大型储罐粉砂地基强夯工程试验研究

Experimental study of dynamic compaction on silt sand foundation building of large scale storage tanks

对用于建设某大型石油储罐的粉砂地基分区选择不同能级强夯工程进行试夯试验.夯后采用浅层平板载荷试验、重型动力触探试验、瑞利波试验对处理的地基进行效果检测,结果表明,粉砂地基经强夯处理后承载力、压缩模量等明显提高,沉降明显减小,地基各项力学性能指标均能满足设计要求,证明试夯采用的强夯设计参数正确、施工工艺合理,为大面积强夯施工提供指导.

To improve silt sand foundation to build large scale storage tanks at different dynamic compaction energy levels, this paper takes a tamping test after dynamic compaction by using plate loading test, heavy dynamic penetration test, Ray Leigh wave test. The test proves that the ground bearing capacity and modulus of compression are improved evidently, settlement decreases substan tially after dynamic compaction, and the mechanical property of silt sand foundation meets design requirement. It＇s proved that the design parameters of dynamic compaction are correct, and the construction technology is reasonable. The parameters of dynamic compaction on silt sand founda tion can supply instructs for the similar engineering.