A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Identifying Seismic Vulnerability Factors for Wastewater Pipelines after the Canterbury (NZ) Earthquake Sequence 2010–2011
The 2010 and 2011 Canterbury earthquake sequence left Christchurch City’s wastewater network severely damaged. This study undertakes an investigation into the performance of buried wastewater pipes after the Canterbury earthquakes adopting and integrating two different approaches, namely: 1) a statistical analysis of the repairs undertook by the pipes; 2) the classification of the observed vulnerabilities after field inspections. The aim is to assess how physical factors, including geometrical and constructive characteristics of pipes, along with the sustained seismic permanent ground deformation, have all contributed to the pipes’ seismic performance. A database combining pipe physical factors, along with ground deformation measures, and repair rates (defined as number of repairs per km) was created and analyzed through statistical analysis, regressing repair rates against ground deformation respect to the physical factors. Then, the main factors identified via field visual inspections, are summarized. Finally the outputs from the two different approaches were comparatively discussed in the paper. The possibility to use the findings from this paper for the preliminary seismic vulnerability evaluation (e.g. screening and relative ranking) of buried wastewater pipelines is finally discussed in the paper.
Identifying Seismic Vulnerability Factors for Wastewater Pipelines after the Canterbury (NZ) Earthquake Sequence 2010–2011
The 2010 and 2011 Canterbury earthquake sequence left Christchurch City’s wastewater network severely damaged. This study undertakes an investigation into the performance of buried wastewater pipes after the Canterbury earthquakes adopting and integrating two different approaches, namely: 1) a statistical analysis of the repairs undertook by the pipes; 2) the classification of the observed vulnerabilities after field inspections. The aim is to assess how physical factors, including geometrical and constructive characteristics of pipes, along with the sustained seismic permanent ground deformation, have all contributed to the pipes’ seismic performance. A database combining pipe physical factors, along with ground deformation measures, and repair rates (defined as number of repairs per km) was created and analyzed through statistical analysis, regressing repair rates against ground deformation respect to the physical factors. Then, the main factors identified via field visual inspections, are summarized. Finally the outputs from the two different approaches were comparatively discussed in the paper. The possibility to use the findings from this paper for the preliminary seismic vulnerability evaluation (e.g. screening and relative ranking) of buried wastewater pipelines is finally discussed in the paper.
Identifying Seismic Vulnerability Factors for Wastewater Pipelines after the Canterbury (NZ) Earthquake Sequence 2010–2011
Giovinazzi, S. (author) / Black, J. R. (author) / Milke, M. (author) / Esposito, S. (author) / Brooks, K. A. (author) / Craigie, E. K. (author) / Liu, M. (author)
Pipelines 2015 ; 2015 ; Baltimore, Maryland
Pipelines 2015 ; 304-315
2015-08-17
Conference paper
Electronic Resource
English
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Seismic Performance of Improved Ground Sites during the 2010-2011 Canterbury Earthquake Sequence
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