Journal of Korean Society of Steel Construction (한국강구조학회 논문집)

Korean Society of Steel Construction (한국강구조학회)
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A Study on Influencing Factors in BWIM System and Its Field Applicability

BWIM시스템의 현장 적용성 및 영향인자에 관한 연구

  • Yoo, Dong Gyun (Dept. of Civil Engineering, Korea Maritime and Ocean University) ;
  • Kyung, Kab Soo (Dept. of Civil Engineering, Korea Maritime and Ocean University) ;
  • Lee, Sung Jin (Dept. of Civil Engineering, Korea Maritime and Ocean University) ;
  • Lee, Hee Hyun (Construction Technology Consultant Co., Ltd.) ;
  • Jeon, Jun Chang (Construction Technology Consultant Co., Ltd.)
  • Received : 2013.09.10
  • Accepted : 2014.06.05
  • Published : 2014.08.27
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Abstract

It has been considered that factors affecting accuracy of the estimated weight of moving vehicle by BWIM system are vehicle and bridge characteristics, and measurement conditions which is related to the strain curve. In this study, theoretical review and field test were performed to evaluate effect of these factors in BWIM system. From these evaluations, we proposed a way to improve accuracy of the estimated vehicle information in BWIM system. As the results, it was known that girder type and continuity of spans in bridge are not governing factor, but its plane shape gives large influence on accuracy of the estimated vehicle information. In addition, running speed of vehicle has also large effect on the estimated accuracy of axle distance if the distance between second and third axles is short. However, weight sum of the two axles can be estimated reasonably by assuming them as one axle.

BWIM에서 중량 추정결과에 영향을 미치는 것으로는 변형률 응답파형과 관계가 있는 차량 주행특성, 교량특성 및 계측조건을 고려할 수 있다. 이 연구에서는 이들 영향인자가 BWIM에 의한 차량 정보추정에 미치는 정도를 평가하고자 이론적인 연구 및 현장실측을 실시하였다. 이러한 평가를 통하여 BWIM에 의한 차량정보추정에서의 정밀도 향상을 위한 방안을 제시하고자 한다. 연구결과, 교량의 거더형식, 경간의 연속유무에 따른 차량정보추정의 차이는 거의 없는 것으로 나타났다. 그러나 교량의 평면형상 때문에 사교가 직교보다 높은 오차율을 나타내었다. 또한 차량의 주행속도는 2축과 3축사이의 간격이 짧은 축간거리의 산정에는 큰 영향을 미치지만, 총중량 추정에는 영향이 거의 없는 것으로 나타났다.

Keywords

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