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Author: Emily Jacobsen Publisher: ISBN: Category : Languages : en Pages : 307
Book Description
Rack shelving structures, made of cold-formed or hot-rolled members, are used in a variety of contexts, in storage and distribution centres and in publicly accessible warehouse type stores stacked with merchandise on pallets. Racks are typically composed of braced-frames in the "cross-aisle" direction and semi-rigid moment-frames in the "down-aisle" direction. The moment-frames are semi-rigid due to their clip-in or bolt-on beam-column connections which allow easy assembly and geometric modifications according to user needs. This project aims to characterise the seismic response of these semi-rigid moment frames, develop a robust model and test the proposed seismic design provisions currently under development as an annex to the CSA S16 - Design of steel structures
Author: Emily Jacobsen Publisher: ISBN: Category : Languages : en Pages : 307
Book Description
Rack shelving structures, made of cold-formed or hot-rolled members, are used in a variety of contexts, in storage and distribution centres and in publicly accessible warehouse type stores stacked with merchandise on pallets. Racks are typically composed of braced-frames in the "cross-aisle" direction and semi-rigid moment-frames in the "down-aisle" direction. The moment-frames are semi-rigid due to their clip-in or bolt-on beam-column connections which allow easy assembly and geometric modifications according to user needs. This project aims to characterise the seismic response of these semi-rigid moment frames, develop a robust model and test the proposed seismic design provisions currently under development as an annex to the CSA S16 - Design of steel structures
Author: Carlo Andrea Castiglioni Publisher: Springer ISBN: 3319284665 Category : Technology & Engineering Languages : en Pages : 502
Book Description
This book presents the main outcomes of the first European research project on the seismic behavior of adjustable steel storage pallet racking systems. In particular, it describes a comprehensive and unique set of full-scale tests designed to assess such behavior. The tests performed include cyclic tests of full-scale rack components, namely beam-to-upright connections and column base connections; static and dynamic tests to assess the friction factor between pallets and rack beams; full-scale pushover and pseudodynamic tests of storage racks in down-aisle and cross-aisle directions; and full-scale dynamic tests on two-bay, three-level rack models. The implications of the findings of this extensive testing regime on the seismic behavior of racking systems are discussed in detail, highlighting e.g. the confirmation that under severe dynamic conditions “sliding” is the main factor influencing rack response. This work was conceived during the development of the SEISRACKS project. Its outcomes will contribute significantly to increasing our knowledge of the structural behavior of racks under earthquake conditions and should inform future rack design.
Author: Publisher: ISBN: 9789279538971 Category : Languages : en Pages : 148
Book Description
The project focuses on the seismic design of static steel pallet racks, which are widely adopted in warehouses. Despite their lightness, racks can be loaded with tons of valuable goods, a live load by far higher than the self-weight, opposite to what happens in usual civil engineering structures. The loss of these goods during an earthquake may represent, for the owner, a very large economic loss, much larger than the cost of the whole rack on which the goods are stored or of the cost for its seismic upgrade. Hence, solution of the problems connected with safe and reliable design of steel storage racks in seismic areas has a very large economic impact. The objective of the SEISRACKS2 project is to increase knowledge on actual structural behaviour and ductility of steel pallet racks, and to assess design rules for earthquake conditions by full-scale testing and numerical simulation. Main outcomes of the research are: 1. Detailed reports on the different aspects investigated; 2. Validation or invalidation of the rules in the current version of FEM 10.2.08; 3. Improvements and extension of the current rules in order to optimize the seismic behaviour of structures designed according to European rules; 4. Definition of standardized experimental procedures to qualify structural elements of rack structures to be used in seismic areas; 5. A new software tool for the design of rack structures under seismic loads.
