黄土地基中抗拔桩与抗压桩对比试验研究

罗少锋; 杨文星

doi:10.13204/j.gyjz201210018

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黄土地基中抗拔桩与抗压桩对比试验研究

doi: 10.13204/j.gyjz201210018

罗少锋¹,
杨文星²

1.
1. 西安建筑科技大学土木工程学院,西安 710055;
2.
2. 西安科技大学建筑与土木工程学院,西安 710054

详细信息

作者简介:
罗少锋，男，1973年出生，博士研究生，讲师。

计量
- 文章访问数: 75
- HTML全文浏览量: 8
- PDF下载量: 57
- 被引次数: 0
出版历程
- 收稿日期: 2012-02-13
- 刊出日期: 2012-10-20

COMPARATIVE TEST RESEARCH ON UPLIFT PILE AND COMPRESSIVE PILE IN LOESS GROUND

Luo Shao-feng¹,
Yang Wen-xing²

1.
1. College of Civil Engineering,Xi' an University of Architecture and Technology,Xi'an 710055,China;
2.
2. School of Civil Engineering andArchitecture,Xi'an University of Science and Technology,Xi'an 710054,China

摘要

摘要: 通过对4根相同桩长、桩径、位于同一场地的灌注桩在竖向的拔力和压力作用下的对比试验,研究分析黄土地基中的抗拔桩和抗压桩的承载能力和位移特性,并对抗拔桩桩周地表的变形进行分析。结果表明,在相同的桩顶荷载作用下,抗拔桩桩顶上拔量大于抗压桩桩顶沉降量,当抗拔桩的上拔荷载大于1 100 kN后,侧阻力迅速退化。随着荷载的增加,抗拔桩上部侧摩阻力变化较小,而在桩身下部,侧阻增长较快。抗拔桩在2 900 kN的上拔荷载下,在距试桩中心3.667倍桩径处,地表仍有0.2 mm的隆起变形。
- 抗拔桩 /
- 抗压桩 /
- 黄土地基 /
- 侧摩阻力
Abstract: Based on the vertical-compressive load and uplift load test of four bored piles with same diameter and length in the same ground,the bearing capacity and displacement behavior of uplift piles and compressive piles in loess ground were discussed.The results indicated that the displacement of the uplift piles was large than that of the compressive piles.The lateral friction was weakened rapidly when the uplift load was large than 1 100 kN.The lateral friction on the upside of compressie pile rarely changed while that of the lower part increased rapidly.There was still deformation of 0. 2 mm on the ground at the place 3. 667 times pile's diameter away from the pile axis when the uplift load reached 2 900 kN．
- uplift pile /
- compressive pile /
- loess ground /
- lateral friction