含有玄武岩夹层的大型油罐地基工作性能的研究

Research on Behavior of Oil Tank Foundation on Site with a Basalt Layer

在我国一些地区存在第四纪玄武岩，它的存在改变了地基的力学条件，使地基岩土体系复杂化。本文研究了土层中夹有玄武岩的大型油罐地基的性能。国外某公司曾提出来用桩基并穿透玄武岩层方案。本文通过模拟分析论证了在该油罐所处的场地条件下及油罐荷载水平下，储油罐可采用天然地基垫层混凝土环梁基础，而不必采用桩基础的方案在技术上是可行的，并具有显著的经济效益。

Quaternary basalt is often discovered in some area in China.Because of its existence,the mechanical condition of ground is changed and the soil and rock system of construction site is complicated.Authors of this paper have studied the site property of a large-scale oil tank,where exists basalt intercalated bed.A foreign company has put foward a foundation plan of the large scale oil tank.They think that pile foundation should be adoped and gone through the basalt bed.This paper demonstrated the possibility of the large scale oil tank foundation adopting natural ground.Through simulation analysis,it is found out that under the condition of the site and loading level of the large scale oil tank,the foundation of natural ground blanket and concrete ring beam should be adopted.This measure is possible in technology and remarkable in economic benefits。