Browsing Proceedings of the 2021 New Zealand Society for Earthquake Engineering Annual Technical Conference by Subject "Improving understanding of seismic hazard and risk"
Now showing items 1-20 of 25
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A comparison of New Zealand seismic code requirements with other major design codes in the implementation of seismic resilient devices
(2021-04-14)In the ever-evolving earthquake engineering field, the need of the hour is to achieve earthquake-resistant buildings which have immediate occupancy following an earthquake. This implies that the demand for resilient dampers ... -
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 ... -
Case studies on low damage mass timber structures with resilient connections
(2021-04-14)There is increasing public pressure to have seismic-resistant structures made with massive wooden panels such as Cross Laminated Timber (CLT). It is well-known that the type and behaviour of the connections govern the ... -
Development and implications of an expanded national earthquake catalogue for New Zealand
(2021-04-14)In the last two decades, New Zealand (NZ) has experienced significant earthquakes, including the 2010 M 7.2 Darfield, 2011 M 6.2 Christchurch, and 2016 M 7.8 Kaikōura events. Amongst these large events, tens of thousands ... -
Development of the New Zealand Community Fault Model – version 1.0
(2021-04-14)There has been a long-identified need in New Zealand for a community-developed three-dimensional fault model that is accessible and available to all. Over the past year, work has progressed on building and parameterising ... -
Dras Fault: a major active fault in Kashmir Himalaya
(2021-04-14)Previous works have shown that the oblique tectonic convergence between the lithospheric plates of India and Eurasia in NW Himalaya is primarily manifested by the formation of a series of fold- and thrustbelts, and the ... -
Earthquake prone public buildings: balancing life safety risks and community costs
(2021-04-14)The focus on seismic risk following the 2011 Christchurch and 2016 Kaikoura earthquakes has seen the closure of several public buildings across the country. The introduction of the Building (Earthquake-prone Buildings) ... -
Evaluation of a geospatial liquefaction model using land damage data from the 2016 Kaikoura earthquake
(2021-04-14)Earthquake induced liquefaction and lateral spreading can cause major damage to buildings and infrastructure networks. Common procedures to identify exposed areas such as cone penetration testing require extensive resources ... -
Experimental loading protocols to evaluate the seismic performance of floor systems
(2021-04-14)Major earthquakes, such as the Canterbury and Kaikoura events recorded in New Zealand in 2010 and 2016 respectively, highlighted that floor systems can be heavily damaged. At a reduced or full scale, quasi-static experimental ... -
Full Waveform Tomography for the upper South Island region, New Zealand
(2021-04-14)In this paper, we apply Full Waveform Tomography (FWT) based on the Adjoint-Wavefield (AW) method to iteratively invert an existing 3-D geophysical velocity model for the upper South Island region, New Zealand. Through the ... -
Ground motion simulation validation with explicit uncertainty incorporation for small magnitude earthquakes in New Zealand
(2021-04-14)This study investigates the uncertainty of simulated earthquake ground motions for small-magnitude events (Mw 3.5 – 5) in Canterbury, New Zealand. 148 events were simulated with specified uncertainties in: event magnitude, ... -
Identifying attributes influencing failure mechanisms in unreinforced masonry buildings using machine learning
(2021-04-14)Unreinforced masonry buildings comprise a major part of New Zealand's built heritage and were significantly damaged during the 2010-2011 Canterbury Earthquake sequence. There were 627 URM building assessed in the surveys ... -
Investigating the impact of design criteria on the expected seismic losses of an office building
(2021-04-14)Low Damage Seismic Design (LDSD) guidance material being developed by Engineering NZ is considering a design drift limit for multi-storey buildings of 0.5% at a new damage control limit state (DCLS). The impact of this new ... -
Is the bar too high? Foundation settlement in post-earthquake Christchurch
(2021-04-14)Three case studies are presented to show how significant ground deformation occurred with the Canterbury earthquake sequence, which in turn resulted in slopes to shallow foundations. The case studies are all from the ... -
Philosophical reflexions following the Lyttleton 2011 New Zealand Earthquake: Ten years after
(2021-04-14)At 12:51 p. m. on 22 February 2011, the Mw 6.3 Lyttelton earthquake struck the Canterbury region of New Zealand. The seismic event was reported as the result of the rupture of a previously unknown geological fault, 5.9 km ... -
Residential Building Repair Cost and Claim Settlement Time from the Canterbury Earthquake Sequence
(2021-04-14)This study analyses the Earthquake Commission’s (EQC) insurance claims database to investigate the influence of seismic intensity and property damage resulting from the Canterbury Earthquake Sequence (CES) on the repair ... -
Risk-Targeted Hazard Spectra for Seismic Design in New Zealand
(2021-04-14)The promotion of risk-targeted hazard spectra as the basis of seismic design internationally has increased over the past decade. Risk-targeted hazard spectra are derived through convolution of hazard curves with representative ... -
Seaview Wharf: risk-based thinking underpins the future
(2021-04-14)Wellington’s Seaview Wharf is a critical asset in the Lower North Island fuel supply system, including after significant seismic events. Recent annual fuel supply for the region has exceeded 1 Million tonnes, and there is ... -
Seismic upgrading of friction-damped steel frames integrated with self-centring devices
(2021-04-14)Conventional friction-based damping devices are known for their large energy dissipation capacity and economic benefits compared to other seismic mitigation systems. These devices have been implemented in many practical ... -
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 ...