The mono-axial shake-table enables the dynamic testing of buildings and large structures weighing up to 140 tonnes, and can reproduce real or generated seismic events. It features a platform measuring 5.6 m x 7.0 m and displacement, velocity and acceleration performances of ±500 mm, 2,000 mm/s and 6.0 g (without specimen) or 1.8 g (with a 60-tonne specimen), respectively. The system relies on a hydraulic system designed to guarantee high performance. This system is characterised by a constant flow rate of 1360 l/min, supplied by eight pumps, and an additional flow rate, if necessary, supplied by five accumulator units.
The table has a cellular steel structure with high rigidity and low mass characteristics, which are compatible with the stresses generated by structural tests. It slides on hydrostatically supported guides to ensure minimum friction.
Shake-table 1D | 140 t
Technical Details
Platen dimensions | 5.6 m x 7.0 m |
Maximum displacement | ± 500 mm |
Maximum velocity | 2200 mm/s |
Maximum acceleration (bare table) | 6.0 g |
Maximum acceleration (with 60 t payload) | 1.8 g |
Maximum flow rate | 11000 l/min |
Maximum dynamic force | 1720 kN |
Maximum static force | 2150 kN |
Maximum payload | 140 t |
Maximum overturning moment | 4000 kNm |
Reaction mass | 2350 t |
Guide friction | 350 N |
First natural frequency | 84 Hz |