A simplified integral composite bridge connection

Fully integral composite bridges provide a cost-effective solution in many situations. The connection between the steel girders and a reinforced concrete abutment at the position of maximum shear, moment and axial force does however pose a significant design challenge. Following earlier experience with checking a design using the method described in SCI report 180, the authors have developed an alternative connection detail, which has so far been successfully used on two projects. This greatly simplifies the transfer of forces at the connection and improves buildability significantly. Further research by the authors was carried out to identify the pitfalls when designing to current practice and to develop rigorous analysis, design and detailing rules that ensure the effectiveness of the design of this new connection. This paper describes the connection and its application to Boathouse Bridge over the A66 in Stockton-on-Tees.