CN205741889U - A kind of without lifting bidirectional damping friction pendulum support - Google Patents

Abstract

A non-elevating two-way shock-absorbing friction pendulum support to eliminate the phenomenon of beam body lifting when the bridge is deformed and displaced by temperature. When the bridge vibrates greatly due to factors such as wind, braking, and earthquakes, the support shares part of the horizontal load and reduces the load. The effect of earthquakes on the damage of the upper beam body. It includes an upper support plate, a lower support plate and a spherical crown liner between the two. There is a first friction pair between the lower surface of the upper support plate and the upper surface of the spherical crown liner and a first wear-resistant plate , There is a second friction pair between the lower surface of the spherical crown liner and the upper surface of the lower support plate, and a second wear-resistant plate is arranged. The first friction pair and the second friction pair are spherical friction pairs, and a transverse limit shear pin constraining the second friction pair is arranged on the lower support plate. A bottom plate is arranged below the lower support plate, and a plane sliding friction pair is formed between the bottom surface of the lower support plate and the top surface of the bottom plate, and a third wear-resistant plate is provided. The cross bridge of the lower support plate is provided with a speed locker outwardly, and the speed locker is fixedly connected with the lower support plate and the bottom plate.

Description

A non-lifting two-way shock-absorbing friction pendulum bearing

technical field

The utility model relates to a bridge support, in particular to a non-lifting one-way damping friction pendulum support.

Background technique

The bridge support is the supporting part of the bridge span structure, which transmits the support reaction force of the bridge span structure to the piers, and ensures that the bridge span structure meets the deformation requirements under load. The structure of the existing bridge friction pendulum bearing mainly includes an upper bearing plate, a lower bearing plate and a spherical crown assembly located between them, and a spherical lower surface of the upper bearing plate and a spherical upper surface of the spherical crown liner are arranged There is a first wear-resistant plate, and a second wear-resistant plate is arranged between the lower surface of the spherical crown liner and the upper surface of the lower support. When the temperature deformation of the bridge causes the support to move, the beam body will rise to a certain extent, which will cause the arching phenomenon of the railway track or road surface at the support, which will affect the traffic capacity of the road, especially the phenomenon of high-speed vehicle jumping; , Earthquake and other factors can not share the horizontal load when there is a large vibration.

Utility model content

The technical problem to be solved by the utility model is to provide a non-lifting two-way shock-absorbing friction pendulum bearing to eliminate the phenomenon that the beam body is raised when the temperature of the bridge is deformed and displaced. During vibration, the support shares part of the horizontal load, reducing the effect of earthquake damage on the upper beam.

The technical solution adopted by the utility model to solve its technical problems is as follows:

A non-elevating two-way shock-absorbing friction pendulum bearing of the present utility model comprises an upper bearing plate, a lower bearing plate and a spherical crown liner between them, the lower surface of the upper bearing plate and the spherical crown liner There is a first friction pair between the upper surfaces and a first wear-resistant plate, and there is a second friction pair and a second wear-resistant plate between the lower surface of the spherical crown liner and the upper surface of the lower support plate, and the characteristics are: The first friction pair and the second friction pair are spherical friction pairs, and a transverse limit shear pin constraining the second friction pair is arranged on the lower support plate; a bottom plate is arranged below the lower support plate, and the lower support plate A plane sliding friction pair is formed between the bottom surface of the seat plate and the top surface of the bottom plate, and a third wear-resistant plate is provided; the cross bridge of the lower support plate is provided with a speed locker outward, and the speed locker is fixedly connected with the lower support plate and the bottom plate .

The beneficial effect of the utility model is that the normal design displacement and rotation of the beam body can be realized in the normal state without elevating the beam body; The speed locker on the top locks to share part of the horizontal load, and at the same time, the friction pair of the curved surface swings along the longitudinal direction to dissipate energy, reduce the vibration frequency of the beam body, and reduce the damage caused by the earthquake to the upper beam body; The stainless steel plate prolongs the service life of the support; there are specially designed guide grooves and slide rails on the connecting device, which can realize the separate replacement of the speed locking device without affecting the use of the support.

