QUAKEPROOF BRIDGE Russian patent published in 2015 - IPC E01D19/04 E01D18/00 

FIELD: construction.

SUBSTANCE: bridge includes intermediate and coastal supports, spans, which rest against supports via movable support parts, besides, in support parts of the span, intermediate and coastal supports there are coaxial grooves with moulding edges and a horizontal square bottom in the form of high-strength metal cells, inside of which there are metal support balls with the capability of their free movement in individual coaxial cells of the span and supports of the bridge. Between the top of supports and the bottom of the span there is a slot, and between the end of the span and the coastal support there is a gap equal to the value of the seismic horizontal movement of earth surface, which is covered with a shaped metal board, one end of which is fixed to the coastal support, and the other one freely rests onto the upper surface of the span by means of metal support balls placed inside coaxial cells of the board and the bridge span.

EFFECT: increased stability to deformation, operational reliability and durability of operation under considerable seismic impacts, simplified assembly connections of a span with bridge supports.

1 dwg