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Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Soil Liquefaction Potential of Kalyani Region, India
https://orcid.org/http://orcid.org/0000-0001-5031-3783
High-magnitude earthquakes can result in severe destruction in regions susceptible to liquefaction. To avoid such casualty, one needs to specify the liquefaction susceptibility of the area and suggest proper measures for construction designs. In the present work, the liquefaction potential of the Kalyani region is evaluated. Three moderate- to high-magnitude earthquake scenarios (Mw = 6.5, 7.0, and 7.5 and PGA = 0.143g, 0.170g, and 0.202g, respectively) are considered for the present analysis at the six selected borehole sites in the study region. Liquefaction potential in terms of the factor of safety (FoS) against liquefaction is evaluated using a field approach based on N values with the help of a simplified method commonly known as Seed and Idriss method. Further, an attempt is made to define the severity against liquefaction by drawing the liquefaction hazard map of the study area based on the liquefaction potential index (LPI) values. It is found from the results that, for the shallow depths, susceptibility towards liquefaction decreases as the magnitude of earthquake decreases. We also observed that the minimum difference in the FoS obtained for a 7.0 magnitude earthquake was found to be 40% greater than that for the 7.5 magnitude earthquake. The same result is valid for the LPI analysis; for 7.5 Mw, the LPI is very high and the susceptibility towards liquefaction is about 93%. For the 7.0 Mw, the LPI is high and the severity against liquefaction is between 58 and 93% probability, whereas for 6.5 Mw, the LPI is moderately high with less than 53% susceptibility towards liquefaction.
Soil Liquefaction Potential of Kalyani Region, India
https://orcid.org/http://orcid.org/0000-0001-5031-3783
High-magnitude earthquakes can result in severe destruction in regions susceptible to liquefaction. To avoid such casualty, one needs to specify the liquefaction susceptibility of the area and suggest proper measures for construction designs. In the present work, the liquefaction potential of the Kalyani region is evaluated. Three moderate- to high-magnitude earthquake scenarios (Mw = 6.5, 7.0, and 7.5 and PGA = 0.143g, 0.170g, and 0.202g, respectively) are considered for the present analysis at the six selected borehole sites in the study region. Liquefaction potential in terms of the factor of safety (FoS) against liquefaction is evaluated using a field approach based on N values with the help of a simplified method commonly known as Seed and Idriss method. Further, an attempt is made to define the severity against liquefaction by drawing the liquefaction hazard map of the study area based on the liquefaction potential index (LPI) values. It is found from the results that, for the shallow depths, susceptibility towards liquefaction decreases as the magnitude of earthquake decreases. We also observed that the minimum difference in the FoS obtained for a 7.0 magnitude earthquake was found to be 40% greater than that for the 7.5 magnitude earthquake. The same result is valid for the LPI analysis; for 7.5 Mw, the LPI is very high and the susceptibility towards liquefaction is about 93%. For the 7.0 Mw, the LPI is high and the severity against liquefaction is between 58 and 93% probability, whereas for 6.5 Mw, the LPI is moderately high with less than 53% susceptibility towards liquefaction.
Soil Liquefaction Potential of Kalyani Region, India
https://orcid.org/http://orcid.org/0000-0001-5031-3783
High-magnitude earthquakes can result in severe destruction in regions susceptible to liquefaction. To avoid such casualty, one needs to specify the liquefaction susceptibility of the area and suggest proper measures for construction designs. In the present work, the liquefaction potential of the Kalyani region is evaluated. Three moderate- to high-magnitude earthquake scenarios (Mw = 6.5, 7.0, and 7.5 and PGA = 0.143g, 0.170g, and 0.202g, respectively) are considered for the present analysis at the six selected borehole sites in the study region. Liquefaction potential in terms of the factor of safety (FoS) against liquefaction is evaluated using a field approach based on N values with the help of a simplified method commonly known as Seed and Idriss method. Further, an attempt is made to define the severity against liquefaction by drawing the liquefaction hazard map of the study area based on the liquefaction potential index (LPI) values. It is found from the results that, for the shallow depths, susceptibility towards liquefaction decreases as the magnitude of earthquake decreases. We also observed that the minimum difference in the FoS obtained for a 7.0 magnitude earthquake was found to be 40% greater than that for the 7.5 magnitude earthquake. The same result is valid for the LPI analysis; for 7.5 Mw, the LPI is very high and the susceptibility towards liquefaction is about 93%. For the 7.0 Mw, the LPI is high and the severity against liquefaction is between 58 and 93% probability, whereas for 6.5 Mw, the LPI is moderately high with less than 53% susceptibility towards liquefaction.
Soil Liquefaction Potential of Kalyani Region, India
Indian Geotech J
Kumar, Sajjan (Autor:in) / Muley, Pradeep (Autor:in) / Syed, N. M. (Autor:in)
Indian Geotechnical Journal ; 53 ; 139-153
01.02.2023
15 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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