Bridge anti-seismic support
By designing bridge seismic bearings, the electromagnetic coils controlled by seismic wave signals are used to provide magnetic attraction, solving the problem that bridge bearings cannot be instantly fixed during earthquakes and improving the seismic performance of bridges.
Patent Information
- Application Number
- CN202520406856.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-10
- Publication Date
- 2026-01-30
- Estimated Expiration
- 2035-03-10
AI Technical Summary
Existing bridge bearings cannot be instantly adjusted and fixed in response to earthquake or aftershock signals, posing a safety hazard.
A bridge seismic bearing was designed, comprising a base, an upper connecting seat, a spherical crown liner, a curved polytetrafluoroethylene plate, a transverse wave anti-seismic plate, and an electromagnetic coil. The electromagnetic coil is controlled by a seismic wave signal receiver to provide magnetic attraction force, thereby achieving instantaneous fixation of the upper and lower connections of the bridge.
When an earthquake signal is received, the electromagnetic coil provides magnetic attraction to keep the bridge connection stable, prevent it from overturning, and improve the safety of the bridge during an earthquake.
Smart Images
Figure CN223853160U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to bridge support technical field especially relates to a bridge anti-seismic support. BACKGROUND
[0002] There are various types of conventional bridge supports, such as ball-type supports, plate-type rubber supports, basin-type rubber supports, etc. The main functions of a bridge support are two-fold: one is to effectively transfer the bridge load (dynamic load and static load) to the pier, and the other is to overcome the bias pressure of the beam body caused by the displacement of the beam body due to braking force, environmental temperature, concrete shrinkage or creep, and load action, etc. For example, in the transverse direction of the bridge body, if the environmental temperature changes, the length of the beam body changes, but the distance between the pier columns remains unchanged. If the connection between the beam body and the pier column is rigid, the rigidly connected part may be sheared or the beam body may generate a large shear force on the connected part. The bridge support allows the beam body to be as vertically pressed on the pier column as possible. The connection structure between the bridge and the pier column not only needs to face the horizontal displacement, but also needs to face the angular deformation caused by the vertical compression deformation or the inconsistent deformation amplitude of different parts. Therefore, a rolling ball-type support that can adapt to both mobile deformation and rotational deformation is generated.
[0003] Moreover, in the prior art, the upper and lower support fixed connections of the bridge cannot be instantaneously adjusted according to the earthquake or aftershock signals, which has certain safety hazards. CONTENT OF THE UTILITY MODEL
[0004] The utility model aims to provide a bridge anti-seismic support, which solves the problem that conventional bridge supports cannot instantaneously adjust the upper and lower support fixed connections of the bridge according to the earthquake or aftershock signals.
[0005] To solve the above technical problems, the utility model adopts the following technical scheme:
[0006] The utility model provides a bridge anti-seismic support, which comprises a base, an upper connecting seat arranged above the base, wherein a boss is arranged at the center of the base, a curved groove is formed at the center of the boss, a spherical cap lining plate matched with the curved groove is arranged on the bottom surface of the upper connecting seat, and a layer of curved polytetrafluoroethylene plate is arranged between the spherical cap lining plate and the curved groove.
[0007] A circle of protective plates is arranged on the bottom surface of the upper connecting seat and located on the outer circumferential side of the spherical cap lining plate, and a transverse wave anti-seismic plate is arranged on the bottom surface of the upper connecting seat and located on the outer side of the circle of protective plates.
[0008] A lateral support shell is arranged on the base and close to the transverse wave anti-seismic plate, and an electromagnetic coil for magnetically attracting the transverse wave anti-seismic plate is arranged in the lateral support shell.
[0009] The electromagnetic coil is externally connected with an excitation power supply 7 and a controller through a wire, and the controller is connected with a seismic wave signal receiver.
[0010] Further, a plurality of lower connecting members are arranged at the bottom of the base.
[0011] Still further, a plurality of upper connecting members are arranged on the upper connecting seat.
[0012] Still further, the shear wave shockproof plates arranged in a rectangular frame are arranged at the bottom of the upper connecting seat; the shear wave shockproof plates are made of magnetic material.
[0013] Still further, a reserved groove for installing the electromagnetic coil is arranged in the lateral supporting shell.
[0014] Compared with the prior art, the bridge seismic support has the beneficial technical effects that:
[0015] When the seismic wave signal receiver receives the seismic longitudinal wave or shear wave information from the earthquake bureau, the bridge seismic support sends the action signal to the controller, and the controller controls the electromagnetic coil in the lateral supporting shell to provide magnetic attraction force to each shear wave shockproof plate, so that the upper connecting seat is fixed relative to the base, and the influence of the earthquake or aftershock on the bridge base is reduced. BRIEF DESCRIPTION OF DRAWINGS
[0016] The bridge seismic support will be further described below in combination with the drawings.
[0017] Fig. 1 FIG. 1 is a schematic view of the main section of the bridge seismic support;
[0018] Fig. 2 FIG. 2 is a schematic view of the external structure of the bridge seismic support;
[0019] Fig. 3 FIG. 3 is a schematic view of the structure of the bridge seismic support.
