Tay Road Bridge improvements

摘要

The Tay Road Bridge is a multi-span viaduct consisting of reinforced concrete approach ramps and steel box girder river spans, the total length is some 2.7km. The bridge was assessed in accordance with the Design Manual for Roads and Bridges which identified a number of Sub-standard elements. A Bridge Specific Assessment Live Load, BSALL, was derived to allow the assessment to be based on actual loading patterns. The paper describes the derivation of the BSALL and the strengthening of the sub standard elements. This includes the use of fibre reinforced polymers to strengthen support columns subject to vehicle collision loading and the addition of material to strengthen the connections between the main steel box girders and the transverse girders.