Modeling Pile Setup For Closed Ended Pipe Piles Driven In Cohesive Soils
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Modeling Pile Setup For Closed Ended Pipe Piles Driven In Cohesive Soils
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Author : Saeed Alzahrani
language : en
Publisher:
Release Date : 2023
Modeling Pile Setup For Closed Ended Pipe Piles Driven In Cohesive Soils written by Saeed Alzahrani and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2023 with categories.
This research study focuses on modeling pile setup for closed-ended pipe piles (CEP) driven in cohesive soils. Pile setup can be defined as an increase in pile resistance over time after installation due to an increase in soil resistance. Pile setup was rarely considered in the Ohio Department of Transportation, ODOT, standard driven pile design procedures. If significant pile driving losses occur during pile installation, either pile driving is halted for a short period of time to determine whether pile setup will occur, or pile length is increased to achieve the required ultimate bearing value. This would negatively affect not only the piling and projects costs, but also the project schedule. Thus, incorporating pile setup into the design stage can lead to saving in pile quantity and avoid construction delays, as well as help to avoid change orders. In order to better predict pile driving losses during design stage, this research project aimed to develop more reliable pile setup models. To fulfill the objectives of this research, a database was established to collect data from existing projects in the State of Ohio. In addition, several field projects were selected to investigate the pile setup phenomenon. Comprehensive statistical analyses were conducted to investigate the mechanism of pile setup. Effect of the construction activities on the resistance of adjacent piles was also investigated by performing dynamic and static load tests on CEP piles driven in a fine-grained soil profile. The cone penetration tests (CPT) were performed at three locations at the project sites to gain more knowledge of the soil layers. Data obtained from piezometer measurements showed an increase in water pressure at the site during pile driving, which in turn reduced the effective soil strength. This investigation revealed that pile driving and restrikes should be scheduled such that the effect of construction activities on load tests results will be avoided or minimized. This could be implemented by conducting the dynamic load test on the first pile driven at a site and avoiding any construction activities until after the time of the restrike. The effect of construction activities on the resistances of adjacent piles was observed at distances of seven times the pile diameter. The results also indicated that silty clay soil exhibits higher setup than other soil types encountered at the project site. Side and tip resistances obtained from the static load tests were compared with estimates made using well-known CPT-based pile design methods. Overall, these methods achieved satisfactory predictions of the side and tip resistances with some exceptions. Multiple variable regression analyses performed by using the dataset compiled showed that the resistance mobilized at the end of pile installation, time passed after the installation, pile shaft surface area, and average silt content along the pile length are the most influential parameters in predicting the total pile resistance of driven piles. Multiple regression analyses were also carried out by using the collected database of side resistance demonstrated that initial side resistance, time passed since installation, soil volume displaced, clay and water contents along the pile length are the significant variables on predicting pile side resistance. New models for total and side resistances were developed to predict pile setup for CEP piles driven in fine-grained soils using gene expression programming (GEP). The results showed that the proposed models of pile total and side resistances can predict pile setup quite well. An attempt to evaluate the setup, for both total and side resistances, with time using the database has been made. The total and side setup ratios were also analyzed based on various restrike times. Since the database contains piles with multiple restrikes, another analysis was carried out to evaluate the ultimate total and side setup ratios. One of the main goals of this research was to evaluate pile side setup for individual layers using the unit side resistance with the aid of available dynamic load test data. Effect of soil properties on setup ratios for individual soil layers was also investigated. The results revealed that the recommended setup factor for the pile total and side setup ratios of 2.0 and 3.0, respectively, would cover almost all the piles' long term behavior. The results also showed that side friction setup factors for the piles driven in fine-grained Ohio soils are about 50 to 100% more than the factors currently recommended in the ODOT Bridge Design Manual.
Pile Design And Construction Practice
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Author : Willis H. Thomas
language : en
Publisher: CRC Press
Release Date : 2007-12-06
Pile Design And Construction Practice written by Willis H. Thomas and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2007-12-06 with Technology & Engineering categories.
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
Geotechnical Engineering
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Author : Ruwan Rajapakse
language : en
Publisher:
Release Date : 2004
Geotechnical Engineering written by Ruwan Rajapakse and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2004 with Technology & Engineering categories.
"The main objective of this book is to provide a comprehensive pile design and construction guide to practising geotechnical engineers. The book does not require any special technical knowledge other than basic mathematical skills. The first portion deals with construction aspects of piling. In this section, pile types, pile hammers, piling techniques, problems associated with piling work and cost considerations are discussed. Second portion of the book is devoted to pile design. Pile design in different soil conditions, pile groups, pile settlement, Bitumen coated pile design and lateral loading analysis were some of the subjects discussed. Almost all the chapters in the design section contain design examples. Design examples are provided to complement the theory and the designer should not follow the examples blindly during the design process"--Bookjacket
Effect Of Pile Installation Method On Pipe Pile Behavior In Sands
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Author : K. Paik
language : en
Publisher:
Release Date : 2004
Effect Of Pile Installation Method On Pipe Pile Behavior In Sands written by K. Paik and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2004 with Bearing capacity categories.
