Geomechanics and Engineering
Volume 44, Number 3
DOI: 309-326
Nonlinear post-buckling analysis of geomechanical structures: multiscale Interaction and nanomechanical reinforcement effects in layered soil–rock systems
Yurun Wang , Mohsen Nasihatgozar , Seyyed Rohollah Taghaodi , M. Ghaytani
Abstract
The paper examines the nonlinear post buckling responses of layered nano-materials reinforced soil and rocks of multiscale interactions that affect geomechanical stability. It proposes a modeling framework to model spatial variation of material properties via soil and rocks layers (and also through nanomechanics reinforcing effects including increases in the stiffness and shear resistance). A set of equations governing the energy principles as the governing equations are formulated and their solution is traced in conjunction between Rayleigh-Ritz approach and iterative numerical methods to trace the post-buckling behavior. Important parameters investigated are the concentration of reinforcement, the thickness of the layers, mechanical characteristics of the soil and rocks and the geometry of the weak planes or cut-outs in the system. Findings indicate that nanocomposites reinforcement adds significant value to the load-bearing capacity, suppressing the post-buckling initiation, and structural integrity as a whole. It is a study as it gives feedback in the optimization of nano-reinforced geomechanical structures to ensure better performance of such structures in foundations, slopes, and underground construction under complicated loading conditions.
Key Words
geomechanical structures; nanomechanical; nonlinear post-buckling analysis; soil–rock systems
Address
- Yurun Wang — Faculty of Public Security and Emergency Management, Kunming University of Science and Technology, Yunnan 650093, China
- Mohsen Nasihatgozar — Department of Mechanical engineering, Kas.C., Islamic Azad university, Kashan, Iran
- Seyyed Rohollah Taghaodi — Department of Industrial engineering, Kas.C., Islamic Azad university, Kashan, Iran
- M. Ghaytani — Department of Mechanical Engineering, National Iranian Oil Engineering and Construction Company (NIOEC), Iran
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