Full 3D Displacement Measuring System for 3D Displacement Field of Soil around a Laterally Loaded Pile in Transparent Soil
Publication: International Journal of Geomechanics
Volume 19, Issue 5
Abstract
An improved three-dimensional (3D) displacement measuring system that uses the particle image velocimetry (PIV) technique was developed to measure the full 3D displacement fields around a laterally loaded pile in transparent soil. The reconstructive procedure of 3D displacement fields includes calculation of the two-dimensional (2D) displacement fields, interpolation of 2D displacements, reconstruction of 3D displacement vectors in the intersection points, and interpolation of 3D displacement in the unknown points. A supplementary particle test was conducted to verify the reconstruction of the three components of the displacement of the particles. A model test of a laterally loaded pile in transparent soil was performed to obtain the full 3D soil displacement fields around the pile. The results show that the magnitudes of the displacement vectors and the angles with respect to the x-axis between the displacement vectors obviously decreased not only as the depth increased but also as the distance from the edge of the pile increased. It is highlighted that the depth of the point with the maximum displacement was decreased with respect to the increase in distance from the edge of the pile. This study helps to better understand the interior soil behavior around a laterally loaded pile. The test demonstrates that the full 3D displacement system is suitable for monitoring soil–structure interaction.
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Acknowledgments
The authors gratefully acknowledge the support provided by the National Natural Science Foundation of China (51308164, 51774107, and 41472279); the Science and Technology Plan Project of Guangdong Provincial Department of Transportation (2017-02-018); the Guangdong Natural Science Foundation (2018A030313839 and 2016A030310345); and the Opening Project of State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology (KFJJ19-02M). The editorial help from Professor Galen Leonhardy of Black Hawk College is also greatly appreciated.
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Published In
International Journal of Geomechanics
Volume 19 • Issue 5 • May 2019
Copyright
© 2019 American Society of Civil Engineers.
History
Received: Dec 12, 2017
Accepted: Nov 19, 2018
Published online: Feb 25, 2019
Published in print: May 1, 2019
Discussion open until: Jul 25, 2019
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