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Design criteria of wind barriers for traffic -Part 2: decision making process

  • Kim, Dong Hyawn (Department of Coastal Construction Engineering, Kunsan National University) ;
  • Kwon, Soon-Duck (Department of Civil Engineering, Chonbuk National University) ;
  • Lee, Il Keun (Expressway & Transportation Research Institute, Korea Expressway Corporation) ;
  • Jo, Byung Wan (Department of Civil and Environmental Engineering, Hanyang University)
  • Received : 2009.08.08
  • Accepted : 2010.04.30
  • Published : 2011.01.25

Abstract

This study presents a decision making process for installation of wind barrier which is used to reduce the wind speed applied to running vehicles on expressway. To determine whether it is needed to install wind barrier or not, cost and benefit from wind barrier are calculated during lifetime. In obtaining car accidental risk, probabilistic distribution of wind speed, daily traffic volume, mixture ratio in the volume, and duration time for wind speed range are considered. It is recommended to install wind barrier if benefit from the barrier installation exceed construction cost. In the numerical examples, case studies were shown for risk and benefit calculation and main risky regions on Korean highway were all evaluated to identify the number of installation sites.

Keywords

Acknowledgement

Supported by : Ministry of Land, Transport and Maritime of Korean

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