Open-ended pipe piles are often used for the foundations of both land and offshore structures because of their relatively low driving resistance. In this study, calibration chamber tests were conducted on model pipe piles installed in sands with different soil conditions in order to investigate the effects of the pile installation method on penetration parameters and bearing capacity. Results of the test program showed that both the hammer blow count necessary to install the piles and the incremental filling ratio (IFR), which is used to indicate the degree of soil plugging in open-ended piles, decreased (1) with increasing hammer weight for the same driving energy, and (2) with increasing hammer weight at the same fall height. The base and shaft load capacities of the piles were observed to increase (1) with increasing hammer weight for the same driving energy, and (2) with increasing hammer weight for the same fall height. It was also observed that the noise level observed during pile driving decreases (1) as the driving energy decreases and (2) as the hammer weight increases for the same driving energy. Model jacked piles were also installed and tested. The jacked piles were found to have higher bearing capacities than identical driven piles under similar conditions, mostly due to the more effective development of soil plugging in jacking than in driving.
Numerical Methods In Geotechnical Engineering Ix
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Author : António S. Cardoso
language : en
Publisher: CRC Press
Release Date : 2018-06-19
Numerical Methods In Geotechnical Engineering Ix written by António S. Cardoso and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-06-19 with Technology & Engineering categories.
Numerical Methods in Geotechnical Engineering IX contains 204 technical and scientific papers presented at the 9th European Conference on Numerical Methods in Geotechnical Engineering (NUMGE2018, Porto, Portugal, 25—27 June 2018). The papers cover a wide range of topics in the field of computational geotechnics, providing an overview of recent developments on scientific achievements, innovations and engineering applications related to or employing numerical methods. They deal with subjects from emerging research to engineering practice, and are grouped under the following themes: Constitutive modelling and numerical implementation Finite element, discrete element and other numerical methods. Coupling of diverse methods Reliability and probability analysis Large deformation – large strain analysis Artificial intelligence and neural networks Ground flow, thermal and coupled analysis Earthquake engineering, soil dynamics and soil-structure interactions Rock mechanics Application of numerical methods in the context of the Eurocodes Shallow and deep foundations Slopes and cuts Supported excavations and retaining walls Embankments and dams Tunnels and caverns (and pipelines) Ground improvement and reinforcement Offshore geotechnical engineering Propagation of vibrations Following the objectives of previous eight thematic conferences, (1986 Stuttgart, Germany; 1990 Santander, Spain; 1994 Manchester, United Kingdom; 1998 Udine, Italy; 2002 Paris, France; 2006 Graz, Austria; 2010 Trondheim, Norway; 2014 Delft, The Netherlands), Numerical Methods in Geotechnical Engineering IX updates the state-of-the-art regarding the application of numerical methods in geotechnics, both in a scientific perspective and in what concerns its application for solving practical boundary value problems. The book will be much of interest to engineers, academics and professionals involved or interested in Geotechnical Engineering.
Numerical Methods In Geotechnical Engineering Ix Volume 1
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Author : Manuel de Matos Fernandes
language : en
Publisher: CRC Press
Release Date : 2018-06-22
Numerical Methods In Geotechnical Engineering Ix Volume 1 written by Manuel de Matos Fernandes and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-06-22 with Technology & Engineering categories.
NUMGE 2018 is the ninth in a series of conferences on Numerical Methods in Geotechnical Engineering organized by the ERTC7 under the auspices of the International Society for Soil Mechanics and Geotechnical Engineering (ISSMGE). The first conference was held in 1986 in Stuttgart, Germany and the series continued every four years (1990 Santander, Spain; 1994 Manchester, United Kingdom; 1998 Udine, Italy; 2002 Paris, France; 2006 Graz, Austria; 2010 Trondheim, Norway; 2014 Delft, The Netherlands). The conference provides a forum for exchange of ideas and discussion on topics related to numerical modelling in geotechnical engineering. Both senior and young researchers, as well as scientists and engineers from Europe and overseas, are invited to attend this conference to share and exchange their knowledge and experiences. This work is the first volume of NUMGE 2018.
Pile Design And Construction Practice Fourth Edition
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Author : Michael Tomlinson
language : en
Publisher: CRC Press
Release Date : 1993-11-11
Pile Design And Construction Practice Fourth Edition written by Michael Tomlinson and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 1993-11-11 with Architecture categories.
The fourth edition of this well-known book is fully revised and up-dated. It deals comprehensively with every aspect of design and construction of all types of piled foundation. A key feature of this book is the large number of worked examples, many of which are based on actual problems encountered in practice.
Modeling Pile Behavior In Large Pile Groups Under Lateral Loading
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Author : Andrew Mason Dodds
language : en
Publisher:
Release Date : 2007
Modeling Pile Behavior In Large Pile Groups Under Lateral Loading written by Andrew Mason Dodds and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2007 with Earthquake resistant design categories.
Design Of Pile Foundations
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Author : Aleksandar Sedmak Vesić
language : en
Publisher: Transportation Research Board
Release Date : 1977-01-01
Design Of Pile Foundations written by Aleksandar Sedmak Vesić and has been published by Transportation Research Board this book supported file pdf, txt, epub, kindle and other format this book has been release on 1977-01-01 with Foundations categories.
Analysis Of Driven Pile Capacity Within Pre Bored Soil
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Author : Shengli Chen
language : en
Publisher:
Release Date : 2020
Analysis Of Driven Pile Capacity Within Pre Bored Soil written by Shengli Chen and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020 with Finite element method categories.