A Method For Accounting For Pile Setup And Relaxation In Pile Design And Quality Assurance

Author : Prasenjit Basu,Rodrigo Salgado,Monica Prezzi
Publisher : Purdue University Press
Page : 112 pages
File Size : 43,6 Mb
Release : 2009-08-01
Category : Transportation
ISBN : 1622600649

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A Method for Accounting for Pile Setup and Relaxation in Pile Design and Quality Assurance by Prasenjit Basu,Rodrigo Salgado,Monica Prezzi Pdf

When piles are installed by jacking or driving, they cause substantial changes in the state of soil located near the pile. These changes result from the complex loading imposed on the soil by expansion of a cylindrical cavity to make room for the pile, by multiple cycles of shearing in the vertical direction as the pile gradually moves down into the ground, and by the slow drainage associated with clayey soils. If a pile is load-tested a short time after installation, it will develop an axial resistance that reflects the existence in the soil of the excess pore pressures caused by the installation process. After the excess pore pressures dissipate, the axial pile resistance will be different from that measured in the short term. This difference is referred to as pile setup (if the resistance increases) or relaxation (if the resistance drops). This report focuses on the pile setup observed in clayey soils, in which it can be quite significant. Pile setup in clays result primarily from shaft resistance gains with time after installation because the base resistance contributes proportionally much less in soft to medium stiff clays, which are the focus of the research. Accordingly, our focus has been on analyzing setup in shaft resistance, validating the equations resulting from these analyses and then proposing design and quality assurance procedures based on the results of the analyses.

Author : Rodrigo Salgado,Vibhav Bisht,Monica Prezzi
Publisher : Unknown
Page : 128 pages
File Size : 53,8 Mb
Release : 2018-02
Category : Electronic
ISBN : 1622604792

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Pile Driving Analysis for Pile Design and Quality Assurance by Rodrigo Salgado,Vibhav Bisht,Monica Prezzi Pdf

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.

Author : Bengt Fellenius
Publisher : Lulu.com
Page : 488 pages
File Size : 48,5 Mb
Release : 2017-03-17
Category : Technology & Engineering
ISBN : 9781365824005

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Basics of Foundation Design by Bengt Fellenius Pdf

The "Red Book" presents a background to conventional foundation analysis and design. The text is not intended to replace the much more comprehensive 'standard' textbooks, but rather to support and augment these in a few important areas, supplying methods applicable to practical cases handled daily by practising engineers and providing the basic soil mechanics background to those methods. It concentrates on the static design for stationary foundation conditions. Although the topic is far from exhaustively treated, it does intend to present most of the basic material needed for a practising engineer involved in routine geotechnical design, as well as provide the tools for an engineering student to approach and solve common geotechnical design problems.

Author : Wei Dong Guo
Publisher : CRC Press
Page : 576 pages
File Size : 54,7 Mb
Release : 2012-11-14
Category : Technology & Engineering
ISBN : 9780203125328

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Theory and Practice of Pile Foundations by Wei Dong Guo Pdf

Pile Foundations are an essential basis for many structures. It is vital that they be designed with the utmost reliability, because the cost of failure is potentially huge. Covering a whole range of design issues relating to pile design, this book presents economical and efficient design solutions and demonstrates them using real world examples. Co

Author : Burt G. Look
Publisher : CRC Press
Page : 356 pages
File Size : 50,9 Mb
Release : 2007-04-26
Category : Science
ISBN : 9780203946602

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Handbook of Geotechnical Investigation and Design Tables by Burt G. Look Pdf

This practical handbook of properties for soils and rock contains, in a concise tabular format, the key issues relevant to geotechnical investigations, assessments and designs in common practice. In addition, there are brief notes on the application of the tables. These data tables are compiled for experienced geotechnical professionals who require a reference document to access key information. There is an extensive database of correlations for different applications. The book should provide a useful bridge between soil and rock mechanics theory and its application to practical engineering solutions. The initial chapters deal with the planning of the geotechnical investigation, the classification of the soil and rock properties and some of the more used testing is then covered. Later chapters show the reliability and correlations that are used to convert that data in the interpretative and assessment phase of the project. The final chapters apply some of these concepts to geotechnical design. This book is intended primarily for practicing geotechnical engineers working in investigation, assessment and design, but should provide a useful supplement for postgraduate courses.

