灰土挤密桩在处治湿陷性黄土地区公路桥头跳车现象中的应用

The Application of Lime Soil Compaction Pile in Treating with Collapsible Loess Area Highway Bridgehead Bumping Phenomenon

桥头跳车是公路运营中常见的路基病害之一,严重影响道路交通运营安全。在湿陷性黄土地区处治桥头跳车现象,产生原因除桥头路基填料本身引起的不均匀沉降外,更重要的是由于湿陷性黄土地基自身的湿陷性。利用灰土挤密桩对湿陷性黄土地区的桥头路基进行处治消除基底黄土的湿陷性,可以极大提高路基强度,降低发生不均匀沉降的可能性,降低桥头跳车路基病害的发生机率。

Using the lime soil compaction pile, this paper introduced the treatment of the bridgehead subgrade base loess collapsibility in the collapsible loess area, which could greatly improve the subgrade strength,reduce the possibility of the uneven settlement occurrence and the occurrence probability of bridgehead bumping subgrade disease.