复杂分层土中的吸力锚斜拔承载机理分析  

Analysis of the Bearing Mechanism of Suction Anchors under Inclined Drag Load in Complex Layered Soils

作　　者：熊根 徐健 祝周杰 XIONG Gen;XU Jian;ZHU Zhoujie(New Energy Engineering Institute,PowerChina Huadong Engineering Corporation Limited,Hangzhou 311122,China;College of Civil Engineering and Architecture,Zhejiang University,Hangzhou 311122,China)

机构地区：[1]中国电建集团华东勘测设计研究院有限公司新能源工程院,浙江杭州311122 [2]浙江大学建筑工程学院,浙江杭州311122

出　　处：《海洋技术学报》2025年第1期101-114,共14页Journal of Ocean Technology

基　　金：浙江省“尖兵”攻关研发计划项目(2023C01008)。

摘　　要：吸力锚作为海上新能源项目的可靠锚固基础型式,具有卓越的承载能力和施工便利性。但对于实际工程中经常遇到的复杂分层土况,吸力锚在分层土中的抗拔机理和承载性能极少有相关报道。本文以某风电场实际分层土况为例,利用有限元分析软件ABAQUS建立吸力锚-分层土相互作用模型,进行多角度多系泊深度的斜向拉拔分析,对比不同系泊点深度与不同拉拔角度下的吸力锚失效模式,确定不同拉拔角度下的最佳系泊点位置,并深入探讨了分层土性对土体破坏滑移面发展的影响,最终得到吸力锚在复杂分层土中的斜拉拔承载机理。本文提供了一套具体可行的吸力锚承载力设计方法,能够为吸力锚在海上新能源项目中的应用提供参考。Suction anchors,as a reliable anchoring foundation type for offshore renewable energy,have excellent capacity performance and convenient installation.However,for the complex condition of layered soil in practice,there is few studies related to the anti-uplift capacity of suction caisson in layered soil.This study takes the actual layered soil conditions of a wind farm as an example,utilizing the finite element analysis software ABAQUS to establish an interaction model with the suction anchor founded in layered soil.This study analyses effects of drag angles and padeye depths on uplift capacities,with the corresponding failure modes of suction anchors compared.The optimal positions for mooring points under different tension angles are identified,and the impact of layered soil properties on the soil failure slip surface is investigated.Finally,the mechanism of suction anchors under inclined drag load in complex layered soils is highlighted.This paper provides a set of feasible design methods for the inclined drag capacity of suction anchors,offering a reference for the application of suction anchors in offshore renewable energy industry.

关 键 词：吸力锚 分层土 抗拔承载力 有限元分析 海上风电 

分 类 号：P642[天文地球—工程地质学]