Calculation of pile-soil stress ratio and settlement of pile-net composite foundation based on elastic foundation plate

被引：4
|
作者：
Zhao M. [1 ]
Liu M. [1 ]
Ma B. [2 ]
Long J. [1 ]
机构：
[1] College of Civil Engineering, Hunan University, Changsha
[2] College of Civil Engineering, Hunan University of Science and Technology, Xiangtan
来源：
Zhongnan Daxue Xuebao (Ziran Kexue Ban)/Journal of Central South University (Science and Technology) | 2016年 / 47卷 / 06期
基金：
中国国家自然科学基金;
关键词：
Double-parameter foundation model; Pile-net composite foundation; Pile-soil stress ratio; Post-buckling; Settlement;
D O I：
10.11817/j.issn.1672-7207.2016.06.026
中图分类号：
学科分类号：
摘要：
The horizontal reinforced mattress was regarded as a thin plate based on the Filonenko-Borodich double-parameter foundation model. Piles and the surrounding soils were simplified as springs with different rigidities. According to static equilibrium of the model, the governing differential equation was established with consideration of the bending and tension of the reinforced mattress and the deformation of the pile and the soil. Using Bessel complex-variables functions, a deformation function of horizontal reinforced mattress was deduced. Then according to the deformation compatibility conditions, the formulas of the pile-soil stress ratio and settlement of the composite foundation were deduced relatively. Finally, two existing cases were employed for calculation and analysis. The influences of the tension force and the pile-soil stiffness ratio on the behavior of the composite foundation were also discussed respectively based on the current solution. The results show that the analysis results of the current solutions has a good agreement with the test results. The pile-soil ratio increases with the increase of the pile-soil rigidity ratio, composite modulus of reinforced mattress and tensile force of geosynthetic. © 2016, Central South University Press. All right reserved.
引用
收藏
页码：2007 / 2014
页数：7
相关论文
共 15 条
  • [1] Wang B., Sub Grade Engineering of High Speed Railway, pp. 1-5, (2007)
  • [2] Han J., Gabr M.A., Numerical analysis of geosynthetic- reinforced and pile supported earth platforms over soft soil, Journal of Geotechnical and Geoenvironmental Engineering, ASCE, 128, 1, pp. 44-55, (2002)
  • [3] Abdullah C.H., Edil T.B., Behaviour of geogrid-reinforced load transfer platforms for embankment on rammed aggregate piers, Geosynthetics International, 14, 3, pp. 141-153, (2007)
  • [4] Cao X., Qing S., Zhou L., Experimental study on reinforcement effect of geogrid on composite foundation with dry jet mixing piles, Chinese Journal of Rock Mechanics and Engineering, 25, pp. 3162-3167, (2006)
  • [5] Yang Y., Research on work mechanism of double direction reinforced composite foundation, pp. 74-77, (2006)
  • [6] Chen C., Zhou Z., Analysis of pile-soil stress ratio for double reinforced composite ground, Rock and Soil Mechanics, 30, 9, pp. 2660-2666, (2009)
  • [7] Abusharar S.W., Zheng J., Chen B., Et al., A simplified method for analysis of a piled embankment reinforced with geosythetics, Geotextiles and Geomemberanes, 27, pp. 39-52, (2009)
  • [8] Rao W., Zhao C., The behavior of pile-soil composite foundation, China Civil Engineering Journal, 35, 2, pp. 74-80, (2002)
  • [9] Zheng J., Zhang J., Ma Q., Et al., Three dementional analysis of pile-earth ratio of biaxial reinforcement composite foundation, Journal of Huazhong University of Science and Technology (Nature Science Edition), 38, 2, pp. 83-86, (2010)
  • [10] Tan H., Liu H., Theoretical analysis of cushion and embankment fills in pile-supported embankment, Rock and Soil Mechanics, 29, 8, pp. 2271-2276, (2008)
12