A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
A Case Study of Probabilistic Seismic Hazard Analysis Using Grid-Based Approach in Area Sources and Computation of Hazard Deaggregation
Probabilistic seismic hazard analysis (PSHA) is a used worldwide for obtaining the probability of a seismic event occurring at a given location. Although the methodology is very well-known, previous researches did not address the uncertainty in source-to-site distance for obtaining more precise and reliable estimates of seismic hazard. In this study, an effort has made by using 0.5º grid size in area sources and kernel density distribution to quantify the source-to-site distance uncertainty. An extension of PSHA, generally known as hazard deaggregation has also been performed to identify the relative contribution of earthquake magnitude to a hazard or intensity measure level. Silchar city of North-east India has been considered as a testbed, as the city is highly vulnerable to earthquakes due to tectonic features of its surrounding regions. This study has developed the seismic hazard curve and has obtained peak ground acceleration (PGA) level at design-based earthquake (DBE). The results are validated by comparing with the data from previous studies. The developed PSHA framework can be used by structural designers and decision makers for planning and designing of new projects as well as assessing seismic risk of built environment in a city.
A Case Study of Probabilistic Seismic Hazard Analysis Using Grid-Based Approach in Area Sources and Computation of Hazard Deaggregation
Probabilistic seismic hazard analysis (PSHA) is a used worldwide for obtaining the probability of a seismic event occurring at a given location. Although the methodology is very well-known, previous researches did not address the uncertainty in source-to-site distance for obtaining more precise and reliable estimates of seismic hazard. In this study, an effort has made by using 0.5º grid size in area sources and kernel density distribution to quantify the source-to-site distance uncertainty. An extension of PSHA, generally known as hazard deaggregation has also been performed to identify the relative contribution of earthquake magnitude to a hazard or intensity measure level. Silchar city of North-east India has been considered as a testbed, as the city is highly vulnerable to earthquakes due to tectonic features of its surrounding regions. This study has developed the seismic hazard curve and has obtained peak ground acceleration (PGA) level at design-based earthquake (DBE). The results are validated by comparing with the data from previous studies. The developed PSHA framework can be used by structural designers and decision makers for planning and designing of new projects as well as assessing seismic risk of built environment in a city.
A Case Study of Probabilistic Seismic Hazard Analysis Using Grid-Based Approach in Area Sources and Computation of Hazard Deaggregation
Structural Integrity
Fonseca de Oliveira Correia, José António (editor) / Choudhury, Satyabrata (editor) / Dutta, Subhrajit (editor) / Roy, Geetopriyo (author) / Choudhury, Satyabrata (author) / Dutta, Subhrajit (author)
International Conference on Advances in Structural Mechanics and Applications ; 2021 ; Silchar, India
Advances in Structural Mechanics and Applications ; Chapter: 32 ; 479-493
Structural Integrity ; 19
2022-06-08
15 pages
Article/Chapter (Book)
Electronic Resource
English
Salient Features of Seismic Hazard Deaggregation and Computation of Vector Hazard
| British Library Conference Proceedings | 2018
Regional seismic risk scenarios based on hazard deaggregation
| British Library Conference Proceedings | 2002
USGS National Seismic Hazard Maps: Uniform Hazard Spectra, Deaggregation and Uncertainty
| British Library Conference Proceedings | 1997
Deaggregation of probabilistic seismic hazard results for some selected cities in Western Mexico
| Taylor & Francis Verlag | 2024