焦荥黄河大桥大直径超长钻孔灌注桩承载力分析

Analysis of Bearing for Bored Pile of Large Diameter Over Length on Jiao Xing Yellow River Bridge

基于焦作至荥阳黄河大桥基桩的单桩竖向抗压静载试验,对超长大直径基桩承载力进行了分析。结果表明,跨黄河桥大直径超长桩的承载力相较于中长、短桩的承载力性状有明显的差异,超长大直径基桩承载力在满足设计荷载的情况下仍有较大的余量。

Based on the field test of single pile in sand under vertical load in Jiao xing Yellow river bridge,the bearing of large diameter over length bored pile in the Yellow river bridge was studied. Significant differences on bearing were found in bored pile of large diameter over length with medium length or short ones. There are a lot of surpluses for bored pile of large diameter over length in case of fulfilling requirements of the design load.