Rockmass Behavioural Uncertainty
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Rockmass Behavioural Uncertainty
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Author :
language : en
Publisher:
Release Date : 2014
Rockmass Behavioural Uncertainty written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014 with categories.
Geotechnical Baseline Reports (GBRs) have become a prevalent risk sharing mechanism on North American tunneling projects as they are based on the following risk allocation concept: the subsurface ground conditions described within the GBR are the financial responsibility of the Contractor, whereas encountered conditions which exceed those described belong to the Owner. This interpretation is intended to reduce project bid prices due to subsurface ground conditions uncertainty and the geotechnical rationale for a differing site conditions claim. However, recent tunnel project case studies have used the GBR as a risk transfer mechanism by presenting a conservative and/or limited interpretation of the expected ground conditions. In particular, the expected ground conditions are described with a summary of the intact and rockmass properties and empirical rockmass classification systems. This research has shown that the application of intact rock properties and rockmass classification systems to describe the various rockmasses along the tunnel alignment leads to rockmass behavioural uncertainty. Empirical rockmass classification systems are not able to adequately capture the effects of geologic uncertainty and the collective impact of the individual controls on rockmass behaviour. A new rock engineering design tool was developed which utilized geologic uncertainty and the capabilities of numerical modelling methods to predict and quantify rockmass behaviours. The 3D Rockmass Behaviour Map reduces subsurface ground conditions uncertainty as the range of possible rockmass behaviours is presented as a function of the three critical geomechanics parameters. Quantifying rockmass behaviours per tunnel domain demonstrates the effects of geologic uncertainty with rockmass behaviour mode switching. GBRs should include this 3D Rockmass Behaviour Map and quantified rockmass behaviours as these tools reduce uncertainty in the expected ground conditions and provide a greater understanding of the anticipated rockmass behaviours. Rather than using a conservative GBR which shifts subsurface ground conditions risk to a Contractor, this improved prediction of the expected ground conditions may result in better subsurface risk allocation, reduced construction contingencies, aid excavation means and methods selection, reduced geotechnical basis for a differing site condition claim, and provide greater certainty in the final project price and schedule.
Uncertainty Analysis In Rock Mass Classification And Its Application To Reliability Evaluation In Tunnel Construction
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Author : Hui Lu
language : en
Publisher:
Release Date : 2020
Uncertainty Analysis In Rock Mass Classification And Its Application To Reliability Evaluation In Tunnel Construction written by Hui Lu and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020 with Markov processes categories.
Uncertainty
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Author : Seymour Fiddle
language : en
Publisher: Greenwood
Release Date : 1980
Uncertainty written by Seymour Fiddle and has been published by Greenwood this book supported file pdf, txt, epub, kindle and other format this book has been release on 1980 with Language Arts & Disciplines categories.
Integrating Innovations Of Rock Mechanics
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Author : R.J. Rocca
language : en
Publisher: IOS Press
Release Date : 2015-12-11
Integrating Innovations Of Rock Mechanics written by R.J. Rocca and has been published by IOS Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015-12-11 with Technology & Engineering categories.
In November 2015, Buenos Aires, Argentina became the location of several important events for geo-professionals, with the simultaneous holding of the 8th South American Congress on Rock Mechanics (SCRM), the 15th Pan-American Conference on Soil Mechanics and Geotechnical Engineering (XV PCSMGE), and the 6th International Symposium on Deformation Characteristics of Geomaterials, as well as the 22nd Argentinean Congress of Geotechnical Engineering (CAMSIGXXII). This synergy brought together international experts, researchers, academics, professionals and geo-engineering companies in a unique opportunity to exchange ideas and discuss current and future practices in the areas of soil mechanics and rock mechanics, and their applications in civil, energy, environmental, and mining engineering. This book presents the proceedings of the 8th South American Congress on Rock Mechanics (SCRM). Topics covered include rock mechanics, rock engineering, natural resources, mining, mechanics, geology and engineering. Approximately 60% of the contributions are in English, and the remaining 40% of the contributions are in either Spanish or Portuguese.
