Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
A study on lateral transient vibration of large diameter piles considering pile-soil interaction
Abstract This study focuses on the three-dimensional (3-D) characteristics of lateral transient vibration of large diameter piles. Firstly, a 3-D pile-soil model in Cartesian coordinate system is established. Then, the governing equations are established. To eliminate the reflected waves from artificial boundaries, the second-order Higdon absorbing boundary condition is applied herein. Based on the boundary and initial conditions, the numerical solution is obtained using staggered grid finite difference method. The reliability of the numerical simulation is corroborated by comparing calculation results with measured data. It is shown that the optimal sensor location for receiving signal is the center of pile top, which is subjected to the minimum 3-D interference. Dynamic stiffness and damping at pile top are investigated by changing the parameters of pile-soil system.
Highlights Waves in large diameter pile of lateral transient vibration are mainly shear waves. The point of minimum 3-D interference is at the center of the pile. The reflected wave's phase of the pile bottom is related to pile length and diameter. Stiffer soil can improve dynamic stiffness of pile top and weaken dynamic damping. Increasing the Young's modulus of pile can improve the dynamic stiffness of pile top.
A study on lateral transient vibration of large diameter piles considering pile-soil interaction
Abstract This study focuses on the three-dimensional (3-D) characteristics of lateral transient vibration of large diameter piles. Firstly, a 3-D pile-soil model in Cartesian coordinate system is established. Then, the governing equations are established. To eliminate the reflected waves from artificial boundaries, the second-order Higdon absorbing boundary condition is applied herein. Based on the boundary and initial conditions, the numerical solution is obtained using staggered grid finite difference method. The reliability of the numerical simulation is corroborated by comparing calculation results with measured data. It is shown that the optimal sensor location for receiving signal is the center of pile top, which is subjected to the minimum 3-D interference. Dynamic stiffness and damping at pile top are investigated by changing the parameters of pile-soil system.
Highlights Waves in large diameter pile of lateral transient vibration are mainly shear waves. The point of minimum 3-D interference is at the center of the pile. The reflected wave's phase of the pile bottom is related to pile length and diameter. Stiffer soil can improve dynamic stiffness of pile top and weaken dynamic damping. Increasing the Young's modulus of pile can improve the dynamic stiffness of pile top.
A study on lateral transient vibration of large diameter piles considering pile-soil interaction
Chang, Xin Min (Autor:in) / liu, Dong Jia (Autor:in) / Gao, Fang (Autor:in) / Lu, Zhi Tang (Autor:in) / Long, Li Li (Autor:in) / Zhang, Jian (Autor:in) / Geng, Xiao (Autor:in)
Soil Dynamics and Earthquake Engineering ; 90 ; 211-220
20.08.2016
10 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
A study on lateral transient vibration of large diameter piles considering pile-soil interaction
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