Field test study of load transfer mechanism of plastic tube pile under embankment loading

被引：0
|
作者：
Zhu B.-E. [1 ]
Qi C.-G. [1 ]
Bao J.-L. [1 ]
机构：
[1] Faculty of Architectural, Civil Engineering and Environment, Ningbo University, Ningbo, 315211, Zhejiang
来源：
Qi, Chang-Guang (qichangguang@163.com) | 2016年 / Academia Sinica卷 / 37期
基金：
中国国家自然科学基金;
关键词：
Load transfer; Mechanical behavior; Negative skin friction; Pile supported embankment; Plastic tube pile;
D O I：
10.16285/j.rsm.2016.S2.083
中图分类号：
学科分类号：
摘要：
The plastic tube pile applied to soft ground treatment of highway, is comprised of pre-driven plastic tube filled with concrete. According to the steel stress gauges embedded in plastic tube pile, the load transfer mechanism of plastic tube pile under embankment load is completely measured during the periods of construction and precompression. And the modified method of steel stress gauge is proposed. The test results show that under the static load of single pile, the axial load of plastic tube pile decreases with the depth increasing, and there is no negative skin friction; under the embankment load, the axial load of plastic tube pile increases first and then decreases, and the distribution of negative skin friction is in the upper 3/5 of pile length; with the increasing of embankment load, the negative and positive skin frictions are gradually increased; however, the location of neutral point of negative skin friction stay the same during the observation period. © 2016, Science Press. All right reserved.
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页码：658 / 664
页数：6
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共 20 条
  • [1] Qi C.-G., Liu G.-B., Wang Y., Et al., A design method for plastic tube cast-in-place concrete pile considering cavity contraction and its validation, Computers & Geotechnics, 69, 9, pp. 262-271, (2015)
  • [2] Chen Y.H., Qi C.G., Xu H.Y., Et al., Field test research on embankment supported by plastic tube cast-in-place concrete piles, Geotechnical and Geological Engineering, 31, 4, pp. 1359-1368, (2013)
  • [3] Qi C.-G., Liu G.-B., Chen Y.-H., Et al., Field testing on the bearing characteristics of plastic tube cast-in-place concrete pile with shaft pre-grouting, Rock and Soil Mechanics, 36, 8, (2015)
  • [4] Qi C.-G., Chen Y.-H., Wang X.-Q., Et al., Time effect of bearing capacity of plastic tube cast-in-place concrete piles, Chinese Journal of Geotechnical Engineering, 37, 9, pp. 1635-1643, (2015)
  • [5] Zuo D.-J., Qi C.-G., Zhang Y.-T., Et al., Field tests on plastic tube cast-in-place concrete piles for reinforcing soft ground of highways, Chinese Journal of Geotechnical Engineering, 35, 9, pp. 1746-1752, (2013)
  • [6] Chen Y.-H., Qi C.-G., Wang X.-Q., Et al., Research on bearing performance of plastic tube cast-in-place single pile, China Journal of Highway and Transport, 25, 3, pp. 51-59, (2012)
  • [7] Xia T.-D., Wang M., Shou X., Et al., Field test study of reinforced embankment supported by cast-in-situ thin-wall tubular piles, Chinese Journal of Rock Mechanics and Engineering, 31, 9, pp. 1929-1936, (2010)
  • [8] Zhang Z.-M., Yu J., Zhang G.-X., Et al., Contrastive experimental analysis of bearing behaviors of PHC pile and precast square piles, Rock and Soil Mechanics, 29, 11, pp. 3059-3065, (2008)
  • [9] Xiang W., Liu S.-Y., Jing F., Et al., Field test research on load transfer law of long soil-cement deep mixing columns with different cross-sections, Rock and Soil Mechanics, 31, 9, pp. 2765-2771, (2010)
  • [10] Feng R.-L., Xie Y.-L., Yang X.-H., Field testing study on stress ratio of pile to soil in composite ground of dry jet mixing piles at Yinjiazhuang-Zhongchuan expressway, Chinese Journal of Rock Mechanics and Engineering, 24, 22, pp. 4190-4196, (2005)
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