In-field post-earthquake performance observations of winery facilities in the Marlborough region, New Zealand, were documented following the 14 November 2016 Kaikōura earthquake and subsequent aftershocks. Observations presented and discussed herein include land damage to vineyards and the performance of winery building facilities, legged and flat-bedded storage tanks, barrel racking systems, and catwalks. A range of winery facilities were instrumented with tri-axial accelerometers to capture seismic excitations during aftershocks, with the specific aim to instrument different storage tanks having varying capacities and support systems to better understand the dynamic performance and actual forces experienced up the height of the tanks during an earthquake, with preliminary results reported herein.
With the recent high level of earthquake activity throughout New Zealand there is growing awareness of the need for quick and reliable determination of whether buildings are safe. In parallel, on-going advances in sensors and computing technology have resulted in the potential for new and innovative sensing systems which could change the way that civil infrastructure is monitored, controlled and maintained.
Following the 21 July 2013, MW 6.5 Cook Strait earthquakes, seven buildings in the Wellington region were instrumented with low-cost accelerometers to record building response data sets during aftershock excitations. A summary of the data analyses and insightful information obtained through processing and interpretation of the raw data is presented. Key challenges and considerations of installing a permanent structural monitoring system into buildings in New Zealand are discussed. The goal was to relate building performance indicators to decision making processes regarding the safety and resilience of structures post-earthquake. The information obtained was sufficiently reliable and valuable to the decision making process and New Zealand can expect more permanently instrumented buildings in the future.
In the aftermath of the 2010-2011 Canterbury earthquakes in New Zealand, the residual capacity and reparability of damaged reinforced concrete (RC) structures was an issue pertinent to building owners, insurers, and structural engineers. Three precast RC moment-resisting frame specimens were extracted during the demolition of the Clarendon Tower in Christchurch after sustaining earthquake damage. These specimens were subjected to quasi-static cyclic testing as part of a research program to determine the reparability of the building. It was concluded that the precast RC frames were able to be repaired and retrofitted to an enhanced strength capacity with no observed reduction in displacement capacity, although the frames with "shear-ductile" detailing exhibited less displacement ductility capacity and energy dissipation capacity than the more conventionally detailed RC frames. Furthermore, the cyclic test results from the earthquake-damaged RC frames were used to verify the predicted inelastic demands applied to the specimens during the 2010-2011 Canterbury earthquakes.
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