Friction damping type basin-type support with self-resetting function

Abstract

The invention discloses a friction damping basin type support with a self-resetting function, which comprises a support main body, the support main body is composed of a top plate and a bottom basin, the top plate is mounted on the bottom basin, and a self-repairing damping structure is further arranged in the support main body; the self-repairing damping structure comprises a pendulum structure used for achieving a damping effect during an earthquake and a limiting structure used for positioning the position of the pendulum structure during normal use. Through the mode, the friction damping type basin-type support with the self-resetting function is provided with a self-repairing damping structure, so that the problem that the anti-seismic effect of two existing anti-seismic basin-type supports is poor can be effectively solved; and meanwhile, the upper structure can be automatically reset under the action of self weight through the transition plate.

Description

Technical Field

[0001] The invention belongs to the field of bridge construction engineering, and in particular relates to a friction shock-absorbing pot-type bearing with a self-resetting function. Background Art

[0002] Bridge bearings are the weak points in bridge earthquake resistance. When the inertial force transmitted from the superstructure is greater than the strength of the bridge bearings, earthquake damage is extremely common. The main forms of damage are shearing off of bearing limit blocks, pulling out and shearing of anchor bolts, and falling off of upper and lower structural components of movable bearings.

[0003] Conventional seismic pot bearings usually use the following two methods to achieve seismic resistance:

[0004] One is to increase the structural size to bear the horizontal force of the earthquake. According to this design method, when the local vibration peak acceleration is large, the horizontal force borne by the bearing is very large, sometimes reaching 30% to 40% of the vertical force of the bearing. At this time, relying solely on increasing the structural size of the bearing itself to "hardly resist" the earthquake force is not good for both the bearing itself and the force on the bridge pier.

[0005] Another method is to set a sliding surface in the bottom basin, which dissipates energy through friction damping during an earthquake, thereby reducing the seismic force. However, due to the internal size limitations of the bottom basin, the displacement of the sliding surface is small and the shock absorption effect is limited. Summary of the invention

[0006] The main technical problem solved by the present invention is to provide a friction shock-absorbing pot-type bearing with a self-resetting function, which can solve the problem that the two existing earthquake-resistant pot-type bearings have poor earthquake-resistant effects.

[0007] In order to solve the above technical problems, a technical solution adopted by the present invention is: to provide a friction damping pot-type support with a self-resetting function, comprising a support body, the support body consisting of a top plate and a bottom pot, the top plate being mounted on the bottom pot, and a self-repairing damping structure being further provided in the support body;

[0008] The self-repairing shock-absorbing structure comprises a pendulum structure for shock-absorbing during earthquakes and a limiting structure for positioning the pendulum structure during normal use.

[0009] In a preferred embodiment of the present invention, the pendulum structure includes a transition plate, which is installed between the top plate and the bottom basin, and the top of the transition plate is provided with a connecting groove that matches the bottom connecting block of the top plate, and the bottom of the transition plate is provided with a convex spherical surface that matches the spherical pelvic cavity on the upper surface of the bottom basin.

[0010] In a preferred embodiment of the present invention, a clearance groove is provided on the side of the connection block near the top plate, and when the connection block is placed in the connection groove, the outer wall of the clearance groove does not contact the inner wall of the connection groove.

[0011] In a preferred embodiment of the present invention, a rubber pressure plate is installed between the bottom of the connecting block and the bottom of the connecting groove, and a brass sealing ring is installed on the outer edge of the upper surface of the rubber pressure plate.

[0012] In a preferred embodiment of the present invention, a spherical wear-resistant plate is installed at the bottom of the spherical surface through a mounting groove, the bottom of the spherical wear-resistant plate is higher than the mounting groove, and the spherical wear-resistant plate cooperates with the spherical stainless steel plate on the surface of the pelvic cavity.

