灰土挤密桩复合地基浸水软化问题探讨

灰土挤密桩在消除黄土湿陷性、提高地基承载力方面具有悠久的历史,且有造价低、施工工期短、工艺简单的优点,因此,在一般轻型工业建筑地基处理当中被广泛应用。本文通过某电厂采用灰土挤密桩方案处理的湿陷性黄土地基挤密前后桩间土压缩性的对比分析,论述了灰土挤密桩复合地基浸水软化问题,阐明了在试验阶段灰土挤密桩深层浸水的必要性,为灰土挤密桩复合地基的应用提供了建设性参考意见。

Discussion on Soften Problems in Practice of Lime-soil Pile

Lime-soil compaction pile has advantages of low cost,short construction period,and technical simplicity and has been applied in eliminating collapsibility and improving bear capability of subsoil with a long history.It is,therefore,widely applied in building industry.After comparison/analysis with the compressibility of the collapsible soil among piles under both natural and compacted conditions with the ground treatment of lime-soil compaction piles for a power plant,in this paper the soften problem of the composite foundation with this compaction piles has been discussed,and the necessity of water immersion in deep depth during the test period,as well as valuable references for the use of composite foundation with this lime-soil compaction piles have been presented.