Download or read book Dynamic Increase Factors for Steel Reinforcing Bars written by and published by . This book was released on 1998 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt: For reinforced concrete structures subjected to blast effects, response at very high strain rates (up to 1000 s-1) is often sought. At these high strain rates, the reinforcing bars yield stress can increase by 100%, or more, depending on the grade of steel used. The dynamic increase factor (DIF), i.e. the ratio of the dynamic to static value, is normally reported as function of strain rate. Knowledge of the DIF is of significant importance in the design and analysis of structures for explosives safety. DIF curves for both yield and ultimate strengths have been derived and published in manuals by the Tri-Services, the Defense Special Weapons Agency, the Air Force, and the Department of Energy. However, these curves are typically based on limited data, and even on data from steel bars of a different grade. A literature review of the effects of high strain rates on the properties of steel reinforcing bars (rebars) was conducted. Static and dynamic properties were gathered for bars satisfying ASTM A615, A15, A432, A431, and A706, with yield stresses ranging from 42 to 103 ksi (290 to 710 MPa). The data indicates that the DIF decreases for higher rebar yield stress, and that the DIF is higher for yield stress than for ultimate stress. A simple relationship is proposed that gives the DIF (for both yield and ultimate stress) as a function of strain rate and yield stress.
Download or read book Dynamic Increase Factors for Concrete written by and published by . This book was released on 1998 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt: For reinforced concrete structures subjected to blast effects, response at very high strain rates (up to 1000 s( -1)) is often sought. At these high strain rates, the apparent strength of concrete can increase significantly. The dynamic increase factor (DIF), i.e. the ratio of the dynamic to static strength, is normally reported as function of strain rate. For concrete, the DIF can be more than 2 in compression, and more than 6 in tension. Knowledge of the DIF is of significant importance in the design and analysis of structures for explosives safety. DIF curves for concrete have been published in manuals by the Tri-Services, the Defense Special Weapons Agency, the Air Force, and the Department of Energy. However, these curves are typically based on limited data. A literature review was conducted to determine the extant data to characterize the effects of strain rate on the compressive and tensile strengths of concrete. This data support the dynamic increase factor (DIF) being a bilinear function of the strain rate in a log-log plot. The DIF formulation recommended by the European CEB was described, together with its origins. For tension, it was found that the data differed somewhat from the CEB recommendations, mostly for strain rates beyond 1 s( -1), and an alternate formulation was proposed based on the experimental data.
Download or read book Blast Effects on Buildings written by Geoffrey Mays and published by Thomas Telford. This book was released on 1995 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt: This guide is aimed at all engineers and architects involved in building design, focusing on the importance of constructing buildings which minimise damage to people and property in the event of an explosion.
Download or read book Rock Dynamics and Applications 3 written by Charlie C. Li and published by CRC Press. This book was released on 2018-06-18 with total page 1146 pages. Available in PDF, EPUB and Kindle. Book excerpt: Rock Dynamics – Experiments, Theories and Applications is a collection of scientific and technical papers presented at the Third International Conference on Rock Dynamics and Applications (RocDyn-3, Trondheim, Norway, 26-27 June 2018). The papers in the book reflect the recent developments in experiment and theory as well as engineering applications of rock dynamics. Rock dynamics studies the response of rock and rock masses under dynamic loading and during the state transition from static loading to kinetic movement. It also includes the study of engineering countermeasures to dynamic instability of rock and rock masses. The topics in the book include: - Dynamic theories - Numerical simulation - Propagation of stress waves - Dynamic tests of rock - Stability of underground openings under dynamic loading - Rockburst - Seismic monitoring - Dynamic rock support - Blasting - Earthquake-related rock structure damage, etc. Applications, such as rockburst, dynamic rock support, seismic monitoring, blasting and earthquake-related rock structure damage, are paid special attention in Rock Dynamics – Experiments, Theories and Applications. The papers, from specialists both from mining and tunnelling branches, discuss commonly interested dynamic issues. Their experience and knowledge in the application of rock dynamics are extremely valuable for all academics, engineers and professionals who work with rock dynamics.
Download or read book Handbook for Blast Resistant Design of Buildings written by Donald O. Dusenberry and published by John Wiley & Sons. This book was released on 2010-01-26 with total page 513 pages. Available in PDF, EPUB and Kindle. Book excerpt: Unique single reference supports functional and cost-efficient designs of blast resistant buildings Now there's a single reference to which architects, designers, and engineers can turn for guidance on all the key elements of the design of blast resistant buildings that satisfy the new ASCE Standard for Blast Protection of Buildings as well as other ASCE, ACI, and AISC codes. The Handbook for Blast Resistant Design of Buildings features contributions from some of the most knowledgeable and experienced consultants and researchers in blast resistant design. This handbook is organized into four parts: Part 1, Design Considerations, sets forth basic principles, examining general considerations in the design process; risk analysis and reduction; criteria for acceptable performance; materials performance under the extraordinary blast environment; and performance verification for technologies and solution methodologies. Part 2, Blast Phenomena and Loading, describes the explosion environment, loading functions needed for blast response analysis, and fragmentation and associated methods for effects analysis. Part 3, System Analysis and Design, explains the analysis and design considerations for structural, building envelope, component space, site perimeter, and building system designs. Part 4, Blast Resistant Detailing, addresses the use of concrete, steel, and masonry in new designs as well as retrofitting existing structures. As the demand for blast resistant buildings continues to grow, readers can turn to the Handbook for Blast Resistant Design of Buildings, a unique single source of information, to support competent, functional, and cost-efficient designs.