[0013] In a preferred embodiment of the present invention, the limiting structure includes a limiting plate, which is installed on the upper surface of the pelvic cavity by locking bolts, and a clearance hole is provided in the limiting plate. The transition plate is located in the clearance hole, and the inner diameter of the clearance hole is smaller than the inner diameter of the pelvic cavity.

[0014] The beneficial effects of the present invention are as follows: the present invention is a friction shock-absorbing pot-type bearing with a self-resetting function. The pot-type bearing is provided with a self-repairing shock-absorbing structure, which can not only effectively solve the problem that the two existing earthquake-resistant pot-type bearings have poor earthquake resistance effects, but also enable its upper structure to automatically reset under the action of its own weight through a transition plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a half-section view of the main view of a friction shock-absorbing pot-type bearing with a self-resetting function.

[0016] Figure 2 It is a cross-sectional view of a top view of a friction shock-absorbing pot-type bearing with a self-resetting function.

[0017] The markings of the components in the attached drawings are as follows: 1. Top plate; 2. Bottom basin; 3. Basin; 4. Spherical stainless steel plate; 5. Spherical wear-resistant plate; 6. Transition plate; 7. Rubber pressure plate; 8. Brass sealing ring; 9. Make way groove; 10. Connecting groove; 11. Connecting block; 12. Locking bolt; 13. Limit plate. DETAILED DESCRIPTION

[0018] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention.

[0019] See also Figure 1 and Figure 2A friction shock-absorbing pot-type bearing with a self-resetting function includes a bearing body, which is composed of a top plate and a bottom basin 2. The top plate is installed on the bottom basin 2. The top plate contacts the bottom of the bridge beam to transfer the upper structure load.

[0020] The lower part of the bottom basin 2 contacts the top pad stone of the pier, transferring the upper structure load to the pier.

[0021] The support body is also provided with a self-repairing shock-absorbing structure, which can not only effectively solve the problem that the two existing earthquake-resistant pot-type supports have poor earthquake-resistant effects, but also enable its upper structure to automatically reset under the action of its own weight through the transition plate 6.

[0022] The self-repairing shock-absorbing structure comprises a pendulum structure for shock-absorbing during earthquakes and a limiting structure for positioning the pendulum structure during normal use.

[0023] The pendulum structure includes a transition plate 6, which is installed between the top plate and the bottom basin 2. The top of the transition plate 6 is provided with a connecting groove 10 that matches the bottom connecting block 11 of the top plate. The connecting groove 10 confines the top plate, the rubber pressure plate 7 and the brass sealing ring 8 therein.

[0024] The bottom of the transition plate 6 is provided with a protruding spherical surface which matches with the spherical basin cavity 3 on the upper surface of the bottom basin 2 .

[0025] A clearance groove 9 is provided on the side of the connecting block 11 near the top plate. When the connecting block 11 is placed in the connecting groove 10, the outer wall of the clearance groove 9 does not contact the inner wall of the connecting groove 10, thereby reducing the contact area between the connecting block 11 and the connecting groove 10 and reducing friction.

[0026] A rubber pressure plate 7 is installed between the bottom of the connecting block 11 and the bottom of the connecting groove 10.

[0027] The rubber pressure-bearing plate 7 is used to transfer the vertical load and can also realize the vertical rotation function of the support through its own deformability.

[0028] A brass sealing ring 8 is installed on the outer edge of the upper surface of the rubber pressure plate 7. The brass sealing ring 8 has a restraining effect on the rubber pressure plate 7 to prevent the rubber pressure plate 7 from being squeezed out during the rotation of the top plate.

[0029] A spherical wear-resistant plate 5 is installed at the bottom of the spherical surface through a mounting groove. The spherical wear-resistant plate 5 is made of polymer material, and the surface is not coated with silicone grease. It forms a friction pair with the spherical stainless steel plate 4.

