International Journal of Highway Engineering (한국도로학회논문집)

Korean Society of Road Engineers (한국도로학회)
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Development of Weigh Calculation Method for Pavement Roughness Index Considering Vehicle Wandering Distribution

원더링 분포를 고려한 도로포장 평탄성 지수의 가중치 산정기법 개발

  • 이재훈 (한국도로공사 도로교통연구원) ;
  • 손덕수 (한국도로공사 도로교통연구원) ;
  • 박제진 (한국도로공사 도로교통연구원) ;
  • 조윤호 (중앙대학교 공과대학 사회기반시스템공학부)
  • Received : 2017.08.24
  • Accepted : 2017.09.29
  • Published : 2017.10.16
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Abstract

PURPOSES: This study aims to develop a rational procedure for estimating the pavement roughness index considering vehicle wandering. METHODS : The location analysis of the passing vehicle in the lane was performed by approximately 1.2 million vehicles for verification of the wandering distribution. According to verification result, the distribution follows the normal distribution pattern. The probability density function was estimated using each lane's wandering distribution model. Then the procedure for applying a weighted value into the lane profile was conducted using this function. RESULTS : The modified index, MRIw, with consideration towards applying the wandering weighted value application was computed then compared with MRI. It was found that the Coefficient of Variation for distribution of lateral roughness index in the lane was high in the case of a large difference between each index (i.e., MRIw and MRI) observed. CONCLUSIONS : This result confirms that the new procedure with consideration of the weight factor can successfully improve the lane representative characteristics of the roughness index.

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References

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