Anti-tilt torsion damping support for bridge

Abstract

The utility model aims to provide the anti-tilt torsion damping support for the bridge, which can allow the bridge floor to deflect towards two sides relative to the bridge pier without damaging a support connecting structure while ensuring that a stable and reliable vertical supporting effect is provided between the bridge floor and the bridge pier; and the external force collision and vibration resistance of the whole bridge is greatly improved. The main bearing base plate is located on the upper portion, the connecting bearing platform is located on the lower portion, and a main bearing column located in the middle and anti-torsion connecting columns located on the two sides of the main bearing column are installed between the main bearing base plate and the connecting bearing platform; the bottom of the main bearing column is fixedly connected with the pier connecting bearing platform, and the top of the main bearing column is hinged to the middle of the main bearing base plate, so that the main bearing base plate can deflect and swing around the hinge center. The anti-torsion connecting columns can elastically stretch out and draw back and provide supporting and pulling acting force for the main bearing base plate when the main bearing base plate deflects so as to drive the main bearing base plate to return to the horizontal state.

Description

Technical Field

[0001] This utility model relates to the field of bridge construction structure technology, specifically to a bridge anti-tilting torsional damping bearing. Background Technology

[0002] Currently, my country's bridge construction scale and technology have reached world-leading levels, developing rapidly from learning and following to innovation, moving towards green, low-carbon, sustainable, and intelligent directions. Vibration damping bearings play a crucial role in bridge construction, effectively absorbing and dispersing localized impact energy, reducing the structural response to upward or downward vibrations from the ground, extending the structural service life, preventing resonance, protecting the bridge structure, and improving seismic performance and safety. Simultaneously, vibration damping bearings can also reduce bridge vibration and noise during vehicle traffic, improving driving comfort and stability.

[0003] A bridge vibration damping device and a bridge are disclosed in Chinese utility model patent application CN202320261205.X. The bridge vibration damping device includes a support plate, a base, a first elastic element, and a guide assembly. The base and support plate are arranged parallel to each other and spaced apart. The first elastic element is disposed between the support plate and the base, with one end connected to the support plate and the other end connected to the base. The guide assembly is also disposed between the support plate and the base, with one end connected to the support plate and the other end connected to the base. The guide assembly prevents the first elastic element from undergoing irregular deformation due to prolonged tilting during long-term use, which could damage the bridge vibration damping device, thereby improving its durability and extending its service life.

[0004] In the bridge damping device described in the above scheme, the upper and lower ends of the telescopic support structure connecting the base and the support plate are fixed. This connection structure can effectively absorb vibrations generated when there is vertical compression or tension between the bridge deck and the pier supports, thus providing effective protection for the bridge. However, the applicant discovered that during actual earthquakes, and when the bridge deck or piers are subjected to localized impacts, due to uneven local stress, the bridge deck does not bounce vertically relative to the pier or base below; it also causes the bridge deck to twist in the vertical plane relative to the pier below. In this case, the different heights on both sides of the bridge deck can easily lead to deformation or even breakage of the main connection parts of the existing bridge damping device, seriously affecting the safety of the bridge structure.

[0005] To address the aforementioned issues, this utility model provides an anti-tilting torsional damping bearing for bridges. While ensuring stable and reliable vertical support between the bridge deck and piers, it allows the bridge deck to sway to both sides relative to the piers without damaging the support connection structure, thus greatly improving the overall resistance of the bridge to external impacts and vibrations. Utility Model Content

[0006] This invention provides an anti-tilting torsional damping bearing for bridges, which provides stable and reliable vertical support between the bridge deck and the piers, while allowing the bridge deck to sway to both sides relative to the piers without damaging the support connection structure, thus greatly improving the overall resistance of the bridge to external impacts and vibrations.

[0007] The above-mentioned technical objective of this utility model is achieved through the following technical solution:

[0008] A bridge anti-tilting torsional damping bearing, characterized in that: it comprises an upper main support base plate and a lower connecting support platform; a main support column in the middle and anti-torsion connecting columns on both sides of the main support column are installed between the main support base plate and the connecting support platform; the bottom of the main support column is fixedly connected to the pier connecting support platform and the top is hinged to the middle of the main support base plate, so that the main support base plate can deflect and swing around the hinge center; the anti-torsion connecting columns can elastically expand and contract and provide support and tension forces to the main support base plate when it deflects to drive it back to a horizontal state.

[0009] As a preferred embodiment of the present invention, the anti-torsion connecting column includes a main rod and a telescopic rod inserted inside the main rod. The bottom of the main rod is hinged to the connecting support platform, and the top of the telescopic rod is hinged to the outer side of the main support base plate.

[0010] As a preferred embodiment of the present invention, the main body rod has a first mounting cavity inside, and a return spring is provided inside the first mounting cavity. The two ends of the return spring are fixedly connected to the bottom of the telescopic rod and the bottom surface of the first mounting cavity, respectively.

