Journal of Korean Society of Steel Construction (한국강구조학회 논문집)

Korean Society of Steel Construction (한국강구조학회)
권호 표지
DOI QR코드

DOI QR Code

Analysis of Moment Effect of Bridge Design Live Load KL-510 by Statistical Analysis of WIM Data of Expressway

고속도로 WIM 데이터의 통계분석을 통한 교량 설계활하중 KL-510의 모멘트 효과 분석

  • Paik, Inyeol (Department of Civil and Environmental Engineering, Gachon University) ;
  • Jeong, Kilhwan (Department of Civil and Environmental Engineering, Gachon University)
  • 백인열 (가천대학교, 토목환경공학과) ;
  • 정길환 (가천대학교, 토목환경공학과)
  • Received : 2017.10.13
  • Accepted : 2017.11.06
  • Published : 2017.12.27
Download PDF
⟨ Previous Next ⟩

Abstract

The live load effect of KL-510 of the current Korean bridge design code is examined by comparing with that of the multiple trucks of which the weights are statistically estimated from measured traffic data as well as with those of the related live load models. The truck weight data measured on the expressway before and after overweight enforcement are used to obtain the truck weights following the same procedures in deciding the live load model of the design codes and the results are compared with the load effect of KL-510. KL-510 yields a very uniform loading effect compared with the multiple truck effects when the weights are estimated from the data which contains some of the heavy trucks over the operational weight limit. KL-510 yields consistent results with the live load of AASHTO LRFD and shows less variation than the past load model DB-24 over the span lengths considered in this study. As a result of this research, the actual truck combinations equivalent to the notional KL-510 load model are constructed and it can be applied to the evaluation of the existing bridge and the calibration of the load factor of the permit vehicle.

현행 국내 교량 설계기준의 활하중 모형인 KL-510의 하중 효과를 실측된 통행자료로부터 통계적으로 추정한 트럭의 연행효과 및 국내외 관련 설계기준이 하중모형과 비교한다. 과적단속 전후에 고속도로에서 측정된 트럭의 중량 자료를 이용하여 설계기준의 활하중 모형 결정과 동일한 과정을 따라서 트럭 중량을 산정하여 그 하중효과를 KL-510과 비교하였다. KL-510은 운행제한중량을 초과하는 트럭을 일부 포함하는 자료로부터 추정한 트럭의 연행에 의한 하중효과와 매우 부합하는 결과를 보였다. KL-510은 미국 AASHTO LRFD의 활하중 모형과 일관성 있는 결과를 주며, 기존 하중 모형인 DB-24보다 하중효과의 비율이 균일하였다. 이 연구의 결과로 가상의 하중 모형인 KL-510에 해당하는 실제 트럭의 조합을 구성하였으며, 향후 공용중인 교량의 평가와 허가차량의 하중계수 보정에 적용할 수 있다.

Keywords

References

  1. AASHTO (2015 AASHTO LRFD Bridge Design Specifications, American Association of State Highway and Transportation Officials, 7h ed., Washington, D.C.
  2. Nowak, A.S. (1999) Calibration of LRFD Bridge Design Code, NCHRP Report 368, Transportation Research Board, Washington D.C, pp.B1-B15.
  3. Hwang, E.S. (2009a) Development of Vehicular Load Model using Heavy Truck Weight Distribution (I), Journal of the Korean Society of Civil Engineers, Vol.29 No.3, pp. 189-197 (in Korean)
  4. Hwang, E.S. (2009b) Development of Vehicular Load Model using Heavy Truck Weight Distribution (II), Journal of the Korean Society of Civil Engineers, Vol.29 No.3, pp. 199-207 (in Korean)
  5. MLTM (2015) Highway Bridge Design Code (Limit State Design Method), Korea Ministry of Land, Transportation and Maritime Affairs, Seoul (in Korean)
  6. KECRI (2013) Improvement of Enforcement System for Restricted Access Vehicles in Expressway using the Automatic Measuring Equipment, Korea Expressway Corporation Research Institute, Hwaseong, pp.68-77 (in Korean)
  7. Yoon, T., Ahn, S.S., Kwon, S.M. and Paik, I. (2016) Estimation of Live Load Effect of Single Truck Through Probabilistic Analysis of Truck Traffic on Expressway, International Journal of Highway Engineering, Vol.18, No.1, pp.1-11 (in Korean) https://doi.org/10.7855/IJHE.2016.18.1.001
  8. MLTM (2006) Vehicle Classification Guide for Traffic Survey by Twelve classes, Korea Ministry of Land, Transportation and Maritime Affairs and Korea Institute of Civil Engineering and Building Technology, Seoul (in Korean)
  9. KIBSE (2015) Commentary of Highway Bridge Design Code (Limit State Design Method), Korea Institute of Bridge and Structural Engineering, Seoul (in Korean)
  10. Hwang, E.S. and Nguyen, T.H. (2011) Determination of Multi-Lane Loading Factors for Vehicular Load of Bridges using Weigh-In-Motion Data, International Journal of Highway Engineering, Vol.1 No.4, pp.123-132 (in Korean)