Analysis of ground vibration of moving train by using Hyperbola-Logistic model

CHEN Gong-qi; GAO Guang-yun; JIANG Jian-ping

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Analysis of ground vibration of moving train by using Hyperbola-Logistic model

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- Analysis of ground vibration of moving train by using Hyperbola-Logistic model
- Vol. 34, Issue S1, (2013)
- 作者机构：
  
  1. 同济大学地下建筑与工程系,上海,200092
  2. 同济大学岩土及地下工程教育部重点实验室,上海,200092
  3. 上海海事大学海洋环境与工程学院,上海,200135
- 作者简介：
- 基金信息：
- DOI：
  CLC： TU113.5
- Online First：09 June 2014，
  
  Published：2013
- 稿件说明：
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CHEN Gong-qi, GAO Guang-yun, JIANG Jian-ping. Analysis of ground vibration of moving train by using Hyperbola-Logistic model[J]. 2013, 34(S1).
DOI：

CHEN Gong-qi, GAO Guang-yun, JIANG Jian-ping. Analysis of ground vibration of moving train by using Hyperbola-Logistic model[J]. 2013, 34(S1). DOI：

摘要

振动波在土介质中传播包含呈幂函数关系的几何衰减和呈指数函数关系的阻尼衰减两方面，针对振动波衰减的两种性质，提出Hyperbola-Logistic组合模型来描述振动波沿地表的传播。实例分析表明，Hyperbola-Logistic组合模型既可以用来预测地面位移、速度、加速度及振级的衰减，又可以预测高架桥段、路堤段及地下列车引起的地面振动。Hyperbola-Logistic组合模型具有较高的拟合精度，相关系数R均在0.95以上，决定系数R2均在0.90以上，它对振动衰减的拟合是可信的。通过对比，文中模型无论数值大小还是分布趋势，都能更好地预测列车引起的地面振动。

Abstract

The ground vibration attenuation consists of geometric attenuation in the form of power function and damping attenuation in the form of exponential function. The Hyperbola-Logistic model is proposed based on the two characteristics. Through case study

it is revealed that the Hyperbola-Logistic model can not only be used to predict ground displacement and attenuation of velocity

acceleration

and vibration level

but also be used to predict ground vibration caused by train passing the viaduct section

embankment section and underground section. The Hyperbola-Logistic model has a better fitting precision

whose correlation coefficient R is above 0.95 and determination coefficient R2 is above 0.90

which demonstrates its credibility to predict ground vibration attenuation. This model shows its advantage both in quantitative value and distribution trends after comparison

so as to provide it a better way to predict ground vibration caused by the train.

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