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单向荷载作用下海上风机多桶基础承载特性数值分析

ISSN号：1005-9865
期刊名称：海洋工程
时间：0
页码：31-35
分类：P751[交通运输工程—港口、海岸及近海工程;天文地球—海洋科学]
作者机构：[1]大连理工大学海岸和近海工程国家重点实验室,辽宁大连116024, [2]大连理工大学土木工程学院岩土工程研究所,辽宁大连116024, [3]中煤国际工程集团沈阳设计研究院,辽宁沈阳110015
相关基金：国家自然科学基金重点资助项目（50639010）;国家自然科学青年基金项目（50909014）;博士学科点专项科研基金（20060141017）
相关项目：波浪作用下海床液化机理及分析方法研究

关键词：桶形基础, 极限承载力, 三维有限元分析, 海上风机, bucket foundation, bearing capacity, three-dimensional finite element analysis, offshore wind turbine

中文摘要：

作为一种新型的深水海上基础型式，桶形基础在海上风机设施设计与建设中逐步得到了发展和应用。以三桶基础为例，采用大型有限元软件ABAQUS对海上风机多桶基础的承载特性进行了三维有限元数值分析。根据海上风机的荷载受力特点，分别探讨了三桶基础在竖向荷载、水平荷载和力矩作用下的极限承载力，得出荷载作用方向及桶间距对极限承载力的影响程度，研究成果为复合加载模式下海上风机多桶基础的承载特性分析奠定了基础。

英文摘要：

As a new type of deep-water offshore foundation, suctional bucket foundation has been gradually used in the design and construction of offshore wind turbines. However, the research results of previous work principally focus on the analysis of stability of single-bucket suctional foundation, and the behavior of beating capacity and joint-work mechanism of multi-bucket suctional foundation have not been well understood, and need further studies to meet the increasing requirement of engineering practice. Based on the framework of FEM software ABAQUS, the three-dimensional numerical analysis for evaluating the bearing capacity behavior of tripod bucket suctional foundation is performed as a special case in this paper. Comparative results are given under vertical loading, horizontal loading and moment, respectively, to investigate effects of loading direction and bucket distance on the ultimate bearing capacity behavior. The corresponding results build up the base for analysis of bearing capacity behavior of multi-bucket suctional foundation under combined loadings.