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Prestressed concrete bridges with corrugated steel webs represent a relatively new type of composite structure. More than 40 such bridges have been built in China since 2005, ranging from simply supported spans to continuous girder bridges and long-span cable-stayed structures. Compared with conventional concrete box girders, they are cheaper to build, lighter and more efficiently prestressed – but to date there has been little use in the UK. This paper presents the historical background, structural characteristics and construction methods of corrugated steel web bridges. A new technology is proposed to enhance efficiency and safety during incrementally launched construction, and design technologies and future developmental trends are discussed.

The head stud connector and the perfobond rib connector are the most common forms of ductile and rigid shear connector, respectively, but have strengths and weaknesses. This study evaluates the behaviour of a single perfobond rib with head stud shear connector that combines the advantages of both. First, a shear resistance equation is proposed to predict the strength of the single perfobond rib with head stud shear connector based on equations for the head stud connector and the single perfobond rib shear connector. Five groups of single perfobond rib with head stud shear connectors, ten push-out test specimens in total, were used to investigate the fracture failure mode, load–slip relationship, shear capacity and ductility of the specimens. Based on the test results, the influences of the parameters of the shear connector on shear capacity are discussed. The experiments show that the single perfobond rib with head stud shear connector is superior in terms of shear resistance and ductility. Shear capacity and corresponding relative slip of the specimens increase with increasing diameter of the head stud and transverse rebar, whereas ductility decreases. The accuracy of the proposed shear-capacity equation is verified by comparison with the test results.

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