Search

found 444 results

Images, UC QuakeStudies

Members of the USAID Disaster Assistance Response Team (DART) sitting on the edge of the Smiths City car park, which was severely damaged during the 22 February 2011 earthquake.

Articles, UC QuakeStudies

A press release from the Office of the Press Secretary in the US White House announcing the deployment of a US Agency for International Development (USAID) Disaster Assistance Response Team (DART) to Christchurch after the 22 February 2011 earthquake. The response team included the Los Angeles County Fire Department Urban Search and Rescue Team who assisted with the search and rescue efforts.

Research papers, University of Canterbury Library

An extensive research program is on-going at the University of Canterbury, New Zealand to develop new technologies to permit the construction of multi-storey timber buildings in earthquake prone areas. The system combines engineered timber beams, columns and walls with ductile moment resisting connections using post-tensioned tendons and eventually energy dissipaters. The extensive experimental testing on post-tensioned timber building systems has proved a remarkable lateral response of the proposed solutions. A wide number of post-tensioned timber subassemblies, including beam-column connections, single or coupled walls and column-foundation connections, have been analysed in static or quasi-static tests. This contribution presents the results of the first dynamic tests carried out with a shake-table. Model frame buildings (3-storey and 5-storey) on one-quarter scale were tested on the shake-table to quantify the response of post-tensioned timber frames during real-time earthquake loading. Equivalent viscous damping values were computed for post-tensioned timber frames in order to properly predict their response using numerical models. The dynamic tests were then complemented with quasi-static push and pull tests performed to a 3-storey post-tensioned timber frame. Numerical models were included to compare empirical estimations versus dynamic and quasi-static experimental results. Different techniques to model the dynamic behaviour of post-tensioned timber frames were explored. A sensitivity analysis of alternative damping models and an examination of the influence of designer choices for the post-tensioning force and utilization of column armouring were made. The design procedure for post-tensioned timber frames was summarized and it was applied to two examples. Inter-storey drift, base shear and overturning moments were compared between numerical modelling and predicted/targeted design values.

Images, UC QuakeStudies

A photograph of workers and members of the Hutt City Emergency Response team and New Zealand Urban Search and Rescue team posing for a photograph. The photograph was taken outside the United States headquarters in Latimer Square.

Images, UC QuakeStudies

A member of the USAID Disaster Assistance Response Team (DART) standing near the edge of the Smiths City car park, which was severely damaged during the 22 February 2011 earthquake.

Images, UC QuakeStudies

A member of the USAID Disaster Assistance Response Team (DART) inspecting a crushed car on the Smiths City car park, which was severely damaged during the 22 February 2011 earthquake.

Images, UC QuakeStudies

The USAID Disaster Assistance Response Team (DART) photographed outside their headquarters in Latimer Square. Latimer Square was set up as a temporary headquarters for emergency management personnel after the 22 February 2011 earthquake.