Browsing Proceedings of the 2021 New Zealand Society for Earthquake Engineering Annual Technical Conference by Issue Date
Now showing items 41-60 of 115
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Drift Demand Estimates for Inelastic Torsional Response of Half-scale Seven-storey RC Specimens
(2021-04-14)Existing reinforced concrete buildings with irregularities are susceptible to torsional response and resulting localised damage or collapse under seismic excitation. Primary source of torsional response can be inherent ... -
Influence of damping models on nonlinear seismic response of a base isolated building
(2021-04-14)This paper discusses the effect of different damping models on nonlinear seismic response of a 8 storey 2D base isolated (BI) building: (1) Rayleigh damping proportional to the mass and initial stiffness matrices, (2) ... -
Performance of Taranaki Volcanic Silts under Cyclic Loading
(2021-04-14)WSP has been involved in a number of building projects in New Plymouth. Some of the buildings are founded on volcanic silts (Taranaki ash). Field and simplified laboratory tests often indicate that these materials are ... -
An attempt to determine a relationship between a mass-spring-friction damper single-degree-of-freedom system’s equivalent viscous damping ratio and its corresponding friction coefficient
(2021-04-14)Damping forces are always present in real structures, occurring in several different forms, making them challenging to model expressly. Damping is often assumed to be viscous in nature, due to the simplicity of the ... -
How effective is a composting toilet system for protecting human health in an emergency context?
(2021-04-14)The Wellington Region is highly vulnerable to large earthquakes as it is crossed by active faults. Expected timeframes of 1 to 2 years for the re-establishment of networked wastewater management services provide urgency ... -
Investigation of the Plastic Drift Capacity of RC Frames with Beam-Column Joint Failure
(2021-04-14)MBIE/NZSEE guidelines have various methods to assess existing buildings, of which Displacement Based Assessment (DBA) is one. This paper reports on the application of DBA to reinforced concrete (RC) frames where beam-column ... -
Finite Element Analyses of Hollow Core Units Subjected to Shear and Torsion
(2021-04-14)A building boom in the 1980s allowed pre-stressed hollow-core floor construction to be widely adopted in New Zealand, even though the behaviour of these prefabricated elements within buildings was still uncertain. Inspections ... -
Determining the realistic rotational stiffness of column base connections in steel seismic resisting systems
(2021-04-14)The New Zealand Steel Structures Standard, NZS 3404, provides an upper and lower rotational stiffness boundary for fixed and pinned column base connections for structural analysis, respectively. These boundaries aim to ... -
Re-emerging from the rubble: What is delaying regeneration of Christchurch CBD?
(2021-04-14)Ten years since the February 2011 earthquakes devastated Christchurch CBD, partially demolished, derelict buildings and poorly maintained vacant sites remain in the post-earthquake landscape. While Christchurch City Council ... -
Using a self-centring friction damper as anchorage system for industrial tanks and vessels
(2021-04-14)The conventional tank’s connections make the tanks to be either fully restrained or free for rocking motion, which generally creates a high level of force due to lack of ductility or large displacement demand due to uplift ... -
Outlook for earthquake early warning for Aotearoa New Zealand: Insights from initiating a community-of-practice
(2021-04-14)A community-of-practice (CoP) is a community that comprises of members that build relationships with each other to create technical advancements motivated by shared goals. Establishing communities-of-practice has been ... -
Evaluation of the ShakeOut earthquake drill and use of protective actions in Aotearoa New Zealand
(2021-04-14)Many earthquake injuries in Aotearoa New Zealand result from people falling or being struck by flying objects during shaking. Since 2012, the ShakeOut earthquake (and now tsunami) drill has aimed to teach the protective ... -
Source modelling insights from ground motion simulation validation of moderate magnitude active shallow crustal earthquakes in New Zealand
(2021-04-14)Hybrid broadband ground motion simulation validation has been an ongoing effort in NZ with recent studies focussed on active shallow crustal earthquakes of large magnitude (Mw>7.0) and small magnitude (3.5<Mw≤5.0). Lessons ... -
Application of the Geotechnical Step-Change Provisions of the 2017 MBIE Guidelines for the Seismic Assessment of Buildings
(2021-04-14)The Seismic Assessment of Existing Buildings, Technical Guidelines for Engineering Assessments (“the Guidelines”) provides engineers with a consistent means to assess the seismic behaviour of existing buildings with respect ... -
Assessment of boundary conditions for 2D geotechnical site-response analysis with soil heterogeneity
(2021-04-14)This paper examines various boundary condition assumptions for modelling 2D geotechnical site response, which requires a more sophisticated treatment of the boundary and loading conditions than what is typically required ... -
Developing LSN-based pipe repair rate functions utilising data from the 2011 Canterbury earthquakes
(2021-04-14)The Canterbury Earthquake Sequence adversely impacted built, economic and social environments. This included widespread physical damage to the water supply pipe network in Christchurch, resulting in long service disruptions. ... -
Investigation of vertical reinforcement termination in lightly reinforced concrete walls
(2021-04-14)Reinforced concrete (RC) structural walls are effective lateral force-resisting components commonly implemented in tall buildings. Recent studies have investigated the impact of minimum vertical reinforcement limits on the ... -
Adequacy and Retro-Fitting of Timber Frame House Foundations on Slopes
(2021-04-14)Previous studies have indicated that there are significant issues with the structural strength and stability of many existing house foundations on sloping sites. This was confirmed after the Christchurch earthquakes, where ... -
Hazard-consistent collapse risk assessment of steel moment frame buildings in Wellington
(2021-04-14)This study evaluates the seismic collapse risk of two modern ductile steel moment frame buildings designed as per the NZS 1170.5 seismic design standard. A four and twelve storey steel moment frame buildings located in ... -
Wellington basin amplification: research goals and update from the National Seismic Hazard Model Programme
(2021-04-14)In Wellington, 3D basin amplification effects observed at 1 – 2 second spectral periods were identified as one factor likely to have exacerbated damage to mid-rise structures during the 2016 Mw 7.8 Kaikōura earthquake ...