黄土地区钻孔灌注桩抗拔承载性状的试验研究

Testing study on anti-draw bearing properties of bored cast-in-site pile in loess area

西安黄土地区钻孔灌注桩的抗拔荷载传递机理和承载性状的研究比较缺乏。依据西安某国际文化广场3根试桩的单桩竖向抗拔静载试验数据,分析了灌注桩在受荷时的轴向拉力传递、侧阻力发挥和桩端阻力特性,通过对试验结果的分析讨论,揭示了该地区土层抗拔侧阻力的取值特点以及灌注桩的抗拔承载特性。

The transmission mechanism of load and study on anti - draw bearing properties of bored cast - in- site pile in loess area are very scarce. According to the data of static loading test for three uplift - piles of a international culture square, the transmission of axial pressure, the properties of side resistance and characteristic of tip resistance under of loading are analyzed. By analyzing the test results, the properties of clay layer side resistance are revealed. The analyzed results are instructive for design, construction and the same type of pile.