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热带海洋学报

• • 上一篇    

多层土地基中桩靴穿刺计算方法及工程反演分析

魏鹏1, 雷迪2, 刘士宝1, 杜佃春2, 张友虎2   

  1. 1. 中广核工程有限公司, 广东, 广州 518100;

    2. 东南大学, 江苏, 南京 211189

  • 收稿日期:2025-02-21 修回日期:2025-05-14 接受日期:2025-06-03
  • 通讯作者: 张友虎

Review on Prediction of Spudcan Punch-through Capacity in Multi-layer Soils and Case Study

WEI Peng1, LEI Di 2, LIU Shibao 1, DU Dianchun 2, ZHANG Youhu 2   

  1. 1. China Nuclear Power Engineering Co, Ltd, Guangzhou 518100, China;

    2. Southeast University, Nanjing, 211189, China

  • Received:2025-02-21 Revised:2025-05-14 Accepted:2025-06-03

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摘要： 自升式平台广泛应用于海上风电设施的施工作业。我国近海海上风电场成层土地质广泛发育，当遭遇上硬下软地层时，平台站桩时易发生穿刺事故而造成平台结构损伤，威胁平台及人员安全。对平台站桩过程穿刺风险进行精准评估是自升式平台施工风险管控的重要环节。本文针对自升式平台在多层土地基中的穿刺计算方法进行梳理，根据土层性质及空间竖向分布方式分别总结两层土“砂土-黏土”、“硬黏土-软黏土”，三层土“黏土-砂土-黏土”、“砂土-黏土-砂土”、“软黏土-硬黏土-软黏土”和三层及以上多层土地基中穿刺计算方法的规范计算方法及最新研究进展。在此基础上，利用相应方法对粤东海域风电场站桩过程数据开展反演分析，总结当前多层土地基中自升式平台穿刺计算方法存在的局限，揭示今后多层土地基中穿刺计算方法研究的重点。

关键词: 自升式海上风电安装平台, 多层土, 桩靴, 穿刺, 反演分析

Abstract: The seabed at the construction site of jack-up often consists of highly layered soil. When encountering a hard layer overlying a soft layer, the rapid settlement of the legs can cause structural damage to the platform. This paper reviews the current methods for predicting spudcan punch-through capacity in multi-layered soils including sand-over-clay, stiff-over-soft clays, clay-sand-clay, sand-clay-sand, soft-stiff-soft clays and multi-layer soil with 3 or more layers. Back analysis is conducted by comparing the performance of these methods and field data in the eastern Guangdong sea area to accumulate experience, summarize the limitations of the methods and highlight the future research focus.

Key words: jack-up rig, multi-layer soils, spudcan, punch-through, case study