Background

Excessive vibrations induced by trains and amplified or propagated through the ground can affect sensitive areas such as hospitals, residences, or telecommunication buildings. However, it has been found that the control of these vibrations can be improved by including materials with a high level of damping between the adjacent ground and the tunnel structure.

Review factor

In this study, the behavior of a new type of mortar called C-COM has been characterized through finite element simulations, and its effectiveness on mitigating vibrations in a tunnel is determined.

Conclusions

Five parameters have been proposed to compare the response obtained with the new mortar and the one corresponding to a model with conventional materials. It was found that, using the C-COM mortar, vibration levels can be reduced by 10–20%.

中文翻译：

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在路段和开挖土地形成的空间中注入由再生轮胎橡胶组成的新砂浆，减轻铁路隧道中的振动

背景

火车引起的并经过地面放大或传播的过度振动会影响敏感区域，例如医院，住宅或电信大楼。然而，已经发现，通过在相邻地面和隧道结构之间包括具有高阻尼水平的材料，可以改善对这些振动的控制。

审查因素

在这项研究中，已通过有限元模拟对新型砂浆C-COM的性能进行了表征，并确定了其在缓解隧道振动中的有效性。

结论

已经提出了五个参数来比较用新型砂浆获得的响应，以及一个对应于具有常规材料的模型的响应。发现使用C-COM砂浆可以将振动等级降低10–20％。