Author: Federal Emergency Agency Publisher: FEMA ISBN: Category : Languages : en Pages : 169
Book Description
During the past few decades, the number of large public warehouse stores (often referred to as big-box stores) across the nation has grown significantly, changing both consumer buying habits and the public's risk of injury during earthquakes. During an earthquake, occupant safety in a big-box store depends on both the structural performance of the building and on the performance of the storage racks and their contents. Earthquake ground motions can cause storage racks to collapse or overturn if they are not properly designed, installed, maintained, and loaded. In addition, goods stored on the racks may spill or topple off. Both occurrences pose a life-safety risk to the exposed shopping public. The immediate stimulus for the project that resulted in this report was a 2003 request from the State of Washington to the Federal Emergency Management Agency (FEMA) for guidance concerning the life-safety risk posed by the storage racks in publicly accessible areas of retail stores, especially the risk of rack collapse of loss of stored goods during an earthquake. FEMA asked the Building Seismic Safety Council (BSSC) to develop the requested guidance. To do so, the BSSC established a Rack Project Task Group composed of practicing engineers, storage rack designers, researchers, representatives of the Rack Manufacturers Institute (RMI) and the Retail Industry Leaders Association, and members of applicable technical subcommittees responsible for updating the NEHRP Recommended Provisions. In developing this guidance document, the Task Group focused primarily on steel single selective pallet storage racks. It reviewed available information on storage rack performance during earthquakes and the background on the development of standards and code requirements for storage racks; assessed seismic requirements for storage racks and current practices with respect to rack design, maintenance and operations, quality assurance, and post-earthquake inspections; and examined available research and testing data. Based on its study, the Task Group developed short-term recommendations to improve current practice and formulated long-term recommendations to serve as the basis for improved standards documents such as the NEHRP Recommended Provisions, ASCE 7, and the RMI-developed storage rack specification. Over the near term, the Task Group recommends that the 2003 NEHRP Recommended Provisions requirements for steel single selective pallet storage rack design be followed and that connections be checked in accordance with a procedure to be developed by RMI. The Task Group also recommends that additional guidance presented in this report be voluntarily adopted by store owners and operators. Further, given the fact that maintenance and use of storage racks is a key element to their acceptable performance during earthquakes, store owners and operators should adopt an appropriate quality assurance plan; as a minimum, the best self-imposed practices of store owners and operators should be maintained. The Task Group's primary long-term recommendation is that the RMI specification be brought into conformance with the 2003 NEHRP Recommended Provisions, which is the basis for seismic requirements found in current seismic design standards and model building codes. The Task Group also recommends that optional performance-based and limit state procedures and component cyclic testing procedures be incorporated into the RMI-developed specification. Compliance with these procedures will demonstrate that the storage racks have the capacity to resist maximum considered earthquake ground motions without collapse. It also is recommended that regulatory bodies periodically review the quality assurance programs of stores and implement any regulations needed to satisfy life-safety concerns that relate to the securing of rack contents and rack maintenance and use.
Author: Publisher: ISBN: 9789279538964 Category : Languages : en Pages : 148
Book Description
The project focuses on the seismic design of static steel pallet racks, which are widely adopted in warehouses. Despite their lightness, racks can be loaded with tons of valuable goods, a live load by far higher than the self-weight, opposite to what happens in usual civil engineering structures. The loss of these goods during an earthquake may represent, for the owner, a very large economic loss, much larger than the cost of the whole rack on which the goods are stored or of the cost for its seismic upgrade. Hence, solution of the problems connected with safe and reliable design of steel storage racks in seismic areas has a very large economic impact. The objective of the SEISRACKS2 project is to increase knowledge on actual structural behaviour and ductility of steel pallet racks, and to assess design rules for earthquake conditions by full-scale testing and numerical simulation. Main outcomes of the research are: 1. Detailed reports on the different aspects investigated; 2. Validation or invalidation of the rules in the current version of FEM 10.2.08; 3. Improvements and extension of the current rules in order to optimize the seismic behaviour of structures designed according to European rules; 4. Definition of standardized experimental procedures to qualify structural elements of rack structures to be used in seismic areas; 5. A new software tool for the design of rack structures under seismic loads.
Author: George A. Papagiannopoulos Publisher: Springer Nature ISBN: 3030806871 Category : Science Languages : en Pages : 519
Book Description
The book, after two introductory chapters on seismic design principles and structural seismic analysis methods, proceeds with the detailed description of seismic design methods for steel building structures. These methods include all the well-known methods, like force-based or displacement-based methods, plus some other methods developed by the present authors or other authors that have reached a level of maturity and are applicable to a large class of steel building structures. For every method, detailed practical examples and supporting references are provided in order to illustrate the methods and demonstrate their merits. As a unique feature, the present book describes not just one, as it is the case with existing books on seismic design of steel structures, but various seismic design methods including application examples worked in detail. The book is a valuable source of information, not only for MS and PhD students, but also for researchers and practicing engineers engaged with the design of steel building structures.
