Dynamic Behavior and Constitutive Relationship of Mudstone Slip Zone of Landslide with Weak Interlayer | Zendy

Jingjing Zhou | Zendy; Zhao Fa-suo | Zendy; Yanbo Zhu | Zendy; Wenqi Dong | Zendy; Ziguang He | Zendy

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Dynamic Behavior and Constitutive Relationship of Mudstone Slip Zone of Landslide with Weak Interlayer

Author(s) -

Jingjing Zhou,

Zhao Fa-suo,

Yanbo Zhu,

Wenqi Dong,

Ziguang He

Publication year - 2021

Publication title -

shock and vibration

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.418

H-Index - 45

eISSN - 1875-9203

pISSN - 1070-9622

DOI - 10.1155/2021/3330127

Subject(s) - dynamic modulus , amplitude , damping ratio , vibration , materials science , landslide , constitutive equation , geotechnical engineering , elastic modulus , slip (aerodynamics) , dynamic mechanical analysis , dynamic loading , force dynamics , modulus , strain (injury) , dynamic testing , stress (linguistics) , geology , structural engineering , composite material , engineering , physics , thermodynamics , optics , finite element method , philosophy , linguistics , polymer , quantum mechanics , medicine , mechanical engineering

Sliding zone dynamics in the Qinling-Daba mountain area under different dynamic parameters have not been studied extensively. In this study, we investigated the dynamic behavior of the sliding zones of a high-steep rock landslide in the Qinling-Daba mountain area under the influence of dynamic stress amplitude and frequency and proposed an empirical model of the dynamic constitutive relationship. The dynamic behavior was studied based on a cyclic triaxial test system. The results indicated that an increase in the dynamic stress amplitude decreased the dynamic elastic modulus linearly, increased the damping ratio, and increased the axial strain exponentially. Among these properties, the elastic strain was found to be more sensitive to the increase in the dynamic stress amplitude than the plastic strain. As the loading frequency increased, the dynamic elastic modulus increased, whereas the damping ratio decreased. Furthermore, the proposed empirical model of the dynamic constitutive relationship between the vibration number and loading frequency based on the dynamic elastic modulus could satisfactorily describe the dynamic stress-strain relationships of the samples from test stability and failure zones. These findings are expected to make a significant contribution toward further revealing the sliding mechanism of such landslides.

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