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Images for 50d; more images...

Images, eqnz.chch.2010

This winter-eve is warm, Humid the air! leafless, yet soft as spring, The tender purple spray on copse and briers! And that sweet city with her dreaming spires, She needs not June for beauty's heightening, Lovely all times she lies, lovely to-night!— From "Thyrsis: A Monody" by Matthew Arnold 1822–1888

Images, eqnz.chch.2010

Showing Ruben Blades (top-right section of image) on the corner of Lichfield and Manchester Streets after the 6.3 quake hit Christchurch 22 February 2011 and the building being demolished along with many others. This image also shows the remains of the very heavy snow fall we had on Monday 25 July 2011. The centre of the city is still cordoned o...

Images, eqnz.chch.2010

Best View - Press "L". After 36 million liters of water mysteriously disappeared from this reservoir on Huntsbury Hill following the February 22nd 6.3 earthquake in Christchurch work has started on repairing it. This image shows just how large the tank is with a work-truck parked inside it. See Video of TV3 News item:

Images, eqnz.chch.2010

The Old Lyttelton Post Office, opened in 1874, showing damage after a series of earthquakes hit Christchurch and Lyttelton over the last 9 months. Processed to capture the "feel" of the sign "Now and Forever Images".

Images, eqnz.chch.2010

Light-Relief - With no power after the 6.3 magnatude quake hit Christchurch (22 February 2011) the neighbour's freezer thawed out along with their Deep South Ice Cream - so Tiggles the Kunekune Piglet thinks the spoils of the power-cut are yummy!

Images, eqnz.chch.2010

Today is the anniversary of the 7.1 magnitude earthquake that hit Canterbury on 4 September 2010, and two lights - The White Lights of Hope - were turned on this evening from the square to help fill the city's "dark heart" and remind residents to look forward to a bright future. Note: While I was capturing this image we had a ...

Images, eqnz.chch.2010

Rugby World Cup 2011 (RWC 2011) Tournament partners have reluctantly announced that Christchurch will be unable to host the seven matches currently scheduled to be played at the AMI/Lancater Park Stadium in Christchurch. This follows a detailed assessing of damage to the Stadium, grounds and infrastructure caused by the 6.3 magnitude earthquake ...

Images, eqnz.chch.2010

Nice to see the Cabbage Tree is still standing! View On Black Demolition continues on the old Beckenham shops after the 7.1 magnitude earthquake in Christchurch on the 4th September 2010. This view is looking from the car park out at th...

Images, eqnz.chch.2010

Today is the anniversary of the 7.1 magnitude earthquake that hit Canterbury on 4 September 2010, and two lights - The White Lights of Hope - were turned on this evening from the square to help fill the city's "dark heart" and remind residents to look forward to a bright future. Note: While I was capturing this image we had a ...

Images, eqnz.chch.2010

The Cathedral of the Blessed Sacrament, Christcurch, after the 6.3 magnitude quake on 22 February 2011. When The Angels Fall Take your father's cross Gently from the wall A shadow still remaining See the churches fall In mighty arcs of sound And all that they're containing Yet all the rugged souls Looking for their lost homes Shuffle to...

Images, eqnz.chch.2010

Woolston Community Library, 1871-2011, was one of the earliest suburban libraries to open in Christchurch. Almost from the beginning, the library’s committees have fought a never-ending battle against failing finances, falling membership, unsuitable and disintegrating buildings, and threats of closure from the City Council, but somehow, the volu...

Research papers, University of Canterbury Library

Extended Direct Analysis (EDA), developed at the University of Canterbury, is an advance on the AISC Direct Analysis method for the analysis of frames subjected to static forces. EDA provides a faster, simple and more rational way to properly consider the second-order effects, initial residual stresses (IRS) and the initial imperfections or steel structures under one directional loading than conventional analysis methods. This research applied the EDA method to quantify the effect of member overstrength on frame behaviour for a single storey frame. Also, the effects of IRS, which were included in the EDA static analysis, but which are not considered explicitly in non-linear seismic analysis, were evaluated in two ways. Firstly, they were considered for simple structures subject to increasing cyclic displacement in different directions. Secondly, incremental dynamic analysis with realistic ground motion was used to quantify the likely effect of IRS in earthquakes. It was found that, contrary to traditional wisdom and practice, greater member strengths can result in lower frame strengths for frames under monotonic lateral loading. The structural lateral capacity of the overstrength case was reduced by 6% compared to the case using the dependable member strengths. Also, it resulted significantly different in member demands. Therefore, it is recommended that when either plastic analysis or EDA is used, that both upper and lower bounds on the likely member strength should be considered to determine the total frame strength and the member demands. Results of push-pull analysis under displacement control showed that for IRS ratio, gamma < 0.5 and axial compressive force ratio, N*/Ns, up to 0.5, IRS did affect the structural behaviour in the first half cycle. However, the behavior in the later cycles was not significantly affected. It also showed that the effect of initial residual stresses in the frame was less significant than for the column alone when the column was subjected to similar axial compressive force. The incremental dynamic analysis results from both cantilever column and the three-storey steel frame showed that by increasing gamma = 0 to 0.5, the effect of IRS on seismic responses, based on the 50% confidence level, was less than 3% for N*/Ns, up to 0.5.