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Soil profile characterisation of Christchurch Central Business District st…
Research papers, University of Canterbury Library
This paper presents an overview of the soil profile characteristics at strong motion station (SMS) locations in the Christchurch Central Business District (CBD) based on recently completed geotechnical site investigations. Given the variability of Christchurch soils, detailed investigations were needed in close vicinity to each SMS. In this regard, CPT, SPT and borehole data, and shear wave velocity (Vs) profiles from surface wave dispersion data in close vicinity to the SMSs have been used to develop detailed representative soil profiles at each site and to determine site classes according to the New Zealand standard NZS1170.5. A disparity between the NZS1170.5 site classes based on Vs and SPT N60 investigation techniques is highlighted, and additional studies are needed to harmonize site classification based on these techniques. The short period mode of vibration of soft deposits above gravels, which are found throughout Christchurch, are compared to the long period mode of vibration of the entire soil profile to bedrock. These two distinct modes of vibration require further investigation to determine their impact on the site response. According to current American and European approaches to seismic site classification, all SMSs were classified as problematic soil sites due to the presence of liquefiable strata, soils which are not directly accounted for by the NZS1170.5 approach.
BeckerFraserPhotos June 2012 photograph 222
Images, UC QuakeStudies
Photograph captioned by BeckerFraserPhotos, "The site of Manchester Courts, 158-160 Manchester Street".
BeckerFraserPhotos October 2011 photograph 329
Images, UC QuakeStudies
Photograph captioned by BeckerFraserPhotos, "Demolition site of National Library building, Salisbury Street".
BeckerFraserPhotos October 2011 photograph 328
Images, UC QuakeStudies
Photograph captioned by BeckerFraserPhotos, "Demolition site of National Library building, Salisbury Street".
BeckerFraserPhotos October 2011 photograph 332
Images, UC QuakeStudies
Photograph captioned by BeckerFraserPhotos, "Demolition site of National Library building, Salisbury Street".
BeckerFraserPhotos October 2011 photograph 333
Images, UC QuakeStudies
Photograph captioned by BeckerFraserPhotos, "Demolition site of National Library building, Salisbury Street".
BeckerFraserPhotos March 2012 photograph 361
Images, UC QuakeStudies
Photograph captioned by BeckerFraserPhotos, "Wildflowers on the site of a demolished building in Sydenham".
BeckerFraserPhotos July 2011 photograph 926
Images, UC QuakeStudies
A photograph captioned by BeckerFraserPhotos, "The site of Joe's Garage on Hereford Street, next to Calendar Girls".
BeckerFraserPhotos April 2011 photograph 657
Images, UC QuakeStudies
Photograph captioned by BeckerFraserPhotos, "The cleared site of St Paul's Church on Cashel Street".
Tributes at the CTV site, Madras Street
Images, eqnz.chch.2010
Friday 22 February 2013. File reference: CCL-2013 -02-22-IMG_4062 From the collection of Christchurch City Libraries.
BeckerFraserPhotos June 2012 photograph 022
Images, UC QuakeStudies
Rubble from a demolished building on Kilmore Street.
BeckerFraserPhotos May 2013 photograph 149
Images, UC QuakeStudies
The PricewaterhouseCoopers demolition site on Armagh Street viewed through a barbed wire fence. Water has filled the basement area.
BeckerFraserPhotos March 2012 photograph 074
Images, UC QuakeStudies
Photograph captioned by BeckerFraserPhotos, "The remains of 23 Exeter Street, the former convent in Lyttelton, after demolition".
BeckerFraserPhotos March 2012 photograph 077
Images, UC QuakeStudies
Photograph captioned by BeckerFraserPhotos, "The remains of 23 Exeter Street, the former convent in Lyttelton, after demolition".
BeckerFraserPhotos March 2013 photograph 100
Images, UC QuakeStudies
An aerial photograph of Cambridge Terrace near Manchester Street. In the centre of the photograph is the site of the PGC Building, now a patch of grass.
BeckerFraserPhotos June 2012 photograph 161
Images, UC QuakeStudies
Photograph captioned by BeckerFraserPhotos, "The PricewaterhouseCoopers building under deconstruction at 119 Armagh Street".
BeckerFraserPhotos March 2011 photograph 150
Images, UC QuakeStudies
A tangle of metal pipes and a roof beam on the footpath outside the Durham Street Methodist Church.
BeckerFraserPhotos March 2011 photograph 220
Images, UC QuakeStudies
A crane with a wrecking ball demolishing St Elmo Courts on Hereford Street. Behind it is the Christchurch City Council Building.
BeckerFraserPhotos March 2011 photograph 044
Images, UC QuakeStudies
Wood and pink insulation batts on Canterbury Street in Lyttelton. This construction material has been stripped from the exterior of a house.
BeckerFraserPhotos March 2011 photograph 146
Images, UC QuakeStudies
A splintered doorway in the remains of the Durham Street Methodist Church. A pile of broken masonry is sitting in front.
BeckerFraserPhotos March 2011 photograph 114
Images, UC QuakeStudies
A pile of bricks, mortar, concrete and rusty metal constituting the remains of Beckenham Baptist Church on Colombo Street. A white sign has been erected outside the church reading, "Our church is still meeting. Please join us on Sunday. We gather in the youth hall, access is from #7 Percival St. (Turn left on Tennyson then left again on Percival)".
BeckerFraserPhotos June 2012 photograph 196
Images, UC QuakeStudies
Photograph captioned by BeckerFraserPhotos, "50 Cathedral Square".
BeckerFraserPhotos March 2012 photograph 075
Images, UC QuakeStudies
Photograph captioned by BeckerFraserPhotos, "The remains of 23 Exeter Street, the former convent in Lyttelton, after demolition".
BeckerFraserPhotos April 2011 photograph 064
Images, UC QuakeStudies
A digger and two workers on top of demolition rubble from the Volcano Cafe and Lava Bar on London Street in Lyttelton.
BeckerFraserPhotos April 2011 photograph 341
Images, UC QuakeStudies
The badly-damaged Strategy building on Montreal Street.
BeckerFraserPhotos April 2011 photograph 343
Images, UC QuakeStudies
Photograph captioned by BeckerFraserPhotos, "Strategy House".
BeckerFraserPhotos April 2011 photograph 344
Images, UC QuakeStudies
The badly-damaged Strategy building on Victoria Street. The outer walls on the bottom two stories have collapsed into the building below.
BeckerFraserPhotos April 2011 photograph 332
Images, UC QuakeStudies
The badly-damaged Strategy building on Montreal Street.
BeckerFraserPhotos April 2011 photograph 335
Images, UC QuakeStudies
The badly-damaged Strategy building on Montreal Street.
BeckerFraserPhotos April 2011 photograph 512
Images, UC QuakeStudies
The port of Lyttelton viewed from Norwich Quay.