| 于丽萍，温靖，张岚.水下可变构型吸力桩结构设计及沉贯特性研究[J].海洋工程,2025,(3):131~142 |
| 水下可变构型吸力桩结构设计及沉贯特性研究 |
| Study on structural design and penetration characteristics of subsea reconfiguration suction piles |
| 投稿时间：2024-05-08 修订日期：2024-11-13 |
| DOI：10.16483/j.issn.1005-9865.2025.03.012 |
| 中文关键词: 吸力基础 可变构型吸力桩 沉贯特性 贯入阻力 水下管汇 水下生产系统 |
| 英文关键词:suction foundation reconfiguration suction pile penetration characteristics penetration resistance subsea manifold subsea production system |
| 基金项目: |
|
| 摘要点击次数: 7 |
| 全文下载次数: 3 |
| 中文摘要: |
| 吸力基础是水下生产设备的基础结构，深海生产环境的恶劣复杂、水下生产设施的尺寸超大以及安装成本控制的提高，对其设计可靠性和作业中力学特性提出了更高的要求。根据水下生产设施基础的受荷特点提出了一种可变构型吸力桩（RCSP），模块化设计了增固装置，使得该吸力桩兼具可沉贯性好和板锚基础锚重比高的优点；然后通过对桩体的沉贯特性进行理论分析建立了其贯入阻力模型，与常规吸力桩相比，可变构型吸力桩的贯入阻力最大增幅为35.23%，侧摩阻力大于端阻力且端阻力的最大占比约为32.6%；最后通过大变形有限元耦合欧拉-拉格朗日（CEL）方法模拟可变构型吸力桩的静压沉贯过程，分析了增固装置对沉贯阻力的影响以及各分量的变化规律，并与建立的贯入阻力模型进行了对比，验证了理论分析的适用性。该研究为异形截面吸力基础的贯入特性分析提供了新的方法。 |
| 英文摘要: |
| Suction foundations serve as the base structures for subsea production equipment. Given the harsh and complex deep-sea production environments, the oversized dimensions of subsea facilities, and the increasing need for cost-effective installations, higher demands are placed on their design reliability and mechanical performance during operations. Based on the loading characteristics of subsea production facility foundations, a reconfiguration suction pile (RCSP) is proposed, incorporating a modular reinforcement device. This design combines excellent penetrability with a high anchor-weight ratio similar to plate anchors. The penetration characteristics of the pile are analyzed theoretically, and a penetration resistance model of RCSP is established. Compared with conventional suction piles, the maximum increase in penetration resistance for the reconfiguration suction pile is 35.23%, with side friction resistance exceeding end resistance, and end resistance accounting for a maximum proportion of approximately 32.6%. Finally, the static penetration process of the reconfiguration suction pile is simulated using the large-deformation Coupled Eulerian-Lagrangian (CEL) finite element method. The influence of the reinforcement device on penetration resistance and the variation patterns of its components are analyzed, and the results are compared with the established penetration resistance model, verifying the applicability of the theoretical analysis. This study provides a novel approach for analyzing the penetration characteristics of suction foundations with non-standard cross-sections. |
| 查看全文 查看/发表评论 下载PDF阅读器 |
| 关闭 |
