Download or read book Analysis of Pile Capacity Design Using Cone Penetrometer Data Through Case Studies written by Chad Lloyd Held and published by . This book was released on 2002 with total page 1108 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Cone Penetration Testing 2018 written by Michael A. Hicks and published by CRC Press. This book was released on 2018-06-13 with total page 757 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cone Penetration Testing 2018 contains the proceedings of the 4th International Symposium on Cone Penetration Testing (CPT’18, Delft, The Netherlands, 21-22 June 2018), and presents the latest developments relating to the use of cone penetration testing in geotechnical engineering. It focuses on the solution of geotechnical challenges using the cone penetration test (CPT), CPT add-on measurements and companion in-situ penetration tools (such as full flow and free fall penetrometers), with an emphasis on practical experience and application of research findings. The peer-reviewed papers have been authored by academics, researchers and practitioners from many countries worldwide and cover numerous important aspects, ranging from the development of innovative theoretical and numerical methods of interpretation, to real field applications. This is an Open Access ebook, and can be found on www.taylorfrancis.com.
Download or read book Comparison of Measured Pile Capacity to Pile Capacity Predictions Made Using Electronic Cone Penetration Data written by Ronald L. Richman and published by . This book was released on 1989 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Evaluation of Bearing Capacity of Piles from Cone Penetration Test Data written by Hani H. Titi and published by . This book was released on 1999 with total page 122 pages. Available in PDF, EPUB and Kindle. Book excerpt: This study presents an evaluation of the performance of eight cone penetration test (CPT) methods in predicting the ultimate load carrying capacity of square precast prestressed concrete (PPC) piles driven into Louisiana soils. Sixty piles were identified, collected, and analyzed. The following methods were used to predict the load carrying capacity of the collected piles using the CPT data: Schmertmann, Bustamante and Gianeselli (LCPC/LCP), de Ruiter and Beringen, Tumay and Fakhroo, Price and Wardle, Philipponnat, Aoki and De Alencar, and the penpile method. The ultimate load carrying capacity for each pile was also predicted using the static method, which is used by the Louisiana Department of Transportation and Development for pile design and analysis.
Download or read book Pile Design and Construction Rules of Thumb written by Ruwan Abey Rajapakse and published by Butterworth-Heinemann. This book was released on 2016-02-20 with total page 380 pages. Available in PDF, EPUB and Kindle. Book excerpt: Pile Design and Construction Rules of Thumb presents Geotechnical and Civil Engineers a comprehensive coverage of Pile Foundation related theory and practice. Based on the author’s experience as a PE, the book brings concise theory and extensive calculations, examples and case studies that can be easily applied by professional in their day-to-day challenges. In its first part, the book covers the fundamentals of Pile Selection: Soil investigation, condition, pile types and how to choose them. In the second part it addresses the Design of Pile Foundations, including different types of soils, pile groups, pile settlement and pile design in rock. Next, the most extensive part covers Design Strategies and contains chapters on loading analysis, load distribution, negative skin friction, design for expansive soils, wave equation analysis, batter piles, seismic analysis and the use of softwares for design aid. The fourth part covers Construction Methods including hammers, Inspection, cost estimation, load tests, offshore piling, beams and caps. In this new and updated edition the author has incorporated new pile designs such as helical, composite, wind turbine monopiles, and spiral coil energy piles. All calculations have been updated to most current materials characteristics and designs available in the market. Also, new chapters on negative skin friction, pile driving, and pile load testing have been added. Practicing Geotechnical, and Civil Engineers will find in this book an excellent handbook for frequent consult, benefiting from the clear and direct calculations, examples, and cases. Civil Engineering preparing for PE exams may benefit from the extensive coverage of the subject. Convenient for day-to-day consults Numerous design examples for sandy soils, clay soils, and seismic loadings Now including helical, composite, wind turbine monopiles, and spiral coil energy piles Methodologies and case studies for different pile types Serves as PE exam preparation material
Download or read book Analysis of Piezocone Data for Displacement Pile Design written by James A. Schneider and published by . This book was released on 2007 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Due to the similarity between the geometry and full displacement installation method of a cone penetrometer and displacement pile, the axial capacity of displacement piles is often assessed using data from a cone penetration test (CPT). As there are many more factors influencing pile axial capacity than affecting CPT cone resistance, there are a wide range of CPT-based empirical design methods in use. These methods have various levels of predictive success, which usually depends upon the soil conditions, pile geometry, pile installation method, and time between installations and loading. An improved understanding of the basis and reliability of respective design methods is essential to improve the quality of predictions in the absence of site specific load test data. This thesis explores the influence of soil state and drainage conditions on piezocone penetration test (CPTU) tip resistance (qc) and penetration pore pressures (u2). For cone penetration testing identified as 'drained', factors influencing the correlation between cone tip resistance and displacement pile shaft friction in sand are investigated through (i) a review of previous research and the performance of existing design methods; (ii) centrifuge studies of piles of differing widths with measurements of local lateral stress; (iii) field tension tests at different times between installation and loading for uninstrumented driven piles with different diameters and end conditions; and (iv) field tension tests at different times between installation and loading on closed ended strain gauged jacked segmented model piles with different installation sequences. CPTU qc and u2 are primarily controlled by soil state and drainage conditions, with effective stress strength parameters and soil stiffness also influencing the measurements. The primary mechanisms identified to control the correlation between cone tip resistance and shaft friction on displacement piles are identified as; (i) the initial increase in radial stress due to soil displaced during installation of a pile; (ii) different levels of soil displacement induced by open, closed, and partially plugged piles; (iii) reduction in radial stress behind the pile tip; (iv) additional reduction in radial stress with continued pile penetration (friction fatigue); (v) changes in radial stress during loading; (vi) constant volume interface friction angle between soil and steel; and (vii) changes in the effects of the above mentioned mechanisms with time between installation and loading. The relative effect of each of these factors is investigated in this thesis.
