Support with shock isolation device for large-span continuous beam

Abstract

The invention discloses a support with a shock isolation device for a large-span continuous beam. The support comprises an upper plate, a spherical crown liner plate, a curved plate and a lower platefrom top to bottom in sequence, wherein a plane sliding plate is arranged between the bottom surface of the upper plate and the top plane of the spherical crown liner plate, a transverse bridge direction limiting structure is arranged on the bottom surface of the upper plate to limit the two transverse bridge direction sides of the spherical crown liner plate, an upper spherical sliding plate is arranged between the spherical surface of the bottom of the spherical crown liner plate and the concave surface of the top of the curved plate, a lower spherical sliding plate is arranged between the curved surface of the bottom of the curved plate and the concave surface of the top of the lower plate, and a longitudinal bridge direction limiting structure is arranged on the lower plate to limit the two longitudinal bridge direction sides of the curved plate. According to the support, the normal use function of a bridge can be met, and the transverse shock absorption function is achieved.

Description

technical field [0001] The invention relates to a support with a shock isolation device for a large-span continuous beam, which belongs to the technical field of roads and bridges. Background technique [0002] With the continuous advancement of national railway construction, many railway lines have to pass through high-intensity earthquake areas, which requires that bridges need to be designed for shock absorption during construction. [0003] At present, friction pendulum bearings or viscous dampers are generally used on bridges to realize the damping function in many ways. The viscous damper can only achieve shock absorption in a single direction (generally the longitudinal direction); while the friction pendulum bearing will cause the vertical displacement of the bridge, which will generate secondary internal force on the super static structure of the bridge, which is not conducive to the stability of the bridge structural system , Friction pendulum bearings are rarely ...

AI Technical Summary

Problems solved by technology

[0005] When the bridge is designed for shock absorption and isolation, the viscous damper is used for shock absorption in the longitudinal direction, and the support itself is used for shock absorption in the transverse direction. The conventional support does not have the function of shock absorption, but the friction pendulum support with the function of shock absorption Cannot be used on railway bridges

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