EARTHQUAKE-PROOF BRIDGE Russian patent published in 2015 - IPC E01D1/00 

FIELD: construction.

SUBSTANCE: invention relates to earthquake protection of bridges. Earthquake-resistant bridge comprises spans, supports and associated seismic isolation devices, at least one of which is designed composite, comprising at least two series-connected elements. At least one of the elements is made flexible, malleable in the horizontal direction and provides a seismic isolation and damping of vibrations at relatively frequent calculated earthquakes attributable to the project (PE), and connection of elements is made sliding and includes friction-moving bolt connections from the package of steel sheets with oval openings, through which the high-strength bolts pass through.

EFFECT: increase of operational reliability and service life of the building, as well as improved efficiency of vibration damping of the bridge support, caused by seismic vibrations in any specified calculated range of the exposure level.

22 cl, 12 dwg