Browsing New Zealand Society for Earthquake Engineering by Author "7476b8f9-5e66-43e4-8108-5278400ce679"
Now showing items 1-16 of 16
-
Analysis of Site-Response Residuals from Empirical Ground-Motion Models to Account for Observed Sedimentary Basin Effects in Wellington, New Zealand
de la Torre, Chris; Bradley, Brendon; Lee, Robin; Tiwari, Ayushi; Wotherspoon, Liam; Kaiser, Anna (2024-04-09)Analysis of prediction-observation residuals from the empirical ground motion models (GMMs) used in the 2022 New Zealand National Seismic Hazard Model (NZ NSHM) update indicates a general underprediction of ground motions ... -
Applicability of existing CPT-Vs correlations to direct-push crosshole and cone penetration test data for shallow Holocene-aged New Zealand soil deposits
Zhou, Hui; Wotherspoon, Liam; Stolte, Andrew; McGann, Christopher (2024-04-09)A number of empirical correlations have been proposed to estimate shear wave velocity (Vs) using cone penetration test (CPT) data as a result of the growing availability of global databases. The performance of four existing ... -
Development and implications of an expanded national earthquake catalogue for New Zealand
Hutchinson, Jesse; Lee, Robin; Bradley, Brendon; Van Houtte, Chris; Kaiser, Anna; Wotherspoon, Liam (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 ... -
Estimates of site periods from mHVSR analysis of IRIS temporary seismograph networks
Stolte, Andrew; Brown, Cole; Lee, Kenneth; Manea, Elena; Wotherspoon, Liam (2023-04-19)The effects of soil stratigraphy and sedimentary basins on earthquake ground shaking are well-established. These effects can be represented using a range of site metrics, with the focus of this paper being the fundamental ... -
Evaluation of a geospatial liquefaction model using land damage data from the 2016 Kaikoura earthquake
Lin, Amelia; Wotherspoon, Liam; Motha, Jason (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 ... -
Framework Development for a Hybrid Geotechnical-Geospatial Liquefaction Assessment Model
Azul, Kristian; Orense, Rolando; Wotherspoon, Liam (2023-04-19)Liquefaction assessment can be performed using various bodies of knowledge, each with an associated accuracy based on the data involved. Liquefaction assessment models based on directly measured subsurface geotechnical ... -
Influence of remedial ground densification on seismic site amplification
Meite, Romain; Wotherspoon, Liam; Green, Russell (2023-04-19)While the capability of remedial ground densification techniques to mitigate the adverse effects of liquefaction has been widely investigated in recent decades, the characterization of ground motion amplification in the ... -
Monotonic and Cyclic Pushover Testing of Isolated Piles of the Whirokino Trestle
Chigullapally, Pavan; Hogan, Lucas; Wotherspoon, Liam (2021-04-14)In New Zealand, over 60% of State Highway bridges were designed and built during eras with low seismic provisions and most of these bridges are supported by pile foundations. An improved understanding of the in-service ... -
Multi-scenario approach for the assessment of liquefaction exposure and impact across New Zealand State Highways
Lin, Amelia; Wotherspoon, Liam; Zorn, Conrad (2024-04-09)Events such as the 2010-2011 Canterbury Earthquake Sequence or the 2016 Kaikōura earthquake demonstrated the impacts of liquefaction and lateral spreading across New Zealand infrastructure networks. Statistical liquefaction ... -
Rapid, automated, post-earthquake building assessment using a swarm of drones and machine learning techniques
del Rey Castillo, Enrique; Zhou, Yang; Liarokapis, Minas; Yang, Xiaofei; Wang, Feng; Walsh, Kevin; Wotherspoon, Liam; Ingham, Jason (2021-04-14)Completing safety evaluations of buildings is critical for the health and safety of a city’s community following a damaging earthquake. Most contemporary post-earthquake evaluations involve groups of people who physically ... -
Simplified approach to rapidly predict road blockages caused by co-seismic landslides
Lin, Amelia; Wotherspoon, Liam; Zorn, Conrad (2023-04-19)The 2016 Kaikōura earthquake triggered tens of thousands of landslides leading to several road blockages which isolated the population in Kaikōura and disrupted the transport services across the South Island. The prediction ... -
The State of Practice in SSI Modelling in New Zealand: Insights from an Engineering Profession Survey
Hnat, Theo; McGann, Christopher; Wotherspoon, Liam (2021-04-14)There is a relatively brief consideration for soil-structure interaction (SSI) effect in the New Zealand guidelines for the seismic assessment of structures. Recent earthquake events including the Kaikōura earthquake of ... -
Towards 3D ground motion simulation-based site amplification: a Wellington case study considering multiple basin geometries
Lee, Robin; Bradley, Brendon; Hill, Matthew; de la Torre, Christopher; Kaiser, Anna; Wotherspoon, Liam (2024-04-09)This paper presents a study on 3D ground motion simulation-based site amplification using the Wellington region of New Zealand as a case study. Several recent models of the Wellington sedimentary basin have been developed ... -
Tsunami resilience: Aotearoa New Zealand's path to integrated risk management and engineering design
Johnston, David; Tan, Marion; Tapuke, Kelvin; Toma, Charlotte; Stephens, Max; Wotherspoon, Liam; Leonard, Graham; Power, William; Adikari, Kasuni (2024-04-09)Tsunami threats persist along coastlines worldwide, necessitating proactive measures to safeguard lives and property. Recent catastrophic events, such as the 2004 Indian Ocean tsunami and the 2011 Japan tsunami, have ... -
Using 3D geological models to create maps of estimated Vs30 and site period
Hill, Matthew; Kaiser, Anna; Wotherspoon, Liam; Manea, Elena (2023-04-19)The 30-m time-averaged shear-wave velocity (Vs30) and the fundamental site period (T0) are useful parameters for understanding site conditions, informing geotechnical studies as well as infrastructure planning. Unfortunately, ... -
Wellington basin amplification: research goals and update from the National Seismic Hazard Model Programme
Kaiser, Anna; Hill, Matt; Wotherspoon, Liam; Bradley, Brendon; Lee, Robin; Roten, Daniel; Bourguignon, Sandra; Pancha, Aasha; Gerstenberger, Matt (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 ...