Model Uncertainties in Foundation Design is unique in the compilation of the largest and the most diverse load test databases to date, covering many foundation types (shallow foundations, spudcans, driven piles, drilled shafts, rock sockets and helical piles) and a wide range of ground conditions (soil to soft rock). All databases with names prefixed by NUS are available upon request. This book presents a comprehensive evaluation of the model factor mean (bias) and coefficient of variation (COV) for ultimate and serviceability limit state based on these databases. These statistics can be used directly for AASHTO LRFD calibration. Besides load test databases, performance databases for other geo-structures and their model factor statistics are provided. Based on this extensive literature survey, a practical three-tier scheme for classifying the model uncertainty of geo-structures according to the model factor mean and COV is proposed. This empirically grounded scheme can underpin the calibration of resistance factors as a function of the degree of understanding – a concept already adopted in the Canadian Highway Bridge Design Code and being considered for the new draft for Eurocode 7 Part 1 (EN 1997-1:202x). The helical pile research in Chapter 7 was recognised by the 2020 ASCE Norman Medal.
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For undergraduate/graduate-level foundation engineering courses. Covers the subject matter thoroughly and systematically, while being easy to read. Emphasizes a thorough understanding of concepts and terms before proceeding with analysis and...
That is , the inherent variability of soil properties , model uncertainty and construction variability are not modeled ... A more rational design method that evaluates the uncertainties for a pile group foundation is required .
Drawing on the expertise of contributors from a range of disciplines including geomechanics, optimization, and computational engineering, this book provides an interdisciplinary guide to this subject which is suitable for readers from a ...
The "Red Book" presents a background to conventional foundation analysis and design.
In Proceedings of the International Workshop on Foundation Design Codes and Soil Investigation in View of International Harmonization and Performance ... Characterization of model uncertainties for laterally loaded rigid drilled shafts.
3.2.4 Transformation model uncertainty Transformation model errors result from the fact that common geotechnical tests do not always provide applicable soil properties that are useful for design relationships (Phoon and Kulhawy 1999b).
The parameters describing the model uncertainty in these tests as well as the uncertainty due to a few ... The gravity structure base dimensions are the overriding considerations of the foundation design for given soil conditions .
In: Wood R, Dell R (eds) Operations research, computing and homeland defense, proceedings of the 12th INFORMS computing society conference, pp 28–49 6. Alla A, Hinze M, Kolvenbach P, Lass O, Ulbrich S (2019) A certified model reduction ...
Foundations and Earth Structures is written primarily for an undergraduate course in foundation analysis and design. It should also appeal to graduate students and practicing engineers. There are three primary...