素土挤密桩消除湿陷性黄土湿陷性研究

Study on eliminating collapsibility of collapsible loess by plain soil compacted pile

根据冀北地区工程实例,采用素土挤密桩的方法处理湿陷性黄土的湿陷性,通过现场钻孔取样,采用室内试验方法测定了经素土挤密桩处理后土样的压缩系数、压缩模量、压实系数、挤密系数、湿陷系数等主要数据指标。通过试验测得数据验证了素土挤密桩可有效提高湿陷性黄土的压缩模量,降低压缩性,对消除湿陷性黄土的湿陷性具有显著效果。

According to engineering examples in northern Hebei, the method of plain soil compaction piles was used to treat the collapsibility of collapsible loess, and the compressibility of the soil samples treated with plain soil compaction piles was measured by on-site drilling sampling and indoor test methods. Compression modulus, compaction coefficient,compaction coefficient, collapsibility coefficient and other main data indicators. The data obtained through the test verify that the plain soil compaction pile can effectively increase the compressive modulus of collapsible loess, reduce the compressibility, and has a significant effect on eliminating the collapsibility of collapsible loess.