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    Studies from Hohai University Yield New Data on Computers and Geotechnics (Vertical Dynamic Interaction Factors for Offshore Thin-walled Pipe Piles)


    May 13, 2022 - Computer News Today

     

      2022 MAY 12 (NewsRx) -- By a News Reporter-Staff News Editor at Computer News Today -- Fresh data on Computers and Geotechnics are presented in a new report. According to news reporting originating from Nanjing, People’s Republic of China, by NewsRx correspondents, research stated, “With the development of offshore wind power in deep water, jacket foundations are increasingly used. These piles are always thin-walled pipe piles, whose dynamic interactions are different from onshore pile groups in several ways; for example, scour may develop around the piles, which may reduce a single pile’s impedance, the dynamic interactions between piles and the impedances of pile groups.”

      Financial supporters for this research include Key Project of NSFC-Shandong, National Natural Science Foundation of China (NSFC), Natural Science Foundation of Jiangsu Province.

      Our news editors obtained a quote from the research from Hohai University, “Jacket foundations are usually exposed to marine dynamic loads and are likely to experience vertical and rocking vibrations. Both kinds of vibrations are related to the vertical dynamic interaction between piles, which are the focus of this study. The effects of soil rigidity, soil permeability, pile spacing, excitation frequency, scour type and scour depth on dynamic vertical interaction factors are studied in this paper by a rigorous semi-analytical method. Numerical results for parameter analysis are illustrated, and corresponding simplified closed-form equations to predict dynamic interactions are also deduced. The dynamic interaction factors are then used to study tripod piles and tetrapod piles.”

      According to the news editors, the research concluded: “Dynamic interaction may increase or decrease the pile impedances, mostly depending on the pile spacing ratio and non-dimensional frequency, and closed-form equations are obtained to forecast the amplification or reduction.”

      This research has been peer-reviewed.

      For more information on this research see: Vertical Dynamic Interaction Factors for Offshore Thin-walled Pipe Piles. Computers and Geotechnics, 2022;145. Computers and Geotechnics can be contacted at: Elsevier Sci Ltd, The Boulevard, Langford Lane, Kidlington, Oxford OX5 1GB, Oxon, England. (Elsevier - www.elsevier.com; Computers and Geotechnics - http://www.journals.elsevier.com/computers-and-geotechnics/)

      The news editors report that additional information may be obtained by contacting Jinhai Zheng, Hohai University, Minist Educ Coastal Disaster & Protect, Key Laboratory, Nanjing 210024, People’s Republic of China. Additional authors for this research include Rui He and Jisheng Zhang.

      The direct object identifier (DOI) for that additional information is: https://doi.org/10.1016/j.compgeo.2022.104656. This DOI is a link to an online electronic document that is either free or for purchase, and can be your direct source for a journal article and its citation.

      (Our reports deliver fact-based news of research and discoveries from around the world.)

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