Search

found 670 results

Images for collapse; more images...

Images, eqnz.chch.2010

Parapet of this building collapsed during the magnitude 7.1 earthquake in Christchurch on Saturday 4-9-2010.

Images, eqnz.chch.2010

Facade and roof of this building collapsed during the magnitude 7.1 earthquake in Christchurch on Saturday 4-9-2010.

Images, eqnz.chch.2010

Parapet of this building collapsed during the magnitude 7.1 earthquake in Christchurch on Saturday 4-9-2010.

Images, eqnz.chch.2010

Parapet of this building collapsed during the magnitude 7.1 earthquake in Christchurch on Saturday 4-9-2010.

Images, eqnz.chch.2010

Parapet of this building collapsed during the magnitude 7.1 earthquake in Christchurch on Saturday 4-9-2010.

Images, UC QuakeStudies

Bricks have fallen from the walls of the former Princess Cinema in New Brighton, exposing the interior. The photographer comments, "Back of the old Princess Cinema in New Brighton after the earthquake in Christchurch, New Zealand on 22 February. In this picture you can see inside the old cinema curtains. This building has now been knocked down as it was so dangerous".

Images, eqnz.chch.2010

Roof and parapet of this building collapsed during the magnitude 7.1 earthquake in Christchurch on Saturday 4-9-2010.

Images, eqnz.chch.2010

Parapet and roof of this building collapsed during the magnitude 7.1 earthquake in Christchurch on Saturday 4-9-2010.

Images, eqnz.chch.2010

Parapet and roof of this building collapsed during the magnitude 7.1 earthquake in Christchurch on Saturday 4-9-2010.

Images, eqnz.chch.2010

Parapet and roof of this building collapsed during the magnitude 7.1 earthquake in Christchurch on Saturday 4-9-2010.

Images, eqnz.chch.2010

This 2 storey building has been condemned after its roof collapsed during the magnitude 7.1 earthquake in Christchurch on Saturday 4-9-2010.

Images, eqnz.chch.2010

This 2 storey building has been condemned after its roof collapsed during the magnitude 7.1 earthquake in Christchurch on Saturday 4-9-2010.

Images, eqnz.chch.2010

This 2 storey building has been condemned after its roof collapsed during the magnitude 7.1 earthquake in Christchurch on Saturday 4-9-2010.

Images, eqnz.chch.2010

Car damaged by the collapse of the building parapet following the magnitude 7.1 earthquake in Christchurch on Saturday 4-9-2010.

Images, eqnz.chch.2010

This 2 storey building has been condemned after its roof collapsed during the magnitude 7.1 earthquake in Christchurch on Saturday 4-9-2010.

Images, eqnz.chch.2010

The front and side walls of this Christchurch building had completely collapsed after being struck by the the magnitude 7,1 earthquake on 4 September 2010.

Images, UC QuakeStudies

Part of a stone wall left sticking out over the edge after the cliff below it collapsed. The photographer comments, "A viewing platform in Clifton has its foundations exposed after the cliff face collapsed".

Images, eqnz.chch.2010

The brick fence of this hostel along Bealey Ave collapsed in the magnitude 7.1 earthquake that struck Christchurch on Saturday 4 September 2010.

Images, eqnz.chch.2010

The kids in this house won't be getting presents from Santa this Christmas; collapsed chimney stack following the magnitude 7.1 earthquake in Christchurch on Saturday 4-9-2010.

Research papers, University of Canterbury Library

Predicting building collapse due to seismic motion is critical in design and more so after a major event. Damaged structures can appear sound, but collapse under following major events. There can thus be significant risk in decision making after a major seismic event concerning the safe occupation of a building or surrounding areas, versus the unknown impact of unknown major aftershocks. Model-based pushover analyses are effective if the structural properties are well understood, which is not valid post-event when this risk information is most useful. This research combines Hysteresis Loop Analysis (HLA) structural health monitoring (SHM) and Incremental Dynamic Analysis (IDA) methods to determine collapse capacity and probability of collapse for a specific structure, at any time, a range of earthquake excitations to ensure robustness. The nonlinear dynamic analysis method presented enables constant updating of building performance predictions using post-event SHM results. The resulting combined methods provide near real-time updating of collapse fragility curves as events progress, quantifying the change of collapse probability or seismic induced losses for decision-making - a novel, higher resolution risk analysis than previously available. The methods are not computationally expensive and there is no requirement for a validated numerical model. Results show significant potential benefits and a clear evolution of risk. They also show clear need for extending SHM toward creating improved predictive models for analysis of subsequent events, where the Christchurch series of 2010-2011 had significant post-event aftershocks after each main event. Finally, the overall method is generalisable to any typical engineering demand parameter.