Study on the isolation effect of a composite multilayer wave impeding block on the S-wave in an unsaturated foundation
Qiang Ma 1,2
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School of Civil Engineering, Qinghai University, Xining, China
Qinghai Provincial Key Laboratory of Energy-Saving Building Materials and Engineering Safety, Xining, China
Submission date: 2023-01-09
Final revision date: 2023-02-16
Acceptance date: 2023-03-26
Online publication date: 2023-05-19
Publication date: 2023-07-31
Corresponding author
Qiang Ma   

Civil Engineering, Qinghai University, China
Journal of Theoretical and Applied Mechanics 2023;61(3):427-439
The traditional wave impeding block (WIB) is improved to a composite multilayer WIB with the same thickness (tri-layer as an example). Firstly, a physical model of the composite multilayer WIB installed in an unsaturated foundation is established, and the isolation effect on the S-wave is studied based on the wave theory in unsaturated porous and elastic media. The purpose of this study is to enhance the isolation frequency of WIB and to show the best isolation effect achieved by selecting the appropriate wave impedance ratio. The influence of saturation on its vibration isolation effect is also analyzed.
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