Impact and Feasibility Study of Solutions for Doubling Heavy Vehicles
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2015-02-01
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TRIS Online Accession Number:1644712
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Abstract:This research aims to study the effect of increasing the weight of trucks and/or the number of heavy vehicles on bridges In this study, the weigh-in-motion (WIM) and bridge WIM (BWIM) recorded data were used to identify the main characteristics of the representative heavy vehicle and the site-specific fatigue truck. These representative trucks along with the AASHTO design truck were used to characterize the steel and prestressed concrete bridge population sensitive to flexure using CSiBridge and AASHTOWare Bridge Rating programs. Also, the effects of different types of vehicles on the dynamic response of bridges were studied. The remaining service life along with fatigue assessment was calculated under different possible scenarios to meet the increase in freight demand on steel bridges with RC deck. Furthermore, bridge load rating and reliability was calculated for prestressed concrete girder bridges with AASHTO girder type versus those of Florida I-beam girder. Finally, the cost increase due to different loading scenarios was calculated for different possible remedy actions. This cost impact was used to calculate the bridge’s cost over the span of planning period (PP) of interest.
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