Analytical method for free vibration of steel pipe piles partially submerged in water and penetrated in layered soil

This paper presents a novel analytical method for dynamic characteristics of steel pipe piles submerged in water based on the thin shell theory by using the state space method. The state equation with respect to the length direction is first derived by idealizing the steel pipe pile in water as a thin cylindrical shell, where the soil around the pile is modelled as an elastic foundation with stiffnesses in three directions and the surrounding seawater is considered through added equivalent mass. The governing equations for the free vibration of steel pipe piles are derived after the expansion of Fourier series for the state vectors along the circumferential direction. The frequency equation for free vibration and its corresponding mode shapes are then obtained, which is used to analyze the dynamic characteristics of steel pipe piles in water. Due to the advantage of the state space method, arbitrary boundary conditions of the steel pipe pile are conveniently achieved as well as the effects of seawater, soil, the piling hammer and guiding frame. Finally, the present analytical method is verified and demonstrated in detail by several numerical examples, and results show its simplicity and efficiency.

• Record URL:
  • https://doi.org/10.1016/j.oceaneng.2024.118989
• Record URL:
  • http://www.sciencedirect.com/science/article/pii/S0029801824023278
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/00298018
• Supplemental Notes:
  • © 2024 Elsevier Ltd. All rights are reserved, including those for text and data mining, AI training, and similar technologies. Abstract reprinted with permission of Elsevier.
• Authors:
  • Xu, Rongqiao
  • 0000-0002-0005-9737
  • Zhao, Kexuan
  • Shen, Jiafeng
  • Cai, Jinbiao
  • Wang, Jinfeng
  • Jin, Longlin
• Publication Date: 2024-11-1

Language

• English

Media Info

• Media Type: Web
• Features: References;
• Pagination: 118989
• Serial:
  • Ocean Engineering
  • Volume: 311
  • Issue Number: 0
  • Publisher: Pergamon
  • ISSN: 0029-8018
  • EISSN: 1873-5258
  • Serial URL: http://www.sciencedirect.com/science/journal/00298018

Subject/Index Terms

• TRT Terms: Analysis; Layered soils; Marine engineering; Steel pipe; Support piles; Vibration
• Subject Areas: Bridges and other structures; Marine Transportation;

Filing Info

• Accession Number: 01929128
• Record Type: Publication
• Files: TRIS
• Created Date: Aug 28 2024 5:20PM