Author : Willis H. Thomas
Publisher : CRC Press
Page : 566 pages
File Size : 44,9 Mb
Release : 2007-12-06
Category : Technology & Engineering
ISBN : 9780203964293

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Pile Design and Construction Practice by Willis H. Thomas Pdf

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 : Harry G. Poulos
Publisher : CRC Press
Page : 1038 pages
File Size : 42,9 Mb
Release : 2017-07-20
Category : Technology & Engineering
ISBN : 9781351652148

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Tall Building Foundation Design by Harry G. Poulos Pdf

This book provides a comprehensive guide to the design of foundations for tall buildings. After a general review of the characteristics of tall buildings, various foundation options are discussed followed by the general principles of foundation design as applied to tall buildings. Considerable attention is paid to the methods of assessment of the geotechnical design parameters, as this is a critical component of the design process. A detailed treatment is then given to foundation design for various conditions, including ultimate stability, serviceability, ground movements, dynamic loadings and seismic loadings. Basement wall design is also addressed. The last part of the book deals with pile load testing and foundation performance measurement, and finally, the description of a number of case histories. A feature of the book is the emphasis it places on the various stages of foundation design: preliminary, detailed and final, and the presentation of a number of relevant methods of design associated with each stage.

Author : Anonim
Publisher : Unknown
Page : 1658 pages
File Size : 54,5 Mb
Release : 1988
Category : Petroleum
ISBN : STANFORD:36105007711794

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Petroleum Abstracts. Literature and Patents by Anonim Pdf

Author : Gopal Madabhushi
Publisher : CRC Press
Page : 328 pages
File Size : 45,8 Mb
Release : 2017-09-06
Category : Technology & Engineering
ISBN : 9781351988841

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Centrifuge Modelling for Civil Engineers by Gopal Madabhushi Pdf

Solve Complex Ground and Foundation Problems Presenting more than 25 years of teaching and working experience in a wide variety of centrifuge testing, the author of Centrifuge Modelling for Civil Engineers fills a need for information about this field. This text covers all aspects of centrifuge modelling. Expertly explaining the basic principles, the book makes this technique accessible to practicing engineers and researchers. Appeals to Non-Specialists and Specialists Alike Civil engineers that are new to the industry can refer to this material to solve complex geotechnical problems. The book outlines a generalized design process employed for civil engineering projects. It begins with the basics, and then moves on to increasingly complex methods and applications including shallow foundations, retaining walls, pile foundations, tunnelling beneath existing pile foundations, and assessing the stability of buildings and their foundations following earthquake-induced soil liquefaction. It addresses the use of modern imaging technique, data acquisition, and modelling techniques. It explains the necessary signal processing tools that are used to decipher centrifuge test data, and introduces the reader to the specialist aspects of dynamic centrifuge modelling used to study dynamic problems such as blast, wind, or wave loading with emphasis on earthquake engineering including soil liquefaction problems. Introduces the equipment and instrumentation used in centrifuge testing Presents in detail signal processing techniques such as smoothing and filtering Provides example centrifuge data that can be used for sample analysis and interpretation Centrifuge Modelling for Civil Engineers effectively describes the equipment, instrumentation, and signal processing techniques required to make the best use of the centrifuge modelling and test data. This text benefits graduate students, researchers, and practicing civil engineers involved with geotechnical issues.

Author : US Army Corps of Engineers
Publisher : Unknown
Page : 200 pages
File Size : 54,8 Mb
Release : 2005-01-01
Category : Technology & Engineering
ISBN : 1410219453

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Design of Pile Foundations by US Army Corps of Engineers Pdf

This manual provides information, foundation exploration and testing procedures, load test methods, analysis techniques, allowable criteria, design procedures, and construction consideration for the selection, design, and installation of pile foundations. The guidance is based on the present state of the technology for pile-soil-structure-foundation interaction behavior. This manual provides design guidance intended specifically for the geotechnical and structural engineer but also provides essential information for others interested in pile foundations such as the construction engineer in understanding construction techniques related to pile behavior during installation. Since the understanding of the physical causes of pile foundation behavior is actively expanding by better definition through ongoing research, prototype, model pile, and pile group testing and development of more refined analytical models, this manual is intended to provide examples and procedures of what has been proven successful. This is not the last nor final word on the state of the art for this technology. We expect, as further practical design and installation procedures are developed from the expansion of this technology, that these updates will be issued as changes to this manual.

