Probabilistic Analysis of Ground Surface Vibration Due to Train Movement, a Case Study on Tehran Metro Line 4

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• 作者：Hamid Reza Nejati (1) h.nejati@modares.ac.ir
  Morteza Ahmadi (1)
  Hamid Hashemolhosseini (2)
  Mohammad Hayati (3)
• 关键词：Ground vibration &#8211 ; Uncertainty &#8211 ; Soil dynamic &#8211 ; Tehran metro &#8211 ; Probabilistic analysis
• 刊名：Geotechnical and Geological Engineering
• 出版年：2012
• 出版时间：October 2012
• 年：2012
• 卷：30
• 期：5
• 页码：1137-1146
• 全文大小：1.5 MB
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• 作者单位：1. Rock Mechanics Department, School of Engineering, Tarbiat Modares University, Tehran, Iran2. Mining Engineering Department, Isfahan University of Technology, Isfahan, Iran3. Mining Engineering Department, Shahroud University, Shahroud, Iran
• ISSN：1573-1529

文摘

Ground surface vibration produced by moving train is one of the most important aspects in urban areas. The purpose of this study is the probabilistic analysis of ground surface vibration, which is generated by metro transportations. For this reason, Tehran metro line 4 is considered as a case study. In this paper, at first, a new procedure is used to simulate train dynamic load. In the second step, based on the variation of geomechanical properties and train characteristics in Tehran metro line 4, more than 60 numerical models are simulated. The results of numerical simulations are analyzed by multivariate statistical technique and an equation for prediction of peak particle velocity (PPV) in the ground surface is presented. In the next step, probabilistic analysis is done using Monte Carlo Simulation (MCS). Finally, sensitivity of input data on ground surface vibration is discussed and the impact of geomechanical properties and train characteristics on the surface vibration is considered. Based on the probabilistic analysis, PPV in the surface region of Tehran metro line 4 is <2.76 mm/s with 95 % probability.