Search

found 6154 results

Research papers, University of Canterbury Library

In order to provide information related to seismic vulnerability of non-ductile reinforced concrete (RC) frame buildings, and as a complementary investigation on innovative feasible retrofit solutions developed in the past six years at the University of Canterbury on pre-19170 reinforced concrete buildings, a frame building representative of older construction practice was tested on the shake table. The specimen, 1/2.5 scale, consists of two 3-storey 2-bay asymmetric frames in parallel, one interior and one exterior, jointed together by transverse beams and floor slabs. The as-built (benchmark) specimen was first tested under increasing ground motion amplitudes using records from Loma Prieta Earthquake (California, 1989) and suffered significant damage at the upper floor, most of it due to lap splices failure. As a consequence, in a second stage, the specimen was repaired and modified by removing the concrete in the lap splice region, welding the column longitudinal bars, replacing the removed concrete with structural mortar, and injecting cracks with epoxy resin. The modified as-built specimen was then tested using data recorded during Darfield (New Zealand, 2010) and Maule (Chile, 2010) Earthquakes, with whom the specimen showed remarkably different responses attributed to the main variation in frequency content and duration. In this contribution, the seismic performance of the three series of experiments are presented and compared.

Images, UC QuakeStudies

A photograph of the badly-damaged Octagon Live Restaurant on the corner of Worcester and Manchester Streets. The masonry around the gable has crumbled, falling onto the footpath in front. Wire fencing has been placed around the building as a cordon.

Images, UC QuakeStudies

A photograph of the earthquake damage to the Christchurch Chinese Methodist Church on Papanui Road. The wall of the gable has crumbled, the bricks spilling onto the lawn below. Wire fencing has been placed around the building as a cordon.

Images, UC QuakeStudies

A photograph of the earthquake damage to the Christchurch Chinese Methodist Church on Papanui Road. The gable wall has crumbled, the bricks and window frame falling onto the ground. Wire fencing has been placed around the building as a cordon.

Images, UC QuakeStudies

A photograph looking west down Armagh Street towards the intersection with Colombo Street. In the background, a crane is parked on the road next to the Forsyth Barr Building. In the foreground, the pavement has risen near the tram tracks.

Images, UC QuakeStudies

A photograph of an excavator clearing rubble from several earthquake-damaged buildings on Manchester Street. In the foreground a member of an emergency management team is watching on. Several other emergency management personnel can also be seen in the distance.

Images, UC QuakeStudies

A photograph of members of the Wellington Emergency Management Office Emergency Response Team and the Red Cross, standing on the corner of Lichfield and High Streets. In the background large piles of rubble from earthquake-damaged buildings line the street.

Images, UC QuakeStudies

A photograph of the earthquake damage to Poplar Street taken from Tuam Street shortly after the 22 February 2011 earthquake. The road is completely covered by loose bricks and a car has been crushed. To the left, the corner of a building has collapsed, rubble falling into the street.

Images, UC QuakeStudies

A photograph looking south down Manchester Street from the intersection with Armagh Street. The buildings along the left side of the street have been cordoned off with wire fencing. In the distance, the Rendezvous Hotel and Hotel Grand Chancellor can be seen.

Images, UC QuakeStudies

A photograph of a room inside a flat on Poplar Street taken during the Residential Access Project. The project gave residents temporary access within the red-zone cordon in order to retrieve items from their homes. The building's outer wall has crumbled leaving the room exposed.

Images, UC QuakeStudies

A photograph of a room inside a flat on Poplar Street taken during the Residential Access Project. The project gave residents temporary access within the red-zone cordon in order to retrieve items from their homes. The building's outer wall has crumbled leaving the room exposed.

Images, UC QuakeStudies

A photograph of a room inside a flat on Poplar Street taken during the Residential Access Project. The project gave residents temporary access within the red-zone cordon in order to retrieve items from their homes. The building's outer wall has crumbled leaving the room exposed.

Images, UC QuakeStudies

Damaged shops on Manchester Street. The front wall of the top storey of these buildings has crumbled onto the street, crushing vehicles. Emergency personnel have spray painted the word "Clear" on the cars to indicate that they have been checked for trapped or injured people.

Images, UC QuakeStudies

Damaged shops on Manchester Street. The front wall of the top storey of these buildings has crumbled onto the street, crushing vehicles. Emergency personnel have spray painted the word "Clear" on the cars to indicate that they have been checked for trapped or injured people.