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Author: Prasenjit Basu Publisher: Purdue University Press ISBN: 9781622600649 Category : Transportation Languages : en Pages : 112
Book Description
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: Prasenjit Basu Publisher: Purdue University Press ISBN: 9781622600649 Category : Transportation Languages : en Pages : 112
Book Description
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: Bengt Fellenius Publisher: Lulu.com ISBN: 1365824004 Category : Technology & Engineering Languages : en Pages : 488
Book Description
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: Canadian Geotechnical Society Publisher: Richmond, B.C. : Canadian Geotechnical Society ISBN: 9780920505090 Category : Foundations Languages : en Pages : 512
Author: Burt G. Look Publisher: CRC Press ISBN: 020394660X Category : Science Languages : en Pages : 356
Book Description
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: Michael Tomlinson Publisher: CRC Press ISBN: 0415385822 Category : Technology & Engineering Languages : en Pages : 14
Book Description
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 groups under compressive loading, piled foundations for resisting uplift and lateral loading and the structural design of piles and pile groups. Marine structures, miscellaneous problems (including machinery foundations, underpinning, mining subsidence areas, contracts and frozen ground), durability of piled foundations, ground investigations, and pile testing are also covered. It introduces the 2005 version of Eurocode7, BS 8004 and other codes, and refers to BS 6349 on maritime structures, and new forms of civil engineering contracts suitable for piling projects. It includes numerous worked examples to the codes, many based on actual problems. It also gives very comprehensive information for students.
Author: Wei Dong Guo Publisher: CRC Press ISBN: 0415809339 Category : Technology & Engineering Languages : en Pages : 579
Book Description
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. Coverage includes nonlinear response of single piles to vertical or torsional loading and to cyclic lateral loading, as well as prediction of nonlinear response of lateral pile groups, vertically loaded pile groups and the design of slope stabilising piles. Most solutions are provided as closed-form expressions. Theory and Practice of Pile Foundations is: illustrated with case studies accompanied by practical applications in Excel and MathCad the first book to incorporate nonlinear interaction into pile design. A valuable resource for students of geotechnical engineering taking courses in foundations and a vital tool for engineers designing pile foundations.
Author: Harry G. Poulos Publisher: CRC Press ISBN: 1351652141 Category : Technology & Engineering Languages : en Pages : 761
Book Description
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: Samuel G. Paikowsky Publisher: Transportation Research Board ISBN: 0309087961 Category : Bridges Languages : en Pages : 87
Book Description
Introduction and research approach -- Findings -- Interpretation, appraisal, and applications -- Conclusions and suggested research -- Bibliography -- Appendixes.
Author: US Army Corps of Engineers Publisher: ISBN: 9781410219459 Category : Technology & Engineering Languages : en Pages : 200
Book Description
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: Dr. Johannes Lehmann Publisher: Earthscan ISBN: 1849770557 Category : Business & Economics Languages : en Pages : 449
Book Description
"Biochar is the carbon-rich product when biomass (such as wood, manure, or crop residues) is heated in a closed container with little or no available air. It can be used to improve agriculture and the environment in several ways, and its stability in soil and superior nutrient-retention properties make it an ideal soil amendment to increase crop yields. In addition to this, biochar sequestration, in combination with sustainable biomass production, can be carbon-negative and therefore used to actively remove carbon dioxide from the atmosphere, with major implications for mitigation of climate change. Biochar production can also be combined with bioenergy production through the use of the gases that are given off in the pyrolysis process.This book is the first to synthesize the expanding research literature on this topic. The book's interdisciplinary approach, which covers engineering, environmental sciences, agricultural sciences, economics and policy, is a vital tool at this stage of biochar technology development. This comprehensive overview of current knowledge will be of interest to advanced students, researchers and professionals in a wide range of disciplines"--Provided by publisher.
Author: Prasenjit Basu
Author: Prasenjit Basu
Author: Bengt Fellenius
Author: Canadian Geotechnical Society
Author: Burt G. Look
Author: Michael Tomlinson
Author: Wei Dong Guo
Author: Harry G. Poulos
Author: Samuel G. Paikowsky
Author: US Army Corps of Engineers
Author: Dr. Johannes Lehmann