CTV Building Collapse - NLTHA Report - Christchurch Earthquake 2011

[jamesmakeez]

CTV Building - Non-Linear Seismic Analysis Report

• Author(s): Compusoft Engineering
  
• Published By: Canterbury Earthquakes Royal Commission
  
• Published Year: February 2012
  
• Abstract:
  Compusoft Engineering Limited was engaged by StructureSmith Ltd to undertake a non-linear seismic analysis of the CTV building which collapsed as a consequence of the 22nd February 2011 Lyttelton aftershock. It is the intent that the analyses outlined within this report further enhance the understanding of the CTV performance during the 4th September 2010 Darfield earthquake, and the February 2011 Lyttelton aftershock.
  The non-linear analyses outlined in this report are intended to;
  • Assist with the identification of the probable sequence of failure.
  • Report displacement and storey drift demands, identifying the onset and progression of damage throughout the structure.
  • Monitor seismic demands on critical structural elements.
  • Determine whether column hinging is expected, and if so, to what extent.
  • Investigate the significance and effect of vertical accelerations on the performance of the structure.
  • Investigate the variances in structural form i.e. the contribution of the masonry infill panels, and precast spandrel panels to the seismic response and performance of the structure.
  The models used for all analyses have been based on building geometry, record structural drawings [1], material tests [2], along with published guidance on the hysteretic behaviour of detailing present within the CTV building.
  

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