碎石桩施工“砂沸”现象探讨

On exploration for “sand boiling”in gravel pile construction

论述了碎石桩成桩后出现"砂沸"现象的原因,并对淤泥质土层较厚范围内没有出现砂沸现象,但出现地面隆起,使桩体碎石不易密实的问题进行了分析,指出为达到较好地消除液化的效果,可将碎石桩穿至或者穿透液化层。

The paper indicates the reasons for the sand boiling after the gravel pile construction,and analyzes no sand boiling at the thicker mud-dy soil layer which leads to the uneasy compaction of the pile gravel,so as to eliminate the liquidation and make the gravel pile penetrate the liq-uefied layer.