Reliability Analysis of Liquefaction for Some Regions of Bihar

Sujeet Kumar Umar, Pijush Samui and Sunita Kumari
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Sujeet Kumar Umar: Department of Civil Engineering, National Institute of Technology, Patna, India
Pijush Samui: Department of Civil Engineering, National Institute of Technology, Patna, India
Sunita Kumari: Department of Civil Engineering, National Institute of Technology, Patna, India

International Journal of Geotechnical Earthquake Engineering (IJGEE), 2018, vol. 9, issue 2, 23-37

Abstract: There are many deterministic and probabilistic liquefaction assessment measures to classify if soil liquefaction will take place or not. Different approaches give dissimilar safety factor and liquefaction probabilities. So, reliability analysis is required to deal with these different uncertainties. This paper describes a reliability technique for predicting the seismic liquefaction potential of soils of some areas at Bihar State. Here a reliability approach has been presented in order to find the probability of liquefaction. The proposed approach is formulated on the basis of the results of reliability analyses of 234 field data. Using a deterministic simplified Idriss and Boulanger method, factor of safety of soil has been accessed. The reliability index as well as corresponding probability of liquefaction has been determined based on a First Order Second Moment (FOSM) method. The developed method can be used as a robust tool for engineers concerned in the estimation of liquefaction potential.

Date: 2018
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