Application Of Convergence Confinement Method In The Design And Construction Of Large Diameter Tunnels In Soft Ground
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Application Of Convergence Confinement Method In The Design And Construction Of Large Diameter Tunnels In Soft Ground
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Author : Yanan Li
language : en
Publisher:
Release Date : 2024
Application Of Convergence Confinement Method In The Design And Construction Of Large Diameter Tunnels In Soft Ground written by Yanan Li and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2024 with categories.
This dissertation focuses on a large-diameter and shallow-depth tunnel project for passenger cars and rail trains. Monitoring equipment (string gauge, ground settlement points, etc.) were installed from the outset of the project to gather pertinent data. With this large data set, used to monitor and analyze the surrounding soil and support structure of the tunnel, Convergence-Confinement Method (CCM) was systematically developed, including the Support Confinement Curve (SCC), Ground Reaction Curve (GRC), and Longitudinal Displacement Profile (LDP). First, this research initially aimed to identify the optimal approach for constructing these three CCM graphs: For SCC, the spatial distribution of axial force, bending moment, and radial displacement within the tunnel structure will be illustrated and compared with the other two models. Subsequently, essential field data will be utilized to establish the SCC. The GRC was formulated using a hardening soil model, selected after comparing indoor soil tests across various models. LDP were derived from monitoring the embankment's settlement as the tunnel was constructed. A numerical model was constructed and verified using monitoring results. This includes presenting and comparing the cross-section settlement curve with Peck's findings. Through these methods, the study sought to establish best practices for generating these key CCM graphs. The second thrust of this dissertation assembles these three curves and verification CCM from the construction process in a real large-diameter and shallow-depth tunnel project, validating the CCM equilibrium stress against monitoring data and corroborating the CCM results with data from strain gauge monitoring underscore the methodology's validity and reliability, establishing guidelines for tunnel project designs. Finally, to assess the applicability of CCM, the various findings resulting from this research are presented. This study finds that Terzaghi in-situ earth pressure is closer to CCM equilibrium earth pressure, which represents the soil stress after release. Therefore, Terzaghi loose earth pressure is deemed more suitable for application in the design in the Yellow River area. This study also extends to Wood's work to derive the compression factor when the tunnel is in the 'elliptical' mode of deformation and subsequently determined stress and displacement fields around a supported tunnel.
Tunnelling For A Better Life
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Author : Jinxiu Yan
language : en
Publisher: CRC Press
Release Date : 2024-05-29
Tunnelling For A Better Life written by Jinxiu Yan and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2024-05-29 with Technology & Engineering categories.
Tunnelling for a Better Life contain the contributions presented at the ITA-AITES World Tunnel Congress 2024, which was held from 19-25 April 2024 in Shenzhen, China. As urbanization accelerates, the pivotal role of tunnels and underground spaces in fostering environmental sustainability and improving quality of life becomes ever more pronounced. These underground structures serve as sustainable solutions to the challenges posed by rapid urban growth. By seamlessly integrating into urban landscapes, they alleviate congestion, reduce pollution, and enhance overall mobility, thus contributing to a greener and more sustainable urban environment. Moreover, tunnels and underground works provide vital support for various urban functions, such as accommodating economic activities, providing safe shelters during emergencies or disasters, and facilitating efficient utility management. They address immediate urban needs and lay the foundation for a better and more resilient future. By focusing on the latest trends in tunnelling and underground engineering, and looking ahead to the era of low-carbon and intelligent technology, the papers in this book illustrate the transformative potential of tunnels and underground works in shaping a better life for present and future generations. The contributions cover a comprehensive range of topics on tunnel engineering, showcasing the latest advancements, insights, and innovations across the following areas: 1. Planning and General Aspects 2. Design and Methodology 3. Geotechnics, Geology and Geophysical Prospecting 4. Ground Stability and Consolidation 5. Support and Lining 6. Conventional Tunnelling 7. Mechanized Tunneling (TBM, shield) 8. Immersed Tunnels 9. Waterproofing and Drainage 10. Instrumentation and Monitoring/ Testing and Inspection 11. Digital and Information Technology 12. Machine Learning 13. Underground Caverns/Underground Space Use 14. Operational Safety, Maintenance and Repair 15. Contractual Practices and Risk Management Tunnelling for a Better Life is a must-read for professionals, engineers, owners, and other stakeholders worldwide in tunnelling and underground engineering.
