钻孔灌注桩循环成孔工艺比较

COMPARISON OF CIRCULATING FORMING PROCESS OF BORED PILES

以科特迪瓦阿比让体育场项目为例,对正循环成孔桩(设计试桩)和反循环成孔桩(工程桩)的成孔参数及桩的承载特性进行比较和分析,结果表明,反循环成孔工艺成孔比正循环成孔效率高,资源消耗少,综合造价低,成孔质量稳定,扩孔小,沉渣少,二次清孔工作量降低,单桩承载力较高且其离散性较小。

In order to study the difference between normal and reverse circulation drilling process, taking the Abidjan Stadium Project of Cote d'Ivoire for example, to procesd with comparison and analysis of the pore forming parameters and bearing behavior of normal circulating bored pile (design pile) and reverse circulation bored pile (engineering pile). The results show that compared with the normal circulation, the reverse circulation drilling process has the advantages of high pore forming efficiency, less resource consumption, low comprehensive cost, stable pore forming quality, small hole enlargement, less sediment, and less work of clear holes for the two time, and the bearing capacity of single pile is high, and its dispersion is smaller.