摘要
针对输电线路掏挖基础上拔过程中基础底板周围土体的大变形问题,基于有限元软件ABAQUS建立了基础与周围均质地基土体共同作用体系的弹塑性有限元数值分析模型,采用ALE法通过变参数计算分析了土性参数、基础埋深与扩大头直径比(H/D)及基础与土接触条件对破坏模式和极限上拔承载力的影响。结果表明,该方法能准确计算和预测输电线路掏挖基础抗拔承载力的实际情况。
Aiming at the large deformation problem of soil around the sole plate during uplift process of excavated transmission lines foundation, finite element software ABAQUS is used to establish elastic-plastic finite element model for analysis of the system of transmission tower foundation and its surrounding homogeneous soil. Arbitrary Lagrangian Eulerian method based alterable parameter is adopted to analyze the effects of soil properties, the ratio of embedment and base radius H/D, and contact conditions between foundation and soil on the failure mode and uplift bearing capacity. The results demonstrate that this method can effectively predict the practical operation of excavated foundation during uplift process.
出处
《水电能源科学》
北大核心
2012年第8期151-154,共4页
Water Resources and Power
基金
中国电机工程学会电力青年科技创新基金资助项目(20110515)
东北电力大学博士科研启动基金资助项目(BSJXM-201108)
关键词
有限元分析
掏挖基础
ALE方法
极限上拔力
破坏模式
finite element analysis
excavated foundation
ALE method
ultimate uplift resistance
failure mode
