Statistical damage model for fiber-reinforced vegetation concrete substrate

被引：0
|
作者：
Ding Y. [1 ,2 ]
Wei W.-B. [1 ,2 ]
Pan B. [3 ]
Huang Q.-Z. [1 ,2 ]
Liu Z.-X. [1 ,2 ]
Liu D.-X. [1 ,2 ]
机构：
[1] Key Laboratory of Geological Hazards in Three Gorges Reservoir Area (China Three Gorges University), Ministry of Education, Yichang
[2] Hubei Key Laboratory of Disaster Prevention and Mitigation, China Three Gorges University, Yichang
[3] Sixth Geological Team of Hubei Geological Bureau, Xiaogan
来源：
Yantu Gongcheng Xuebao/Chinese Journal of Geotechnical Engineering | 2022年 / 44卷 / 04期
关键词：
Damage evolution; Damage threshold; Statistical damage; Vegetation concrete substrate; Weibull distribution;
D O I：
10.11779/CJGE202204007
中图分类号：
学科分类号：
摘要：
This study attempts to investigate the constitutive model and damage evolution law of the fiber-reinforced vegetation concrete substrate. Taking the two factors of confining pressure and fiber content into account, a statistical damage model that can reflect the mechanical properties of the substrate is established based on the Weibull distribution. The method for determining model parameters is given, and the relationship among the Weibull distribution parameters, the confining pressure and the fiber contents is discussed. The model is then used to verify the results of the triaxial tests on the substrate. According to the destruction criterion of the substrate, the method for determining the damage threshold is deduced. By analyzing the damage evolution characteristics and the failure process of the micro-element, the stress-strain relationship and the law of damage softening of the substrate are elaborated. The results show that the model curves agree well with the tests, which can reflect the damage softening characteristics during the loading process of the fiber-reinforced substrate. Besides, the ratio of the damage threshold to the peak strain is found to range from 0.4 to 0.6. This study provides a theoretical reference for the accurate analysis and evaluation of the mechanical properties of substrate. © 2022, Editorial Office of Chinese Journal of Geotechnical Engineering. All right reserved.
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页码：652 / 659
页数：7
相关论文
共 19 条
  • [1] XIA Zhen-yao, XU Wen-nian, WANG Le-hua, Research on characteristics of early strength of ecological slope-protected base material of vegetation-growing concrete, Rock and Soil Mechanics, 32, 6, pp. 1719-1724, (2011)
  • [2] Technical Code for Eco-Restoration of Vegetation Concrete on Steep Slope of Hydropower Projects: NB/T 35082-2016, (2016)
  • [3] PAN Bo, DING Yu, HUANG Xiao-le, Et al., Triaxial experimental study on palm fiber-reinforced vegetation concrete, Bulletin of the Chinese Ceramic Society, 39, 4, pp. 1153-1159, (2020)
  • [4] SHEN Zhu-jiang, HU Zai-qiang, Binary medium model for loess, Journal of Hydraulic Engineering, 7, pp. 1-6, (2003)
  • [5] KRAJCINOVIC D, SILVA M A G., Statistical aspects of the continuous damage theory, International Journal of Solids and Structures, 18, 7, pp. 551-562, (1982)
  • [6] KUMAR PANDEY P, SINGH K K, GAURAV A., Mechanical properties of woven GFRP angle ply laminates: a statistical analysis based on two parameters weibull distribution, Materials Today: Proceedings, 22, pp. 1318-1325, (2020)
  • [7] CUI T, HE H X, YAN W M, Et al., Compression damage constitutive model of hybrid fiber reinforced concrete and its experimental verification, Construction and Building Materials, 264, pp. 1-11, (2020)
  • [8] ZHU Zhen-nan, JIANG Guo-sheng, TIAN Hong, Et al., Study on statistical thermal damage constitutive model of rock based on normal distribution, Journal of Central South University (Science and Technology), 50, 6, pp. 1411-1418, (2019)
  • [9] ZHANG Ming, WANG Fei, YANG Qiang, Statistical damage constitutive model for rocks based on triaxial compression tests, Chinese Journal of Geotechnical Engineering, 35, 11, pp. 1965-1971, (2013)
  • [10] DENG J, GU D S., On a statistical damage constitutive model for rock materials, Computers & Geosciences, 37, 2, pp. 122-128, (2011)
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