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Images, eqnz.chch.2010

20131228_6787_1D3-82 Twelve Days of Christmas (part 2) The NG building on Madras Street was given the go ahead to repair earthquake damage, which the owners did at some expense, Now, the government want this land to build a central city stadium, so there is a protest on the windows set to the Christmas song the Twelve Days of Christmas. 12 mi...

Images, eqnz.chch.2010

20131228_6797_1D3-58 The old Odeon Theatre The back of the old Odeon movie theatre, that was for about 15-20 years a New Life Christian Centre. This is earthquake damage, although the roof was lifted off in 2011. I don't know whether this is a building that they want to save or still awaiting demolition. The smaller building to the immediate...

Images, eqnz.chch.2010

The sign reads: The CTV Building was headquarters of Canterbury Television (CTV) and also housed King’s Education language School, a medical clinic, Hair Consultants, Relationship Services and a nursing school. On February 22nd 2011 the building collapsed as a result of a major earthquake. Sadly, 115 people who were in the building lost their l...

Images, eqnz.chch.2010

On the day the the government and council jointly announced who will fund what, for the Christchurch rebuild, a rainbow appears over the rebuild of the Latimer Hotel. For the central city the figures are: NZ$4.9 billion with $2.9 billion coming from central government and $1.9 billion coming from the local city council (us ratepayers in Christc...

Images, eqnz.chch.2010

The flooded Bexley Wetlands, now about 1 - 1.5metre below pre earthquake level. The short length of fence (mid ground) was on the "river track" that the council closed about three years ago. The whole track in this view is now under about 500mm water at high tide. The main track in front of the houses was, prior to earthquakes, below the leve...

Images, eqnz.chch.2010

Maybe it should be titled "Pray Here"! The old church buildings next to the Christchurch Basilica (Cathedral of the Blessed Sacrament) have been demolished and replaced with ANOTHER Wilson's Car Park. Hundreds of sites in the city where buildings have been demolished after the earthquakes have been replaced in the short term by car parks!

Images, eqnz.chch.2010

The old Christchurch Railway Station Clock Tower was damaged during the 7.1 magnitude quake on 4 September 2010 and was braced by the wooden sleeve until repaired. However, although the sleeve did its job during the 6.3 magnitude quake on 22 February 2011, the lower part of the tower started to break away.

Images, eqnz.chch.2010

Kia Kaha (in the little red love-heart on the fence) can be translated from the Maori language as “Be strong and fearless!” “Be Proud!” or “Stand tall!” The term is used in many situations to give encouragement and support to family, friends and mates. Taken one week after the 6.3 magnitude quake hit Christchurch 22 February 2011. Proce...

Images, eqnz.chch.2010

The Church of the Good Shepherd (Philips Street) is a fine example of High Victorian Gothic architecture and was designed by Benjamin Woolfield Mountfort in 1884. It has suffered some major damage during 6.3 quake that hit Christchurch 22 February 2011. From Psalm 23 (King James Version) The Lord is my shepherd; I shall not want. ...

Images, eqnz.chch.2010

For Best View Press"L" All 23 Arts Centre heritage buildings received significant damage in the earthquake and its subsequent aftershocks, and all have been issued with a red “Unsafe” placard. As a result of the magnitude of this damage, the Arts Centre Trust Board— the body charged with ensuring this iconic precinct is preserved and pr...

Images, eqnz.chch.2010

The unforgettable beauty of lavender Occurs in both the earth As well as part of the many changing Shades of the daily heavens on high. Is quickly there, and then is gone. Light violet, lavender, How unique is its special glow, Colored in nature in light lilac, Amethyst, and airy, purple indigo. From a poem by Gil Saenz

Images, eqnz.chch.2010

Manchester Courts, a seven-storey building on the corner of Hereford and Manchester Streets, is a category one historic place built in 1905-1906 that up until the 7.1 earthquake, housed offices. News of the scheduled demolition provoked an emotional response from the people of Christchurch. UPDATE 14 October 2010: A group of residents is campaig...

Images, eqnz.chch.2010

20160307_0012_1D3-32 Subway is closed (067/366) The Subway shop in the High Street Mall has not operated since lunch time on the 22nd February 2011 when the most damaging of Christchurch and Canterbury's earthquakes struck. I assume the building is still to be demolished. #7119

Images, eqnz.chch.2010

North Hagley Park, Christchurch, New Zealand. Tens of thousands turned out today to mark the one year anniversary of the devastating earthquake that struck the city at 12.51pm on 22 February, 2011. 185 people lost their lives. file.stuff.co.nz/stuff/12-51/ Took 4 pa...

Images, eqnz.chch.2010

Taken soon after the 6.3 magnatude quake hit Christchurch 22 February 2011. A friend tried to get home when the road opened up and her 4 wheel drive went down. We could not get it out! The grey liquefaction has stuck the other car fast. It took less than an hour to grow this thick.