Download or read book Geotechnical and Geophysical Site Characterization 4 written by Roberto Quental Coutinho and published by CRC Press. This book was released on 2012-09-06 with total page 1888 pages. Available in PDF, EPUB and Kindle. Book excerpt: Site characterization is a fundamental step towards the proper design, construction and long term performance of all types of geotechnical projects, ranging from foundation, excavation, earth dams, embankments, seismic hazards, environmental issues, tunnels, near and offshore structures. Geotechnical and Geophysical Site Characterization 4 provides practical applications of novel and innovative technologies in geotechnical and geophysical engineering, and is of interest to academics, engineers and professionals involved in Geotechnical Engineering.
Download or read book Theory and Practice of Pile Foundations written by Wei Dong Guo and published by CRC Press. This book was released on 2012-11-14 with total page 579 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Pile Driving Analysis for Pile Design and Quality Assurance written by Rodrigo Salgado and published by . This book was released on 2018-02 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Pile Design and Construction Practice written by Willis H. Thomas and published by CRC Press. This book was released on 2007-12-06 with total page 566 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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
Download or read book Bearing Capacity of Piles from Cone Penetration Test Data written by and published by . This book was released on 1997 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Piezocone and Cone Penetration Test CPTu and CPT Applications in Foundation Engineering written by Abolfazl Eslami and published by Butterworth-Heinemann. This book was released on 2019-11-23 with total page 392 pages. Available in PDF, EPUB and Kindle. Book excerpt: Piezocone and cone penetration tests (CPTu and CPT) applications in foundation engineering includes different approaches for determining the bearing capacity of shallow foundations, along with methods for determining pile bearing capacity and settlement concepts. The use of soft computing (GMDH) neural networks related to CPT records and Geotechnical parameters are also discussed. In addition, different cases regarding the behavior of foundation performance using case records, such as shallow foundation, deep soil improvement, soil behavior classification (SBC), and bearing capacity are also included. Provides the latest on CPT and CPTu performance in geotechnical engineering, i.e., bearing capacity, settlement, liquefaction, soil classification and shear strength prediction Introduces soft computing methods for processing soil properties and pile bearing capacity via CPT and CPTu Explains CPT and CPTu testing methods which allows for the continuous, or virtually continuous, record of ground conditions
Download or read book Determination of P y Curves by Direct Use of Cone Penetration Test CPT Data written by SHAWN SHAHRIAR ARIANNIA and published by . This book was released on 2015 with total page 249 pages. Available in PDF, EPUB and Kindle. Book excerpt: The current best practice in geotechnical engineering in determining lateral capacity of piles is to replace the soil reaction with a series of independent springs. Basically, the model uses beam theory to represent the pile and uncoupled, non-linear load transfer functions, called p-y curves to represent the soil. Most of the existing methods for determining p-y curves are highly empirical, based on a limited number of cases of laterally loaded piles, which were instrumented, enabling to measure the pile deflection in discrete depth intervals subject to different lateral load (i.e. Matlock 1970, Reese 1975). In essence, these methods have their own limitations, and are mainly applicable for the conditions similar to the tested conditions. Although later, more detailed investigations by different people addressed some of the problems, still the basis of the existing design programs such as LPILE, or procedures introduced in applicable codes such as API (American Petroleum Institute), is the same original recommendations made by Matlock and Reese during seventies. In recent era, demand in employment of in-situ direct-pushed based methods using multi-measurement in-situ devices, such as the seismic cone penetration test with pore water measurement (SCPTu) and Seismic Flat Dilatometer Test (SDMT) is significantly increased. The main objective of this research is to introduce a unified CPT-based approach for determining p-y curves and pile responses to lateral loads. The suggested approach will provide explicit and defined steps/criteria to develop p-y curves for piles subjected to lateral loads using CPT data. CPT data will be used to determine soil strength parameters. Recent developments in relating CPT data to soil basic parameters using Critical State Soil Mechanics (CSSM) framework will be implemented in the suggested model. In all current common models, pre-determination of the soil behavior and the model to be used (e.g. Matlock clay, 1970 or Reese sand, 1975), will become warranted even before commencement of the analysis. On the contrary, in the proposed model, the need for the said pre-determination of soil behavior is eliminated. As discussed in Section 2.3.5, soil behavior in the model is being classified into four broad and general groups: drained-dilative, drained- contractive, undrained-dilative and undrained-contractive The main factor driving the suggested analytical approach is Soil Behavior Type Index, Ic. In the proposed approach, the SBT index, Ic, will be used to determine the in-situ characteristics and behavior of the soil. Based on the value of Ic calculated from CPT data, it could be determined that the soil behaves as a sand-like or a clay-like soil, and during the shearing would behave in undrained or drained condition. The measured shear wave velocity during field test using seismic cone penetration test or other methods such as SASW (Spectral Analysis of Surface Waves) or Cross-Hole logging, may be used to determine the small strain shear modulus, G0, which corresponds to the initial stiffness of the linear part of the p-y curve. In this research, the proposed model will be verified using collected case histories of laterally loaded piles with available CPT data at the same site. The p-y curves, and pile force-head displacements determined from the model will be compared to the field-resulted p-y curves and pile head displacement measurements available from the case histories.
