NZGS and the Module 1 authors ran a live webinar on Module 1, Version 1 on 7 July 2022. The webinar included: Overview of the Module by Prof. Misko Cubrinovski, University of Canterbury. Overview of how the NZSEE, SESOC and NZGS advisory “Designing for Uncertainty…
The sequence of strong earthquakes in Canterbury in 2010 to 2011, most notably the devastating Mw 6.2 earthquake on 22 February 2011, the source of which was located within Christchurch, resulted in 185 fatalities and extensive damage to buildings and infrastructure. Liquefaction occurred on several occasions through the…
These guidelines for Earthquake Geotechnical Engineering Practice in New Zealand were originated by a working group of the New Zealand Geotechnical Society. The idea for the working group came from a panel discussion ‘Geotechnical Seismic Design Standards’ which took place during the NZGS Biennial Symposium ‘Earthquakes and Urban…
ABSTRACT Three important aspects in the engineering assessment of soil liquefaction, i.e. material characterization of liquefiable soils, in-situ state characterization of soils, and system response of liquefiable deposits are the subject of this paper. These aspects in the assessment are especially important in the evaluation…
Abstract The earthquakes that hit the region of Canterbury, New Zealand, in 2010-2011 resulted in severe damage to buildings and infrastructure due to widespread liquefaction of natural clean sand and silty sand deposits of fluvial origin. Despite the significant hazard posed by earthquake-induced liquefaction to…
Abstract Pumice materials, which are problematic from an engineering viewpoint, are widespread in many parts of the North Island. Following the 2010-2011 Christchurch earthquakes, a clear understanding of their properties under earthquake loading is necessary. For example, the 1987 Edgecumbe earthquake showed evidence of localised…
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…
The 2010 Darfield and 2011 Christchurch Earthquakes triggered extensive liquefaction-induced lateral spreading proximate to streams and rivers in the Christchurch area, causing significant damage to structures and lifelines. A case study in central Christchurch is presented and compares field observations with predicted displacements from the…
This paper presents insights from recent advanced laboratory testing of undisturbed and reconstituted specimens of Christchurch silty-sands. The purpose of the testing was to establish the cyclic strength of silty-sands from sites in the Central Business District (CBD), where liquefaction was observed in 4 September…
The “Liquefaction-Induced Ground Movements Effects” workshop was held on the University of California, Berkeley campus at the Faculty Club, 2-4 November 2016. Fifty-five people participated in the workshop. Invited workshop participants included leading researchers in the area of soil liquefaction and its effects in the…
