新型CFG变径倒锥台阶型长螺旋钻孔桩在高速铁路地基加固中的应用和造价分析  

Application and Cost Analysis of New Type CFG Variable Diameter Inverted Cone Stepped Long Spiral Bored Pile in Foundation Reinforcement of High Speed Railway

作　　者：杨丽 YANG Li(China Railway Design Group Co.Ltd Institute of Engineering Economics,Tianjin 300308,China)

机构地区：[1]中国铁路设计集团有限公司工经院,天津300308

出　　处：《铁路工程技术与经济》2021年第6期49-52,共4页Railway Engineering Technology and Economy

摘　　要：本文介绍了一种新型CFG变径倒锥台阶型长螺旋钻孔桩(以下简称变径桩)在高速铁路软土地基加固中的应用,并对其施工原理、施工机械、施工工艺和施工组织进行了详细的说明。通过对其施工过程中工料机的消耗量进行造价分析,测定本设计条件下的造价水平,为后续定额补充提供研究思路和数据参考。This paper introduces the application of new type of CFG variable diameter inverted cone stepped long spiral bored pile(hereinafter referred to as variable diameter pile)as a new foundation treatment method in soft soil foundation of high speed railway,and describes its construction principle,construction machinery,construction technology and construction organization in detail.Through the cost analysis of the consumption of labor,materials and machines in the construction process,the cost level under the design conditions is measured,so as to provide research ideas and data reference for the subsequent quota supplement.

关 键 词：高速铁路 软土地基 CFG变径倒锥台阶型桩 长螺旋钻孔桩 变径桩 造价分析 

分 类 号：F532.3[经济管理—产业经济]