BeckerFraserPhotos October 2011 photograph 612

Images, UC QuakeStudies

Photograph captioned by BeckerFraserPhotos, "CBD with Christ's College in the foreground, Canterbury Museum and the Arts Centre".

Koen Broekema's Photograph 012

Images, UC QuakeStudies

A crane and a digger demolish the Gallery Apartments building on Gloucester Street. A sign that reads, 'Road closed' has been placed in front of the security fencing.

BeckerFraserPhotos December 2011 photograph 0310

Images, UC QuakeStudies

An aerial photograph captioned by BeckerFraserPhotos, "Central city blocks bounded by Colombo Street, Hereford Street, Cashel Street, and High Street".

BeckerFraserPhotos December 2011 photograph 1961

Images, UC QuakeStudies

A photograph captioned by BeckerFraserPhotos, "The corner of Victoria Street and Kilmore Streets, overlooking the demolition site of the Copthorne Hotel on Durham Street".

BeckerFraserPhotos October 2011 photograph 614

Images, UC QuakeStudies

Photograph captioned by BeckerFraserPhotos, "Aerial view of the centre of the city, with the cathedral in the centre, and the art gallery in the foreground".

BeckerFraserPhotos December 2011 photograph 0276

Images, UC QuakeStudies

An aerial photograph of the Christchurch City Council Civic Offices and surrounding buildings. The photograph has been captioned by BeckerFraserPhotos, "The River Avon runs through this photograph and marks the western edge of the red zone".

Monotonic and cyclic bond behaviour of deformed bars in reinforced concret…

Research papers, University of Canterbury Library

A major lesson from the 2011 Christchurch earthquake was the apparent lack of ductility of some lightly reinforced concrete (RC) wall structures. In particular, the structural behaviour of the critical wall in the Gallery Apartments building demonstrated that the inelastic deformation capacity of a structure, as well as potentially brittle failure of the reinforcement, is dependent on the level of bond deterioration between reinforcement and surrounding concrete that occurs under seismic loading. This paper presents the findings of an experimental study on bond behaviour between deformed reinforcing bars and the surrounding concrete. Bond strength and relative bond slip was evaluated using 75 pull-out tests under monotonic and cyclic loading. Variations of the experiments include the loading rate, loading history, concrete strength (25 to 70 MPa), concrete age, cover thickness, bar diameter (16 and 20 mm), embedded length, and the position of the embedded bond region within the specimen (deep within or close to free surface). Select test results are presented with inferred implications for RC structures.