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contributor authorClinton M. Wood
contributor authorBrady R. Cox
contributor authorRussell A. Green
contributor authorLiam M. Wotherspoon
contributor authorBrendon A. Bradley
contributor authorMisko Cubrinovski
date accessioned2017-12-30T12:54:59Z
date available2017-12-30T12:54:59Z
date issued2017
identifier other%28ASCE%29GT.1943-5606.0001754.pdf
identifier urihttp://138.201.223.254:8080/yetl1/handle/yetl/4243364
description abstractThe 2010–2011 Canterbury earthquake sequence included a number of events that triggered recurrent soil liquefaction at many locations in Christchurch, New Zealand. However, the most severe liquefaction was induced by the Mw7.1 September 4, 2010, Darfield and Mw6.2 February 22, 2011, Christchurch earthquakes. The combination of well-documented liquefaction surface manifestations during multiple events, densely recorded ground motions during these events, and detailed subsurface characterization information at the selected sites provides an unprecedented opportunity to add quality case histories to the empirical soil liquefaction database. The authors have already documented and published 50 high-quality liquefaction case histories from these earthquakes using cone penetration test (CPT) data. This paper examines 46 of these case histories using shear-wave velocity (Vs) profiles derived from surface wave (SW) methods and a Christchurch-specific Vs correlation based on CPT tip resistance. The Vs profiles have been used to evaluate the two most commonly used Vs-based simplified liquefaction evaluation procedures (i.e., Andrus and Stokoe and Kayen et al.). An error index (EI) has been used to quantify the overall performance of these two procedures in relation to liquefaction observations. Although the two procedures are essentially equivalent for sites with normalized Vs (i.e., Vs1) <180  m/s, the Kayen et al. procedure, with 15% probability of liquefaction, provides better predictions of liquefaction triggering for sites with Vs1 greater than 180  m/s. Additionally, total EI values obtained using Vs profiles from surface wave testing in conjunction with the Kayen et al. procedure are lower than two other CPT-based triggering procedures but higher than the total EI value obtained using the Idriss and Boulanger CPT-based procedure.
publisherAmerican Society of Civil Engineers
titleVs-Based Evaluation of Select Liquefaction Case Histories from the 2010–2011 Canterbury Earthquake Sequence
typeJournal Paper
journal volume143
journal issue9
journal titleJournal of Geotechnical and Geoenvironmental Engineering
identifier doi10.1061/(ASCE)GT.1943-5606.0001754
page04017066
treeJournal of Geotechnical and Geoenvironmental Engineering:;2017:;Volume ( 143 ):;issue: 009
contenttypeFulltext


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