Model Uncertainties In Foundation Design
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Author : Chong Tang
language : en
Publisher: CRC Press
Release Date : 2021-03-17
Model Uncertainties In Foundation Design written by Chong Tang and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021-03-17 with Technology & Engineering categories.
Model Uncertainties in Foundation Design is unique in the compilation of the largest and the most diverse load test databases to date, covering many foundation types (shallow foundations, spudcans, driven piles, drilled shafts, rock sockets and helical piles) and a wide range of ground conditions (soil to soft rock). All databases with names prefixed by NUS are available upon request. This book presents a comprehensive evaluation of the model factor mean (bias) and coefficient of variation (COV) for ultimate and serviceability limit state based on these databases. These statistics can be used directly for AASHTO LRFD calibration. Besides load test databases, performance databases for other geo-structures and their model factor statistics are provided. Based on this extensive literature survey, a practical three-tier scheme for classifying the model uncertainty of geo-structures according to the model factor mean and COV is proposed. This empirically grounded scheme can underpin the calibration of resistance factors as a function of the degree of understanding – a concept already adopted in the Canadian Highway Bridge Design Code and being considered for the new draft for Eurocode 7 Part 1 (EN 1997-1:202x). The helical pile research in Chapter 7 was recognised by the 2020 ASCE Norman Medal.
Risk And Uncertainty In Dam Safety
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Author : Desmond N. D. Hartford
language : en
Publisher: Thomas Telford
Release Date : 2004
Risk And Uncertainty In Dam Safety written by Desmond N. D. Hartford and has been published by Thomas Telford this book supported file pdf, txt, epub, kindle and other format this book has been release on 2004 with Social Science categories.
Intends to assist the dam owner in evaluating the needs for dam safety improvement, selecting and prioritizing remedial and corrective actions, and improving the operation, maintenance and surveillance procedures. This book is intended not only for industry specialists but also for readers outside the dam engineering community.
Expanding Underground Knowledge And Passion To Make A Positive Impact On The World
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Author : Georgios Anagnostou
language : en
Publisher: CRC Press
Release Date : 2023-04-12
Expanding Underground Knowledge And Passion To Make A Positive Impact On The World written by Georgios Anagnostou and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2023-04-12 with Technology & Engineering categories.
Expanding Underground - Knowledge and Passion to Make a Positive Impact on the World contains the contributions presented at the ITA-AITES World Tunnel Congress 2023 (Athens, Greece, 12 – 18 May, 2023). Tunnels and underground space are a predominant engineering practice that can provide sustainable, cost-efficient and environmentally friendly solutions to the ever-growing needs of modern societies. This underground expansion in more diverse and challenging infrastructure types or to novel underground uses can foster the changes needed. At the same time, the tunneling and underground space community needs to be better prepared and equipped with knowledge, tools and experience, to deal with the prevailing conditions, to successfully challenge and overcome adversities on this path. The papers in this book aim at contributing to the analysis of challenging conditions, the presentation and dissemination good practices, the introduction of new concepts, new tools and innovative elements that can help engineers and all stakeholders to reach their end goals. Expanding Underground - Knowledge and Passion to Make a Positive Impact on the World covers a wide range of aspects and topics related to the whole chain of the construction and operation of underground structures: Knowledge and Passion to Expand Underground for Sustainability and Resilience Geological, Geotechnical Site Investigation and Ground Characterization Planning and Designing of Tunnels and Underground Structures Mechanised Tunnelling and Microtunnelling Conventional Tunnelling, Drill-and-Blast Applications Tunnelling in Challenging Conditions - Case Histories and Lessons Learned Innovation, Robotics and Automation BIM, Big Data and Machine Learning Applications in Tunnelling Safety, Risk and Operation of Underground Infrastructure, and Contractual Practices, Insurance and Project Management The book is a must-have reference for all professionals and stakeholders involved in tunneling and underground space development projects.