Download or read book Process Safety Calculations written by Renato Benintendi and published by Elsevier. This book was released on 2021-03-02 with total page 900 pages. Available in PDF, EPUB and Kindle. Book excerpt: Process Safety Calculations, Second Edition remains to be an essential guide for students and practitioners in process safety engineering who are working on calculating and predicting risks and consequences. The book focuses on calculation procedures based on basic chemistry, thermodynamics, fluid dynamics, conservation equations, kinetics and practical models. It provides helpful calculations to demonstrate compliance with regulations and standards, such as Seveso directive(s)/COMAH, CLP regulation, ATEX directives, PED directives, REACH regulation, OSHA/NIOSH and UK ALARP, along with risk and consequence assessment, stoichiometry, thermodynamics, stress analysis and fluid-dynamics. This fully revised, updated and expanded second edition follows the same organization as the first, including the original three main parts, Fundamentals, Consequence Assessment and Quantitative Risk Assessment. However, the latter part is significantly expanded, including an appendix consisting of five fundamental thematic areas belonging to the risk assessment framework, including in-depth calculations methodologies for some fundamental monothematic macro-areas of process safety. Revised, updated and expanded new edition that includes newly developing areas of process safety that are relevant to QRA Provides engineering fundamentals to enable readers to properly approach the subject of process safety Includes a remarkable and broad numbers of calculation examples, which are completely resolved and fully explained Develops the QRA subject, consistently with the methodology applied in the big projects
Download or read book Insights and Innovations in Structural Engineering Mechanics and Computation written by Alphose Zingoni and published by CRC Press. This book was released on 2016-11-25 with total page 3395 pages. Available in PDF, EPUB and Kindle. Book excerpt: Insights and Innovations in Structural Engineering, Mechanics and Computation comprises 360 papers that were presented at the Sixth International Conference on Structural Engineering, Mechanics and Computation (SEMC 2016, Cape Town, South Africa, 5-7 September 2016). The papers reflect the broad scope of the SEMC conferences, and cover a wide range of engineering structures (buildings, bridges, towers, roofs, foundations, offshore structures, tunnels, dams, vessels, vehicles and machinery) and engineering materials (steel, aluminium, concrete, masonry, timber, glass, polymers, composites, laminates, smart materials). Some contributions present the latest insights and new understanding on (i) the mechanics of structures and systems (dynamics, vibration, seismic response, instability, buckling, soil-structure interaction), and (ii) the mechanics of materials and fluids (elasticity, plasticity, fluid-structure interaction, flow through porous media, biomechanics, fracture, fatigue, bond, creep, shrinkage). Other contributions report on (iii) recent advances in computational modelling and testing (numerical simulations, finite-element modeling, experimental testing), and (iv) developments and innovations in structural engineering (planning, analysis, design, construction, assembly, maintenance, repair and retrofitting of structures). Insights and Innovations in Structural Engineering, Mechanics and Computation is particularly of interest to civil, structural, mechanical, marine and aerospace engineers. Researchers, developers, practitioners and academics in these disciplines will find the content useful. Short versions of the papers, intended to be concise but self-contained summaries of the full papers, are collected in the book, while the full versions of the papers are on the accompanying CD.
Download or read book fib Model Code for Concrete Structures 2010 written by fib - federation internationale du beton and published by John Wiley & Sons. This book was released on 2013-12-04 with total page 434 pages. Available in PDF, EPUB and Kindle. Book excerpt: The International Federation for Structural Concrete (fib) is a pre-normative organization. 'Pre-normative' implies pioneering work in codification. This work has now been realized with the fib Model Code 2010. The objectives of the fib Model Code 2010 are to serve as a basis for future codes for concrete structures, and present new developments with regard to concrete structures, structural materials and new ideas in order to achieve optimum behaviour. The fib Model Code 2010 is now the most comprehensive code on concrete structures, including their complete life cycle: conceptual design, dimensioning, construction, conservation and dismantlement. It is expected to become an important document for both national and international code committees, practitioners and researchers. The fib Model Code 2010 was produced during the last ten years through an exceptional effort by Joost Walraven (Convener; Delft University of Technology, The Netherlands), Agnieszka Bigaj-van Vliet (Technical Secretary; TNO Built Environment and Geosciences, The Netherlands) as well as experts out of 44 countries from five continents.
