BeckerFraserPhotos June 2012 photograph 008

Images, UC QuakeStudies

Photograph captioned by BeckerFraserPhotos, "River Avon looking west from the Manchester Street bridge".

BeckerFraserPhotos March 2013 photograph 062

Images, UC QuakeStudies

An aerial photograph looking south west over the Christchurch CBD with the Avon River visible to the left and Hagley Park in the distance.

BeckerFraserPhotos June 2012 photograph 009

Images, UC QuakeStudies

Photograph captioned by BeckerFraserPhotos, "River Avon looking west from the Manchester Street bridge. The damaged wall by the Edmonds band rotunda can be seen".

BeckerFraserPhotos December 2011 photograph 0378

Images, UC QuakeStudies

An aerial photograph captioned by BeckerFraserPhotos, "A aerial view looking north-west over Christchurch with the River Avon in the foreground and Horseshoe Lake in the centre of the photo".

BeckerFraserPhotos October 2011 photograph 639

Images, UC QuakeStudies

Photograph captioned by BeckerFraserPhotos, "Looking from north east to south west across the CBD".

BeckerFraserPhotos March 2013 photograph 063

Images, UC QuakeStudies

An aerial photograph looking south west over the Christchurch CBD, the cathedral just visible in the centre left.

BeckerFraserPhotos March 2013 photograph 161

Images, UC QuakeStudies

An aerial photograph of New Brighton looking north-west over the Cockayne Reserve. Pages Road can be seen in the lower left.

BeckerFraserPhotos March 2013 photograph 098

Images, UC QuakeStudies

An aerial photograph looking south west over Armagh Street, with the Forsyth Barr Building and Victoria Apartments to the left, and Victoria Park to the right.

BeckerFraserPhotos March 2013 photograph 116

Images, UC QuakeStudies

An aerial photograph looking south west over Armagh Street with Victoria Square in the bottom right, the Forsyth Barr Building to the left and the Victoria Apartments to the right.

Liquefaction Evaluation in Stratified Soils

Research papers, University of Canterbury Library

The Canterbury Earthquake Sequence 2010-2011 (CES) induced widespread liquefaction in many parts of Christchurch city. Liquefaction was more commonly observed in the eastern suburbs and along the Avon River where the soils were characterised by thick sandy deposits with a shallow water table. On the other hand, suburbs to the north, west and south of the CBD (e.g. Riccarton, Papanui) exhibited less severe to no liquefaction. These soils were more commonly characterised by inter-layered liquefiable and non-liquefiable deposits. As part of a related large-scale study of the performance of Christchurch soils during the CES, detailed borehole data including CPT, Vs and Vp have been collected for 55 sites in Christchurch. For this subset of Christchurch sites, predictions of liquefaction triggering using the simplified method (Boulanger & Idriss, 2014) indicated that liquefaction was over-predicted for 94% of sites that did not manifest liquefaction during the CES, and under-predicted for 50% of sites that did manifest liquefaction. The focus of this study was to investigate these discrepancies between prediction and observation. To assess if these discrepancies were due to soil-layer interaction and to determine the effect that soil stratification has on the develop-ment of liquefaction and the system response of soil deposits.