[0030] The bottom of the spherical wear-resistant plate 5 is higher than the installation groove, and the spherical wear-resistant plate 5 matches the spherical stainless steel plate 4 on the surface of the basin cavity 3 , and the spherical stainless steel plate 4 is welded and fixed to the basin cavity 3 , forming a friction pair with the spherical wear-resistant plate 5 .

[0031] The limiting structure includes a limiting plate 13, which is installed on the upper surface of the pelvic cavity 3 through a locking bolt 12. A clearance hole is provided in the limiting plate 13, and the transition plate 6 is located in the clearance hole. The inner diameter of the clearance hole is smaller than the inner diameter of the pelvic cavity 3. The limiting plate 13 is used to limit the transition plate 6 in the bottom basin 2.

[0032] During an earthquake, the transition plate 6 and its upper structure are locked by the limit plate 13. When the seismic force exceeds the set value, the locking bolt 12 is sheared off, thereby releasing part of the seismic energy, allowing the transition plate 6 and its lower structure to enter a seismic isolation working state. The spherical wear-resistant plate 5 cooperates with the spherical stainless steel plate 4, so that the support can slide over a long distance under the action of a larger seismic force, thereby achieving the purpose of friction energy dissipation and shock reduction. During the sliding process along the spherical surface, the height of the support body is raised, and work is done by potential energy, further achieving the purpose of consuming seismic energy.

[0033] After an earthquake, the transition plate 6 and its upper structure can automatically reset under the action of their own weight by using a simple pendulum principle. At the same time, the support can be quickly repaired by replacing the locking bolts 12 and the limiting plates 13 to restore its normal function.

[0034] Compared with the existing technology, the present invention is a friction shock-absorbing pot-type bearing with a self-resetting function. The pot-type bearing is provided with a self-repairing shock-absorbing structure, which can not only effectively solve the problem that the two existing seismic-resistant pot-type bearings have poor seismic effects, but also enable its upper structure to automatically reset under the action of its own weight through a transition plate.

[0035] In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "left", "right", "inside", "outside", etc. are based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the product of the invention is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0036] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A friction damping pot-type support with a self-resetting function, comprising a support body, the support body consisting of a top plate and a bottom pot, the top plate being mounted on the bottom pot, characterized in that: A self-repairing shock-absorbing structure is also provided in the support body; The self-repairing shock-absorbing structure comprises a pendulum structure for shock-absorbing during earthquakes and a limiting structure for positioning the pendulum structure during normal use.

2. The friction damping pot-type support with self-resetting function according to claim 1, characterized in that: The pendulum structure includes a transition plate, which is installed between the top plate and the bottom basin. The top of the transition plate is provided with a connecting groove that matches the bottom connecting block of the top plate, and the bottom of the transition plate is provided with a convex spherical surface that matches the spherical basin cavity on the upper surface of the bottom basin.

3. The friction damping pot-type support with self-resetting function according to claim 2, characterized in that: A clearance groove is provided on the side of the connection block near the top plate, and when the connection block is placed in the connection groove, the outer side wall of the clearance groove does not contact the inner side wall of the connection groove.

4. The friction damping pot-type support with self-resetting function according to claim 2, characterized in that: A rubber pressure-bearing plate is installed between the bottom of the connecting block and the bottom of the connecting groove, and a brass sealing ring is installed on the outer edge of the upper surface of the rubber pressure-bearing plate.

5. The friction damping pot-type support with self-resetting function according to claim 2, characterized in that: A spherical wear-resistant plate is installed at the bottom of the spherical surface through a mounting groove. The bottom of the spherical wear-resistant plate is higher than the mounting groove. The spherical wear-resistant plate matches the spherical stainless steel plate on the surface of the pelvic cavity.

6. The friction damping pot-type support with self-resetting function according to claim 2, characterized in that: The limiting structure includes a limiting plate, which is installed on the upper surface of the pelvic cavity through locking bolts. A clearance hole is provided in the limiting plate, and the transition plate is located in the clearance hole. The inner diameter of the clearance hole is smaller than the inner diameter of the pelvic cavity.

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