sanjayjha - Publications List

Department of Civil and Environmental Engineering
Saitama University, Japan

ersanjaynp@gmail.com

Sanjay K Jha is a doctoral student of Geotechnical Engineering at Department of Civil and Environmental Engineering, Saitama University, Japan (from 2006 Oct). He has completed Master of Science in Geotechnical Engineering in 2004 and Bachelor's degree in Civil Engineering in 2001, both from Institute of Engineering, Pulchowk campus, Lalitpur, Nepal.

His area of interest is Geotechnical Engineering: Geotechnical earthquake engineering (Dynamic properties of soil, soil liquefaction), Soil testing, Numerical methods (FEM) in geotechnical engineering, Constitutive modeling, Reliability based analysis and design in geotechnics, Geospatial modeling, Analysis and design of foundations, dams, tunnels, retaining walls, slope stability and other static and dynamic problems.


Journal articles

2009	Sanjay K Jha, K Suzuki, C S Desai (2009) Modeling and uncertainty analysis of softening behavior of sand using disturbed state constitutive model Australian Geomechanics 44: 4. September Abstract: Notes:
	DOI Sanjay K Jha, K Suzuki (2009) Liquefaction potential index considering parameter uncertainties Engineering Geology 102: 1-2. 55-60 Abstract: Notes:
	DOI PMID Sanjay K Jha, K Suzuki (2009) Reliability analysis of soil liquefaction based on standard penetration test Computers and Geotechnics 36: 4. 589-596 Abstract: A review of probabilistic and deterministic liquefaction evaluation procedures reveals that there is a need for a comprehensive approach that accounts for different sources of uncertainty in liquefaction evaluations. For the same set of input parameters, different models provide different factors of safety and/or probabilities of liquefaction. To account for the different uncertainties, including both the model and measurement uncertainties, reliability analysis is necessary. This paper presents a review and comparative study of such reliability approaches that can be used to obtain the probability of liquefaction and the corresponding factor of safety. Using a simplified deterministic Seed method, this reliability analysis has been performed. The probability of liquefaction along with the corresponding factor of safety have been determined based on a first order second moment (FOSM) method, an advanced FOSM (Hasoferâ��Lind) reliability method, a point estimation method (PEM) and a Monte Carlo simulation (MCS) method. A combined method that uses both FOSM and PEM is presented and found to be simple and reliable for liquefaction analysis. Based on the FOSM reliability approach, the minimum safety factor value to be adopted for soil liquefaction analysis (depending on the variability of soil resistance, shear stress parameters and acceptable risk) has been studied and a new design safety factor based on a reliability approach is proposed. Notes:
Conference papers

2010	Sanjay K Jha (2010) Reliability analysis of infinite cohesionless slopes (under review) ASCE Geo-Institute GeoFlorida Abstract: Notes:
2009	Sanjay K Jha (2009) State dependent characteristics of Bagmati sand In: 17th International conference on soil mechanics and geotechnical engineering, Egypt Abstract: Notes:
2008	Sanjay K Jha, K Suzuki, M Oda (2008) Reliability based safety factor for liquefaction analysis In: Proceedings of 10th International summer symposium Japan Society of Civil Engineers (JSCE) Abstract: Notes:
2007	Sanjay K Jha, Sanjay K Karn (2007) Comparative study of constitutive modelling of drained behavior of sand In: International workshop on Constitutive modelling- Development, Implementation, Evaluation, and Application, Hongkong, China Edited by:J.-H. Yin, X.S. Li, A.T.Yeung, and C.S. Desai. Abstract: Notes:
	Sanjay K Jha (2007) Steady state deformation characteristics of Bagmati Sand In: 13th Asian Regional Conference on Soil Mechanics and Geotechnical Engineering Kolkata, India Abstract: Notes:

Journal articles

Conference papers