Elastoplastic stress analysis of frozen soil wall based on unified strength theory

被引：0
作者：
Cao X.-Y. [1 ]
Zhao J.-H. [1 ]
Zhang C.-G. [1 ]
机构：
[1] School of Civil Engineering, Chang'an University, Xi'an, 710061, Shaanxi
来源：
Yantu Lixue/Rock and Soil Mechanics | 2017年 / 38卷 / 03期
基金：
中国国家自然科学基金;
关键词：
Elastoplastic analysis; Frozen soil wall; Functionally graded material; Parabolic distribution; Ultimate load; Unified strength theory;
D O I：
10.16285/j.rsm.2017.03.020
中图分类号：
学科分类号：
摘要：
The frozen soil wall can be simplified as the functionally graded material (FGM) thick cylinder with parabolic-distributed elastic modulus and cohesion. In consideration of the intermediate principal stress, the analytical solutions of the elastic ultimate load, the elastioplastic stress field and the plastic ultimate load are derived based on the unified strength theory. The results are further compared with that of a homogeneous model, the influence of the parameters of unified strength theory is investigated as well. The results show that the stress distribution of FGM frozen soil wall differs from that of homogeneous frozen soil wall, especially the circumferential stress changes from linear distribution to parabolic distribution. The maximum circumferential stress appears in the central thickness instead of the inner or outer wall. The elastic ultimate load is higher but the plastic limit load is lower than that of homogeneous frozen soil wall. The elastic ultimate load and the plastic ultimate load, the radial stress and the circumferential stress will increase with the increase of the parameters of unified strength theory. The conclusions can provide theoretical reference for the design of frozen soil wall. © 2017, Science Press. All right reserved.
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页码：769 / 774and809
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共 12 条
  • [1] Li Y., Li D.-W., Chen J.-H., Experimental research on frost heave of artificial frozen clay, Coal Engineering, 47, 2, pp. 126-129, (2015)
  • [2] Cai H.-B., Peng L.-M., Zheng T.-L., Et al., A method for predicting ground surface settlement in the artificial thawing period of tunnel horizontally frozen wall, Rock and Soil Mechanics, 36, 12, (2015)
  • [3] Yang W.-H., Yang Z.-J., Han T., Et al., Elastic design theory of frozen soil wall based on interaction between frozen soil wall and surrounding rock, Chinese Journal of Geotechnical Engineering, 34, 3, pp. 516-519, (2012)
  • [4] Zhang C.-G., Zhao J.-H., Wei X.-Y., Investigation the stress field and displacement field on the frozen wall based on the unified strength theory, Chinese Journal of Underground Space and Engineering, 4, 3, pp. 465-469, (2008)
  • [5] Hu X.-D., Average temperature calculation for the straight single-row-pipe frozen soil wall, Journal of Glaciology and Geocryology, 32, 4, pp. 778-785, (2010)
  • [6] Hu X.-D., Zhao F., She S.-Y., Et al., Equivalent parabolic arch method of average temperature calculation for straight double-row-pipe frozen soil wall, Journal of China Coal Society, 37, 1, pp. 28-32, (2012)
  • [7] Hu X.-D., Shu C., Stress field analysis of functionally graded material frozen soil wall in double- row-pipe shaft freezing, Engineering Mechanics, 31, 1, pp. 145-153, (2014)
  • [8] Hu X.-D., Shu C., She S.-Y., Elastic-plastic analytical solution for functionally graded material frozen soil wall with parabolic property under uniform load, Journal of China Coal Society, 37, 3, pp. 379-384, (2012)
  • [9] Zhao Y., Chen C.-F., Wang C.-Z., An upper-bound limit analysis of the bearing capacity of a capped rigid pile based on unified strength theory, Rock and Soil Mechanics, 37, 6, pp. 1649-1656, (2016)
  • [10] Deng D.-P., Li L., Limit equilibrium analysis of slope stability based on the nonlinear unified strength theory, Rock and Soil Mechanics, 36, 9, pp. 2613-2623, (2015)
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