Structural Engineering and Mechanics

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Highway bridge live loading assessment and load carrying capacity estimation using a health monitoring system

  • Received : 2003.09.15
  • Accepted : 2004.06.30
  • Published : 2004.11.25
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Abstract

The Land Transport Authority of Singapore has a continuing program of highway bridge upgrading, to refurbish and strengthen bridges to allow for increasing vehicle traffic and increasing axle loads. One subject of this program has been a short span bridge taking a busy highway across a coastal inlet near a major port facility. Experiment-based structural assessments of the bridge were conducted before and after upgrading works including strengthening. Each assessment exercise comprised two separate components; a strain and acceleration monitoring exercise lasting approximately one month, and a full-scale dynamic test carried out in a single day. This paper reports the application of extreme value statistics to estimate bridge live loads using strain measurements.

Keywords

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