陆上风电咬合桩筒型基础筒裙协同承载能力研究

王海军; 许溁; 邓明基; 郭耀华; 刘昱辉; 高建辉

doi:10.19912/j.0254-0096.tynxb.2023-1717

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太阳能学报 ›› 2025, Vol. 46 ›› Issue (2) : 539-547. DOI: 10.19912/j.0254-0096.tynxb.2023-1717

陆上风电咬合桩筒型基础筒裙协同承载能力研究

王海军^1,2, 许溁², 邓明基³, 郭耀华^1,2, 刘昱辉³, 高建辉³

作者信息 +

STUDY OF COLLABORATIVE BEARING CAPACITY OF BUCKET SKIRT OF SECANT PILED BUCKET FOUNDATION FOR ONSHORE WIND TURBINE

Wang Haijun^1,2, Xu Ying^1,2, Deng Mingji³, Guo Yaohua^1,2, Liu Yuhui³, Gao Jianhui³

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文章历史 +

摘要

基于某工程实例,在咬合桩筒型基础试验样机现场附近场地开展三桩咬合桩现场试桩试验,探究咬合桩在水平向荷载作用下的实际协同承载特性;同时,采用有限元方法,对咬合桩筒裙在咬合面弱化及完全失效情况下的基础承载能力进行了研究。结果表明：在现场试桩试验中,咬合桩在破坏荷载的作用下,桩身仍保持较好的完整性,能整体协同运动,且至少具有4.2倍的安全系数;在保证筒裙为连续整体的前提下,咬合面的弱化对基础承载力及受力变形等方面影响较小;筒裙咬合面的失效则使得筒裙无法很好地协同承载,最终导致基础承载力显著下降。

Abstract

Based on engineering examples, field pile test of three interlocking piles is carried out near the prototype site of secant piled bucket foundation to explore the actual collaborative bearing capacity of the secant pile under horizontal load. Meanwhile, the bearing capacity of the foundation of the secant piled bucket skirt under the condition of weakening and failure of the secant face are studied by using finite element method. The results show that in the field pile test, under the action of failure load, the secant pile still maintains good integrity, which can move together as a whole, and has at least 4.2 times the safety factor. The weakening of the secant face strength has little effect on the bearing capacity and deformation of the foundation under the premise of ensuring the continuous integrity of the bucket skirt. The failure of secant face of the bucket skirt makes it difficult to carry the load synergistically, ultimately leading to a significant decrease in the foundation bearing capacity.

导出引用

王海军, 许溁, 邓明基, 郭耀华, 刘昱辉, 高建辉. 陆上风电咬合桩筒型基础筒裙协同承载能力研究[J]. 太阳能学报. 2025, 46(2): 539-547 https://doi.org/10.19912/j.0254-0096.tynxb.2023-1717

Wang Haijun, Xu Ying, Deng Mingji, Guo Yaohua, Liu Yuhui, Gao Jianhui. STUDY OF COLLABORATIVE BEARING CAPACITY OF BUCKET SKIRT OF SECANT PILED BUCKET FOUNDATION FOR ONSHORE WIND TURBINE[J]. Acta Energiae Solaris Sinica. 2025, 46(2): 539-547 https://doi.org/10.19912/j.0254-0096.tynxb.2023-1717

中图分类号： TU476

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