Assessment of Liquefaction-Induced Land Damage for Residential Christchurch

2014 ◽  
Vol 30 (1) ◽  
pp. 31-55 ◽  
Author(s):  
S. van Ballegooy ◽  
P. Malan ◽  
V. Lacrosse ◽  
M. E. Jacka ◽  
M. Cubrinovski ◽  
...  
Keyword(s):  
Lateral Spreading ◽  
Assessment Process ◽  
Ground Subsidence ◽  
Residential Areas ◽  
Cone Penetration ◽  
Ground Failure ◽  
Cone Penetration Tests ◽  
Significant Damage ◽  
Penetration Tests

Christchurch, New Zealand, experienced four major earthquakes (Mw 5.9 to 7.1) since 4 September 2010 that triggered localized to widespread liquefaction. Liquefaction caused significant damage to residential foundations due to ground subsidence, ground failure, and lateral spreading. This paper describes the land damage assessment process for Christchurch, including the collection and processing of extensive data and observations related to liquefaction, the characterization of liquefaction effects on land performance, and the quantification of losses for insurance compensation purposes. The paper also examines the effectiveness of several existing liquefaction vulnerability parameters and a new parameter developed through this research, Liquefaction Severity Number ( LSN), in explaining the observed liquefaction-induced damage in residential areas of Christchurch using results from 11,500 cone penetration tests (CPTs) as well as a robust regional groundwater model.

scholarly journals The Saint-Jude landslide of 10 May 2010, Quebec, Canada: Investigation and characterization of the landslide and its failure mechanism

2017 ◽  
Vol 54 (10) ◽  
pp. 1357-1374 ◽  
Author(s):  
Ariane Locat ◽  
Pascal Locat ◽  
Denis Demers ◽  
Serge Leroueil ◽  
Denis Robitaille ◽  
...  
Keyword(s):  
Failure Mechanism ◽  
Morphological Analysis ◽  
Failure Surface ◽  
Cone Penetration ◽  
Dislocation Mechanism ◽  
Light Detector ◽  
Cone Penetration Tests ◽  
River Bed ◽  
Penetration Tests

A landslide occurred on 10 May 2010, along the Salvail River, in the municipality of Saint-Jude, Quebec. Debris of the landslide was formed of clay having horst and graben shapes, typical of spreads in sensitive clays. A detailed investigation was carried out by the Ministère des Transports, de la Mobilité durable et de l’électrification des transports du Québec, in collaboration with Université Laval, with the objective of characterizing this landslide, determining the causes, and learning about its failure mechanism. The soil involved was a firm, grey, sensitive, lightly overconsolidated clay with some silt. Data from piezometers installed near the landslide indicated artesian conditions underneath the Salvail River. Cone penetration tests allowed the location of two failure surface levels: the first one starting 2.5 m below the initial river bed, extending horizontally up to 125 m, and a second one 10 m higher, reaching the backscarp. Investigation of the debris with onsite measurements, light detector and ranging surveys, cone penetration tests, and boreholes allowed a detailed geotechnical and morphological analysis of the debris and reconstitution of the dislocation mechanism of this complex spread.

Imaging and characterization of facies heterogeneity in an alluvial aquifer using GPR full-waveform inversion and cone penetration tests

2015 ◽  
Vol 524 ◽  
pp. 680-695 ◽  
Author(s):  
Nils Gueting ◽  
Anja Klotzsche ◽  
Jan van der Kruk ◽  
Jan Vanderborght ◽  
Harry Vereecken ◽  
...  
Keyword(s):  
Waveform Inversion ◽  
Alluvial Aquifer ◽  
Full Waveform Inversion ◽  
Cone Penetration ◽  
Cone Penetration Tests ◽  
Full Waveform ◽  
Penetration Tests

Prediction of pile shaft resistance using cone penetration tests (CPTs)

2012 ◽  
Vol 45 ◽  
pp. 74-82 ◽  
Author(s):  
Mohammad Hassan Baziar ◽  
Armin Kashkooli ◽  
Alireza Saeedi-Azizkandi
Keyword(s):  
Cone Penetration ◽  
Shaft Resistance ◽  
Pile Shaft ◽  
Cone Penetration Tests ◽  
Penetration Tests

scholarly journals Using CPTs to derive thermal properties of soil

2020 ◽  
Vol 205 ◽  
pp. 04005
Author(s):  
Philip J. Vardon ◽  
Joek Peuchen
Keyword(s):  
Thermal Conductivity ◽  
Heat Capacity ◽  
Laboratory Tests ◽  
Field Investigation ◽  
Volumetric Heat Capacity ◽  
Cone Penetration ◽  
Cone Penetration Tests ◽  
Penetration Tests ◽  
Properties Of Soil

A method of utilizing cone penetration tests (CPTs) is presented which gives continuous profiles of both the in situ thermal conductivity and volumetric heat capacity, along with the in situ temperature, for the upper tens of meters of the ground. Correlations from standard CPT results (cone resistance, sleeve friction and pore pressure) are utilized for both thermal conductivity and volumetric heat capacity for saturated soil. These, in conjunction with point-wise thermal conductivity and in situ temperature results using a Thermal CPT (T-CPT), allow accurate continuous profiles to be derived. The CPT-based method is shown via a field investigation supported by laboratory tests to give accurate and robust results.

Sign in / Sign up

Export Citation Format

Share Document