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Identification of Running Vehicle Properties by Vertical Stiffener Response of Steel Girder Bridge

강 거더교의 수직보강재 응답을 이용한 주행차량의 특성 추정

  • Received : 2012.01.09
  • Accepted : 2012.02.23
  • Published : 2012.02.29

Abstract

The BWIM(Bridge Weigh-In-Motion) is a technology to identify vehicle properties, such as weight, speed, axle spacing and running lane, passing over a bridge by using dynamic response of bridge member. Such information will be used for assessing durability and establishing a maintenance strategy of roadway structures. In this paper, as a first step for developing BWIM system, analytical and experimental studies were conducted in order to verify whether the response of vertical stiffener in steel girder bridge can be used to identify vehicle properties running on the bridge. It was known from this study that such vehicle information could be estimated reasonably by using strain time history curve of a vertical stiffener due to running vehicles. It is because the effect of each axle-load of vehicle appears definitely in the curve. However, as the magnitude of strain of vertical stiffener is effected by running pattern of vehicles, further study is necessary to reduce error when estimating vehicle weight.

Keywords

bridge weigh-in-motion;vertical stiffener;steel girder bridge;dynamic analysis;field test

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Acknowledgement

Supported by : 한국연구재단