Download or read book Modern Protective Structures written by Theodor Krauthammer and published by CRC Press. This book was released on 2008-02-01 with total page 530 pages. Available in PDF, EPUB and Kindle. Book excerpt: In today's world, reasonably predictable military operations have been replaced by low intensity conflicts-less predictable terrorist activities carried out by determined individuals or small groups that possess a wide range of backgrounds and capabilities. Because of the threats posed by this evolving type of warfare, civil engineers and emergency
Download or read book Ground Support Technology for Highly Stressed Excavations written by Ernesto Villaescusa and published by CRC Press. This book was released on 2023-04-21 with total page 442 pages. Available in PDF, EPUB and Kindle. Book excerpt: The performance of ground support as a scheme is essential to constrain failures occurring at the rock surfaces of deep or highly stressed excavations. This book covers laboratory and theoretical developments coupled with field experiments and observations with the implementation of the methodology at mines. It explains the energy dissipation capabilities of reinforcement and support systems leading to the design of complete ground support schemes that can maintain integrity following the dynamic ejection of a mass of rock from an excavation boundary. The key features of the book are as follows: It explores the mechanics, demand and capacity of ground support technology It covers the whole gamut of theories, laboratory and field test results and case studies related to ground support technology It includes a comprehensive database of mesh, rock bolts, cable bolts and shotcrete capacity It examines ground support scheme testing and explanation It discusses comprehensive case studies, including de-stress blasting This book is aimed at professionals in mining engineering, including civil engineering, geological engineering and geotechnical engineering, and related advanced postgraduate studies.
Download or read book The Second Half Century of Rock Mechanics Three Volume Set written by Luis Ribeiro e Sousa and published by CRC Press. This book was released on 2007-08-05 with total page 1356 pages. Available in PDF, EPUB and Kindle. Book excerpt: Forty one years ago, the International Society for Rock Mechanics (ISRM) held its 1st International Congress in Lisbon, Portugal. In July 2007, the 11th ISRM Congress returned to Lisbon, where the Portuguese Geotechnical Society (SPG), the Portuguese National Group of the ISRM, hosted the meeting. The Second Half Century of Rock Mechanics comprises
Download or read book 18th International Probabilistic Workshop written by José C. Matos and published by Springer Nature. This book was released on 2021-05-07 with total page 855 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume presents the proceedings of the 18th International Probabilistic Workshop (IPW), which was held in Guimarães, Portugal in May 2021. Probabilistic methods are currently of crucial importance for research and developments in the field of engineering, which face challenges presented by new materials and technologies and rapidly changing societal needs and values. Contemporary needs related to, for example, performance-based design, service-life design, life-cycle analysis, product optimization, assessment of existing structures and structural robustness give rise to new developments as well as accurate and practically applicable probabilistic and statistical engineering methods to support these developments. These proceedings are a valuable resource for anyone interested in contemporary developments in the field of probabilistic engineering applications.
Download or read book Multi layer Pavement System under Blast Load written by Jun Wu and published by Springer. This book was released on 2017-12-27 with total page 241 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book proposes the concept of a multi-layer pavement system to fulfill the blast resistance requirement for pavement design. It also presents a damage pattern chart for multi-layer pavement design and rapid repair after blast load. Such a multi-layer system consists of three layers including asphalt concrete (AC) reinforced with Geogrid (GST) at the top, a high-strength concrete (HSC) layer in the middle, and engineered cementitious composites (ECC) at the bottom. A series of large-scale laboratory impact tests were carried out to prove the usefulness of this concept and show its advantages over other conventional pavement system. Furthermore, field blast tests were conducted to show the actual behavior of this multi-layer pavement system subjected to blast load under real-world conditions.
Download or read book Recent Developments in Structural Engineering Volume 1 written by Manmohan Dass Goel and published by Springer Nature. This book was released on with total page 667 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Experimental Mechanics and Effects of Intensive Loading written by Lin Wang and published by Trans Tech Publications Ltd. This book was released on 2015-08-06 with total page 368 pages. Available in PDF, EPUB and Kindle. Book excerpt: Collection of selected, peer reviewed papers from the 2014 SEM Fall Conference and International Symposium on Intensive Loading and Its Effects, October 19-22, 2014, Beijing, China. The 46 papers are grouped as follows: Chapter 1: Plenary and Invited Talks; Chapter 2: Mechanical Properties of Materials; Chapter 3: Materials and Structures under Extreme Loading Conditions; Chapter 4: Computational Experiments and Simulation; Chapter 5: Advanced Diagnostic and Measurement Methods
Download or read book Structural and Mechanical Engineering for Security and Prevention written by Lucia Figuli and published by Trans Tech Publications Ltd. This book was released on 2017-09-14 with total page 402 pages. Available in PDF, EPUB and Kindle. Book excerpt: The International Conference on Structural and Mechanical Engineering for Security and Prevention (ICSMESP 2017, 14 16 June, 2017, Prague, Czech Republic) was a forum for researchers in all related engineering areas connected to the security, reliability and prevention of the various technogenic incidents. The topics of this collection include new materials for safety and security engineering; diagnosing and testing of materials; modelling and experiments; security technology of explosives; critical infrastructure protection; construction safety and security; risk analysis, assessment and management; emergency and crisis management; new standards on security engineering; rock and mining engineering; blast protection; seismity and geomechanics; fire engineering.
Download or read book Highway Bridge under Collision and Explosion written by Hao Wu and published by Springer Nature. This book was released on with total page 744 pages. Available in PDF, EPUB and Kindle. Book excerpt:
