Modeling Static Behavior of Rockfill Materials Based on Generalized Plasticity Model
Joint Authors
Bian, Shihai
Wu, Bo
Ma, Yongzheng
Source
Issue
Vol. 2019, Issue 2019 (31 Dec. 2019), pp.1-14, 14 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2019-09-08
Country of Publication
Egypt
No. of Pages
14
Main Subjects
Abstract EN
Rockfill materials are commonly used for dam construction.
Establishing an effective model that can reasonably describe the mechanical properties of rockfill material is very important for the calculation of earth-rock dam engineering.
Based on the generalized plasticity model of sand, a modified generalized plasticity model suitable for rockfill material is established by modifying the plastic modulus.
Focusing on three types of stress paths (e.g., CT test, CP test, and CR test), the stress path adaptability of the modified generalized plasticity is studied.
Simulation results show that the proposed model can well predict the strength characteristics while it underestimates the shrinkage characteristics of rockfill materials for constant P test.
It is difficult for the generalized plasticity model to predict larger radial shrinkage strain for constant stress ratio tests.
This shortcoming can be improved by employing a modified dilatancy equation.
Finally, by introducing critical state theory and considering the effect of initial void ratio on plastic modulus, a state-dependent generalized plasticity model is proposed and verified by experiment of granite rockfill materials and TRM with different void ratios.
These works covers the most common stress paths related to the construction of earth-rock dams and can capture static behavior of rockfill materials.
American Psychological Association (APA)
Bian, Shihai& Wu, Bo& Ma, Yongzheng. 2019. Modeling Static Behavior of Rockfill Materials Based on Generalized Plasticity Model. Advances in Civil Engineering،Vol. 2019, no. 2019, pp.1-14.
https://search.emarefa.net/detail/BIM-1115745
Modern Language Association (MLA)
Bian, Shihai…[et al.]. Modeling Static Behavior of Rockfill Materials Based on Generalized Plasticity Model. Advances in Civil Engineering No. 2019 (2019), pp.1-14.
https://search.emarefa.net/detail/BIM-1115745
American Medical Association (AMA)
Bian, Shihai& Wu, Bo& Ma, Yongzheng. Modeling Static Behavior of Rockfill Materials Based on Generalized Plasticity Model. Advances in Civil Engineering. 2019. Vol. 2019, no. 2019, pp.1-14.
https://search.emarefa.net/detail/BIM-1115745
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1115745