首页|海上风电倾斜螺旋群桩基础适用性分析

海上风电倾斜螺旋群桩基础适用性分析

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根据实际工程数据,通过有限元软件进行倾斜螺旋群桩基础与传统高桩承台群桩的设计与选型,并对二者在多种荷载工况的承载特性进行定量对比分析.结果表明:在承载性能方面,螺旋群桩基础竖向承载性能以及抗侧刚度都明显优于普通群桩,在相同的荷载情况下,结构位移和变形都相对很小;从经济指标来看,相同用钢量下,螺旋桩高桩承台基础倾斜率和沉降变形均能满足设计要求,而普通桩高桩承台基础均无法满足,若要满足使用要求需要付出更大的代价,综合经济和工程性能考虑,倾斜螺旋群桩基础是更理想的选择.
Applicability of Tilted Helical Pile Cluster Foundation for Offshore Wind Turbine
According to the actual engineering data,finite element software is used to carry out the design and type selection of tilted helical pile cluster and the traditional pile cluster with pile caps,and a quantitatively comparative analysis is made for their load bearing characteristics under various load conditions.The results show that the tilted helical pile cluster foundation has the vertical bearing performance and lateral stiffness which are significantly better than that of common pile cluster,and the structural displacement and deformation of the former one are relatively small under same load conditions.In terms of economic index,the tilt rate and settlement deformation of the former one can meet the design requirements under same consumption of steel material,but common pile cap foundation cannot meet the requirements,or higher cost has to be born.Thus tilt helical pile cluster foundation applies by taking economy and engineering performance into account.

offshore wind turbinehelical pilepile cappile cluster foundationbearing characteristics

石延杰、王健、陈青山、张浦阳、任建宇

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天津大学水利工程仿真与安全国家重点实验室,天津 300072

天津市政工程设计研究总院有限公司,天津 300051

海上风电 螺旋桩 高桩承台 群桩基础 承载特性

国家自然科学基金项目

51779171

2024

港工技术
中交第一航务工程勘察设计院有限公司

港工技术

影响因子:0.262
ISSN:1004-9592
年,卷(期):2024.61(1)
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