 | | Mechanics of Solids
A Journal of Russian Academy of Sciences | | Founded
in January 1966
Issued 6 times a year
Print ISSN 0025-6544
Online ISSN 1934-7936 |
Archive of Issues
| Total articles in the database: | | 12854 |
| In Russian (Èçâ. ÐÀÍ. ÌÒÒ): | | 8044
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| In English (Mech. Solids): | | 4810 |
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| << Previous article | Volume 58, Issue 3 / 2023 | Next article >> |
| Ye Jiang and Qiang Ma, "Isolation Effect of Double-Layer Wave Impeding Block on SV Wave in Unsaturated Foundation," Mech. Solids. 58 (3), 834-851 (2023) |
| Year |
2023 |
Volume |
58 |
Number |
3 |
Pages |
834-851 |
| DOI |
10.3103/S0025654422601689 |
| Title |
Isolation Effect of Double-Layer Wave Impeding Block on SV Wave in Unsaturated Foundation |
| Author(s) |
Ye Jiang (School of civil engineering, Qinghai University, Xining, Qinghai, 810016 China)
Qiang Ma (School of civil engineering, Qinghai University, Xining, Qinghai, 810016 China; Qinghai Provincial Key Laboratory of Energy-saving Building Materials and Engineering Safety, Xining, 810016 China, maqiang0104@163.com) |
| Abstract |
This paper improves the vibration isolation effect of the conventional wave impeding block by double-layer wave impeding block with the same thickness. Based on the theory of wave motion in unsaturated porous medium and elastic medium, the vibration isolation performance of double-layer wave impeding block in unsaturated foundation under SV wave incidence is studied. Based on the Helmholtz principle, the solutions of surface vertical displacements of the unsaturated foundation under SV wave incidence are obtained. The influence of the wave impedance ratio between the layers of double-layer wave impeding block and the wave impedance ratio at the interface between the wave impeding block and the unsaturated soil foundation are firstly studied, and it was found that the optimal vibration isolation effect could be obtained by designing and controlling the wave impedance ratio between the layers of the double-layer wave impeding block and the wave impedance ratio at the interface between the wave impeding block and the unsaturated foundation. Then the physical and mechanical parameters such as incidence angle, incidence frequency, saturation, thickness and burial depth of the double-layer wave impeding block were analyzed to determine the influence on the vibration isolation performance of the double-layer wave impeding block. The results show that the best vibration isolation effect of double-layer wave impeding block is achieved at 5° of S-wave incidence angle. The double-layer wave impeding block has better vibration isolation effect at low frequency medium frequency and high frequency. The vibration isolation effect of double-layer wave impeding block increases and then decreases with an increase of saturation, increases with an increase of burial depth and thickness, decreases and then increases with an increase of incident frequency. |
| Keywords |
double-layer wave impeding block, wave impedance ratio, isolation effect, unsaturation soil, amplitude attenuation ratio |
| Received |
26 November 2022 | Revised |
28 December 2022 | Accepted |
10 March 2023 |
| Link to Fulltext |
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