Advances in earthquake engineering research and practice have historically accelerated after damaging earthquakes, where observations of performance provide new insights into previously overlooked areas of seismic design. The 2010/2011 Canterbury earthquakes in New Zealand provided a unique opportunity to assess prior seismic design and construction practice, and in particular the ductile and capacity design philosophies implemented in buildings from the 1970s onwards.
Several lightly reinforced concrete walls in multi-storey buildings were observed to have formed only a limited number of cracks at the wall base with fracture of vertical reinforcement rather than the distributed cracking expected in ductile plastic hinge regions. A series of tests were conducted at the University of Auckland to address the lack of experimental data on flexure-dominant lightly reinforced concrete walls that are representative of wall designs in many countries with low or moderate seismicity.
The experimental programme comprised of 11 rectangular reinforced concrete walls that were subjected to pseudo-static cyclic loading. The tests were used to investigate minimum vertical reinforcement provisions for reinforced concrete walls and formed the basis for revisions that were adopted in both the New Zealand Concrete Structures Standard (NZS 3101) and the US Building Code Requirements for Structural Concrete (ACI 318). The recorded documentation and data collected throughout the test programme has provided a high-quality dataset that is a valuable resource to researchers investigating the seismic behaviour of reinforced concrete walls. The dataset is published and publicly available on DesignSafe-CI and the dataset content and structure will be described to support its future use.
DesignSafe-CI has provided an excellent platform for researchers to archive and share datasets. Large-scale tests can be resource intensive and so it is essential that the unique data collected is preserved and made accessible to other uses. The New Zealand Centre for Earthquake Resilience (QuakeCoRE) has promoted the use of DesignSafe-CI for publication of datasets as part of project deliverables. In addition to the dataset on lightly reinforced concrete walls, a number of other QuakeCoRE datasets from experimental test programme have been published and will be briefly described during the webinar.
Rick Henry is a senior lecturer in the Department of Civil and Environmental Engineering at the University of Auckland. His research interests include the seismic design and assessment of reinforced concrete structures, concrete wall design and repairability, precast concrete construction, and low-damage design. Rick is an associate investigator of QuakeCoRE - New Zealand Centre for Earthquake Resilience and lead for QuakeCoRE Technology Platform 1 – Large-scale Laboratory Facilities. Rick is a council member of the Concrete NZ – Learned Society, has served as a member of the technical committee for the NZ Concrete Structures Standard (NZS 3101:2006), and is a current member of ACI 318-H Seismic Provisions committee.
Yiqiu Lu is a chief structural engineer in Zuru Tech – China, leading research projects into seismic performance of buildings using intelligent construction technologies. Yiqiu received PhD in civil engineering from University of Auckland and worked as a research fellow at the same institute for three years. He finished the ILLE-QuakeCoRE collaborative project between China and New Zealand that focused on a shake-table test of a full-scale low-damage concrete wall building. Yiqiu’s research interests include seismic design of concrete structures, low-damage seismic design and intelligent construction.
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