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| Experimental Investigation on Propagation of Impact Load Induced Vibration in Sandy Soil |
| XIANG Guo-Wei, YE Guan-Lin, WANG Jian-Hua |
| (Department of Civil Engineering, Shanghai Jiaotong University, Shanghai 200240, China) |
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Abstract Model test was performed to investigate the propagation and decay of impactload induced vibration in sandy soil, and the effect of vibration screening panel was furthermore studied. The results show that the polystyrene waveabsorbing panel placed at the boundary of test box is effective in controlling the boundary reflection of vibration waves. The impactload induced vibration decays rapidly with the increase of distance from the load point, and the attenuation of peak acceleration along horizontal, vertical and diagonal direction can be well fitted by the function of amax=kR-β. Polystyrene screening panel, behind which vibration can be reduced, has the negative effect of intensifying the vibration just before it, this may be caused by the reflecting of vibration wave at the screening panel.
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Received: 17 December 2010
Published: 30 January 2012
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