Rock and Soil Mechanics ›› 2025, Vol. 46 ›› Issue (9): 2703-2710.doi: 10.16285/j.rsm.2024.1341

• Fundamental Theory and Experimental Research • Previous Articles     Next Articles

Modified Cambridge model and its parameters for wetting deformation in rockfill materials

ZHOU Xiong-xiong1, 2, HUANG Jia-shuo1, 2, LI Ruo-ting1, 2, ZHANG Jian-yu1, 2   

  1. 1. Key Laboratory of Agricultural Soil and Water Engineering in Arid and Semiarid Areas of Ministry of Education, Northwest A & F University, Xianyang, Shaanxi 712100, China; 2. College of Water Resources and Architectural Engineering, Northwest A & F University, Xianyang, Shaanxi 712100, China
  • Received:2024-10-30 Accepted:2025-01-09 Online:2025-09-10 Published:2025-09-04
  • Supported by:
    This work was supported by the Young scholar Foundation of National Natural Science of China (52209168) and the Postdoctoral Research Project of Shaanxi Province (2023BSHGZZHQYXMZZ14).

PDF (Chinese)

101

Abstract: Wetting deformation, one of the primary types of deformation in core wall rockfill dams, significantly affects the stress-deformation behavior of the dam structure and its safety during initial impoundment. To perfect the theory of wetting plasticity, it is essential to develop a plastic model for rockfill wetting deformation. A new plastic model for wetting deformation is proposed in this paper based on the modified Cambridge model and a wetting dilatation equation derived from the wetting strain law. Based on the test data, the parameters are determined and the model is verified. The model’s calculation results are in good agreement with the test data, confirming the accuracy and rationality of the modified Cambridge model for rockfill wetting deformation proposed in this paper. Additionally, the variation rules of model parameters under different confining pressures and porosities are analyzed, and calculation methods for each parameter under varying conditions are provided. These findings enhance the plasticity theory of rockfill wetting deformation and provide valuable reference and support for future research in this area.

Key words: rockfill material, wetting deformation, modified Cambridge model, wetting dilatancy equation

CLC Number: 

  • TV641
[1] WANG Hui, NIU Xin-qiang, MA Gang, ZHOU Wei, . Discrete element simulation study on the macro- and meso-mechanical properties of rockfill materials under wetting-drying cycles [J]. Rock and Soil Mechanics, 2024, 45(S1): 665-676.
[2] ZUO Yong-zhen, CHENG Zhan-lin, PAN Jia-jun, ZHOU Yue-feng, ZHAO Na. Difficulties and solutions of wetting deformation test of gravelly soil core wall material [J]. Rock and Soil Mechanics, 2023, 44(7): 2170-2176.
[3] CHANG Zhou, ZHANG Liu-jun, HUANG Ping-ming, YAN Chang-gen, JIA Zhuo-long, XU He-qing, . Experimental study on particle breakage and pavement performance of carbonaceous shale [J]. Rock and Soil Mechanics, 2022, 43(11): 3117-3126.
[4] FANG Jin-jin, FENG Yi-xin, YU Yong-qiang, LI Zhen, LIN Zhi-bin. Wetting deformation characteristics of intact loess under true triaxial conditions [J]. Rock and Soil Mechanics, 2020, 41(4): 1235-1246.
[5] WANG feng, ZHANG Jian-qing, . Study of breakage behaviour of original rockfill materials considering size effect on particle strength [J]. Rock and Soil Mechanics, 2020, 41(1): 87-94.
[6] JIE Yu-xin, ZHANG Yan-yi, YANG Guang-hua, . Calculation method of wet deformation of earth-rock materials [J]. Rock and Soil Mechanics, 2019, 40(S1): 11-20.
[7] LIU Si-hong, SHEN Chao-min, MAO Hang-yu, SUN Yi. State-dependent elastoplastic constitutive model for rockfill materials [J]. Rock and Soil Mechanics, 2019, 40(8): 2891-2898.
[8] DING Yan-hui, ZHANG Bing-yin, QIAN Xiao-xiang, YIN Yin, SUN Xun, . Experimental study of the characteristics of wetting deformation of rockfill materials [J]. Rock and Soil Mechanics, 2019, 40(8): 2975-2981.
[9] ZHANG Ling-kai, WANG Rui, ZHANG Jian-min, TANG Xin-jun, . A static and dynamic constitutive model of rockfill material considering particle breakage [J]. Rock and Soil Mechanics, 2019, 40(7): 2547-2554.
[10] KONG Xian-jing, NING Fan-wei, LIU Jing-mao, ZOU De-gao, ZHOU Chen-guang, . Influences of stress paths and saturation on particle breakage of rockfill materials [J]. Rock and Soil Mechanics, 2019, 40(6): 2059-2065.
[11] FU Hong-yuan, LIU Jie, ZENG Ling, BIAN Han-bing, SHI Zhen-ning, . Deformation and strength tests of pre-disintegrating carbonaceous mudstone under loading and soaking condition [J]. Rock and Soil Mechanics, 2019, 40(4): 1273-1280.
[12] YANG Gui, SUN Xin, WANG Yang-yang, . Tests on resilient behaviour of polymer rockfill materials [J]. , 2018, 39(5): 1669-1674.
[13] LIU Guo-ming, CHEN Ze-qin, WU Le-hai. Improvement of Gudehus-Bauer hypoplastic constitutive model for rockfill materials and the determination of model parameters [J]. , 2018, 39(3): 823-830.
[14] YAN Shu-wang, ZHANG Jing-jing, TIAN Ying-hui, CHEN Hao，. Experiment and theory research on the pore pressure unloading characteristics of saturated clay under isotropic consolidation conditions [J]. , 2018, 39(3): 775-781.
[15] JIANG Jing-shan, CHENG Zhan-lin, ZUO Yong-zhen, DING Hong-shun,. Effect of dry density on mechanical properties of rockfill materials [J]. , 2018, 39(2): 507-514.
Viewed
Full text


Abstract

Cited
  Shared   
  Discussed   
No Suggested Reading articles found!
Copyright © Rock and Soil Mechanics, All Rights Reserved.
Tel: 027-87198484, 87199252, 87199253, 87198752　E-mail: ytlx@whrsm.ac.cn
Powered by Beijing Magtech Co. Ltd