Local Govt | National News Video | Parliament Headlines | Politics Headlines | Search

 

TRex heading to New Zealand to test Christchurch’s soils

TRex heading to New Zealand to test Christchurch’s soils

February 7, 2013

The world’s largest seismic vibration truck called TRex is on its way to New Zealand to test Christchurch’s ground.

In a collaborative research project between the University of Canterbury (UC) and University of Texas, Austin, the 29,000kg truck will arrive in Christchurch next month to carry out tests. It will be the first time that it has been operated outside of the USA.

TRex will be used to determine the properties of soils from the ground surface to depths of 250 metres by applying small vibrations and recording them with an array of instruments.

UC earthquake engineer Dr Brendon Bradley said an understanding of Christchurch’s soil properties at great depths was important because it impacted how seismic waves were amplified, reflected, and refracted as they travelled up to the earth’s surface.

``The ground motion recorded in the February 11 2011 earthquake illustrated significant basin-effects. These were caused by reverberations of the soft sedimentary soils that Christchurch is founded on.

``Using state of the art information on soil properties throughout Christchurch obtained by TRex and previous testing we can begin to link cause and effect and better understand where such effects will occur elsewhere during future earthquakes worldwide,’’ Dr Bradley said.

UC’s Professor Misko Cubrinovski said that TRex would provide invaluable data on the seismic properties of soils and their liquefaction resistance.

``This is one of the several major collaborative projects on the Canterbury earthquakes between New Zealand and US researchers, which are supported by the National Science Foundation in the US, EQC and the Natural Hazards Research Platform.

The testing will begin on March 11 at 15 sites around Christchurch under the auspices of the Canterbury Earthquake Recovery Authority and the Christchurch City Council. The public are invited to witness the testing during two days at QEII Park on March 14 and at Ilam Fields on March 21. TRex will also make an appearance at the opening of UC’s Quake Centre on March 21.

Dr Brady Cox, one of several University of Texas people who will travel to New Zealand, said the vibrations produced by the truck would be imperceptible beyond 15 metres.

ENDS

© Scoop Media

 
 
 
 
 
Parliament Headlines | Politics Headlines | Regional Headlines

Gordon Campbell: On The Fallout From The Barclay Tape

This is hardly a case of cleaning out your desk and being turfed out onto the pavement.

As others have pointed out, the disgraced Clutha-Southland MP will remain on the public payroll for three months until the election, and for three months afterwards. More>>

 

Ombudsman: Canterbury Schools Reorganisation Mishandled

An investigation into the Canterbury schools reorganisation after the February 2011 earthquakes has found significant gaps and flaws in the Ministry’s engagement and communications with schools and communities. More>>

ALSO:

Law Commission: Contempt Report "Protects Right To Fair Trial"

The proposed Act limits what news media representatives and bloggers can report on court proceedings, but it also makes clearer than the current law where the line is between contempt and freedom of expression. More>>

ALSO:

Gordon Campbell: On Our Refugee Intake (And Uber’s Woes)

On figures released this week, there are currently 65.6 million people worldwide who have been displaced from their homes by war, famine or other external causes… More>>

ALSO:

IGIS Report: GCSB Support For Groser WTO Bid Not Illegal

“The inquiry has found that the GCSB did not act unlawfully or improperly in providing assistance to the New Zealand government campaign”, Ms Gwyn said. More>>

ALSO:

PM's Press Conference: Pike And Houses

There were questions on Pike River mine re-entry after new video from inside the drift was released over the weekend. English maintained a human effort would not be feasible irrespective of any future coalition demands from NZ First. He said the government would continue to work with families on non-manned re-entry. More>>

ALSO:

Flogging A Dead Horse: NZ First Seeks New s59 Referendum

10 years on from the so called “anti-smacking” law - NZ First calls for a binding referendum. NZ First MP Tracey Martin told TVNZ’s Q+A programme that the law change has had a “chilling effect” on NZ parents including herself. More>>

ALSO:

Always Interesting: Internet Party Has New Leader

The Internet Party has a new leader: Suzie Dawson... She currently resides in Moscow, Russia, where she has applied for temporary asylum due to severe persecution she reports being subjected to by those whose corruption she worked to expose.More>>

 
 
 
 
 

LATEST HEADLINES

  • PARLIAMENT
  • POLITICS
  • REGIONAL
 
 

Featured InfoPages

Opening the Election
 
 
 
  • PublicAddress
  • Pundit
  • Kiwiblog