Abstract
The present study aims at developing a mathematical model to investigate the lateral dynamic response of offshore pipe piles. The lateral vibration characteristics of the pipe pile and the corresponding soil resistance are calculated by the Timoshenko beam theory and Biot’s poroelastic theory, respectively. Considering the field condition of offshore piles, the influence of hydrodynamic pressure, which is derived based on the radiation wave theory, is also considered in the proposed model. The analytical solution for the lateral dynamic impedance of pile head has been determined and then validated by comparing with the experiment results. Numerical discussions are finally conducted to illustrate the influence of inner and outer hydrodynamic pressure, water depth, embedment depth, pile diameter-length ratio on the lateral dynamic impedance and natural frequency of offshore piles. The main findings can be summarized as: (1) the hydrodynamic pressure can significantly affect the first-order natural frequency. If the hydrodynamic pressure is not accounted for, the natural frequency will be obviously overestimated; (2) the inner water of offshore pipe piles will overall weaken the dynamic stability of the offshore pipe piles resisting to lateral dynamic loading.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