Research papers, University of Canterbury Library

Severe liquefaction was repeatedly observed during the 2010 - 2011 C hristchurch earthquake s , particularly affecting deposits of fine sands and silty sands of recent fluvial or estuarine origin. The effects of liquefaction included major sliding of soil tow ard water bodies ( i.e. lateral spreading ) rang ing from centimetres to several metres. In this paper, a series of undrained cyclic torsional shear tests were conducted to evaluate the liquefaction and extremely large deformation properties of Christchurch b oiled sand . In these tests, the simple shear conditions were reproduced in order to apply realistic stress conditions that soil s experience in the field during horizontal seismic shaking. Several hollow cylindrical medium dense specimens ( D r = 50%) were pr epared by pluviation method, isotropically consolidated at an effective stress of 100 kPa and then cyclically sheared under undrained conditions up to 10 0% double amplitude shear strain (γ DA ) . The cyclic strength at different levels of γ DA of 7.5%, 15%, 3 0 % and 6 0%, development of extremely large post - liquefaction deformation and shear strain locali s ation properties were assessed from the analysis of the effective stress paths and stress - strain responses . To reveal possible distinctiveness, the cyclic undra ined behaviour of CHCH boiled sand was compared with that of Toyoura sand previously examined under similar testing conditions

Images, eqnz.chch.2010

20131228_6786_1D3-97 Twelve Days of Christmas (part 1) The NG building on Madras Street was given the go ahead to repair earthquake damage, which the owners did at some expense, Now, the government want this land to build a central city stadium, so there is a protest on the windows set to the Christmas song the Twelve Days of Christmas. 12 mi...

Images, eqnz.chch.2010

A local inspecting the damage to St Lukes Church after the 6.3 quake hit. For whom the bell tolls Time marches on For whom the bell tolls Take a look to the sky just before you die It's the last time you will Blackened roar, massive roar, fills the crumbling sky Shattered goal fills his soul with a ruthless cry Stranger now are his eyes to this...

Images, eqnz.chch.2010

The Christchurch Cathedral Square showing the Anglican Cathedral after loosing its tower and spire after the 6.3 quake hit Christchurch 22 February 2011. 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 off. This image was taken from a helicopter flight over the...

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

Sadly the Chapel has been badly damaged in the magnitude 6.3 earthquake that hit Christchurch 22 February 2011. See below. The Rose Historic Chapel formerly St Mary’s Convent Chapel is the sole survivor of a group of heritage buildings in Christchurch that once comprised the St Mary’s Convent complex for the Sisters of Mercy in North Colombo St...

Images, eqnz.chch.2010

Manchester Courts, a seven-storey building on the corner of Hereford and Manchester Streets, is a category one historic place built in 1905-1906 that up until the 7.1 earthquake, housed offices. News of the scheduled demolition provoked an emotional response from the people of Christchurch. UPDATE 14 October 2010: A group of residents is campaig...

Research papers, University of Canterbury Library

his poster presents the ongoing development of a 3D Canterbury seismic velocity model which will be used in physics-based hybrid broadband ground motion simulation of the 2010-2011 Canterbury earthquakes. Velocity models must sufficiently represent critical aspects of the crustal structure over multiple length scales which will influence the results of the simulations. As a result, numerous sources of data are utilized in order to provide adequate resolution where necessary. Figure 2: (a) Seismic reflection line showing P-wave velocities and significant geologic horizons (Barnes et al. 2011), and (b) Shear wave profiles at 10 locations (Stokoe et al. 2013). Figure 4: Cross sections of the current version of the Canterbury velocity model to depths of 10km as shown in Figure 1: (a) at a constant latitude value of -43.6˚, and (b) at a constant longitude value of 172.64˚. 3. Ground Surface and Geologic Horizon Models Figure 3: (a) Ground surface model derived from numerous available digital elevation models, and (b) Base of the Quaternary sediments derived from structural contours and seismic reflection line elevations. The Canterbury region has a unique and complex geology which likely has a significant impact on strong ground motions, in particular the deep and loose deposits of the Canterbury basin. The Canterbury basin has several implications on seismic wave phenomena such as long period ground motion amplification and wave guide effects. Using a realistic 3D seismic velocity model in physics-based ground motion simulation will implicitly account for such effects and the resultant simulated ground motions can be studied to gain a fundamental understanding of the salient ground motion phenomena which occurred during the Canterbury earthquakes, and the potential for repeat occurrences in the Canterbury region. Figure 1 shows the current model domain as a rectangular area between Lat=[-43.2˚,-44.0˚], and Lon=[171.5˚,173.0˚]. This essentially spans the area between the foot of the Southern Alps in the North West to Banks Peninsula in the East. Currently the model extends to a depth of 50km below sea level.

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.

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...