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Reliability and Risk Analysis in Geotechnical and Geoenvironmental Engineering

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Abstract

Properties of geological materials vary significantly both spatially and temporally. Geotechnical design and practice are influenced by variations in properties and proper consideration of loads on geotechnical systems, and resistance provided by the geological systems represented by engineering properties, which are random variables/fields, is necessary. Significant developments exist in the consideration of the variability of loads and resistances, and the reliability-based design of geotechnical systems has developed very well. The objective of the paper is to present some work done by the author and his students in this area, with reference to foundations, retaining walls, slopes, dams, landslides, pavements, buried pipes, tunnels, landfill engineering, and contaminant transport in geological media. It is emphasized that probabilistic considerations play a significant role in understanding the role of uncertainties in design and provide a rational and risk-informed approach for the analysis and design of geotechnical and environmental systems. A few perceived benefits of rational design and analysis are demonstrated in this paper.

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Acknowledgements

I wish to thank the Indian Geotechnical Society (IGS), New Delhi, for bestowing the honor of Society’s 45th Annual lecture and IGS Roorkee Chapter for providing the facilities to give the lecture during the Indian Geotechnical Conference at Roorkee. I wish to remember Prof. M. E. Harr of Purdue University, West Lafeyette, Indiana, USA, for introducing me to the need for probabilistic thinking and analysis in geotechnical engineering during our discussions in 1996 while I was a visiting scholar at Purdue and was associated with Late Prof. G A Leonards, a strong supporter of IGS. I thank the Indian Institute of Science, Bangalore, for providing an excellent eco system for nurturing the research and efficient support system. I wish to thank my past and present colleagues in the Department of Civil Engineering and Centre for Sustainable Technologies for the support and valuable discussions. The work presented is based on the excellent work done in the area by my past and present students, Dr. Seshagiri Rao R, Prof. D S N Murty, Prof. A K Vasudevan, Prof. Sumanta Haldar, Prof. Munwar Basha, Prof. Vikas Pratap Singh, Prof. Amit Srivatsava, Dr. Sandeep K Chouskey, Dr. M D Deepthi, Dr. P Lakshmikanthan, Dr. Lekshmi Jaidev Nair, Dr. L G Santhosh, Dr. Pinom Ering, Dr. K Geetha Manjari, Prof. P Sughosh, Dr. Bharadwaj Pandit, Dr. Himansu Rana, Dr. K M Nazeeh, Dr. Shubham Arun Kalore, Sougata Mukherjee, Rakshanda Showkat, Prathima. P, Kalyani K, N. Anusree, and Prince Kumar. Thanks are due to M D Mukesh, Dr. Awdesh Kumar, Dr. Parameswaran, Dr. Rajarshi Pramanik, S Sujitha, Dr. Asha Nair and many others who were associated with me in research projects. The work received financial support from many funding agencies such as Council of Scientific & Industrial Research, (CSIR), Department of Science and Technology (DST), Ministry of Road Transport and Highways, Board of Research in Nuclear Sciences Government of India (BRNS), Public Works Department of Arunachal Pradesh, Ministry of Power, Science and Engineering Research Board (IMPRINT and NPDF schemes), and many others. I wish to specially thank Dr. Shubham Arun Kalore, Dr. Geetha Manjari, Dr. M D Deepthi and Prof. Munwar Basha for help in review and preparation of the manuscript. I thank Smt. K. Himabindu, my wife, children Deepti and Vennela for providing a wonderful atmosphere of happiness and joy at home which significantly contributed to my progress.

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    G. L. Sivakumar Babu

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Sivakumar Babu, G.L. Reliability and Risk Analysis in Geotechnical and Geoenvironmental Engineering. Indian Geotech J (2024). https://doi.org/10.1007/s40098-024-00909-6

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