Influence of Automatic Detection on the Dynamic Response of the Large Diameter Bored Pile

Abstract

Information is the foundation of smart water conservancy, and we must attach great importance to the collection, monitoring and analysis of information; knowledge is the core of smart water conservancy, and new information technology must be applied to strengthen information mining, extraction and knowledge accumulation. The influence of automatic detection on the dynamic response of the large diameter bored pile is analyzed in this study. First, the sediment is considered as a fictitious soil pile and the Rayleigh-Love rod theory is introduced to establish the longitudinal dynamic governing equations for the pile and the fictitious soil pile to approximately consider the three-dimensional effect of the pile. Then, the dynamic governing equation for the surrounding soil is built based on the three-dimensional axisymmetric model. By means of Laplace transform, impedance function recursion and inverse Fourier transform, the dynamic governing equations for the soil-pile system are solved to derive the solution for dynamic response of the pile in the frequency and time domain. Based on the established solution, parameter sensitivity analysis is carried out to portray the three-dimensional effect of the large diameter bored pile and the influence of the thickness, density and longitudinal wave velocity of the sediment on the dynamic response of the pile. Finally, the reliability of the proposed solution is verified by comparing with the measured result.