DOI: 10.1007/s11069-021-04779-6
论文题名: Developing a two-step improved damage creep constitutive model based on soft rock saturation-loss cycle triaxial creep test
作者: Li A. ; Deng H. ; Zhang H. ; Jiang M. ; Liu H. ; Xiao Y. ; Wen J.
刊名: Natural Hazards
ISSN: 0921030X
出版年: 2021
卷: 108, 期: 2 起始页码: 2265
结束页码: 2281
语种: 英语
中文关键词: Creep damage constitutive model
; Fractional calculus theory
; Soft rock
; Triaxial creep test
英文关键词: calibration
; creep
; damage
; deformation
; numerical model
; one-dimensional modeling
; saturation
; soft rock
; triaxial test
; water-rock interaction
英文摘要: The study of the time-dependent deformation behavior of soft rock under water–rock interaction is of great significance to reveal slope creep deformation behavior. In this study, the saturation-loss cycle's triaxial creep test was performed, and the creep deformation, creep rate, and long-term strength of silty mudstone were analyzed. A two-step improved modeling method was also proposed. Firstly, by introducing fractional Abel viscous pot and aging factor, a one-dimensional creep constitutive model was established based on the Burgers model. And then the three-dimensional creep damage constitutive was derived through Laplace transform. Finally, the Levenberg–Marquardt (L–M) algorithm method was used to identify the creep curve and calibrate the model parameters. The new constitutive model could reflect the soft rock's creep characteristics during saturation-loss cycle. © 2021, The Author(s), under exclusive licence to Springer Nature B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/169155
Appears in Collections: 气候变化与战略
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作者单位: State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu, 610059, China; China Southwest Geotechnical Investigation and Design Institute Corporation, Chengdu, 610059, China
Recommended Citation:
Li A.,Deng H.,Zhang H.,et al. Developing a two-step improved damage creep constitutive model based on soft rock saturation-loss cycle triaxial creep test[J]. Natural Hazards,2021-01-01,108(2)