Download or read book Evaluation of Offshore In Situ Vane Test Results written by Jt Hoope and published by . This book was released on 1988 with total page 15 pages. Available in PDF, EPUB and Kindle. Book excerpt: An evaluation is presented of results from about 450 tests obtained with an offshore in-situ vane during geotechnical investigations in the North Sea and off the west coast of India. The soils tested are normally consolidated and included silts and clays with differing carbonate contents. The strength values of the in-situ vane are compared with strength results from triaxial tests, laboratory vane, and Torvane tests. These data are also correlated with in-situ test results obtained with the piezocone penetrometer. The in-situ vane shear strength data show a small scatter, and good agreement was found with unconsolidated undrained (UU) triaxial test results. The rate of post peak reduction in soil strength, measured on the vane shear strength-rotation curve, appears to depend on plasticity. Based on this study it is recommended that the vane be rotated to a minimum of 40° for very plastic clays to approximately 150° for clays with low plasticity, to determine post-peak strength behavior with great accuracy. It is suggested that the undrained shear strength values determined with the in-situ vane may be of greater value than other undrained shear strength measurements for axial pile design purposes. This study also yielded encouraging estimates of the coefficient of lateral stress at rest K0 based on in-situ vane and triaxial test data.

Download or read book Vane Shear Strength Testing in Soils written by Adrian F. Richards and published by ASTM International. This book was released on 1988 with total page 370 pages. Available in PDF, EPUB and Kindle. Book excerpt: "The objectives of the symposium were to review the state of knowledge of the vane shear test (VST) and to provide the latest information on test theory, methods, and interpretation for the purpose of improved standardization of the field and laboratory vane tests."--Overview.

Download or read book In Situ Vane Shear Testing at Sea written by B. McClelland and published by . This book was released on 1988 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt: In-situ vane shear testing to measure undrained shear strength in the offshore environment has experienced increased use and significant equipment improvements over the last decade. These changes arose from (1) the offshore petroleum industry's need to improve the quality of foundation site investigations for their structures, (2) technological advancements in mechanical and electrical systems, and (3) recognition by the geotechnical profession of the benefits of acquiring vane shear testing data for better interpretation of cohesive soil strength properties. This paper provides insight into the current international practice of in-situ vane shear testing by presenting results of a questionnaire to international experts. The paper also describes the historical developments that led to the current state of practice. A review of field vane deployment and important operational details is presented along with an appraisal of the applications of vane shear testing for foundation design purposes. The paper also presents various case studies demonstrating how vane shear testing data proved beneficial for offshore foundation design. Finally, the paper summarizes the author's opinions relative to the current state of the art of offshore vane shear testing and includes comments on possible future developments and applications.

Download or read book In Situ Testing Methods in Geotechnical Engineering written by Alan J. Lutenegger and published by CRC Press. This book was released on 2021-05-03 with total page 504 pages. Available in PDF, EPUB and Kindle. Book excerpt: In Situ Testing Methods in Geotechnical Engineering covers the field of applied geotechnical engineering related to the use of in situ testing of soils to determine soil properties and parameters for geotechnical design. It provides an overview of the practical aspects of the most routine and common test methods, as well as test methods that engineers may wish to include on specific projects. It is suited for a graduate-level course on field testing of soils and will also aid practicing engineers. Test procedures for determining in situ lateral stress, strength, and stiffness properties of soils are examined, as is the determination of stress history and rate of consolidation. Readers will be introduced to various approaches to geotechnical design of shallow and deep foundations using in situ tests. Importantly, the text discusses the potential advantages and disadvantages of using in situ tests.

Download or read book Geotechnical Abstracts written by and published by . This book was released on 1992 with total page 434 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Proceedings of the 16th International Conference on Soil Mechanics and Geotechnical Engineering written by The Organizing Committee of the 16th ICSMGE and published by IOS Press. This book was released on 2005-09-12 with total page 3742 pages. Available in PDF, EPUB and Kindle. Book excerpt: The 16th ICSMGE responds to the needs of the engineering and construction community, promoting dialog and exchange between academia and practice in various aspects of soil mechanics and geotechnical engineering. This is reflected in the central theme of the conference 'Geotechnology in Harmony with the Global Environment'. The proceedings of the conference are of great interest for geo-engineers and researchers in soil mechanics and geotechnical engineering. Volume 1 contains 5 plenary session lectures, the Terzaghi Oration, Heritage Lecture, and 3 papers presented in the major project session. Volumes 2, 3, and 4 contain papers with the following topics: Soil mechanics in general; Infrastructure and mobility; Environmental issues of geotechnical engineering; Enhancing natural disaster reduction systems; Professional practice and education. Volume 5 contains the report of practitioner/academic forum, 20 general reports, a summary of the sessions and workshops held during the conference.

