Abstract: It is considered that little settlement would occur after dynamic consolidation if criterion of stopping tamping is carried out. At the same time, it is difficult to obtain soils’ strain properties after dynamic consolidation, so settlement calculation after dynamic consolidation is often ignored. But during analysis of settlement of Qingyuan third bridge’s highway, it was founded that enough settlement of embankment happens on foundations after dynamic consolidation. So the relation between CPT

Key words: dynamic consolidation, CPT, SPT, compression modulus, settlement calculation, layer-wise summation method

摘要： 在强夯施工中一般认为达到收锤标准后地基不再发生过大的沉降,另外强夯后地基土的变形参数也不易确 定,因而强夯地基一般不进行沉降计算.在广东清远北江三桥一级路沉降观测数据整理时,发现夯后的地基仍有较 大的沉降.笔者总结了原位测试(标准贯入和静力触探)参数与地基土体的变形参数之间的关系式,并通过现场地 基检测的数据反算了地基土的变形参数,最后通过分层总和法计算了路堤的变形沉降.该方法的计算结果能与高 速公路实测沉降相吻合.

关键词: 强夯, 标准贯入试验, 静力触探, 压缩模量, 沉降计算, 分层总和法