布袋注浆桩施工技术改进

Improvement on Construction Technology of Bag Grouting Pile

东南沿海某铁路软基处理工程,由于部分路基处于滨海冲积平原,因此在局部地段采用布袋注浆桩新技术对淤泥土层加固。介绍布袋注浆桩发展现状、工艺原理、工艺特点、改进后的施工工艺。结果表明,采用改进后的振动沉管法具有成本低、工效高和工序简单等优点。通过改进施工技术,简化了布袋注浆桩的工艺流程,提高了工效,节省了工程投资。

Based on soft foundation treatment of some railway in southeast coast area,bag grouting pile is adopted in partial segment because partial roadbed locates in coastal alluvial plain.The development,technology principles,characteristics and improved technology of bag grouting pile are introduced.The results show that there are many advantages of low cost,high performance,simple process in improved vibration compaction method.Besides,after the construction technology is improved,technology process of bag grouting pile is simplified and efficiency is enhanced,which can save engineering cost.