Main Characteristics

 

General Information

Shaking Table General Information   Full Name of the Shaking Table MESA SÍSMICA TRIAXIAL DO LNEC Abbreviated Name LNEC-3G Designer/Manufacturer LNEC e INSTRON Year of Installation 1995

Shaking Table Description

Type of Shaking Table     Longitudinal X Lateral Y Vertical Z Pitch Roll Yaw Uniaxial - - - - - - Biaxial - - - - - - Multiaxial Y Y Y N/A N/A N/A    Characteristics of the Platform   Size (m×m) 4,6 x 5,6 Weight (kN) 392 Material Steel   Actuators   Tipo of Actuation Hydraulic     Manufacturer Total Force (kN) Number of units/axis Longitudinal INSTRON 1250 1 Lateral INSTRON 750 2 Vertical INSTRON 375 1    Shaking Table Performances   Frequency Range Hz 0,1 – 40,0 Stroke (effective/maximum) Horizontal mmpp 290/400 Vertical mmpp 290/400 Max Velocity (nominal/limit) Horizontal Transversal cm/s 70,1/121,5 Longitudinal cm/s 41,9/72,6 Vertical cm/s 42,4/73,5 Max Acceleration at bare table Horizontal Transversal m/s² 18,75 Longitudinal m/s² 9,38 Vertical m/s² 31,25 Yaw/Pitch/Roll Rotation degrees ° N/A Velocity rad/s N/A Max Overturning Moment kN×m N/A Max Specimen Dead Weight kN 392 Max Compensated Dead Weight kN 392

Characteristics of the Control System

Type of Control   Type of Control Mixed (Analogue/Digital)   Characteristics of the Analogue Part   Manufacturer Instron Type Uni-Variable Units   Characteristics of the Digital Part   Hardware Computer Instron 8580 Control Tower D/A Channels 8 ADC channels – 16 bit A/D Channels Software Designer Instron

Complementary Facilities

Hydraulic System   Electric Power (kW) 330 Flow Rate (kN) 690 Pressure (MPa) 20.7   Bridge Cranes Capacity   No. of Cranes 2 Max Load (kN) 392 Useful Height (m) 8   Access Gates   Number 2 Useful Height (m) 4.5