摘要
海上风电场的兴起引起了世界各国的普遍关注,而制约其发展的一个重要因素是基础的设置,提高基础的承载性能对发展海上风电场有重要意义。利用大型通用有限元软件ABAQUS,对单桩基础在水平荷载下的承载性能进行了研究,并分别研究了不同桩径条件、桩内有填筑材料及增加重力式结构对其承载性能的影响,开展了室内试验,证明了数值模拟的可靠性,最终提出了水平承载性能优良的重力式单桩基础形式,并对其作用机制进行了探讨。研究表明,桩径的增大和重力式结构的施加,单桩基础的水平承载性能有了很大提高;重力式单桩基础旋转零点位置上升提高了桩体的刚度,增大了摩擦接触面积并且可以起到分担荷载的作用,可以为基础优化提供参考。
The rise of offshore wind farms caused widespread concern around the world,and an important factor restricting its development is the design of its foundation.How to improve the bearing capacity of the foundation is significant for the development of offshore wind farm.In this paper,the bearing capacity of monopile foundation under horizontal loads were studied using finite element software ABAQUS,the influence of different pile diameter conditions,filling materials and the impact of gravity structure on monopole’s bearing capacity were studied.In order to prove the reliability of the experimental results,the indoor simulation test was carried out.Finally,a new type of gravity monopile foundation was presented,which has an excellent performance under horizontal load.Besides,the new foundations working mechanism was discussed as well.Studies show that the increasing of pile diameter and the gravity structure have greatly improved horizontal bearing capacity of monopile foundation.The gravity structure make the rotation point of pile rise,as a result,pile’s rigidity is enhanced;The gravity structure increase the friction contact area and can play a role in the conversion of load,which can provide a reference for foundation optimization.
作者
潘晨晨
王荃迪
张鹏
刘红军
PAN Chen-Chen;WANG Quan-Di;ZHANG Peng;LIU Hong-Jun(College of Environmental Science and Engineering,Ocean University of China,Qingdao 266100,China;Key Lab of Marine Environmental Science and Ecology,Ministry of Education,Qingdao 266100,China;Shandong Provincial Key Laboratory of Marine Environment and Geological Engineering,Ocean University of China,Qingdao 266100,China)
出处
《中国海洋大学学报（自然科学版）》
CAS
CSCD
北大核心
2019年第S02期99-106,共8页
Periodical of Ocean University of China
基金
国家自然科学基金项目(41572247)
山东省科技攻关项目(2014GGX104007)资助~~.