Author : Geotechnik
Publisher : John Wiley & Sons
Page : 496 pages
File Size : 54,9 Mb
Release : 2013-12-09
Category : Technology & Engineering
ISBN : 9783433604137

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Recommendations on Piling (EA Pfähle) by Geotechnik Pdf

This handbook provides a complete and detailed overview of piling systems and their application. The design and construction of piled foundations is based on Eurocode 7 and DIN 1054 edition 2010 as well as the European construction codes DIN EN 1536 (Bored piles), DIN EN 12699 (Displacement piles) and DIN EN 14199 (Micropiles). These recommendations also deal with - categorisation of piling systems, - actions on piles from structural loading, negative skin friction and side pressure, - pile resistances from static and dynamic pile test loading as well as extensive tables with the pile load-bearing capacity of nearly all piling systems based on values from practical experience, - pile groups, - performance of static and dynamic test loading and integrity tests, - load-bearing behaviour and verifications for piles under cyclical, dynamic and impact actions - quality assurance for construction. An appendix with numerous calculation examples completes the work. As part of the approval procedure for offshore wind energy structures, the Federal Office for Shipping and Hydrography (BSH) demands verifications according to the new Chapter 13 ("Load-bearing behaviour and verifications for piles under cyclical, dynamical and impact actions") of the EA Pfähle (the recommendations of the Piling working group - 2nd edition), which deals with external pile resistance for the foundations of offshore wind energy structures and the types of verifications to be provided under cyclical actions. The publication of the EA-Pfähle recommendations by the Piling working group of the German Society for Geotechnics (DGGT), which works with the same members as the piling standards committee NA 00-05-07, is intended to provide assistance for engineers active in the design, calculation and construction of piled foundations. The recommendations can thus be considered as rules of the technology and as a supplement to the available codes and standards.

Author : Renato Lancellotta
Publisher : CRC Press
Page : 520 pages
File Size : 47,6 Mb
Release : 2008-07-22
Category : Technology & Engineering
ISBN : 9781482265934

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Geotechnical Engineering by Renato Lancellotta Pdf

Established as a standard textbook for students of geotechnical engineering, this second edition of Geotechnical Engineering provides a solid grounding in the mechanics of soils and soil-structure interaction.Renato Lancellotta gives a clear presentation of the fundamental principles of soil mechanics and demonstrates how these principles are

Author : Samuel G. Paikowsky,National Cooperative Highway Research Program
Publisher : Transportation Research Board
Page : 87 pages
File Size : 51,7 Mb
Release : 2004
Category : Bridges
ISBN : 9780309087964

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Load and Resistance Factor Design (LRFD) for Deep Foundations by Samuel G. Paikowsky,National Cooperative Highway Research Program Pdf

Introduction and research approach -- Findings -- Interpretation, appraisal, and applications -- Conclusions and suggested research -- Bibliography -- Appendixes.

Author : Donald P. Coduto
Publisher : Unknown
Page : 888 pages
File Size : 40,8 Mb
Release : 2013-11-01
Category : Foundations
ISBN : 1292042885

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Foundation Design: Pearson New International Edition by Donald P. Coduto Pdf

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 design, and carefully integrates the principles of foundation engineering with their application to practical design problems.

Author : F. De Cock,C. Legrand
Publisher : CRC Press
Page : 528 pages
File Size : 50,8 Mb
Release : 2020-12-18
Category : Technology & Engineering
ISBN : 9781000150797

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Design of Axially Loaded Piles - European Practice by F. De Cock,C. Legrand Pdf

This book is unique on the subject because it is not so much a collection of individual work, but basically comprising national reports from most European countries on the present-day design methods, as prescribed in more or less strict national codes or recommendations and so daily used in practice by consulting engineers and contractors. As far as already implemented, the application of these methods within the framework of Eurocode 7 is described as well. In order to improve the understanding of the design methods, the national papers also consider aspects such as the local piling practice, limitations of the design methods, some practical examples and particular national experiences. The proceedings also include the contributions of two invited speakers as well as those of the three session discussion leaders, focusing on some particular aspects with regards to pile design. The book is of particular interest for those who are involved with pile design in practice, consulting engineers, piling contractors, control organisms as well as those dealing with geotechnical normalisation and research work.