Interface Mechanical Behavior of Flexible Piles Under Lateral Loads in OWT Systems
作者机构：School of Civil Engineering and ArchitectureJiangsu University of Science and TechnologyZhenjiang 212003China School of Civil EngineeringSoutheast UniversityNanjing 210096China Key Laboratory of Concrete and Prestressed Concrete Structures of the Ministry of EducationSoutheast UniversityNanjing 211189China
出 版 物：《China Ocean Engineering》 (中国海洋工程（英文版）)
年 卷 期：2023年第37卷第3期
页 面：484-494页
核心收录：
学科分类：0820[工学-石油与天然气工程] 08[工学] 0807[工学-动力工程及工程热物理] 0818[工学-地质资源与地质工程] 0903[农学-农业资源与环境] 0814[工学-土木工程] 0812[工学-计算机科学与技术（可授工学、理学学位）]
基 金：financially supported by the National Natural Science Foundation of China (Grant Nos.52201324,52078128,and 52278355) the Natural Science Foundation of the Jiangsu Higher Education Institution of China (Grant No.22KJB560015)。
主 题：flexible piles interface mechanical behavior initial stiffness p-y curves offshore wind turbine systems
摘 要：This paper investigates the interface mechanical behavior of flexible piles with L_p/D10 under lateral load and an overturning moment in monotonic loading conditions.To modify the beam-on-Winkler-foundation model of piles in offshore wind farms,the energy-based variational method is used.The soil is treated as a multi-layered elastic continuum with the assumption of three-dimensional displacements,the pile modeled as an Euler-Bernoulli beam.A series of cases using MATLAB programming was conducted to investigate the simplified equations of initial stiffness.The results indicated that the interaction between soil layers and the applied force position should be taken into account in calculating the horizontal soil resistance.Additionally,the distributed moment had a limiting effect on the lateral capacity of a flexible pile.Moreover,to account for the more realistic conditions of OWT systems,field data from the Donghai Bridge offshore wind farm were used.
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