Author: M. J. N. Priestley Publisher: Iuss Press ISBN: Category : Science Languages : en Pages : 750
Book Description
Displacement-Based Seismic Design of Structures is a book primarily directed towards practicing structural designers who are interested in applying performance-based concepts to seismic design. Since much of the material presented in the book has not been published elsewhere, it will also be of considerable interest to researchers, and to graduate and upper-level undergraduate students of earthquake engineering who wish to develop a deeper understanding of how design can be used to control seismic response. The design philosophy is based on determination of the optimum structural strength to achieve a given performance limit state, related to a defined level of damage, under a specified level of seismic intensity. Emphasis is also placed on how this strength is distributed through the structure. This takes two forms: methods of structural analysis and capacity design. It is shown that equilibrium considerations frequently lead to a more advantageous distribution of strength than that resulting from stiffness considerations. Capacity design considerations have been re-examined, and new and more realistic design approaches are presented to insure against undesirable modes of inelastic deformation. The book considers a wide range of structural types, including separate chapters on frame buildings, wall buildings, dual wall/frame buildings, masonry buildings, timber structures, bridges, structures with isolation or added damping devices, and wharves. These are preceded by introductory chapters discussing conceptual problems with current force-based design, seismic input for displacement-based design, fundamentals of direct displacement-based design, and analytical tools appropriate for displacement-based design. The final two chapters adapt the principles of displacement-based seismic design to assessment of existing structures, and present the previously developed design information in the form of a draft building code. The text is illustrated by copious worked design examples (39 in all), and analysis aids are provided in the form of a CD containing three computer programs covering moment-curvature analysis (Cumbia), linear-element-based inelastic time-history analysis (Ruaumoko), and a general fibre-element dynamic analysis program (SeismoStruct). The design procedure developed in this book is based on a secant-stiffness (rather than initial stiffness) representation of structural response, using a level of damping equivalent to the combined effects of elastic and hysteretic damping. The approach has been fully verified by extensive inelastic time history analyses, which are extensively reported in the text. The design method is extremely simple to apply, and very successful in providing dependable and predictable seismic response. Authors Bios M.J.N.Priestley Nigel Priestley is Professor Emeritus of the University of California San Diego, and co-Director of the Centre of Research and Graduate Studies in Earthquake Engineering and Engineering Seismology (ROSE School), Istituto Universitario di Studi Superiori (IUSS), Pavia, Italy. He has published more than 450 papers, mainly on earthquake engineering, and received numerous awards for his research. He holds honorary doctorates from ETH, Zurich, and Cujo, Argentina. He is co-author of two previous seismic design books “Seismic Design of Concrete and Masonry Buildings” and “Seismic Design and Retrofit of Bridges”, that are considered standard texts on the subjects. G.M.Calvi Michele Calvi is Professor of the University of Pavia and Director of the Centre of Research and Graduate Studies in Earthquake Engineering and Engineering Seismology (ROSE School), Istituto Universitario di Studi Superiori (IUSS) of Pavia. He has published more than 200 papers and is co-author of the book “Seismic Design and Retrofit of Bridges”, that is considered a standard text on the subject, has been involved in important construction projects worldwide, such as the Rion Bridge in Greece and the upgrading of the Bolu Viaduct in Turkey, and is coordinating several international research projects. M.J.Kowalsky Mervyn Kowalsky is Associate Professor of Structural Engineering in the Department of Civil, Construction, and Environmental Engineering at North Carolina State University and a member of the faculty of the ROSE School. His research, which has largely focused on the seismic behaviour of structures, has been supported by the National Science Foundation, the North Carolina and Alaska Departments of Transportation, and several industrial organizations. He is a registered Professional Engineer in North Carolina and an active member of several national and international committees on Performance-Based Seismic Design.
Author: Federico Mazzolani Publisher: CRC Press ISBN: 1439859418 Category : Technology & Engineering Languages : en Pages : 1667
Book Description
Behaviour of Steel Structures in Seismic Areas comprises the latest progress in both theoretical and experimental research on the behaviour of steel structures in seismic areas. The book presents the most recent trends in the field of steel structures in seismic areas, with particular reference to the utilisation of multi-level performance bas
Author: Emily Jacobsen
Author: Emily Jacobsen
Author: Carlo Andrea Castiglioni
Author: 
Author: Hummel, Johannes
Author: Federico M. Mazzolani
Author: Federal Emergency Agency
Author: 
Author: George A. Papagiannopoulos
Author: M. J. N. Priestley
Author: Federico Mazzolani