Railway noise generation depends to a large extent by the rail and wheel roughness as well as corrugation. A special procedure called acoustic grinding is therefore undertaken to achieve a smooth rail for reducing noise. However, even the acceptance of grinding work satisfy the requirement of standard EN 13231-3:2012, it can be "unacceptable noise" in practice. This may be because of track specific values that were defined at too low a level. It is reasonable to update the grinding work standard. Based on a mathematical calculation, the recommendation acceptance criteria for acoustic rail grinding was discussed in this presented paper. After that, a case study conducted for Beijing metro was also provided as an example.
展开▼
