依托大同至西安客运专线渭洛河特大桥的钻孔灌注桩工程，选择有代表性的地段开展了钻孔灌注桩施工现场试验，合理优化了成孔、清孔、钢筋笼加工制作、混凝土浇筑等工序的施工工艺，并根据优化成果提出了适用于客运专线钻孔灌注桩的施工参数，为类似工程的桩基础施工提供了参考依据。%Based on the bored piles of Datong to Xi’an passenger dedicated line Weiluo river extra large bridge,this article reports the field test of the pile foundation construction carried out in the choose typical section,optimized hole forming,hole cleaning,processing production of rein-forcing cage,concrete pouring,and many other construction techniques suitably. The reasonable construction parameters of bored piles of passen-ger dedicated line was put forward on the basis of the preceding summing up and optimization,providing reference for similar projects of pile foun-dation construction.
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