旋挖钻机大直径钻孔桩施工方案及单价分析

随着旋挖钻机大直径入岩桩钻孔施工技术的发展,其在铁路工程桥梁基础成孔施工中的应用越来越广。现行铁路工程预算定额缺少大直径钻孔桩旋挖钻机施工相关子目,本文以新建某特大桥桩基施工为例,对旋挖钻机大直径钻孔桩施工进行现场实测,统计工料机消耗,分析不同地层类别旋挖钻机大直径钻孔桩单价。

Construction Scheme and Unit Price Analysis of Large Diameter Rotary Bored Pile

With the development of the construction technology of large diameter rotary bored pile,it is widely used in the construction of railway bridge foundation. The current budget quota for railway projects is lack of the quota related to the construction of large diameter rotary bored pile. the pile foundation construction of Bianyuzhou Yangtze river bridge extra large bridge of Anqing to Jiujiang railway is taken as an example. The construction of large diameter rotary bored pile is measured on site,the statistical analysis of labor,materials and machinery consumption is carried out,and the unit price under different geological conditions is analyzed.