Abstract
Traffic, machine operations and other human activities can generate ground vibrations, which can cause distress to adjacent structures, and disturb the operation of precision instruments. Generally, these adverse effects of vibrations can be eliminated or prevented by installation of various types of wave barriers, such as a row of holes. In the paper, the investigation is focused on the effects of using a row of holes for the reduction of nearby vibration response generated by the motion of a machine foundation on saturated soil. A 3D semi-analytical BEM model is established, where the TLM (thin layered method) basic solutions of saturated soil are employed as poroelastodynamic fundamental solutions. Then the effects of the model parameters on effectiveness of vibration isolation are investigated and discussed in detail. The results show that a row of holes can isolate the ground vibrations successfully. Increasing the radius and the depth, decreasing the net spacing between two successive holes can all result in an increase in the screening effectiveness. The distance between the machine foundation and wave barriers can affect the screening effectiveness, and the larger the distance is, the poor the screening effectiveness is.
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This work is supported by the National Natural Science Foundation of China with Grant no. 51308506.
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Shi, G., Li, Y. (2018). Three-Dimensional Analysis of a Row of Holes as Active Wave Barrier in Saturated Soil. In: Qiu, T., Tiwari, B., Zhang, Z. (eds) Proceedings of GeoShanghai 2018 International Conference: Advances in Soil Dynamics and Foundation Engineering. GSIC 2018. Springer, Singapore. https://doi.org/10.1007/978-981-13-0131-5_22
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DOI: https://doi.org/10.1007/978-981-13-0131-5_22
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