Handbook Of Research On Trends And Digital Advances In Engineering Geology
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Author : Ceryan, Nurcihan
language : en
Publisher: IGI Global
Release Date : 2017-07-12
Handbook Of Research On Trends And Digital Advances In Engineering Geology written by Ceryan, Nurcihan and has been published by IGI Global this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017-07-12 with Science categories.
Engineering geologists face the task of addressing geological factors that can affect planning with little time and with few resources. A solution is using the right tools to save time searching for answers and devote attention to making critical engineering decisions. The Handbook of Research on Trends and Digital Advances in Engineering Geology is an essential reference source for the latest research on new trends, technology, and computational methods that can model engineering phenomena automatically. Featuring exhaustive coverage on a broad range of topics and perspectives such as acoustic energy, landslide mapping, and natural hazards, this publication is ideally designed for academic scientists, industry and applied researchers, and policy and decision makers seeking current research on new tools to aid in timely decision-making of critical engineering situations.
Tunnels And Underground Cities Engineering And Innovation Meet Archaeology Architecture And Art
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Author : Daniele Peila
language : en
Publisher: CRC Press
Release Date : 2019-04-17
Tunnels And Underground Cities Engineering And Innovation Meet Archaeology Architecture And Art written by Daniele Peila and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019-04-17 with Technology & Engineering categories.
Tunnels and Underground Cities: Engineering and Innovation meet Archaeology, Architecture and Art contains the contributions presented at the World Tunnel Congress 2019 (Naples, Italy, 3-9 May 2019). The use of underground space is continuing to grow, due to global urbanization, public demand for efficient transportation, and energy saving, production and distribution. The growing need for space at ground level, along with its continuous value increase and the challenges of energy saving and achieving sustainable development objectives, demand greater and better use of the underground space to ensure that it supports sustainable, resilient and more liveable cities. This vision was the source of inspiration for the design of the logos of both the International (ITA) and Italian (SIG) Tunnelling Association. By placing key infrastructures underground – the black circle in the logos – it will be possible to preserve and enhance the quality of the space at ground level – the green line. In order to consider and value underground space usage together with human and social needs, engineers, architects, and artists will have to learn to collaborate and develop an interdisciplinary design approach that addresses functionality, safety, aesthetics and quality of life, and adaptability to future and varied functions. The 700 contributions cover a wide range of topics, from more traditional subjects connected to technical challenges of design and construction of underground works, with emphasis on innovation in tunneling engineering, to less conventional and archetypically Italian themes such as archaeology, architecture, and art. The book has the following main themes: Archaeology, Architecture and Art in underground construction; Environment sustainability in underground construction; Geological and geotechnical knowledge and requirements for project implementation; Ground improvement in underground constructions; Innovation in underground engineering, materials and equipment; Long and deep tunnels; Public communication and awareness; Risk management, contracts and financial aspects; Safety in underground construction; Strategic use of underground space for resilient cities; Urban tunnels. Tunnels and Underground Cities: Engineering and Innovation meet Archaeology, Architecture and Art is a valuable reference text for tunneling specialists, owners, engineers, architects and others involved in underground planning, design and building around the world, and for academics who are interested in underground constructions and geotechnics.
Ground Support In Mining And Underground Construction
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Author : Ernesto Villaescusa
language : en
Publisher: CRC Press
Release Date : 2004-09-15
Ground Support In Mining And Underground Construction written by Ernesto Villaescusa and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2004-09-15 with Technology & Engineering categories.
The purpose of ground support is to safely maintain excavations for their expected lifespan. The effectiveness of ground support can be seen both in terms of personnel and equipment safety, and in terms of allowing the most economic extraction. Scientists, practitioners and technology developers have contributed to this volume, which covers rock ma