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Chong Tang, Kok-Kwang Phoon - Model Uncertainties in Foundation Design, Häftad

Häftad, Engelska, 2022

Model Uncertainties in Foundation Design

Av Chong Tang, Kok-Kwang Phoon

Del i serien Challenges in Geotechnical and Rock Engineering

1342 kr

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Beskrivning
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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Chong Tang is Senior Research Fellow in the Department of Civil and Environmental Engineering at the National University of Singapore.Kok-Kwang Phoon is Distinguished Professor and Senior Vice Provost for Academic Affairs at the National University of Singapore.

Recensioner i media

"The book is written in a manner that is free of jargon and thus removes the mysticism that has dissuaded many practicing engineers to move from classical deterministic treatments of foundation design to a more robust appreciation of margins of safety that considers unavoidable uncertainty in the choice of model geotechnical input parameters and model accuracy."-- Richard J. Bathurst, in Probabilistic Engineering Mechanics"Nowhere else has such a vast compilation of foundation design models and databases been systematically organized and presented. ... The book can serve as a good resource for graduate (advanced) level foundation design classes".-- Naresh C. Samtani in DFI Journal"The authors are also to be complimented with explaining the fundamentals of foundation design and the related uncertainties in the first chapters, making the book accessible experts and relative novices in the field alike."-- Timo Schweckendiek in Georisk"A valuable complement to classical textbooks of foundation engineering."-- Chang-Yu Ou in Journal of GeoEngineering"…successfully fills the existing gap of model uncertainty quantification in the roster of milestone textbooks."-- Marco Uzielli in Rivista Italiana di Geotecnica"It provides an insightful discussion on the role of data in the evolution of geotechnical design and situates this discussion within the larger picture of the future of the economy where data is seen as the 'new oil'."-- Jianye Ching in Structural Safety"we recommend highly this book to geotechnical practitioners, code developers, researchers and research students in foundation engineering."-- Jian Chu and Xiaohui Qi in Acta Geotechnica

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