Dynamic Stability Analysis of Slope Subjected to Surcharge Load considering Tensile Strength Cut-Off
Joint Authors
Lv, Guangdong
He, Yi
Wei, Bingsi
Source
Mathematical Problems in Engineering
Issue
Vol. 2020, Issue 2020 (31 Dec. 2020), pp.1-17, 17 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2020-10-13
Country of Publication
Egypt
No. of Pages
17
Main Subjects
Abstract EN
Surcharge slopes are more vulnerable to instability under the effects of earthquake ground shaking, especially considering the tensile stress.
In order to account for the adverse factors of seismic forces and tensile stress, the theory of soil with tensile strength cut-off is deduced and analyzed using the upper bound limit analysis method in this paper.
Combined with the quasistatic analysis, the equation of critical acceleration expression for surcharge slope subjected to the dynamic conditions has been evaluated.
By using the improved Newmark method, permanent displacements have been analyzed in the case of the classical earthquake ground motions.
In addition, optimization algorithm has been undertaken, in which several influencing factors such as slope inclination, internal friction angle, surcharge factor, seismic load, and tension cut-off coefficient have been taken into account, and some results are verified with the classical solutions and FEM results.
The results concluded the following: (1) The outcomes of verification results are accurate.
(2) The critical acceleration of the slope is significantly affected by tension cut-off with the increasing of surcharge factor and seismic effects.
(3) The permanent displacements of surcharge slope considering the tensile strength cut-off can be even 2 times of the traditional analysis; meanwhile, with more reduction of tensile strength, the cumulative displacements increase rapidly.
Therefore, considering the influence of tensile strength cut-off is fundamental to the dynamic stability design of surcharge conditions.
American Psychological Association (APA)
Lv, Guangdong& He, Yi& Wei, Bingsi. 2020. Dynamic Stability Analysis of Slope Subjected to Surcharge Load considering Tensile Strength Cut-Off. Mathematical Problems in Engineering،Vol. 2020, no. 2020, pp.1-17.
https://search.emarefa.net/detail/BIM-1195742
Modern Language Association (MLA)
Lv, Guangdong…[et al.]. Dynamic Stability Analysis of Slope Subjected to Surcharge Load considering Tensile Strength Cut-Off. Mathematical Problems in Engineering No. 2020 (2020), pp.1-17.
https://search.emarefa.net/detail/BIM-1195742
American Medical Association (AMA)
Lv, Guangdong& He, Yi& Wei, Bingsi. Dynamic Stability Analysis of Slope Subjected to Surcharge Load considering Tensile Strength Cut-Off. Mathematical Problems in Engineering. 2020. Vol. 2020, no. 2020, pp.1-17.
https://search.emarefa.net/detail/BIM-1195742
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1195742