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Research papers, The University of Auckland Library

Case study unreinforced masonry (URM) buildings that were seismically retrofitted prior to the 2010/11 Canterbury earthquake sequence and exhibited successful performance during these earthquakes are presented herein. Selected buildings were divided into the following categories based on size and complexity: (1) simple, single storey box type buildings (i.e. electrical substations), (2) common and simple commercial buildings, and (3) large and complex clay brick and stone URM buildings. The retrofitted case study URM buildings were evaluated based on overall structural seismic performance as well as the categories of initial seismic design, heritage preservation, architectural appeal, and cost. Detailed observations of 4 representative case study buildings and a summary of findings are reported herein. http://db.nzsee.org.nz/2017/Orals.htm

Images, UC QuakeStudies

A photograph of the earthquake damage to Quinns of Papanui Road. The front walls of the store have crumbled, exposing the rooms inside. Wire fencing and road cones have been placed around the building as a cordon.

Images, UC QuakeStudies

A crane dismantles the top storey of Fuze Restaurant and Cafe, which was formerly the Harbour Board Offices building. It was constructed in 1880 from brick and Quail Island stone. It stands on the corner of Oxford Street and Norwich Quay in Lyttelton.

Images, UC QuakeStudies

A photograph of a member of the Wellington Emergency Management Office Emergency Response Team standing in front of the earthquake-damaged Avonmore House on Hereford Street. Sections of the walls have crumbled, spilling bricks and masonry onto the footpath and street below. Many of the windows have warped, breaking the glass. USAR codes have been spray-painted on one of the columns. A red sticker taped to the door indicates that the building is unsafe to enter.

Images, UC QuakeStudies

A photograph of a member of the Wellington Emergency Management Office Emergency Response Team standing in front of the earthquake-damaged Avonmore House on Hereford Street. Sections of the walls have crumbled, spilling bricks and masonry onto the footpath and street below. Many of the windows have also warped, breaking the glass. USAR codes have been spray-painted on one of the columns. A red sticker taped to the door indicates that the building is unsafe to enter.

Research papers, The University of Auckland Library

Following the 22 February 2011 Christchurch earthquake a comprehensive damage survey of the unreinforced masonry (URM) building stock of Christchurch city, New Zealand was undertaken. Because of the large number of aftershocks associated with both the 2011 Christchurch earthquake and the earlier 4 September 2010 Darfield earthquake, and the close proximity of their epicentres to Christchurch city, this earthquake sequence presented a unique opportunity to assess the performance of URM buildings and the various strengthening methods used in New Zealand to increase the performance of these buildings in earthquakes. Because of the extent of data that was collected, a decision was made to initially focus exclusively on the earthquake performance of URM buildings located in the central business district (CBD) of Christchurch city. The main objectives of the data collection exercise were to document building characteristics and any seismic strengthening methods encountered, and correlate these attributes with observed earthquake damage. In total 370 URM buildings in the CBD were surveyed. Of the surveyed buildings, 62% of all URM buildings had received some form of earthquake strengthening and there was clear evidence that installed earthquake strengthening techniques in general had led to reduced damage levels. The procedure used to collect and process information associated with earthquake damage, general analysis and interpretation of the available survey data for the 370 URM buildings, the performance of earthquake strengthening techniques, and the influence of earthquake strengthening levels on observed damage are reported within. http://15ibmac.com/home/

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 house on Avonside Drive showing damage from the 4 September 2010 earthquake. Numerous cracks in the masonry can be seen, and several sections of brick have fallen off the walls. The building's porch has also collapsed. A pile of dried liquefaction is visible in the driveway.