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Assessment of Liquefaction Potential of Alluvial Soil of Indo-Gangetic Interfluves, Northern India
In the present study seismic hazard assessment in terms of ground response analysis and liquefaction potential has been carried out for the Allahabad city, India. The study area is having threat to seismic damage due to Himalayan Frontal Thrust earthquake. Three sites under the study have been characterized by means of in-situ SPT and laboratory tests on representative and undisturbed samples. Three boreholes were drilled at three different locations and SPT blow counts (N) was recorded at 1.5m interval up to a depth of 30m. The liquefaction analysis has been carried out using method suggested by Seed and Idriss (1970). The peak ground acceleration (PGA) values obtained from the analysis were used for the computation of CSR and SPT values for evaluation of CRR. PGA obtained from the analysis ranges from 0.063 to 1.5g. The study revealed that the soil below 10m depth in Allahabad city is susceptible to liquefaction. The post liquefaction settlement analysis of Allahabad soil shows an average settlement of 20 to 70cm.
Assessment of Liquefaction Potential of Alluvial Soil of Indo-Gangetic Interfluves, Northern India
In the present study seismic hazard assessment in terms of ground response analysis and liquefaction potential has been carried out for the Allahabad city, India. The study area is having threat to seismic damage due to Himalayan Frontal Thrust earthquake. Three sites under the study have been characterized by means of in-situ SPT and laboratory tests on representative and undisturbed samples. Three boreholes were drilled at three different locations and SPT blow counts (N) was recorded at 1.5m interval up to a depth of 30m. The liquefaction analysis has been carried out using method suggested by Seed and Idriss (1970). The peak ground acceleration (PGA) values obtained from the analysis were used for the computation of CSR and SPT values for evaluation of CRR. PGA obtained from the analysis ranges from 0.063 to 1.5g. The study revealed that the soil below 10m depth in Allahabad city is susceptible to liquefaction. The post liquefaction settlement analysis of Allahabad soil shows an average settlement of 20 to 70cm.
Assessment of Liquefaction Potential of Alluvial Soil of Indo-Gangetic Interfluves, Northern India
Naik, S. P. (author) / Patra, N. R. (author) / Malik, J. N. (author)
GeoCongress 2012 ; 2012 ; Oakland, California, United States
GeoCongress 2012 ; 1859-1868
2012-03-29
Conference paper
Electronic Resource
English
Assessment of Liquefaction Potential of Alluvial Soil of Indo-Gangetic Interfluves, Northern India
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