Bridge viscous damping shock-absorption supporting seat

Abstract

A bridge viscous damping shock-absorption supporting seat comprises a supporting seat soleplate, an intermediate basin plate, a supporting seat top plate, a steel lining plate and a viscous dampers, wherein the viscous dampers isare installed on the front side and the rear side or the left side and the right side of the intermediate basin plate along the longitudinal direction or the transverse direction of a bridge or installed on the front side, the left side, the right side and the rear side of the intermediate basin plate along the longitudinal direction and the transverse direction of the bridge, two ends of each of the viscous damper are respectively connected with a connection block fixed on a supporting seat soleplate through bolts, the side surface of the intermediate basin plate, which is close to the viscous damper, is provided with a side bayonet, the side bayonet respectively clamps two end surfaces of a viscous damper working cylinder, the supporting seat soleplate is provided with a shearing plate along the longitudinal direction or the transverse direction of the bridge or simultaneously provided with the shearing plate along the longitudinal direction and the transverse direction of the bridge, and the shearing plate is fixedly connected with the supporting seat soleplate through a shearing pin. Due to the adoption of the bridge viscous damping shock-absorption supporting seat, the service life of the viscous damper can be prolonged, no starting rigidness exists under the static situation, no additional internal stress is produced, energy can be consumed rapidly in earthquake, and the acceleration and displacement of the bridge can be reduced.

Description

Technical field [0001] The invention relates to a support used in bridge engineering, in particular to a bridge viscous damping shock-absorbing support. Background technique [0002] In the prior art, the invention patent with the announcement number CN200999392Y discloses a "damping basin-type shock-absorbing rubber bearing". Its main structure is to add a damper to a common basin-type support and to add a damper to the two damper shafts. A sliding plate is set on the end face to protect the damper shaft from damage due to up and down movement. The structure has the following problems: the shaft of the damper is not fixed with the upper plate of the support. When the support slides horizontally and moves up and down, the sliding plates on both ends of the damper shaft are easily crushed and scratched. [0003] Another invention patent with the announcement number CN201588432U discloses a "damping support with a built-in damper", the main structure of which is to set a soft seat b...

AI Technical Summary

Problems solved by technology

Its structure has the following problems: the shaft of the damper is not fixed to the upper plate of the support, and when the support slides horizontally and moves up and down, the slide plates on both ends of the damper shaft are easily crushed and scratched

Its structure has the following problems: the mild steel damper or the lead extrusion damper are all displacement dampers, when the support slides or rotates, the damper will add extra stiffness to the support and the whole structure, thus affecting the support. Other design parameters of the seat and the entire structure (such as period, mode shape, etc.)

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