摘要
介绍了某工程中人工挖孔扩底桩的竖向静载荷试验情况，揭示了其承载力严重不足的原因。试验结果表明，扩底桩的承载力不仅与桩端尺寸有关，而且还与桩端土的状态有关，土质越软，极限承载力越小。因此，在较软弱的地基上，不宜采用扩大桩端尺寸的办法来提高承载力。
The vertical loading test of man-power digging pedestal pile is discussed through a construction project in this paper, and the reasons for insufficient bearing capacity are analysed. The loading test results show that the ultimate bearing capacity is related with not only its size of the pile tip,but also the state of bearing stratum at pile tip. In conclusion, it is unreasonable to try to improve the ultimate bearing capacity by enlarging the size of pile tip in soft ground.
出处
《郑州工业大学学报》
1998年第3期58-61,共4页
Journal of Zhengzhou University of Technology
关键词
扩底桩
极限承载力
桩端阻力
pedestal pile
ultimate bearing capacity
pile tip resistance
