摘要
扩底桩在当前工业建筑中得到了越来越广泛的应用.本文对扩底桩承载性能进行了试验研究.研究结果表明,当扩底直径D、桩身直径d固定时,总极限侧阻力(kN)所占桩顶极限荷载的百分比随有效桩长L的增大而增大;在其它条件相同时,随着扩底桩直径D的增大,桩的承载力(kN)也变大,但极限端阻力(kPa)随扩底直径的增大却有不同程度的降低;扩底桩桩身直径d和直径桩直径相同、入土长度相当时,扩底桩的承载性能比直径桩的要好、沉降要小.
Today, belled pile is used more and more widely in industry architecture,. This paper has a research on vertical bearing properties of belled pile based on vertical load test. The result shows that when belled diameter（D） and shaft dlameter（d） are the same, ultimate friction（kN） enhances with L increasing; the bearing capacity of belled pile （kN） increases and end resistance（kPa） decreases along with the belled diameter＇s increasing when other conditions are same. Compared with shaft pile, the bearing behavior of belled pile is better than shaft pile, and the settlement is less than shaft pile when the shaft diameter（d） and the length of belled pile in soil are same with the shaft pile.
出处
《新疆大学学报（自然科学版）》
CAS
2007年第3期361-364,378,共5页
Journal of Xinjiang University(Natural Science Edition)
关键词
扩底桩
竖向承载性能
桩侧阻
桩端阻
belled pile
vertical bearing properties
side resistance
end resistance
