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Blast Resistant Highway Bridges
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Book Synopsis Blast-resistant Highway Bridges by : Eric B. Williamson
Download or read book Blast-resistant Highway Bridges written by Eric B. Williamson and published by Transportation Research Board. This book was released on 2010 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt: Explores code-ready language containing general design guidance and a simplified design procedure for blast-resistant reinforced concrete bridge columns. The report also examines the results of experimental blast tests and analytical research on reinforced concrete bridge columns designed to investigate the effectiveness of a variety of different design techniques.
Book Synopsis Blast-resistant Design of Highway Bridge Columns by : Carrie Elaine Holland
Download or read book Blast-resistant Design of Highway Bridge Columns written by Carrie Elaine Holland and published by . This book was released on 2008 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Highway Bridge under Collision and Explosion by : Hao Wu
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:
Book Synopsis Application of Multi-hazard Seismic-blast Detailing for Highway Bridges by : Dominique Morton Torres
Download or read book Application of Multi-hazard Seismic-blast Detailing for Highway Bridges written by Dominique Morton Torres and published by . This book was released on 2013 with total page 154 pages. Available in PDF, EPUB and Kindle. Book excerpt: The increase of worldwide terrorist attacks on public transportation has heightened our concerns of protecting the nation’s transportation infrastructure. Highway bridges are an attractive target for terrorist attacks due to ease of accessibility and their overall importance to society. The primary objective of this research is to investigate multi-hazard seismic-blast correlations of blast-induced bridge components through numerical simulations of a high-precision finite element model of a typical highway bridge in New York. Seismic-detailing for blast loading on bridges has been investigated to study the correlations between seismic design for blast load effects. High-precision 3D Finite Element models of bridges detailed for blast-resistant applications have been developed by designing the bridges for various seismic zones. In total, 9 cases of simulations for blast-induced bridges have been simulated. From the simulations, four failure mechanisms were observed and have been identified. Results from the simulation suggest that bridges detailed with higher seismic capacities were able to resist more blasted-induced failure mechanisms. The amount and location of transverse reinforcement in bridge columns played a significant role for better blast resistance. Although, there are several failure mechanisms that arise from blast loadings that do not take place in seismic conditions.
Book Synopsis Blast and Seismic Resistant Concrete-filled Double Skin Tubes and Modified Steel Jacketed Bridge Columns by : Pierre P. Fouche
Download or read book Blast and Seismic Resistant Concrete-filled Double Skin Tubes and Modified Steel Jacketed Bridge Columns written by Pierre P. Fouche and published by . This book was released on 2014 with total page 483 pages. Available in PDF, EPUB and Kindle. Book excerpt: A proposed paradigm in engineering of bridges prone to the effects of multiple hazards calls for designing and detailing new bridges, as well as retrofitting existing bridges, so that an integrated structural concept provides protection against all credible hazards. This multi-hazard approach is believed to lead to structural systems that are optimal and offer a more uniform level of safety against various credible relevant hazard scenarios. Toward this objective, research was conducted to develop and experimentally validate two proposed structural concepts capable of achieving the objective of multiple hazard protection for highway bridges, namely Concrete Filled Double Skin Tube (CFDST) and Modified Steel Jacketed Columns (MSJC). CFDST is proposed as seismic and blast resistant column for new bridge multi-column bent. MSJC, on the other hand, is a "retrofit-of-the-retrofit" concept which adds blast protection to the capability of Steel Jacketed Column (SJC) already known to provide seismic resistance. Performance of CFDST is investigated both under cyclic pushover and blast tests whereas MSJC is tested under blast loading only using ℗ơ scale column prototypes. The energy dissipation of CFDST under cyclic loading was found to be excellent. Under credible blast scenario, CFDST deform in bending without significant loss in capacity to carry load. For near-contact explosion, another energy dissipation mechanism is engaged in the form of cross-section deformation. In both credible and near contact blast explosion, MSCJ is found to be able to develop large flexural deformations which are not achievable with non-modified SJC that are usually prone to direct shear failure. Equations are also presented to help designer predict the behavior of CFDST under blast and earthquake loads.^Comparison to the experimental data generated in this research as well to data available in the literature shows that those analytical results are accurate, and in some instances conservative.
