西安地区钢筋混凝土钻孔灌注桩试桩试验研究

摘要

针对西安市三环路系统工程特点和建设场地岩土工程条件，选择有代表性的三个场地进行大直径、大吨位钢筋混凝土钻孔灌注桩试桩试验研究。通过试桩试验确定了单桩竖向抗压极限承载力和桩周土极限侧摩阻力等参数。经过对试验结果的分析研究，对工程桩基的设计、施工提出了科学合理的建议。%According to the characteristics of the system engineering of the Third Ring Road in Xi ’ an city and the geotechnical conditions of construction site ,the trial pile tests were carried out on the typical three sites with large diame-ter and large-tonnage reinforced concrete drill-hole pile.The parameters,such as vertical resist compression ultimate bearing capacity and the ultimate friction resistance of single pile ,were determined.In addition,the suggestions to con-structing and design of boundation piles were proposed based on the analysis of the experimental results .