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Images for earthquakes; more images...

Images, eqnz.chch.2010

Skateboard art at Redwood Photos taken in Redwood Library on April 8 following the February 22 earthquake. File reference: CCL-2011-04-08-Redwood-After-The-Earthquake-IMG_0443 From the collection of Christchurch City Libraries

Images, eqnz.chch.2010

A quiet corner. Photos taken in Lyttelton Library on May 24, 2011 following the February 22 earthquake. File reference: CCL-2011-05-24-Lyttelton-After-The-Earthquake-IMG_19 From the collection of Christchurch City Libraries

Images, eqnz.chch.2010

Bright and airy Photos taken in Redwood Library on April 8 following the February 22 earthquake. File reference: CCL-2011-04-08-Redwood-After-The-Earthquake-IMG_0438 From the collection of Christchurch City Libraries

Images, eqnz.chch.2010

Bright and blue Redwood Library. Photos taken in Redwood Library on April 8 following the February 22 earthquake. File reference: CCL-2011-04-08-Redwood-After-The-Earthquake-IMG_0445 From the collection of Christchurch City Libraries

Images, eqnz.chch.2010

Photos taken in New Brighton on March 31 following the February 22 earthquake. File reference: CCL-2011-03-25-New Brighton-After-The-Earthquake-NB Parkland 009 From the collection of Christchurch City Libraries

Images, eqnz.chch.2010

Photos taken in Parklands Library on March 31 following the February 22 earthquake. File reference: CCL-2011-03-31-New Brighton-After-The-Earthquake-NB Parkland 020 From the collection of Christchurch City Libraries

Images, eqnz.chch.2010

Photos taken in New Brighton on March 31 following the February 22 earthquake. File reference: CCL-2011-03-25-New Brighton-After-The-Earthquake-NB Parkland 001 From the collection of Christchurch City Libraries

Images, eqnz.chch.2010

Bright and airy Photos taken in Redwood Library on April 8 following the February 22 earthquake. File reference: CCL-2011-04-08-Redwood-After-The-Earthquake-IMG_0439 From the collection of Christchurch City Libraries

Images, eqnz.chch.2010

Avonhead Park Cemetery Interment Site. File reference: CCL-2012-02-27-AvonheadParkCemeteryIntermentSite-February-2012 DSC_025.JPG From the collection of Christchurch City Libraries.

Images, eqnz.chch.2010

Portholes at the port. Photos taken in Lyttelton Library on May 24, 2011 following the February 22 earthquake. File reference: CCL-2011-05-24-Lyttelton-After-The-Earthquake-IMG_23 From the collection of Christchurch City Libraries

Images, eqnz.chch.2010

Sunshine on London Street. Photos taken in Lyttelton Library on May 24, 2011 following the February 22 earthquake. File reference: CCL-2011-05-24-Lyttelton-After-The-Earthquake-IMG_14 From the collection of Christchurch City Libraries

Images, eqnz.chch.2010

Pink and cheerful. Photos taken in Lyttelton Library on May 24, 2011 following the February 22 earthquake. File reference: CCL-2011-05-24-Lyttelton-After-The-Earthquake-IMG_16 From the collection of Christchurch City Libraries

Images, eqnz.chch.2010

Photos taken in Parklands Library on March 31 following the February 22 earthquake. File reference: CCL-2011-03-31-New Brighton-After-The-Earthquake-NB Parkland 014 From the collection of Christchurch City Libraries

Research papers, The University of Auckland Library

Perimeter Moment resisting steel frames (PMRSFs) are a commonly used seismic resisting system, placed around the perimeter of the building for maximum torsional stiffness. They are typically designed as “strong column weak beam” systems with fixed column bases. When subjected to severe earthquake demand, sufficient to push the beams into the inelastic range, it is expected that plastic hinging at the column bases will occur. However, the response of PMRSF systems to the severe 2010/2011 Christchurch earthquake series did not generate column base hinging in systems which exhibited beam yielding.

Research papers, University of Canterbury Library

This paper presents on-going challenges in the present paradigm shift of earthquakeinduced ground motion prediction from empirical to physics-based simulation methods. The 2010-2011 Canterbury and 2016 Kaikoura earthquakes are used to illustrate the predictive potential of the different methods. On-going efforts on simulation validation and theoretical developments are then presented, as well as the demands associated with the need for explicit consideration of modelling uncertainties. Finally, discussion is also given to the tools and databases needed for the efficient utilization of simulated ground motions both in specific engineering projects as well as for near-real-time impact assessment.

Research papers, The University of Auckland Library

Seismic retrofitting of unreinforced masonry buildings using posttensioning has been the topic of many recent experimental research projects. However, the performance of such retrofit designs in actual design level earthquakes has previously been poorly documented. In 1984 two stone masonry buildings within The Arts Centre of Christchurch received posttensioned seismic retrofits, which were subsequently subjected to design level seismic loads during the 2010/2011 Canterbury earthquake sequence. These 26 year old retrofits were part of a global scheme to strengthen and secure the historic building complex and were subject to considerable budgetary constraints. Given the limited resources available at the time of construction and the current degraded state of the steel posttension tendons, the posttensioned retrofits performed well in preventing major damage to the overall structure of the two buildings in the Canterbury earthquakes. When compared to other similar unretrofitted structures within The Arts Centre, it is demonstrated that the posttensioning significantly improved the in-plane and out-of-plane wall strength and the ability to limit residual wall displacements. The history of The Arts Centre buildings and the details of the Canterbury earthquakes is discussed, followed by examination of the performance of the posttension retrofits and the suitability of this technique for future retrofitting of other historic unreinforced masonry buildings. http://www.aees.org.au/downloads/conference-papers/