A preliminary study on the propagation law of elastic wave through a soilbag

(1.State Key Laboratory of Simulation and Regulation of Water Cycle in River Basin, China Institute of Water Resources and Hydropower Research, Beijing 100038, China;2.College of Water Conservancy and Hydropower Engineering, Hohai University, Nanjing 210098, China;3.University of Twente, Enschede 7500.AE, Netherlands )

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    Using the discrete element method (DEM), a series of numerical simulations of elastic wave propagation are carried out on the particle models of pure soil foundation and soil foundation containing a single-layered soilbag. The influence of the soilbag in the foundation on the elastic wave velocity and the damping of foundation is studied. Numerical simulation results show that the existence of soilbag in the foundation slightly reduces the elastic wave velocity and reduces the quality factor Q of the foundation. The change laws of elastic P-wave velocity and S-wave velocity are roughly the same when they pass through the soilbag. Under the condition of 100.kPa confining pressure and 500.Hz elastic wave input, the attenuation effect of a soilbag on the elastic wave is mainly concentrated when passing through the upper and lower geosynthetic interface.

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贾凡,刘斯宏,程宏旸.弹性波穿越土工袋传播规律的数值模拟[J].河海大学学报(自然科学版),2022,50(6):108-113.(JIA Fan, LIU Sihong, CHENG Hongyang. A preliminary study on the propagation law of elastic wave through a soilbag[J]. Journal of Hohai University (Natural Sciences),2022,50(6):108-113.(in Chinese))

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  • Received:November 16,2021
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  • Online: November 25,2022
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