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 This paper presents proposed shear wave velocity-depth relationships for six prominent geological formations from the Nelson-Tasman area. Shear wave velocity profiles were developed for a selection of sites across the Nelson-Tasman Region using a combination of active source and passive source surface wave testing…
ABSTRACT The State Highway network in Eastern Bay of Plenty crosses terrain with varied geomorphology and geology with a range of landslide types presenting a major geological hazard. This paper presents examples of recent landslides that have affected the highway network, including the underlying geological…
ABSTRACT On 26th November 2017 a localised thunderstorm cell over the hills behind Roxburgh, Central Otago, produced up to an estimated 150mm of rain over a three-hour period. Four catchments experienced severe flooding and sediment movement (debris flows or debris floods), resulting in significant sediment…
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 This paper describes the design evolution of two NDRRA (Natural Disaster Relief and Recovery Arrangements) sites, designated as 9501 and 4551, damaged in March 2017 by Category 4 Severe Tropical Cyclone Debbie and associated intense rainfall and subsequent flooding. The sites were two…
ABSTRACT Sumner Road between Lyttelton to Evans Pass was severely affected by rockfall as a result of the 2010-2011 Canterbury Earthquake Sequence. Approximately 2 km of Sumner Road was closed to all traffic following the 22 February 2011 earthquake. Sumner Road was used as a…
ABSTRACT Cone Penetration Testing (CPT) is commonly used in routine geotechnical investigations throughout NZ. It provides a valuable resource for the geotechnical profession. However, different contractors undertake CPT testing in slightly different ways, and they may not necessarily follow recognised international standards for the test….
ABSTRACT Tremie concrete enables the construction of deep foundations such as piles and diaphragm walls as it is self-compacting, can be placed under a support fluid and is resistant to segregation. As the urban landscape within New Zealand increases in density, deeper and more complex…
ABSTRACT This paper provides investigation into response of (forward-rotated or backrotated) piles subjected to embankment loading, in light of 2-/3-layer models. First, recent advance is briefly reviewed concerning range of parameters used to model piles subjected to excavation and embankment loading. Second, simulations of six…