[0011] As a preferred embodiment of the present invention, the telescopic rod includes a first connecting segment and a second connecting segment that are movably connected to each other by a threaded engagement structure; the second connecting segment can rotate relative to the first connecting segment to adjust and change the length of the telescopic rod.

[0012] As a preferred embodiment of the present invention, the main support column includes a base column section fixedly disposed on the connecting support platform, the base column section having a second mounting cavity for installing a load-bearing damping spring; it also includes a load-bearing connecting section, the bottom of which is inserted into the second mounting cavity and abuts against the top of the load-bearing damping spring, while the top of the load-bearing connecting section is hinged to the main support base plate.

[0013] As a preferred embodiment of the present invention, the top of the main support substrate is further provided with an elastic pad layer that can absorb vibration.

[0014] In summary, this utility model can achieve the following beneficial effects:

[0015] This utility model application provides a bridge anti-tilting torsional damping bearing that provides stable and reliable vertical support between the bridge deck and the piers, while allowing the bridge deck to sway to both sides relative to the piers without damaging the support connection structure, thus greatly improving the overall resistance of the bridge to external impacts and vibrations. Attached Figure Description

[0016] Figure 1 A schematic diagram of a bridge anti-tilting torsional damping bearing in a normal horizontal state;

[0017] Figure 2 This is a schematic diagram of a bridge anti-tilting torsion damping bearing subjected to unbalanced forces and undergoing torsion.

[0018] Figure 3 For torsional connection;

[0019] Figure 4 An enlarged schematic diagram of the internal structure of the main support column.

[0020] In the picture:

[0021] 1—Main support substrate; 101—Elastic padding layer;

[0022] 2—Connecting to the support platform;

[0023] 3—Main support column, 301—Base column section, 3011—Second mounting cavity, 302—Bearing connection section, 303—Bearing damping spring;

[0024] 4—Anti-torsion connecting column, 401—Main rod, 4011—First mounting cavity, 402—Telescopic rod, 4021—First connecting section, 4022—Second connecting section, 4023—Threaded engagement structure, 403—Reset spring. Detailed Implementation

[0025] The following specific embodiments are merely explanations of this utility model and are not intended to limit it. After reading this specification, those skilled in the art can make modifications to these embodiments without contributing any inventive step, but such modifications are protected by patent law as long as they fall within the scope of the claims of this utility model.

[0026] In the embodiments of this patent application, an anti-tilting torsional damping bearing for bridges is provided, which can provide stable and reliable vertical support between the bridge deck and the piers, while allowing the bridge deck to sway to both sides relative to the piers without damaging the support connection structure, thus greatly improving the overall resistance of the bridge to external impacts and vibrations.

[0027] The structure of the anti-tilting and torsional damping bearing for this bridge can be found in the attached instruction manual. Figure 1 The structure shown will be used for explanation. First, the shock-absorbing support device includes an upper main support base plate 1 and a lower connecting support platform 2. The main support base plate 1 provides stable support for the upper bridge deck or connected structures, while the lower connecting support platform 2 is mainly used to connect and fix to the top of the bridge pier components. A main support column 3 located in the middle and anti-torsional connecting columns 4 located on both sides of the main support column 3 are installed between the main support base plate 1 and the connecting support platform 2. The bottom of the main support column 3 is fixedly connected to the connecting support platform 2, and the top is hinged to the middle of the main support base plate 1, allowing the main support base plate 1 to deflect and swing around the hinge center. The main support column 3 here has a relatively robust structure and is mainly used to provide stable vertical support for the main body of the bridge deck and the vehicles passing above it. The anti-torsion connecting columns 4 located on both sides are mainly used to provide a force to maintain stability and balance to the aforementioned main support base plate 1, and to provide a reverse reset force to the main support base plate 1 when it deflects. Therefore, their structural dimensions can be smaller than the diameter of the main support column 3.

[0028] The main support column 3 includes a base column section 301 fixedly mounted on the connecting support platform 2. The base column section 301 has a second mounting cavity 3011 for installing a load-bearing damping spring 303. It also includes a load-bearing connecting section 302, the bottom of which is inserted into the second mounting cavity 3011 and abuts against the top of the load-bearing damping spring 303. The top of the load-bearing connecting section 302 is hinged to the main support base plate 1. The aforementioned anti-torsion connecting column 4 includes a main rod 401 and a telescopic rod 402 inserted inside the main rod 401. The bottom of the main rod 401 is hinged to the connecting support platform, and the top of the telescopic rod 402 is hinged to the outer side of the main support base plate 1. (Refer to the attached specification.) Figure 3As shown in the structure, the main body rod 401 has a first mounting cavity 4011 inside, and a return spring 403 is provided inside the first mounting cavity 4011. The two ends of the return spring 403 are fixedly connected to the bottom of the telescopic rod 402 and the bottom surface of the first mounting cavity 4011, respectively.