Description of drawings

This manual includes the following two drawings:

Fig. 1 is a structural schematic diagram of a non-lifting two-way shock-absorbing friction pendulum bearing of the present invention;

Fig. 2 is a top view of a non-lifting two-way damping friction pendulum bearing of the present invention;

The components and corresponding marks are shown in the figure: upper anchorage steel rod 1, upper bearing plate 2, first wear-resistant plate 3, spherical crown lining plate 4, second wear-resistant plate 5, lower bearing plate 6, the first wear-resistant plate Three wear-resistant plate 7, bottom plate 8, lower anchor steel rod 9, anchor block bolt 10, anchor block 11, 12 speed locker, guide rail bolt 13, guide rail 14, lower anchor bolt 15, transverse limit shear force Pin 16, limit plate 17, upper anchor bolt 18.

detailed description

Below in conjunction with accompanying drawing and embodiment the utility model is further described.

Referring to Fig. 1 and Fig. 2, a non-lifting one-way shock-absorbing friction pendulum bearing of the present utility model includes an upper bearing plate 2, a lower bearing plate 6 and a spherical crown liner 4 between them, There is a first friction pair between the lower surface of the upper bearing plate 2 and the upper surface of the spherical crown lining plate 4 and a first wear-resistant plate 3 is provided, and there is a friction pair between the lower surface of the spherical crown lining plate 4 and the upper surface of the lower bearing plate 6 The second friction pair is provided with a second wear plate 5 . The first friction pair and the second friction pair are spherical friction pairs, and the lower support plate 6 is provided with a lateral limit shear pin 16 constraining the second friction pair. A bottom plate 8 is arranged below the lower support plate 6 , and a plane sliding friction pair is formed between the bottom surface of the lower support plate 6 and the top surface of the bottom plate 8 and a third wear-resistant plate 7 is provided. The cross bridge of the lower support plate 6 is provided with a speed locker 12 to the outside, and the speed locker 12 is fixedly connected with the lower support plate 6 and the base plate 8 .

When the relative sliding speed of the support is slow, the speed locker 12 does not work, allowing it to slide freely. When the bridge vibrates greatly due to factors such as wind force, braking force, and earthquake, the speed locker 12 takes effect when the bearing slides rapidly, and locks the lower bearing plate 6 and the bottom plate 8 to share part of the horizontal load. Afterwards, the transverse limit shear pin 16 on the lower support plate 6 is sheared off, and the second friction pair can realize longitudinal and lateral swing energy consumption, reduce the vibration frequency of the beam body, and reduce the damage effect of the earthquake on the upper beam body. The lateral limit shear pin 16 is in the form of a necked-in mouth, which ensures accurate and effective shearing during strong earthquakes. The spherical crown liner 4 is a double-spherical structure, which realizes the displacement and rotation of the beam body.

Referring to Fig. 1, the center of the bottom plate 8 is provided with a guide rail 14 extending along the bridge direction, and the bottom of the lower bearing plate 6 has a guide groove corresponding to the guide rail 14, so as to realize the separate replacement of the speed locker 12 without Affect the use of the support.

The above is just to illustrate some principles of a non-lifting two-way shock-absorbing friction pendulum bearing of the present invention, not to limit the present invention to the specific structure and scope of application shown and described, so any All corresponding modifications and equivalents that may be utilized belong to the patent scope of the utility model application.

Claims (2)

1. without a lifting bidirectional damping friction pendulum support, including upper bracket plate (2), undersetting Plate (6) and be positioned at spherical crown liner plate (4) between the two, upper bracket plate (2) lower surface serves as a contrast with spherical crown There is between plate (4) upper surface the first friction pair and be provided with the first wearing plate (3), spherical crown liner plate (4) there is between lower surface and lower support plate (6) upper surface the second friction pair and to arrange second wear-resisting Plate (5), is characterized in that: described first friction pair, the second friction pair are sphere friction pair, undersetting The spacing shear pin (16) that second friction pair is formed constraint is set on plate (6)；Described lower support plate (6) lower section is provided with base plate (8), shape between lower support plate (6) bottom surface and base plate (8) end face Become planar slide friction pair and be provided with the 3rd wearing plate (7)；The direction across bridge side of lower support plate (6) The outer speed lockup's device (12) that arranges, speed lockup's device (12) and lower support plate (6), base plate (8) Fixing connection.

2. as claimed in claim 1 a kind of without lifting bidirectional damping friction pendulum support, its feature It is: the central authorities of described base plate (8) are provided with along suitable bridge to the guide rail (14) extended, lower support plate (6) Bottom there is the gathering sill corresponding with this guide rail (14).