[0020] Reference signs: 100, base; 101, lower connecting member; 102, curved groove; 200, lateral supporting shell; 201, reserved groove; 300, upper connecting seat; 301, upper connecting member; 302, shear wave shockproof plate; 303, protective plate; 400, spherical cap lining plate; 401, curved polytetrafluoroethylene plate; 500, electromagnetic coil; 600, seismic wave signal receiver; 700, excitation power supply. DETAILED DESCRIPTION
[0021] This embodiment discloses a bridge seismic bearing, including a base 100 and an upper connecting seat 300 installed above the base 100; wherein a boss is integrally formed at the center of the base 100, and a curved groove 102 is formed at the center of the boss; a spherical crown liner 400 adapted to the curved groove 102 is installed on the bottom surface of the upper connecting seat 300, wherein a layer of curved polytetrafluoroethylene plate 401 is installed between the spherical crown liner 400 and the curved groove 102 to ensure wear resistance.
[0022] In this embodiment, a protective plate 303 is installed on the bottom surface of the upper connecting seat 300 and on the outer periphery of the spherical crown liner 400; wherein the protective plate 303 is a cylindrical structure, and its inner diameter is larger than the outer diameter of the spherical crown liner 400 and the boss, for limiting the sliding of the spherical crown liner 400.
[0023] In this embodiment, a transverse wave damping plate 302 is installed on the bottom surface of the upper connecting seat 300 and outside the ring protective plate 303; the transverse wave damping plate 302 is used to counteract the impact of vibration waves on the bridge base. The transverse wave damping plate 302, arranged in a rectangular frame, is installed at the bottom of the upper connecting seat 300; the transverse wave damping plate 302 is made of a magnetic material.
[0024] like Figs. 1-3 As shown, a plurality of lower connectors 101 are installed at the bottom of the base 100 for connecting bridge support columns; a plurality of upper connectors 301 are installed on the upper connecting seat 300 for connecting the bridge.
[0025] In this embodiment, a lateral support shell 200 is installed on the base 100 near the transverse wave damping plate 302; the lateral support shells 200 are respectively installed on the outer side of the transverse wave damping plate 302. An electromagnetic coil 500 that magnetically attracts the transverse wave damping plate 302 is installed inside the lateral support shell 200; a reserved slot 201 for installing the electromagnetic coil 500 is provided inside the lateral support shell 200.
[0026] The electromagnetic coil 500 is externally connected to an excitation power supply 700 and a controller via wires, and the controller is connected to a seismic wave signal receiver 600.
[0027] When the seismic wave signal receiver 600 receives seismic P-wave or S-wave information from the seismological bureau, it sends it as an action signal to the controller. The controller then controls the electromagnetic coil 500 inside the lateral support shell 200 to be energized, providing magnetic attraction to each S-wave anti-seismic plate 302. This ensures that the upper connecting seat 300 is in an integral and fixed state relative to the base 100, in order to cope with the impact of earthquakes or aftershocks on the bridge base.
[0028] When the seismic wave signal receiver 600 does not receive the seismic P-wave or S-wave information, the controller controls the electromagnetic coil 500 to be powered on or powered off with low power.
[0029] The above embodiments only describe the preferred modes of the present application, and do not limit the scope of the present application. Without departing from the design spirit of the present application, various modifications and improvements to the technical solutions of the present application made by those skilled in the art shall fall within the protection scope determined by the claims of the present application.
Claims
1. A seismic bearing for a bridge, characterized by: The utility model relates to a seismic wave energy absorption device, including base (100), set up above the upper connecting seat (300) of base (100), wherein the center of base (100) is provided with a boss, and the center of boss is provided with a curved groove (102), the bottom surface of upper connecting seat (300) is provided with a spherical cap lining plate (400) that is adapted with curved groove (102), wherein a layer of curved polytetrafluoroethylene plate (401) is arranged between spherical cap lining plate (400) and curved groove (102); Wherein the bottom surface of upper connecting seat (300) and located the outer circumferential side of spherical cap lining plate (400) are provided with a circle of protective plate (303), and the bottom surface of upper connecting seat (300) and located the outer side of circle protective plate (303) are provided with transverse wave shock resistance plate (302); Wherein the lateral support shell (200) close to transverse wave shock resistance plate (302) is arranged on base (100), wherein the electromagnetic coil (500) that magnetically attracts transverse wave shock resistance plate (302) is arranged in lateral support shell (200); Wherein the electromagnetic coil (500) is connected with excitation power supply (700) and controller through wire, and the controller is connected with seismic wave signal receiver (600).
2. The seismic bridge bearing of claim 1, wherein: A plurality of lower connecting pieces (101) are arranged on the bottom of base (100).
3. The seismic bridge bearing of claim 1, wherein: A plurality of upper connecting pieces (301) are arranged on the upper connecting seat (300).
4. The seismic bridge bearing of claim 1, wherein: The transverse wave shock resistance plate (302) arranged in rectangular frame is arranged on the bottom of upper connecting seat (300), and the transverse wave shock resistance plate (302) is made of magnetic material.
5. The seismic bridge bearing of claim 4, wherein: The reserved groove (201) for installing the electromagnetic coil (500) is arranged in the lateral support shell (200).