杂填复合土地基加固的现场检测分析

Field Testing and Analysis of Reinforcement on Miscellaneous Filled Ground

依托青岛某地基处理工程,对上覆杂填土的淤泥质土地基进行加固,现场检测其加固效果.通过对夯击过程中超静孔隙水压力随时间的变化规律及在不同性质土层中的增长及消散规律的分析,计算了超静孔压的消散,提出了确定强夯夯点间距、有效加固深度及两遍夯击间隔时间等施工参数的方法及优化.

The ground consisting of a sandy silt layer covered with the miscellaneous filled soil was reinforced in the construction of the ground of a major project in Qingdao and the on-site inspection of its reinforcement effect conducted.Through the analysis of the variation at different time,and the increasing and dissipating regularity of excess pore water pressure in different soil layers,this paper calculates the dissipation of the excess pore water pressure and presents the construction parameter and its optimization determining the appropriate impact space,the effectively strengthened depth and the reasonable interval between two impact passes.