Download or read book Design and Offshore Experience with an In Situ Vane written by JM. Geise and published by . This book was released on 1988 with total page 19 pages. Available in PDF, EPUB and Kindle. Book excerpt: The design, development, and use offshore of a commercial in-situ vane, operated from a carrier tool downhole or from a seabed jacking system, is described. This vane is inserted into soil at a rate of 20 mm/s for both deployment modes. The vane is rotated at a constant speed of either 0.1 or 0.2°/s in cohesive soils having a maximum shear strength of 200 kPa. Using the hard-tie drill string heave compensating system, the first downhole vane test may be within about 0.75 m of the borehole base in very soft soils; if the hard-tie is not used, then the first test should be about 1.5 m below the borehole base to avoid soil disturbed by drilling. Standards developed for onshore vane testing can be used for offshore vane testing with few modifications.

Download or read book Frontiers in Offshore Geotechnics II written by Susan Gourvenec and published by CRC Press. This book was released on 2010-10-04 with total page 934 pages. Available in PDF, EPUB and Kindle. Book excerpt: Frontiers in Offshore Geotechnics II comprises the Proceedings of the Second International Symposium on Frontiers in Offshore Geotechnics (ISFOG), organised by the Centre for Offshore Foundation Systems (COFS) and held at the University of Western Australia (UWA), Perth from 8 10 November 2010. The volume addresses current and emerging challenges

Download or read book Laboratory Manual for Geotechnical Characterization of Fine Grained Soils written by Alan J. Lutenegger and published by CRC Press. This book was released on 2023-06-20 with total page 274 pages. Available in PDF, EPUB and Kindle. Book excerpt: This manual presents procedures for performing advanced laboratory tests on fine-grained soils. It covers characterization tests, which determine soil composition and quantify the individual components of a soil, and behavioral tests, such as the Atterberg Limits tests that demonstrate how the fines fraction of a soil reacts when mixed with water and the Linear Shrinkage Test that demonstrates how much a soil shrinks. The material goes beyond traditional evaluation of basic soil behavior by presenting more advanced laboratory tests to characterize soil in more detail. These tests provide detailed compositional characteristics which identify subtle changes in conditions and vertical variations in the soil, and which help to explain unusual behavior. A unique compilation of information on key soil tests Combines characterization tests with behavior tests The book suits graduate students in geotechnical engineering, as well as practitioners and researchers.

Download or read book Evaluation of Geotechnical In situ Testing and Sampling Equipment for the Offshore Environment written by Woodward-Clyde Consultants and published by . This book was released on 1983 with total page 50 pages. Available in PDF, EPUB and Kindle. Book excerpt: "In recent years, exploration attention has been directed towards Arctic regions such as the Canadian Beaufort Sea, where permafrost (frozen soil) is encountered. Exploration and production facilities in these areas will be supported on gravity structures such as caisson-retained islands and cone shaped structures in order to resist the large lateral ice loads impinging upon such structures in Arctic regions. The design of such gravity structures relies upon accurate knowledge of the conditions and properties of both unfrozen and frozen soils underlying the structure location. Frozen soil conditions present unique geotechnical considerations in the design and construction of an offshore facility. Warm permafrost (temperatures between 0°C and -2°C), cold permafrost (temperature below -7°C), and solid natural gas (hydrates) are soil situations common to the Arctic regions. Sampling and in situ testing of these soils are important aspects of geotechnical site investigations for accurate definition of the subsurface soil behaviour .... A variety of sampling and in situ testing tools will be required to properly determine foundation conditions that can range from frozen to unfrozen clays, silts, and sands in the Beaufort Sea. ... In order to define a more site-specific situation, this report is an evaluation of in situ testing and sampling equipment to determine the geotechnical parameters necessary for design of a fictitious caisson-retained island with an underlying soil stratigraphy"--ASTIS database.

Download or read book Assessment and Requalification of Offshore Production Structures written by Wayne A. Dunlap and published by . This book was released on 1993 with total page 260 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book In Situ Testing in Geomechanics written by Fernando Schnaid and published by CRC Press. This book was released on 2009-01-13 with total page 352 pages. Available in PDF, EPUB and Kindle. Book excerpt: Demanding a thorough knowledge of material behaviour and numerical modelling, site characterisation and in situ test interpretation are no longer just basic empirical recommendations. Giving a critical appraisal of the understanding and assessment of the stress-strain-time and strength characteristics of geomaterials, this book explores new interpretation methods for measuring properties of a variety of soil formations. Emphasis is given to the five most commonly encountered in situ test techniques: standard penetration tests cone penetration tests vane test pressuremeter tests dilatometer tests Ideal for practising engineers in the fields of geomechanics and environmental engineering, this book solves numerous common problems in site characterisation. It is also a valuable companion for students coming to the end of their engineering courses and looking to work in this sector.

