摘要
针对变直径独立桩在风、浪、流联合作用下的受力特性进行研究,以埕岛油田CB11F平台处的某一变直径立管桩为例,应用有限元软件ANSYS进行了有限元分析,分析过程中考虑环境荷载、土壤条件及变直径位置等因素对结构响应的影响,对光滑渐变的锥形体变径段进行合理地简化,得到了变径桩在波流作用下的桩顶位移和桩身应力,并与通长桩的计算结果进行比较,结果表明,变径桩的位移和应力减幅都大于20%,充分验证了变径措施在降低独立桩位移和减小桩身应力方面的有效性。
Research on the mechanical properties of variable diameter independent pile under the combined action of wind,wave and flow is carried out. Take a variable diameter independent pile in CB11F platform of Chengdao oilfield for example,simulative analysis is performed using the finite element software ANSYS ,considering the influence for some factors to structure response,that is environmental load,soil conditions and variable diameter position. The variable diameter part of the smooth gradient cone is simplified reasonably,getting the top of the displacement and the whole body stress of variable diameter pile under wave and flow actions,comparing with the result of non-variable diameter pile. The results show that the displacement and stress of variable diameter pile decrease more than 20%,the measure adopted in this paper about decreasing the displacement of independent pile and the stress of whole body is validated.
出处
《科学技术与工程》
2010年第25期6244-6247,6256,共5页
Science Technology and Engineering
关键词
海洋工程
变直径
独桩平台
水平承载力
有限元分析
ocean engineering variable diameter single pile platform horizontal bearing capacity finite element analysis
