岩土力学Issue(2)：591-599,9.DOI:10.16285/j.rsm.2015.02.040
砂土海床中大直径单桩水平承载与变形特性
Bearing capacity and deflection behaviors of large diameter monopile foundations in sand seabed
摘要
Abstract
A series of consolidated drained (CD) triaxial compression tests on sand with dilatancy is conducted to obtain mechanical parameters. The behaviors of large diameter monopile foundation in offshore under horizontal loading are analyzed using a three-dimensional finite element model with the finite element software ABAQUS. A lot of parameters, like stress path, friction angle, dilatancy angle and the characteristics of soil-pile surface, are taken into consideration to study the soil structure behavior, which is verified with the centrifuge modeling. Then, a reasonable finite element computational model of large diameter monopile foundation under horizontal loading including the parameter selection method of this model is established. Besides, the deformation is proposed as the control criterion to determine the horizontal bearing capacity of monopile foundation for the offshore wind turbine. With that, the pros and cons of existing methods for analyzing horizontal bearing capacity and deformation of pile foundation are discussed. Finally, it is suggested to determine the critical embedded length of monopile foundation by numerical analysis.关键词
大直径单桩基础/三维数值分析/水平承载特性/砂土Key words
large diametermonopole foundation/three-dimensional numerical analysis/horizontal bearing behaviors/sand分类
建筑与水利引用本文复制引用
刘晋超,熊根,朱斌,应盼盼..砂土海床中大直径单桩水平承载与变形特性[J].岩土力学,2015,(2):591-599,9.基金项目
国家自然科学基金项目（No.51179169）；广东省电力设计研究院科技项目（No.2011-CGSQ-264）；中央高校基本科研业务费专项资金项目（No.2012FZA4019）。 （）
