CLC number: TU45
On-line Access: 2024-08-27
Received: 2023-10-17
Revision Accepted: 2024-05-08
Crosschecked: 2015-07-09
Cited: 3
Clicked: 6161
Citations: Bibtex RefMan EndNote GB/T7714
Ting-chun Li, Lian-xun Lyu, Shi-lin Zhang, Jie-cheng Sun. Development and application of a statistical constitutive model of damaged rock affected by the load-bearing capacity of damaged elements[J]. Journal of Zhejiang University Science A, 2015, 16(8): 644-655.
@article{title="Development and application of a statistical constitutive model of damaged rock affected by the load-bearing capacity of damaged elements",
author="Ting-chun Li, Lian-xun Lyu, Shi-lin Zhang, Jie-cheng Sun",
journal="Journal of Zhejiang University Science A",
volume="16",
number="8",
pages="644-655",
year="2015",
publisher="Zhejiang University Press & Springer",
doi="10.1631/jzus.A1500034"
}
%0 Journal Article
%T Development and application of a statistical constitutive model of damaged rock affected by the load-bearing capacity of damaged elements
%A Ting-chun Li
%A Lian-xun Lyu
%A Shi-lin Zhang
%A Jie-cheng Sun
%J Journal of Zhejiang University SCIENCE A
%V 16
%N 8
%P 644-655
%@ 1673-565X
%D 2015
%I Zhejiang University Press & Springer
%DOI 10.1631/jzus.A1500034
TY - JOUR
T1 - Development and application of a statistical constitutive model of damaged rock affected by the load-bearing capacity of damaged elements
A1 - Ting-chun Li
A1 - Lian-xun Lyu
A1 - Shi-lin Zhang
A1 - Jie-cheng Sun
J0 - Journal of Zhejiang University Science A
VL - 16
IS - 8
SP - 644
EP - 655
%@ 1673-565X
Y1 - 2015
PB - Zhejiang University Press & Springer
ER -
DOI - 10.1631/jzus.A1500034
Abstract: It is difficult to establish a constitutive model of damage for rock materials due to the complex meso-mechanism of the rock deterioration process. In this paper, by analysis of the damage mechanism, the reason for the existence of a rock damage threshold is explained and we conclude that damaged rock elements of micro scale can still bear stress. The correlation between damaged and undamaged elements is examined in relation to stress distribution. Rocks under different initial conditions can be defined as undamaged materials with different properties, to avoid the issue of the solution of the undamaged condition and to simplify the damage model. On the basis of the Mohr-Coulomb criterion and theories of continuum damage and statistical mechanics, a constitutive model of rock materials affected by the load-bearing capacity of damaged elements under triaxial compression is established. Compared with previous experimental data and theoretical results, we show that this model can reflect the stress-strain relationship of the whole process of rock failure. In particular, the description of the strain softening stage after peak strength is proved to be more reasonable. Programming of the constitutive model applied to stability analysis of the Qingdao subway station is achieved by secondary development of FLAC3D. The computing results compare very well with field monitoring data, indicating that the constitutive model of damaged rock can reflect the deterioration effect of weathered rock at the site. This constitutive model of rock damage may provide a useful reference for practical application.
The manuscript brought minor but useful modifications to the common statiscal damage model mainly aiming at improving the post-peak mechanical behaviors of geomaterials. It is a very interesting and relevant topic.
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