Understanding post-earthquake decisions on multi-storey concrete buildings in Christchurch, New Zealand

Marquis, Frédéric; Kim, Jenna Jihyun; Elwood, Kenneth J.; Chang, Stephanie E.

doi:10.1007/s10518-015-9772-8

Cited by 124 publications

(110 citation statements)

References 8 publications

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“…Following the 2010 to 2011 Canterbury earthquakes in New Zealand, over 60% of the reinforced concrete buildings in the Christchurch Central Business District were demolished . A number of factors contributed to the magnitude of demolition that took place, including insurance policies and governmental regulations, but a primary consideration was the level of damage and uncertainty regarding the residual capacity (ie, the ability of a structure that has previously been subjected to earthquake loading to exhibit desirable performance in a subsequent seismic event).…”

Section: Introductionmentioning

confidence: 99%

Effects of variation in loading protocol on the strength and deformation capacity of ductile reinforced concrete beams

Marder

Motter

Elwood

et al. 2018

Earthq Engng Struct Dyn

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Summary Understanding the impact of prior earthquake damage on residual capacity is important for postearthquake damage assessment of buildings; however, interpretation of such impact is challenging when based on tests using traditional reversed‐cyclic loading protocols. A new loading protocol, consisting of a dynamic earthquake displacement history followed by quasi‐static reversed‐cyclic loading to failure, is presented as an alternative to traditional simulated seismic loading protocols. Data are analyzed from a set of 12 nominally identical ductile reinforced concrete beams that were tested by using variations of this protocol and traditional reversed‐cyclic and monotonic protocols. Differences in the cycle content of the earthquake displacement histories applied to the test specimens allowed for the effects of load history variation below 2.2% drift to be isolated. It is found that such variation had no effect on the beam deformation capacities. The effects of dynamic loading rates are also analyzed and compared against control quasi‐static specimens. Relative strength increases due to dynamic loading are found to be more significant at yield than at ultimate. Dynamic loading rates led to modest reductions in the beam deformation capacities, but the presence of causality between these variables remains uncertain.

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Section: Introductionmentioning

confidence: 99%

Effects of variation in loading protocol on the strength and deformation capacity of ductile reinforced concrete beams

Marder

Motter

Elwood

et al. 2018

Earthq Engng Struct Dyn

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“…Recently, the New Zealand 2010-2011 Canterbury earthquake sequence severely damaged over 6000 residential buildings and disrupted the main lifelines systems of the city; the re-classification of large areas in Christchurch as liquefaction-prone zones led to the disproportional raising of repairing/rebuilding costs with an undeniable influence on demolition decisions and reconstruction time impact [6].…”

Section: Introductionmentioning

confidence: 99%

Analysis of the Population Assistance and Returning Home in the Reconstruction Process of the 2009 L’Aquila Earthquake

et al. 2017

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Abstract:The 2009 L'Aquila earthquake left approximately 67,000 homeless people. The earthquake severely damaged facilities, structures, and infrastructure of L'Aquila town, the capital of Abruzzo region, as well as 56 other municipalities in the so-called "crater". The resident population in the crater area at the time of the earthquake included 68,503 inhabitants in the city of L'Aquila and 71,081 in other municipalities of the crater, yielding a total of 139,584 inhabitants. Several solutions were adopted to host homeless people in the immediate emergency phase; then, temporary accommodations were built to host people up to the completion of the reconstruction process. This paper analyzes the timeline by which people who lived in L'Aquila city at the time of earthquake was enabled to return to their houses, either repaired and strengthened or rebuilt. In particular, this analysis covers the first phase of the reconstruction process as well as its second phase, which is currently still ongoing in L'Aquila's historical centers. The trend of a population returning home discussed herein has been determined based on data collected from different databases given by several institutions engaged in the emergency and reconstruction phases; this allowed an estimation of the number of people returned to their homes over time.

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“…The Christchurch context is unique for a number of reasons. Firstly, the city's status as a post-disaster environment with a highly damaged physical infrastructure where up to 80% of the buildings in the Central Business District (CBD) have (or will be) demolished (Marquis et al, 2015). Secondly, a population of about 367,800 people (Statistics New Zealand, 2015), much smaller than other metropolitan megacities that have entered into the 'smart city' space (e.g.…”

Section: Christchurch and Its Opportunitymentioning

confidence: 99%

Real-Time Environmental Sensors to Improve Health in the Sensing City

Marek¹,

Campbell²,

Epton³

et al. 2016

Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci.

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Theme Sessions, ThS17KEY WORDS: GIS and Health, COPD, Smart Cities, Environmental Monitoring, Air Pollution ABSTRACT:The opportunity of an emerging smart city in post-disaster Christchurch has been explored as a way to improve the quality of life of people suffering Chronic Obstructive Pulmonary Disease (COPD), which is a progressive disease that affects respiratory function. It affects 1 in 15 New Zealanders and is the 4th largest cause of death, with significant costs to the health system. While, cigarette smoking is the leading cause of COPD, long-term exposure to other lung irritants, such as air pollution, chemical fumes, or dust can also cause and exacerbate it. Currently, we do know little what happens to the patients with COPD after they leave a doctor's care. By learning more about patients' movements in space and time, we can better understand the impacts of both the environment and personal mobility on the disease. This research is studying patients with COPD by using GPS-enabled smartphones, combined with the data about their spatiotemporal movements and information about their actual usage of medication in near real-time. We measure environmental data in the city, including air pollution, humidity and temperature and how this may subsequently be associated with COPD symptoms. In addition to the existing air quality monitoring network, to improve the spatial scale of our analysis, we deployed a series of low-cost Internet of Things (IoT) air quality sensors as well. The study demonstrates how health devices, smartphones and IoT sensors are becoming a part of a new health data ecosystem and how their usage could provide information about high-risk health hotspots, which, in the longer term, could lead to improvement in the quality of life for patients with COPD.

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Understanding post-earthquake decisions on multi-storey concrete buildings in Christchurch, New Zealand

Cited by 124 publications

References 8 publications

Effects of variation in loading protocol on the strength and deformation capacity of ductile reinforced concrete beams

Effects of variation in loading protocol on the strength and deformation capacity of ductile reinforced concrete beams

Analysis of the Population Assistance and Returning Home in the Reconstruction Process of the 2009 L’Aquila Earthquake

Real-Time Environmental Sensors to Improve Health in the Sensing City

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