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Compilation

Liquefaction potential of Rotorua soils

Liquefaction potential of Rotorua soils

The soils underlying much of central Rotorua include several metres of diatomaceous silts and pumiceous sands. The properties of these complex soils are often outside the ranges used to establish the current liquefaction criteria, and the assumptions and simplifications made in establishing these criteria may therefore be invalid…

An initial assessment of the effects of seismically induced ground deformation on the occurrence of localised instability following rainfall in the Port Hills, Christchurch

An initial assessment of the effects of seismically induced ground deformation on the occurrence of localised instability following rainfall in the Port Hills, Christchurch

Seismic activity during the 2010/2011 Canterbury Earthquake Sequence (CES) caused widespread damage to sloping ground in residential areas on the Port Hills in Christchurch. Much of the damage manifested as cracking and displacement of the ground surface. While actions were taken to repair some damage, it was largely…

Reliability of lateral stretch estimates in 2010-2011 Canterbury earthquakes

Reliability of lateral stretch estimates in 2010-2011 Canterbury earthquakes

Several methods are available in the literature to estimate the extent of liquefaction induced lateral spreading at a given site, the most commonly used being that of Zhang et al (2004). During the 2010-2011 sequence of earthquakes in Canterbury, lateral spreading occurred extensively across the…

Cyclic softening case study: Wendover Retirement Village, Christchurch

Cyclic softening case study: Wendover Retirement Village, Christchurch

Wendover Retirement Village is located in Papanui, Christchurch, adjacent to a minor tributary of Dudley Creek on the edge of a drained peat swamp. The site suffered damage as a result of the recent major seismic activity in Canterbury, including ground settlement and lateral spreading….