Download or read book Geotechnical and Geophysical Site Characterization written by António Viana da Fonseca and published by . This book was released on 2004 with total page 1082 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Soils and rocks are complex natural geomaterials that exhibit a wide range in strength, stiffness, state of stress, structure, and flow characteristics. Geotechnical & Geophysical Site Characterization provides eleven keynote state-of-the-art papers, including the Mitchell Lecture. A total selection of 219 technical papers and theme reports address methods of site exploration related to ground exploration for civil engineering and construction works. These two volumes represent a collection of experience & knowledge regarding various methods of in-situ testing, geophysical techniques, innovative devices, improved interpretation algorithms, and statistical treatment of field data for the characterization of soils, rocks, and other geomaterials. The papers represent the written records and documented efforts from international experts from industry, academe, and government who participated in the Second International Conference on Site Characterization held in Porto, Portugal on September 20-22, 2004. Topics include the utilization of rotary drilling, sampling, and coring techniques. Of particular interest is the variety of in-situ tests, including standard penetration, cone penetration, flat dilatometer, pressuremeter, vane shear, piezocone, dynamic probes, and specialized tools, as well as geophysical approaches: resistivity surveys, surface waves, crosshole, downhole, electromagnetic conductivity, and ground penetrating radar. A careful and proper site evaluation is required in the analysis and design of new structures, construction monitoring, and forensic studies that require remediation. Many of the contributions relate to case studies of projects that involve shallow foundations, drilled shafts, pilings, slope stability, excavations, earth dams, tunnels, and mining. Several papers discuss a combined approach using multiple methods and/or complementary set of geotechnical & geophysical tests to ascertain the characteristics of the ground."--back cover.

Download or read book Offshore Technology in Civil Engineering Volume Five written by J. S. Templeton, III and published by ASCE Publications. This book was released on 2010-04-01 with total page 134 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is the fifth volume in a series of publications containing classic papers from the early years of the Offshore Technology Conference (OTC), the world s leading event for the development of offshore resources in the fields of exploration, drilling, production, and environmental protection. The American Society of Civil Engineers (ASCE), through its participation in and support of the OTC, plays a major role in the innovation and evolution of the technologies needed to overcome the challenges facing development of resources in the offshore environment. The years since the first OTC Conference in 1969 have seen the presentation of over 10,000 papers in the various technical disciplines central to offshore development. A few of the civil engineering papers, presented throughout OTC s history, provided innovation in, vision for and lasting impact on the design, construction, or installation of offshore infrastructure. Many have been adopted by design standards worldwide or became an integral part of design software. Some have had influence far beyond the offshore industry, and some have become integral to the design process of onshore structures such as buildings and bridges. Offshore Technology in Civil Engineering: Hall of Fame Papers from the Early Years; Volume Five is a collection of the eight winning papers inducted in 2010 at an award ceremony during OTC in May of 2010. The engineering methods published in these papers have proven their value through widespread use, permeating codes, standards, guidelines, and engineering software.

Download or read book Futures in Mechanics of Structures and Materials written by Thiru Aravinthan and published by CRC Press. This book was released on 2008-11-20 with total page 915 pages. Available in PDF, EPUB and Kindle. Book excerpt: Futures in Mechanics of Structures and Materials is a collection of peer-reviewed papers presented at the 20th Australasian Conference on the Mechanics of Structures and Materials (ACMSM20, University of Southern Queensland, Toowoomba, Queensland, Australia, 2 - 5 December 2008) by academics, researchers and practicing engineers mainly from Austral

Download or read book Geotechnical and Geophysical Site Characterization written by An-Bin Huang and published by CRC Press. This book was released on 2008-04-04 with total page 260 pages. Available in PDF, EPUB and Kindle. Book excerpt: Geotechnical and Geophysical Site Characterization collects the papers presented at the Third International Conference on Site Characterization (ISC 3) that took place in Taipei from April 1-4, 2008. The subjects covered include new developments in mechanical in-situ testing and interpretation techniques, statistical analysis of test data, geo

Download or read book Cone Penetration Testing in Geotechnical Practice written by T. Lunne and published by CRC Press. This book was released on 2002-09-11 with total page 351 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides guidance on the specification, performance, use and interpretation of the Electric Cone Penetration Test (CPU), and in particular the Cone Penetration Test with pore pressure measurement (CPTU) commonly referred to as the "piezocone test".