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基于p-y曲线法对可伸缩桩侧向承载力的研究
Analysis about the lateral capacity of the telescopic pile based on p-y curve method
纪传鹏1,2,3, 徐胜文1,2,3, 汪学锋1,2,3, 丁爱兵1,2,3, 刘晓雷1,2,3
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作者单位:1. 上海交通大学 海洋工程国家重点实验室, 上海 200240;
2. 高新船舶与深海开发装备协同创新中心(船海协创中心), 上海 200240;
3. 上海交通大学 船舶海洋与建筑工程学院, 上海 200240
中文关键字:可伸缩桩;p-y曲线;侧向承载力;三维有限元分析
英文关键字:telescopic pile; p-y curve; lateral capacity; 3D FEA
中文摘要:本文提出一种适用于浅水域平台的新型定位装置,具体来说,是在平台上布置一定数量的可伸缩桩来插入海床以抵抗平台受到的外部载荷。本文主要基于有限元方法,通过Abaqus软件对该定位装置的可伸缩桩的侧向承载能力进行数值计算研究。分别用三维有限元法和p-y曲线法分析桩的位移响应,验证了p-y曲线法的准确性。比较3-4-5-6 m可伸缩桩与3 m和4 m桩径均匀桩的侧向承载力,结果显示3-4-5-6 m可伸缩桩承载力与4 m桩径均匀桩相近。通过模型试验获得平台的水平方向水动力载荷并分析可伸缩桩的动力响应。本文通过数值计算得出该新型定位装置的可伸缩桩侧向承载力表现较好,该定位装置值得进一步研究并考虑用于工程应用中。
英文摘要:A novel positioning facility suitable for platforms deployed in shallow water is proposed. Based on FEM, the lateral capacity of the telescopic in this novel positioning facility is investigated by ABAQUS. The accuracy of the p-y curve method is verified by comparing the displacement of the pile calculated by 3D FEA and p-y curve method. The lateral capacity of the uniform piles with diameter of 3m and 4m and the 3-4-5-6 m telescopic pile are compared. The results show that the lateral capacity of the 3-4-5-6 m telescopic pile is similar to the 4m uniform pile's. The telescopic pile model is loaded the hydrodynamic load of the platform obtained from the model test to investigate the pile's dynamic response. In this paper, the lateral capacity of the telescopic is proved well through numerical simulation. The novel positioning facility deserves further research for practical application.
2019,41(9): 26-31 收稿日期:2018-07-03
DOI:10.3404/j.issn.1672-7649.2019.09.005
分类号:TU473
基金项目:工信部高技术船舶科研项目,国家自然科学基金资助项目(51709170);国家重点研发计划(2016YFC0303405);上海市青年科技英才扬帆计划(17YF1409700)
作者简介:纪传鹏(1993-),男,硕士研究生,主要从事可伸缩桩定位装置有限元研究
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