Improving Agreement Between Static Method and Dynamic Formula for Driven Cast-in-place Piles in Wisconsin
Author | : James H. Long |
Publisher | : |
Total Pages | : 116 |
Release | : 2013 |
Genre | : Concrete piling |
ISBN | : |
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Author | : James H. Long |
Publisher | : |
Total Pages | : 116 |
Release | : 2013 |
Genre | : Concrete piling |
ISBN | : |
Author | : Chong Tang |
Publisher | : CRC Press |
Total Pages | : 497 |
Release | : 2021-03-17 |
Genre | : Technology & Engineering |
ISBN | : 0429655959 |
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.
Author | : Kok-Kwang Phoon |
Publisher | : CRC Press |
Total Pages | : 521 |
Release | : 2023-12-11 |
Genre | : Technology & Engineering |
ISBN | : 1003801250 |
Uncertainty, Modeling, and Decision Making in Geotechnics shows how uncertainty quantification and numerical modeling can complement each other to enhance decision-making in geotechnical practice, filling a critical gap in guiding practitioners to address uncertainties directly. The book helps practitioners acquire a working knowledge of geotechnical risk and reliability methods and guides them to use these methods wisely in conjunction with data and numerical modeling. In particular, it provides guidance on the selection of realistic statistics and a cost-effective, accessible method to address different design objectives, and for different problem settings, and illustrates the value of this to decision-making using realistic examples. Bringing together statistical characterization, reliability analysis, reliability-based design, probabilistic inverse analysis, and physical insights drawn from case studies, this reference guide from an international team of experts offers an excellent resource for state-of-the-practice uncertainty-informed geotechnical design for specialist practitioners and the research community.
Author | : Willis H. Thomas |
Publisher | : CRC Press |
Total Pages | : 566 |
Release | : 2007-12-06 |
Genre | : Technology & Engineering |
ISBN | : 0203964292 |
This international handbook is essential for geotechnical engineers and engineering geologists responsible for designing and constructing piled foundations. It explains general principles and practice and details current types of pile, piling equipment and methods. It includes calculations of the resistance of piles to compressive loads, pile group
Author | : Shamsher Prakash |
Publisher | : John Wiley & Sons |
Total Pages | : 768 |
Release | : 1991-01-16 |
Genre | : Technology & Engineering |
ISBN | : 9780471616535 |
This is a concise, systematic and complete treatment of the design and construction of pile foundations. Discusses pile behavior under various loadings and types of piles and their installation, including consideration of soil parameters. It provides step-by-step design procedures for piles subject to vertical loading and pullout, lateral, inclined and eccentric loads, or dynamic loads, and for piles in permafrost. Also describes load test procedures and their interpretation and buckling of long, slender piles with and without supported length. The closing chapter presents case histories of prediction and performance of piles and pile groups. Includes numerous solved problems.
Author | : Mohamad H. Hussein |
Publisher | : |
Total Pages | : 0 |
Release | : 2012 |
Genre | : Foundations |
ISBN | : 9780784412084 |
GSP 227 contains 51 papers on the use of full-scale testing to enhance the design of foundations presented in honor of Bengt H. Fellenius.
Author | : Aleksandar Sedmak Vesić |
Publisher | : Transportation Research Board |
Total Pages | : 68 |
Release | : 1977-01-01 |
Genre | : Foundations |
ISBN | : 9780309025447 |
Author | : Rodrigo Salgado |
Publisher | : |
Total Pages | : |
Release | : 2018-02 |
Genre | : |
ISBN | : 9781622604791 |
Driven piles are commonly used in foundation engineering. The most accurate measurement of pile capacity is achieved from measurements made during static load tests. Static load tests, however, may be too expensive for certain projects. In these cases, indirect estimates of the pile capacity can be made through dynamic measurements. These estimates can be performed either through pile driving formulae or through analytical methods, such as the Case method.Pile driving formulae, which relate the pile set per blow to the capacity of the pile, are frequently used to determine whether the pile has achieved its design capacity. However, existing formulae have numerous shortcomings. These formulae are based on empirical observations and lack scientific validation. This report details the development of more accurate and reliable pile driving formulae developed from advanced one-dimensional FE simulations. These formulae are derived for piles installed in five typical soil profiles: a floating pile in sand, an end¿bearing pile in sand, a floating pile in clay, an end¿bearing pile in clay and a pile crossing a normally consolidated clay layer and resting on a dense sand layer. The proposed driving formulae are validated through well-documented case histories of full-scale instrumented driven piles. The proposed formulae are more accurate and reliable on average than other existing methods for the case histories considered in this study.This report also discusses the development of a pile driving control system, a fully integrated system developed by Purdue that can be used to collect, process, and analyze data to estimate the capacities of piles using the Case method and the pile driving formulae developed at Purdue.