Design And Construction Of Tunnels
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Author : Pietro Lunardi
language : en
Publisher: Springer Science & Business Media
Release Date : 2008-02-20
Design And Construction Of Tunnels written by Pietro Lunardi and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008-02-20 with Science categories.
This work illustrates how the Analysis of Controlled Deformation in Rocks and Soils (ADECO-RS) is used in the design and the construction of tunnels. This is a very new and effective way of tunnel construction. The ADECO-RS approach makes a clear distinction between the design and the construction stages and allows reliable forecasts of construction times and costs to be made. It uses the advance core (the core of ground ahead of the face) as a structural tool for the long and short term stabilisation of tunnels, after its rigidity has first been regulated using conservation techniques.
Hris Abstracts
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Author :
language : en
Publisher:
Release Date : 1988
Hris Abstracts written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1988 with Highway engineering categories.
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.
Tunnel Engineering
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Author : Michael Sakellariou
language : en
Publisher: BoD – Books on Demand
Release Date : 2020-03-18
Tunnel Engineering written by Michael Sakellariou and has been published by BoD – Books on Demand this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020-03-18 with Technology & Engineering categories.
This volume presents a selection of chapters covering a wide range of tunneling engineering topics. The scope was to present reviews of established methods and new approaches in construction practice and in digital technology tools like building information modeling. The book is divided in four sections dealing with geological aspects of tunneling, analysis and design, new challenges in tunnel construction, and tunneling in the digital era. Topics from site investigation and rock mass failure mechanisms, analysis and design approaches, and innovations in tunnel construction through digital tools are covered in 10 chapters. The references provided will be useful for further reading.
Sprayed Concrete Lined Tunnels
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Author : Alun Thomas
language : en
Publisher: CRC Press
Release Date : 2008-10-08
Sprayed Concrete Lined Tunnels written by Alun 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 2008-10-08 with Technology & Engineering categories.
Practising engineers on site, in the design office or in client organizations will find this book an excellent introduction to the design and construction of sprayed concrete lined (SCL) tunnels. The complex behaviour of the early age behaviour of the sprayed concrete requires careful management. This book covers all aspects of SCL tunnelling – from the constituents of sprayed concrete to detailed design and management during construction. Although there is a close interdependence between all the facets of sprayed concrete, few engineers have the right breadth of experience and expertise, and this urgently needs to be transferred to the wider engineering community. Disseminating essential information for tunnelling engineers, Sprayed Concrete Lined Tunnels is key reading for all involved in or studying the process.
Underground Excavations In Rock
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Author : Evert Hoek
language : en
Publisher: CRC Press
Release Date : 1980-06-30
Underground Excavations In Rock written by Evert Hoek and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 1980-06-30 with Architecture categories.
Underground Excavations in Rock deals with the geotechnical aspects of the design of underground openings for mining and civil engineering processes.
Support Of Underground Excavations In Hard Rock
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Author : E. Hoek
language : en
Publisher: CRC Press
Release Date : 2000-01-01
Support Of Underground Excavations In Hard Rock written by E. Hoek and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2000-01-01 with Technology & Engineering categories.
The safe and economical construction of tunnels, mines, and other subterranean works depends on the correct choice of support systems to ensure that the excavations are stable. These support systems should be matched to the characterstics of the rock mass and the excavation techniques adopted. Establishing the support requirements, designing support systems and installing these correctly are essential elements in safe underground construction. This is a comprehensive and practical work which also gives access to user-friendly computer programmes which enable the investigation and design of support techniques. Details on how to obtain this software are also included in the book.
Tunnelling In Weak Rocks
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Author : Bhawani Singh
language : en
Publisher: Elsevier
Release Date : 2011-08-29
Tunnelling In Weak Rocks written by Bhawani Singh and has been published by Elsevier this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011-08-29 with Technology & Engineering categories.
Vast knowledge has been developed in the area of tunnelling in weak rocks over the years, and this book bridges an important gap by bringing all the information together for the benefit of the tunnelling Industry. In particular, tunnelling in poor conditions is a huge challenge for engineers and designers, and this book tackles all typical problems headon. Topics covered include classification approach, design approaches for site-specific grounds, a new invention on shielded tunnel boring machine, case histories, tunnel mechanics, risk engineering and management culture. - Based on extensive field research experiences in Himalayan region and Alps - Exclusive chapters on tunnelling hazards, squeezing ground conditions (a full detailed case study), swelling ground conditions, critical state rock mechanics, etc. - Supported by over 180 figures and 90 tables of data, and test examples (with solutions)