瑜璐,张金利,杨庆,杨钢.黏土中鱼雷锚抗拔承载力数值分析[J].海洋工程,2019,37(6):122~129
黏土中鱼雷锚抗拔承载力数值分析
Capacity of torpedo anchor in clay using finite element analysis
  
DOI:10.16483/j.issn.1005-9865.2019.06.013
中文关键词:  鱼雷锚;小变形数值方法;水平承载力;竖向承载力;抗拔承载力  黏土
英文关键词:torpedo anchor  small strain FEM  horizontal capacity  velocity capacity  pull-out capacity  clay
基金项目:国家重点研发计划项目(2016YFE0200100);国家自然科学基金重点项目(51639002);国家自然科学基金面上项目(41572252)
作者单位E-mail
瑜璐 大连理工大学 海岸与近海工程国家重点实验室辽宁 大连 116023 yulu@mail.dlut.edu.cn 
张金利 大连理工大学 海岸与近海工程国家重点实验室辽宁 大连 116023  
杨庆 大连理工大学 海岸与近海工程国家重点实验室辽宁 大连 116023 qyang@dlut.edu.cn 
杨钢 大连理工大学 海岸与近海工程国家重点实验室辽宁 大连 116023  
摘要点击次数: 78
全文下载次数: 34
中文摘要:
      基于Abaqus软件,针对预埋在一定深度鱼雷锚的抗拔承载力进行3D数值分析,探讨了锚型、土体类型、拉拔荷载倾角、拉拔荷载水平分量与锚翼夹角等多种因素对拉拔承载力的影响。计算结果表明:在均质土、正常固结土和两层土体中, 带4个锚翼鱼雷锚增加56.22 m2的锚翼侧面积,其拉拔承载力比无锚翼的提高1.9 倍以上;当锚翼侧面积相同时,增加锚翼的宽度可以有效提高锚的承载力;拉拔荷载倾角α在30°~45°范围内,可获得较大拉拔承载力;锚翼宽度越大,拉拔荷载水平分量与锚翼间的夹角β对鱼雷锚水平承载力影响越明显;经归一化的V-H包络线公式对工程应用中预测鱼雷锚的承载力有一定参考价值。
英文摘要:
      This paper presents a 3D numerical study on the pull-out capacity of torpedo anchor embedded in a predetermined depth using ABAQUS, and a detailed analysis is performed based on anchor geometry, soil strength, and pull-out angle (α and β) for holding capacity. The finite element results demonstrate that the capacities of a four-fin torpedo anchor with an additional lateral area of anchor flukes being 56.22 m2 are over 1.9 times more than those of a no-fin anchor in uniform soil, consolidation soil and two-layer soil. For the same surface area of fins, the pull-out capacity can be enhanced with increased width of fluke, and the maximum inclined capacity is demonstrated in an angle between 30° and 45°. At the same time, an angle between the horizontal component of force and the plane of the fins (β) influenceds the horizontal capacity as the fin width increases. The normalized V-H curve formula has some reference values for predicting the capacity of the torpedo anchor in the practical engineering.
查看全文  查看/发表评论  下载PDF阅读器
关闭
海洋工程  版权所有
地址: 南京虎踞关34号 邮编:210024 电话:025-85829332 E-mail: oe@nhri.cn
苏ICP备05007122号