Shake table for forming reinforced concrete structure - has paired single-shaft vibration exciters secured to resiliently supported beams

摘要

The shake table is for forming concrete structures and comprises beams mounted on flexible supports and capable of being rearranged depending on the shape and mass of the structure to be formed. Each of the beams incorporates a pair of resilient elements and a pair of single-shaft vibration exciters, each underlying a related resilient element. The single shaft vibration exciters are so positioned that the shaft axis of each exciter is perpendicular to the longitudinal centre line of the structure being formed. The distance between the shaft axes of the single-shaft vibration exciters secured to any of the beams amounts to from 0.4 to 0.6 of the distance between the centre points of any two neighbouring beams arranged along a common centre line.