Development of safe and reliable real-time remote pile penetration and rebound measurement system using close-range photogrammetry

Pile penetration and rebound amount measurements during pile driving are important to assess penetration and bearing characteristics and to guarantee assurance of pile installation. traditional manual measurement method of penetration and rebound of piles exposes engineers under unfavorable environment of injury risk and significant vibration and noise. to improve the accuracy of pile penetration and rebound measurements and to ensure safety of engineers during pile driving,the close-range photogrammetry approach was implemented by taking a series of stereo-pair images on a pile using two charge coupled device cameras. from the field implementation,it was found that the newly developed pile penetration and rebound measurement system is accurate,safe,and convenient. � iran university of science and technology 2016.