This book contains a careful analysis of geological and environmental issues and a correct reconstruction of the conceptual model
This leads to optimal design solutions
This book presents a synthesis of current knowledge about all the issues needed to ensure the safety to the workers during construction and to the users
The construction of tunnels involves the resolution of various complex technical problems depending on the geological and geological-environmental context in which the work fits.
Only a careful analysis of all the geological and geological-environmental issues and a correct reconstruction of the conceptual model can lead to optimal design solutions from all points of view (including financial) and ensure the safety of workers during the construction and users in the operation phase.
It was therefore felt that there was a need to collect in one volume the state of current knowledge about:
all the geological and environmental issues related to the construction of underground works
the different methodologies used for the reconstruction of the conceptual model
the different risk typologies that it is possible to encounter or that can arise from tunnel construction, and
the most important risk assessment, management and mitigation methodologies that are used in tunneling studies.
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This book examines the possible impacts of climate change on hydrology and water resources in the vast arid region of Northwest China, which is one of the world’s largest arid places.
The first chapter offers an introductory discussion of the physical geography and socioeconomic conditions in the region. Chapters 2 through 7 discuss the climate system and hydrologic system changes in the region, and assess some implications of these changes in relation to potential evapotranspiration, the hydrological cycle and spatiotemporal variations of the snow cover and glaciers as measured via remote sensing, geographic information systems, and statistical analysis. Chapters 8 and 9 focus on model description and experimental design for interpreting the hydro-climatic process, emphasizing the integration of water, climate, and land ecosystems through field observations and computer-based simulations. Chapter 10 examines some extreme hydrological events and presents a study using the historical trend method to investigate the spatial and temporal variability of changing temperature and precipitation extremes in the hyper-arid region of Northwest China.
A concluding chapter discusses possible strategies for sustainable watershed management. The contributors are acknowledged experts who bring broad, relevant experience on water resources research in China’s cold and arid regions. The lessons of this volume will prove useful for understanding arid areas elsewhere in the world.
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Synthesizing knowledge acquired as a result of significant research and development over recent years, Smart Structures clearly illustrates why these structures are of such intense current interest. Gaudenzi offers valuable insight into both how they behave and how and at what cost they could be designed and produced for real life applications in cutting edge fields such as vibration control, shape morphing, structural health monitoring and energy transduction.
Smart Structures offers a basic and fundamental description of smart structures from the physical, mathematical and engineering viewpoint. It explains the basic physics relating to the behaviour of active materials, gives the mathematical background behind the phenomena, and provides tools for numerical simulation. It also offers an insight into considerations related to the manufacturing, assembly and integration of smart structures.
Smart Structures is divided into 5 sections: in the first part a definition of smart structures is proposed, the motivation for developing a smart structure presented and the basic physics of active materials such aspiezoelectrics, electrostrictives, magnetostrictives and shape memory alloys briefly recalled. A second part is devoted to the mathematical modelling of piezoelectric bodies. The third part discusses actuation and sensing mechanisms based on which the active part of a smart structure will produce “results” on the passive one. The fourth part deals with active composites at the micromechanical and macromechanical level, and the fifth part is devoted to applications of smart structures with examples taken from the aerospace field.
This introduction to smart structures will be useful both for structural and mechanical designers, and for students and researchers at graduate level or beyond. The diverse industries involved in this rapidly evolving field include aerospace, automotive and bioengineering.
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Author: Maria Bostenaru Dan, Iuliana Armas and Agostino Goretti | Size: 17.7 MB | Format:PDF | Quality:Unspecified | Publisher: Springer | Year: 2014 | pages: 300 | ISBN: 9400779801, 9789400779808, 9789400779815
The classical field dealing with earthquakes is called “earthquake engineering” and considered to be a branch of structural engineering. In projects dealing with strategies for earthquake risk mitigation, urban planning approaches are often neglected. Today interventions are needed on a city, rather than a building, scale. This work deals with the impact of earthquakes, including also a broader view on multihazards in urban areas. Uniquely among other works in the field, particular importance is given to urban planning issues, in conservation of heritage and emergency management. Multicriteria decision making and broad participation of those affected by disasters are included.
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This book deals with the basic concepts of GIS and optimization. It provides an overview of various integration protocols that are termed GIS-O integration strategies applied to practical applications. It also develops an integration approach for the vehicle routing problem with resource and distance requirements and approves it with numerical results. The book will be useful for researchers, decision makers, and practitioners who try to implement upgraded systems that derive benefits of both GIS and optimization
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This handy reference manual puts a wealth of ready-to-use information, data, and practical procedures within immediate reach of geo-engineers and technicians, whether they be in the field or office. It assembles and organizes the most-needed set of equations, tables, graphs and check-lists on six major subfields of geo-engineering: investigations, testing, properties, hazards, structures and works.
This practical reference for the professional and others interested in the subject of ground engineering skips lengthy definitions to highlight best practice and methods proven most effective. While reflecting codes and standards, it also fills the gaps with non-standard approaches when existing ones are skimpy on practical details or agreement. Enhanced by 146 illustrations and 83 tables, the Practical Guide to Geo-Engineering points users to supporting information and data through its extensive reference list.
Audience:
This book is of interest to everyone involved in practical geo-engineering.
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Topology Optimization in Structural and Continuum Mechanics
Author: George I. N. Rozvany, Tomasz Lewiński | Size: 12 MB | Format:PDF | Quality:Unspecified | Publisher: Springer | Year: 2014 | pages: 471 | ISBN: 9783709116425, 9783709116432
The book covers new developments in structural topology optimization. Basic features and limitations of Michell’s truss theory, its extension to a broader class of support conditions, generalizations of truss topology optimization, and Michell continua are reviewed. For elastic bodies, the layout problems in linear elasticity are discussed and the method of relaxation by homogenization is outlined. The classical problem of free material design is shown to be reducible to a locking material problem, even in the multiload case. For structures subjected to dynamic loads, it is explained how they can be designed so that the structural eigenfrequencies of vibration are as far away as possible from a prescribed external excitation frequency (or a band of excitation frequencies) in order to avoid resonance phenomena with high vibration and noise levels. For diffusive and convective transport processes and multiphysics problems, applications of the density method are discussed. In order to take uncertainty in material parameters, geometry, and operating conditions into account, techniques of reliability-based design optimization are introduced and reviewed for their applicability to topology optimization.
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Landslides in sensitive clays represent a major hazard in the northern countries of the world such as Canada, Finland, Norway, Russia, Sweden and in the US state of Alaska. Past and recent examples of catastrophic landslides at e.g. Saint-Jean-Vianney in 1971, Rissa in 1979, Finneidfjord in 1996 and Kattmarka in 2009 have illustrated the great mobility of the remolded sensitive clays and their hazardous retrogressive potential. These events call for a better understanding of landslide in sensitive clay terrain to assist authorities with state-of-the-art hazard assessment methods, risk management schemes, mitigation measures and planning. During the last decades the elevated awareness regarding slope movement in sensitive clays has led to major advances in mapping techniques and development of highly sophisticated geotechnical and geophysical investigation tools. Great advances in numerical techniques dealing with progressive failure and landslide kinematic have also lead to increase understanding and predictability of landslides in sensitive clays and their consequences. This volume consists of the latest scientific research by international experts dealing with geological, geotechnical and geophysical aspects of slope failure in sensitive clays and focuses on understanding the full spectrum of challenges presented by landslides in such brittle materials.
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The experience of people working with different perspectives in different fields of masonry modeling, from mathematics to applied engineering and practice, is brought together in this book. It presents both the theoretical background and an overview of the state-of-the-art in static and dynamic masonry modeling.
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