Recent Developments in New Zealand in Seismic Isolation, Energy Dissipation and Vibration Control of Structures (2019)

Whittaker, David J.

doi:10.37153/2686-7974-2019-16-882-890

Cited by 3 publications

(4 citation statements)

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“…Base isolation has been demonstrated as a highly effective system for improving the earthquake performance of both existing and new buildings. Recent studies in New Zealand have reported an increased interest and application of base isolators in the technology after the 2011 Canterbury earthquakes [48]. However, when compared to other seismically active countries such as Japan and the United States, the rate of implementation in New Zealand's construction sector has remained low [49].…”

Section: Barriers Impeding the Uptake Of Bismentioning

confidence: 99%

“…It is surprising to note that although New Zealand was one of the early pioneers of the base isolation system in 1970s, there are currently no codes of practice or guidance, forty years later. The first New Zealand guideline for the design of seismic isolation systems for buildings is currently being prepared to be used as part of alternative solution designs for compliance with the NZBC [63] and New Zealand Standards 1170.5 [48]. Other barriers relative to issues around seismic design philosophies are lack of guidelines for the design and implementation of base isolation, administrative bureaucracy, lengthy design and approval process, and the designer's reluctance to embrace new innovation [14,45,68].…”

Section: Base Isolation Seismic Design Guidelinesmentioning

confidence: 99%

“…Also, there is a lack of appropriate design standards for designers to follow when proposing seismic isolation designs for new builds [72]. This may be responsible for its low adoption rate.…”

Section: Gaps In the Literaturementioning

confidence: 99%

“…This shows that construction professionals lack understanding of what is required, and as such, they have little or no confidence in the design. Designers in New Zealand tend to improvise in the absence of a prescribed guideline, by either employing international standards or by producing a unique design for the project under NZS 1170.5 [72]. This could make seismic isolation less appealing for new construction projects.…”

Section: Group 2: Safety and Design-related Barriersmentioning

confidence: 99%

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Demystifying the Barriers and Motivators for the Adoption of Base Isolation Systems in New Zealand

et al. 2022

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A base isolator is a proven system that can significantly reduce any damage to a building in the event of an earthquake. Despite their efficacy, seismic isolators are not widely used in New Zealand, with only about forty systems in use during the 2010 and 2011 Canterbury Earthquakes. This study seeks to investigate why base isolation systems are not frequently used in seismic strengthening projects and buildings in New Zealand. It also focuses on determining ways in which seismic isolators could become more widely used in New Zealand due to increased seismic activity. This study used an exploratory sequential mixed method design, in which qualitative data were collected first through in-depth face-to-face interviews, analysed, and used to construct the quantitative instrument, which was an online questionnaire. Data were obtained from construction professionals such as architects, engineers, site-based construction personnel, and quantity surveyors. The findings of this study indicated the need for an increased awareness of base isolation systems and improved universal guidelines for the design of seismic isolators. The motivators identified include provision of monetary incentives, such as reduced insurance premiums and financial subsidies, to encourage the adoption of seismic isolators. The factors preventing the adoption of base isolation systems in New Zealand were classified as human-related, safety and design-related, and cost-related. The study’s implication is that providing a universal guideline for seismic isolators can enhance designers’ confidence. Likewise, incentives may be provided to property owners to lower the cost of implementing a base isolation system.

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Section: Barriers Impeding the Uptake Of Bismentioning

confidence: 99%