Influence of tire-derived aggregates mixed with ballast on ground-borne vibrations

Journal of Modern Transportation

Fereidoon Moghadas Nejad¹  Morteza Esmaeili²  Masoud Fathali² 

[1] Department of Civil and Environmental Engineering, Amirkabir University of Technology;School of Railway Engineering, Iran University of Science & Technology;

关键词: Railway track;    Ballast;    Tire-derived aggregates (TDA);    Ground-borne vibrations;   

DOI  :  10.1007/s40534-019-00201-x

来源: DOAJ

【 摘 要 】

Abstract In this paper, the use of recycled tire-derived aggregates (TDA) mixed with ballast material is evaluated in order to reduce the train-induced ground-borne vibrations. For this purpose, a series of field vibration measurements has been carried out at an executed pilot track. The prepared ballast layer was mixed with different percentages of TDA in three sections. Moreover, another test section with pure ballast is considered as a reference. The vibrations generated by a motor-powered draisine at two different speeds are then recorded. Records of vibration data are provided using four seismometers placed once longitudinally and once transversely beside different sections. The outputs are then processed in both velocity–time and velocity–frequency domains. To verify the vibration mitigation performance of TDA in real operation conditions, field measurements under the passage of two planned passenger and freight trains are finally arranged. Results show that the best TDA mixture ratio, i.e., 10% by weight, can reduce the transmitted vibrations up to 12 dB for frequencies above 31.5 Hz. According to the obtained efficiency and the very low cost of the recycled materials, this solution can be considered as a competitive vibration countermeasure.

【 授权许可】

Unknown