Optical motion tracking in earthquake-simulation shake table testing: Preliminary results

Abstract

Sensors such accelerometers and displacement transducers are generally used in earthquake-simulation shake table testing to measure the induced motions. In particular the Anti-seismic Structure Laboratory at the Pontificia Universidad Católica del Perú (PUCP) uses LVDT (linear variable differential transformer) sensors, which can achieve accurate measurements. However there are limitations in the number of measuring points; moreover, the required instrumentation is demanding and destructive tests can not be measured with such devices.We present the preliminary results of an optical motion tracking system to measure the induced motions for shake table testing at the PUCP's Anti-seismic Structure Laboratory. 978-1-4244-5827-1/09/$26.00

The Multi-Parameter Wireless Sensing System (MPwise): Its Description and Application to Earthquake Risk Mitigation

“…Several laboratory-based experimental set-ups (e.g., [ 30 , 31 ]) have demonstrated the potential of image-based monitoring. Displacement measurements of high-rise buildings based on conventional imaging have been proposed by [ 32 , 33 ], the latter using high-speed linear cameras, while [ 34 , 35 ] proposed the dynamic monitoring of slender structures using various computer-vision techniques.…”