Three-dimensional modified Cam-clay model for structured soils

被引：0
|
作者：
Li H.-Z. [1 ]
Zhang Z.-L. [1 ]
Liao H.-J. [1 ]
Song L. [1 ]
Xu J.-T. [1 ]
机构：
[1] Department of Civil Engineering, Xi'an Jiaotong University, Xi'an
来源：
Yantu Gongcheng Xuebao/Chinese Journal of Geotechnical Engineering | 2022年 / 44卷
关键词：
constitutive model; critical state line; structure; three-dimensional stress state;
D O I：
10.11779/CJGE2022S1003
中图分类号：
学科分类号：
摘要：
The mechanical behaviors of soils are dependent upon the structure and the stress state. Based on the unified strength theory, the unified strength parameters are proposed by introducing Lode's angle into the unified strength theory. The critical state line is modified by considering the effect of the intermediate principle stress under the framework of the critical state concept. The effects of structure are introduced into the yield function of the modified Cam-clay model. The non-associated flow law is adopted. The equation for dilatancy stress is determined. A structural constitutive model that can reflect the effects of the intermediate principal stress is proposed. The model is verified by true triaxial tests of a clay. The results show that the proposed model can predict the stress-strain relationships well. © 2022 Chinese Society of Civil Engineering. All rights reserved.
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页码：12 / 16
页数：4
相关论文
共 13 条
  • [1] Yao Yang-ping, Advanced UH models for soils, Chinese Journal Geotechnical of Engineering, 37, 2, pp. 194-216
  • [2] CHAI J C, MIURA N, ZHU H H, Et al., Compression and consolidation characteristics of structured natural clay[J], Canadian Geotechnical Journal, 41, 6, pp. 1250-1258, (2004)
  • [3] LIU M D, CARTER J P., A structured Cam Clay model[J], Canadian Geotechnical Journal, 39, 6, pp. 1313-1332, (2002)
  • [4] SUEBSUK J, HORPIBULSUK S, LIU M D., Modified Structured Cam Clay: a generalised critical state model for destructured, naturally structured and artificially structured clays[J], Computers and Geotechnics, 37, pp. 956-968, (2010)
  • [5] NGUYEN L, FATAHI B., Behaviour of clay treated with cement & fibre while capturing cementation degradation and fibre failure–C3F Model[J], International Journal of Plasticity, 81, pp. 168-195, (2016)
  • [6] SHEN Zhu-jiang, Mathematical model of soil structure––the core problem of soil mechanics in 21st century, Chinese Journal of Geotechnical Engineering, 18, 1, pp. 95-97, (1996)
  • [7] SHEN Zhu-jiang, A masonry model for structured clays, Rock and Soil Mechanics, 1, pp. 1-4, (2000)
  • [8] ZHANG Yu-wei, WENG Xiao-lin, SONG Zhan-ping, Et al., A modified Cam-clay model for structural and anisotropic loess, Rock and Soil Mechanics, 40, 3, pp. 1030-1038, (2019)
  • [9] XIE Ding-yi, QI Ji-lin, ZHANG Zhen-zhong, A constitutive laws considering soil structural properties, China Civil Engineering Journal, 33, 4, pp. 35-41, (2000)
  • [10] SHAO Sheng-jun, ZHOU Fei-fei, LONG Ji-yong, Structural properties of loess and its quantitative parameter, Chinese Journal of Geotechnical Engineering, 26, 4, pp. 531-536, (2004)
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