[0029] Under the aforementioned structure, when the bridge deck structure is subjected to an unbalanced force on one side and tends to twist to one side, the torsional torque will be transmitted downwards, causing the main support plate 1 and the structure above it to deflect to that side without damaging components in other rigid connection mechanisms. After the main support plate 1 deflects, the anti-torsion connecting column 4 on one side will be compressed, while the anti-torsion connecting column 4 on the other side will be stretched. At this time, when the telescopic rod 402 on one side is pulled upwards with the deflection of the main support plate 1, the return spring 403 will generate a downward resisting force; simultaneously, when the telescopic rod 402 on the other side is compressed downwards with the deflection of the main support plate 1, the return spring 403 will generate an upward resisting force. When the vibration disappears or the external force causing the torsion of the main support plate 1 is removed, the force generated by the return springs 403 in the anti-torsion connecting columns 4 on both sides will drive the main support plate 1 back to a horizontal state, thereby quickly restoring the entire bridge deck to a horizontal state and preventing disruption to normal traffic.

[0030] Based on the above structure, the applicant also discovered that after prolonged use, the anti-tilting torsional damping bearing for bridges provided in this embodiment may experience fatigue of the return spring 403 inside the anti-twist connecting column 4 due to the continuous unbalanced torsional action. In this case, the bridge deck can no longer maintain a level position as expected, affecting the normal passage of vehicles and traffic. Therefore, in this embodiment, as a preferred structure, the telescopic rod 402 is designed to include a first connecting section 4021 and a second connecting section 4022. The first connecting section 4021 and the second connecting section 4022 are movably connected to each other via a threaded engagement structure 4023. Simultaneously, the second connecting section 4022 can rotate relative to the first connecting section 4021 to adjust the length of the telescopic rod 402. By adjusting the length of the telescopic rod 402, a small distance can be compensated for the fatigue deformation of the spring itself, thereby restoring the bridge deck to a level position.

[0031] In a further preferred embodiment, in order to reduce the impact of small-amplitude, high-frequency vibrations on the bridge surface caused by pedestrians or vehicles on the connecting components, an elastic pad 101 made of, for example, hard rubber or synthetic plastic is provided on the top of the main support base plate 1 to effectively absorb vibrations and improve the connection reliability of all parts of the bridge.

[0032] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this utility model, and these modifications or substitutions should all be covered within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A tilt-rotation damping bearing for bridges, characterized by: The system includes a main support base plate (1) at the top and a connecting support platform (2) at the bottom. A main support column (3) at the middle and anti-torsion connecting columns (4) on both sides of the main support column (3) are installed between the main support base plate (1) and the connecting support platform (2). The bottom of the main support column (3) is fixedly connected to the connecting support platform (2), and the top is hinged to the middle of the main support base plate (1), so that the main support base plate (1) can deflect and swing around the hinge center. The anti-torsion connecting columns (4) can elastically expand and contract and provide support and tension forces to the main support base plate (1) when it deflects to drive it back to a horizontal state.

2. The anti-tilt torsion shock support for bridges according to claim 1, characterized in that: The anti-torsion connecting column (4) includes a main rod (401) and a telescopic rod (402) inserted inside the main rod (401). The bottom of the main rod (401) is hinged to the connecting support platform (2), and the top of the telescopic rod (402) is hinged to the outer side of the main support base plate (1).

3. The anti-tilt torsion shock support for bridges according to claim 2, characterized in that: The main body rod (401) has a first mounting cavity (4011) inside, and a return spring (403) is provided inside the first mounting cavity (4011). The two ends of the return spring (403) are fixedly connected to the bottom of the telescopic rod (402) and the bottom surface of the first mounting cavity (4011), respectively.

4. The anti-tilt torsion shock support for bridges according to claim 3, characterized in that: The telescopic rod (402) includes a first connecting section (4021) and a second connecting section (4022) that are movably connected to each other by a threaded engagement structure (4023); the second connecting section (4022) can rotate relative to the first connecting section (4021) to adjust and change the length of the telescopic rod (402).

5. The anti-tilt torsion shock support for bridges according to claim 4, characterized in that: The main support column (3) includes a base column section (301) fixedly installed on the connecting support platform (2). The base column section (301) has a second mounting cavity (3011) for installing a load-bearing damping spring (303). It also includes a load-bearing connecting section (302). The bottom of the load-bearing connecting section (302) is inserted into the second mounting cavity (3011) and abuts against the top of the load-bearing damping spring. The top of the load-bearing connecting section (302) is hinged to the main support base plate (1).

6. The anti-tilt and torsion shock support for bridges according to claim 5, characterized in that: The top of the main support substrate (1) is also provided with an elastic pad (101) that can absorb vibration.

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