强夯法在某大型油罐工程地基处理中的应用

Application of Dynamic Compaction Foundation Treatment in A Large Oil Tank Project

为了解决强夯有效加固深度的计算结果与实际工程存在较大偏差的问题,结合工程实例,通过对工程的试夯和现场原位测试进行分析,得出以下结论:①基于梅纳德(Menard)理论计算的有效加固深度直接用于工程时存在较大偏差,需采用能级修正后才能与工程实际相符合;②不同的夯点布置方式对工程实际的影响不可忽略。

At present strategic petroleum reserve in our country is increasing, and more and more large oil tank is taking place.So widely used dynamic compaction foundation treatment in the large oil tank projects are also increasingly important.However, the theory and practice of dynamic compaction foundation treatment is not yet mature and improve, especially computation of effective reinforcement depth and practical engineering exsists a large deviation.Therefore, effective reinforcement depth calculation method which meet the design of practical engineering has the great significance.The engineering example is used, and through the analysis and research of trial tamping and in-situ test, the result shows that: ①reinforcement depth has a high deviation, which calculated by Maynard formula.Through corrected energy level,reinforcement depth is in accordance with practical engineering; ②The effect of different tamping point arrangements to practical engineering can not be ignored.