 1 and the upper seat plate 14 is buffered through the cooperation of the several rigid connecting strips 8 and the elastic connecting strips 10, thereby improving the anti-seismic effect.
Claims
1. A pot bearing for bridges, comprising a lower bearing plate (1) and an upper bearing plate (14) distributed vertically, wherein both the lower bearing plate (1) and the upper bearing plate (14) are provided with a plurality of threaded holes, and screws (18) for fixing the lower bearing plate (1) and the upper bearing plate (14) to the pier and the bridge respectively are provided in the threaded holes; a steel pot (2) is provided at the top of the lower bearing plate (1); a rubber block (3) is provided at the bottom of the steel pot (2); an intermediate plate (4) is provided on the rubber block (3); a ball core (6) is provided on the intermediate plate (4); and a steel plate (15) fixed to the bottom of the upper bearing plate (14) is provided above the ball core (6); characterized in that: The steel plate (15) is provided with an upper Teflon slide plate (16) between the ball core (6), the ball core (6) is provided with a lower Teflon slide plate (5) between the intermediate plate (4), the side wall of the lower seat plate (1) and the upper seat plate (14) is connected through a plurality of elastic connecting strips (10), one side of the elastic connecting strip (10) is provided with a plurality of rigid connecting strips (8), the rigid connecting strip (8) connects the lower seat plate (1) and the upper seat plate (14) through a fixing assembly.
2. The pot bearing for a bridge according to claim 1, characterized in that: The fixing assembly comprises two fixing plates (13) fixed on the side wall of the upper seat plate (14), the fixing plates (13) are hinged with a clamping plate (12) in a 'Fang' shaped structure, the outer side wall of one side of the rigid connecting strip (8) is provided with a clamping groove matched with the clamping plate (12), the side wall of the upper seat plate (14) is provided with a threaded hole, the threaded hole is provided with a bolt (11), the bolt (11) is sequentially threaded through the clamping plate (12) and the rigid connecting strip (8) and is screwed with the threaded hole, the other side of the rigid connecting strip (8) is hinged to the side wall of the lower seat plate (1) through a hinge shaft (7).
3. The pot bearing for a bridge according to claim 1, characterized in that: The bottom of the upper seat plate (14) is provided with two symmetrically distributed limiting plates (17).
4. The pot bearing for a bridge according to claim 3, characterized in that: The outer side wall of the steel basin (2) is provided with a limiting ring (19), and the outer side wall of the limiting ring (19) is in contact with the inner side wall of the limiting plate (17).
5. The pot bearing for a bridge according to claim 1, characterized in that: The displacement sensor (9) is installed on the lower seat plate (1).
6. The pot bearing for a bridge according to claim 1, characterized in that: The rigid connecting strip (8) is made of ultrahigh molecular weight polyethylene material.
7. The pot bearing for a bridge according to claim 1, characterized in that: The elastic connecting strip (10) is made of aluminum alloy elastic rope.