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Liquefaction exposure and impacts across New Zealand State Highways

Liquefaction exposure and impacts across New Zealand State Highways

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…

CETANZ best practice for CPT testing in NZ

CETANZ best practice for CPT testing in NZ

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….

Direct design of driven timber piles using CPT: A case study

Direct design of driven timber piles using CPT: A case study

ABSTRACT Driven timber piles are a common pile type used in New Zealand. Established direct design methods from CPT, such as the LCPC method (Bustamante and Gianeselli, 1982), do not include driven timber piles as a specific pile type in those methods. In this study,…

Use of tremie concrete in New Zealand deep foundations

Use of tremie concrete in New Zealand deep foundations

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…

Simulation of piles subjected to excavation or embankment loading

Simulation of piles subjected to excavation or embankment loading

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…