ABSTRACT Inclined piles have been widely applied to resist excessive lateral loading in engineering practice. Although some unsatisfactory observations were found in past earthquake events, supportive evidence was also observed in recent years. This paper aims to clarify the performance of inclined piles against liquefaction-induced…
ABSTRACT The lateral load transfer between a pile and laterally spreading ground during an earthquake is a complex soil-structure interaction problem given the significant nonlinear behaviour of soils during such an event. This interaction becomes more complex when piles are used as a retaining…
ABSTRACT New Zealand State Highways are exposed to a range of natural hazards including earthquake triggered liquefaction and lateral spreading. Using a recently developed geospatial model, a framework to assess the liquefaction risk across the State Highway network was proposed, combining liquefaction probability, recurrence and…
ABSTRACT Construction of a $77.8 million new hospital facility in Greymouth is nearing its completion. The geotechnical design framework used to mitigate liquefaction and lateral spreading is described. Design of the structural foundation systems required detailed consideration of subsidence, downdrag and lateral spread effects….
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INTRODUCTION Early this year, New Zealand Transport Agency (NZTA) has published the NZTA Stage 2 Research Report titled “Analysis of piled bridges at sites prone to liquefaction and lateral spreading in New Zealand”. The report is available on NZTA’s website at the following address: http://www.nzta.govt.nz/resources/analysis-of-piled-bridges-at-sites-prone-to-liquefaction-and-lateral-spreading-in-new-zealand/…
Abstract One of the Canterbury Earthquake Royal Commission recommendations was that “ground improvement should be considered as part of the foundation system of a building and reliability factors included in the design procedures” and that “the Ministry of Business, Innovation and Employment should consider the…
Abstract This paper presents a summary of an example of application of pseudo-static analysis in the design of a bridge on a site prone to liquefaction. The example is one of the outcomes from Stage 2 of a research project commissioned by the NZ Transport…
Abstract Wellington’s waterfront is in demand for new developments due to its proximity to the central business district, infrastructure, and harbour. This area can be impacted on by several hazards like earthquake shaking, liquefaction and lateral spread, see level rise and tsunami (tsunami not considered…
Work is currently underway to update the NZTA Bridge Manual (BM) based on recent advancements in bridge design practice in New Zealand and worldwide, and also the NZTA’s experience on the performance of bridges during the Canterbury earthquakes. In the current 2nd edition of the BM various…