大型油罐桩筏基础有限元分析

The FEM analysis of pile-raft foundation of large oil tank

对变厚度油罐筏板采用16节点实体退化单元进行有限单元法分析.计算结果证明,应用16节点退化实体单元能大大减少了单元数目,大幅度提高了计算效率,并能达到相当高的精度.该研究结果适合大型油罐桩筏基础的计算,具有广泛的应用前景.

The 16\|node degenerated plate element is applied to analyze the variable thickness raft of oil tank using the methods proposed by paper. The calculation shows that the degenerated element can give very good result with less number of elements than regular plate element, and is very suitable for irregularly shaped raft. Another advantage is that the element can easily take the horizontal stiffness of pile or/and foundation into account.