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Images, UC QuakeStudies

The damaged Liquidity bar on Oxford Terrace, seen from across the river. Part of the parapet has collapsed, damaging the awnings below, and large planters in the outdoor seating area have toppled over.

Images, UC QuakeStudies

Damage to the Visitors Centre in Kaiapoi, after the September 4th earthquake. The foundation has lifted and there are cracks along the road. Tape and fences bar the public off from access.

Images, UC QuakeStudies

The damaged Liquidity bar on Oxford Terrace, seen from across the river. Part of the parapet has collapsed, damaging the awnings below, and large planters in the outdoor seating area have toppled over.

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.

Images, UC QuakeStudies

Urban Search and Rescue personnel escorting construction workers down Colombo Street in the aftermath of the 22 February 2011 earthquake. Behind them a team of Fire Service and Urban Search and Rescue personnel can be seen using a crane to check the Forsyth Barr building for trapped people.

Images, UC QuakeStudies

Urban Search and Rescue personnel escorting construction workers down Colombo Street in the aftermath of the 22 February 2011 earthquake. Behind them a team of Fire Service and Urban Search and Rescue personnel can be seen using a crane to check the Forsyth Barr building for trapped people.