S.A.B. Farquhar & Y.F. ThorpTonkin & Taylor Ltd, New Zealand ABSTRACTThe City Rail Link (CRL) is the largest transport infrastructure project ever to be undertaken in New Zealand. It comprises a 3.45 km twin-tunnel underground rail link up to 42 m below the city centre….
C.A. de la Torre, M. Cubrinovski & B.A. BradleyDepartment of Civil and Environmental Engineering, University of Canterbury, Christchurch, New Zealand.S.S. BoraGNS Science, Avalon, New Zealand. ABSTRACTThis paper summarises the development and implementation of an adjustment factor for PGA from the 2022 update of the New…
Dr Burt LookAGTRE Pty Ltd, Queensland, Australia. ABSTRACTThis paper has 2 parts; 1) Cognitive Dissonance in geotechnical practice and 2) Risk and uncertainty in practice. To advance geotechnical engineering practice, bridging the gap between empirical judgment and statistical analysis is essential.Cognitive dissonance—conflicts between beliefs and…
This paper was originally prepared for the Australian Geomechanics Society Vic symposium in 2020 and is reproduced by permission of AGS Abstract Climactic warming caused by the emissions of anthropogenic greenhouse gasses is occurring across the globe. These changes will increase the exposure of the built…
Abstract Pumice-rich deposits are found in a number of locations around the world, and in particular across large areas of the North Island of New Zealand. Pumice grains are commonly described as being lightweight, highly crushable, and vesicular in nature. These characteristics give rise to…
Lecture Summary There is a growing emphasis on Displacement Based Earthquake Design (DBD) analysis for buildings, retaining walls and bridge structures. DBD is specified as the preferred design method for highway structures in a draft revision of Section 5 of the Bridge Manual (NZ Transport…
Abstract This paper describes the geotechnical aspects of a collaborative seismic assessment and foundation strengthening design for an existing building in the Tauranga CBD. The reinforced concrete 6 storey high structure is supported on concrete piles founded on potentially liquefiable volcanic soils. Initial assessments concluded…
Abstract Results from high strain dynamic pile testing (PDA) of impact driven piles are frequently correlated to pile driving sets and temporary compression, to obtain site specific modifications of driving formulae. An accurate record of driving set and temporary compression is required to obtain meaningful…
Abstract The Mackays to Peka Peka Expressway is part of the Wellington Northern Corridor, identified as a Road of National Significance for New Zealand. The Expressway runs in close proximity to several wetlands of significant ecological and cultural value with unique fauna and flora, and…
Abstract The movement of many landslides is controlled by the force imbalance associated with a reduction in shear resistance caused by a decrease in normal effective stress as pore water pressures increase. This basic premise might lead to an assumption that the movement rate has…
