Constitutive model for coarse-grained dam materials considering state parameter

被引：0
|
作者：
Wei K.-M. [1 ,2 ]
Chen S.-S. [1 ,2 ]
Li G.-Y. [1 ,2 ]
Fu Z.-Z. [1 ,2 ]
机构：
[1] Geotechnical Engineering Department, Nanjing Hydraulic Research Institute, Nanjing
[2] Key Laboratory of Failure Mechanism and Safety Control Techniques of Earth-Rock Dam of the Ministry of Water Resources, Nanjing
来源：
| 1600年 / Chinese Society of Civil Engineering卷 / 38期
关键词：
Coarse-grained soil; Constitutive model; Rockfill dam; State parameter;
D O I：
10.11779/CJGE201604009
中图分类号：
学科分类号：
摘要：
The stress-strain relationship of coarse-grained soils is closely related to soil density. The regular constitutive model cannot consider the effect of initial void ratio on mechanical behaviors of coarse-grained soils. In this paper, a two-yield-surface model is proposed for coarse-grained soils based on triaxial tests. The two-yield-surface model using a state parameter so that can reflect the influence of soil density on the peak stress ratio, dilatancy rule, strain hardening or softening rule in shearing of coarse-grained soils. The stress-strain expressions of this model were also deduced. Several kind of coarse-grained soils test results were used to verify the adaptability of the proposed model, results showed that the model predictions are consistent with test results. © 2016, Chinese Society of Civil Engineering. All right reserved.
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页码：654 / 661
页数：7
相关论文
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