挤密法处理湿陷性黄土地基主要设计指标探讨

Investigation of main design index of collapsible loess foundation treated with compaction pile

由于不同地区黄土湿陷程度的强弱及挤密法施工工艺的差别,采用相同的孔心距处理湿陷性黄土后形成的复合地基的物理力学性质存在较大的差异,所以挤密法的孔心距、挤密系数及复合地基的承载力特征值等主要设计指标应根据地基处理的目的、黄土的湿陷程度和施工工艺等因素综合确定。

Because of the difference between loess collapsible degree of different areas and the difference in the construction technology of pile,there exists difference in the physical and mechanical properties of the composite foundation formed using the same distance between two holes processing collapsible loess.Therefore,the distances between two hole of pile,the compacting coefficient,the bearing capacity of compound foundation characteristic values and other major design index should be determined based on the purpose of the foundation treatment of collapsible loess,the degree and construction technology comprehensive factors.