摘要：针对目前我国桥梁工程基础设计中运用比较多的AM全液压可视可控旋挖钻孔扩底桩的工艺特点，对其造价进行分析。结合天津市芥园西道立交工程实例，经分析得出扩底桩符合我国节能环保政策要求，建议在条件允许的情况下推广使用。
关键词：扩底桩；造价分析；节能环保；桥梁工程
Abstract：Focusing on the fact that the AM full hydraulic visual controllable rotary drilling under-reamed bored pile technology is frequently-used in the basic design of bridge engineering in China，this paper analyzes engineering cost with the example of Jieyuan west road interchange project in Tianjin，proposes that under-reamed bored pile is in compliance with the requirements of China’s government’s policy of energy conservation and environment protection，and should be recommended in case of promise.
Keywords：under-reamed bored pile；cost analysis；energy conservation and environment protection；bridge engineering
工程经济，2018（02）：05-08