Download or read book Guidelines for Cone Penetration Test written by United States. Federal Highway Administration. Implementation Division and published by . This book was released on 1977 with total page 164 pages. Available in PDF, EPUB and Kindle. Book excerpt: This manual presents procedures and guidelines applicable to the use of the cone penetration test. It represents the author's interpretation of the state-of-the-art in Dutch static cone testing as of February 1977. Its contents should provide assistance and uniformity to engineers concerned with the interpretation of the data obtained from such testing. Only geotechnical engineers familiar with the fundamentals of soil mechanics and foundation engineering should use this manual. The manual includes: Introduction and review of the general principals concerning cone penetrometer testing. Individual design chapters which address topics such as: pile design, shear strength estimation, settlement calculation and compaction control; and Appendices which present previously published, pertinent information on cone penetrometer testing.
Download or read book Design of Pile Foundations written by Aleksandar Sedmak Vesić and published by Transportation Research Board. This book was released on 1977-01-01 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Basics of Foundation Design written by Bengt Fellenius and published by Lulu.com. This book was released on 2017-03-17 with total page 488 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Use of Quasi static Friction Cone Penetrometer Data to Predict Load Capacity of Displacement Piles written by Larry Curtis Nottingham and published by . This book was released on 1975 with total page 1106 pages. Available in PDF, EPUB and Kindle. Book excerpt: A study to determine the applicability of quasi-static friction cone penetrometer data for predicting the load capacity of displacement piles is presented. The study included performing and evaluating 108 load tests on large-scale model piles, from which load capacity prediction equations were developed. Data from load tests on 15 full-scale piles were used to verify the equations developed from the model pile tests. Three types of model piles were used in the study: a 4.0 in square precast concrete pile; a 4.0 in diameter pipe pile; and a step-taper pile with section diameters ranging from 2.9 to 4.5 in. All piles were driven and tested under field conditions to simulate an actual pile situation, and each pile was instrumented to permit separation of total load capacity into end bearing and side friction components. Each test site was investigated with a Begemann mechanical friction sleeve penetrometer and a Fugro electrical friction sleeve penetrometer, and tests were conducted in both cohesive and granular soils. The different combinations of soil types, penetrometer types', and pile types investigated permitted development of design equations applicable to a wide variety of situations. The results of this study show that the Begemann procedure for estimating pile end bearing capacity in granular soils provided good agreement with the load test results and is a valid design tool. It is also demonstrated that the Begemann procedure is valid for cohesive soils and electrical penetrometer data. When using mechanical penetrometer data for cohesive soils, it is necessary to correct the penetrometer data for tip mantle friction effects before the data can be used to predict pile end bearing capacity. Equations and design curves are developed and presented to permit estimating pile side friction from penetrometer sleeve friction (fs) data. The equations provide answers which agree well with measured side friction resistance on the model piles and the total predicted capacity for full-scale piles, obtained by adding predicted end resistance and side friction, agree well with measured total capacity. It is shown thai f s values in yranular soils differ significantly for the mechanical and electrical penetrometers, primarily because of end bearing on the lower beveled portion of the mechanical penetrometer friction sleeve. Separate design curves which account for this difference are presented for each penetrometer type. A conventional undrained shear strength approach is recommended for predicting pile side friction in cohesive soils. For the soils investigated, it is shown that measured f $ values are approximately equal for the two penetrometers used and that fs is approximately equal to the undrained shear strength of the soil, as determined from conventional laboratory tests. Drained friction methods of estimating side friction in cohesive soils are also evaluated, and it is concluded that the drained friction approach will ultimately provide a more accurate and fundamentally more correct solution to the pile friction problem. A method of estimating the shaft resistance of step-taper piles is presented in which the shaft resistance is divided into side friction and step-bearing components. Side friction is estimated using equations for a constant section pile and step bearing is estimated from conebearing resistance at the diameter step levels. Predictions obtained in this manner agreed well with measured shaft resistance. The prediction method for step-taper piles is extended for use with continuously tapered piles and used to estimate the capacity of full-scale timber piles. The agreement between measured and predicted capacity is good. It is concluded that the quasi-static cone penetrometer is a valuable tool for estimating the load capacity of displacement piles.