Download or read book UTRC Report written by Anil Kumar Agrawal and published by . This book was released on 2009 with total page 204 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Design of Highway Bridges for Extreme Events by : Michel Ghosn
Download or read book Design of Highway Bridges for Extreme Events written by Michel Ghosn and published by Transportation Research Board. This book was released on 2003 with total page 183 pages. Available in PDF, EPUB and Kindle. Book excerpt: Chapter 1. Introduction -- Chapter 2. Reliability models for combinations of extreme events -- Chapter 3. Calibration of load factors for combinations of extreme events -- Chapter 4. Conclusions and future research -- References -- Glossary of notations -- Appendixes.
Book Synopsis Development of Simplified Dynamic Response Models for Blast-loaded Bridge Components by : Eric Louis Sammarco
Download or read book Development of Simplified Dynamic Response Models for Blast-loaded Bridge Components written by Eric Louis Sammarco and published by . This book was released on 2014 with total page 790 pages. Available in PDF, EPUB and Kindle. Book excerpt: International terrorist organizations have been active across the globe for decades, but attacks against public surface transportation infrastructure constitute a recent trend. Statistical data from past attacks, along with numerous threats received by United States (U.S.) Government authorities, support this claim and render U.S. transportation infrastructure security a national concern. Public highway bridges can be particularly vulnerable to a malevolent attack due predominately to their public accessibility and exposed nature. Furthermore, the sudden failure of a highway bridge located on a major transportation corridor has the potential to cause significant economic loss, human casualties, and societal distress. Motivated by the recent trend of increasing worldwide attacks and identified vulnerabilities associated with public highway bridges, considerable research in the area of bridge security has been carried out over the past decade. While much research is still needed, it is important to begin transitioning the existing knowledge and technology to the appropriate users within the bridge analysis and design community. Accordingly, the main objective of the research described in this dissertation is to facilitate this transition and advance the state of-the-practice in bridge-specific protective analysis and design by developing accurate yet fast-running dynamic response models for reinforced concrete (RC) bridge columns and tower panels subjected to blast loads. Given a threat scenario and bridge component of interest, the RC component response models characterize demand on a selected component and provide an estimate of peak dynamic response and incurred damage. Such fast-running, engineering-level models provide practicing bridge engineers with the ability to readily assess the performance of blast-loaded bridge components without having to rely on time-consuming, costly, and complex resources such as physical testing or high-fidelity finite element simulations. The proposed dynamic response models are also capable of facilitating anti-terrorist/force protection (ATFP) retrofits and rapid in-situ vulnerability assessments of existing bridge components, as well as safe designs of new bridge components. As part of a larger research effort that was chiefly managed by the author of this dissertation, the RC component response models were integrated with similar models for steel bridge towers and high-strength steel cable components to form a comprehensive, component-level vulnerability assessment software for blast-loaded bridges. Therefore, the results of this research synthesize the state-of- the-art in blast-resistant bridge analysis/design and put forth a practical, engineering-level tool to aid in the growing concern of domestic transportation infrastructure security. This contribution to the structural engineering community marks a step towards enhanced resiliency of existing and future U.S. highway bridges.
Book Synopsis Multi-hazard Resistant Highway Bridge Piers by : Shuichi Fujikura
Download or read book Multi-hazard Resistant Highway Bridge Piers written by Shuichi Fujikura and published by . This book was released on 2008 with total page 473 pages. Available in PDF, EPUB and Kindle. Book excerpt: It is found that prototype bridge CFST columns can be designed to provide both satisfactory seismic performance and adequate blast resistance. It is also shown that, in two series of tests at 1/4 scale, the CFST columns exhibited ductile behavior while the RC and steel jacketed columns failed at their base in shear. Based on the experimental and analytical observations, simplified analytical methods for the design of bridge columns under explosive loads were proposed.
Book Synopsis Design Against Blast by : S. Syngellakis
Download or read book Design Against Blast written by S. Syngellakis and published by WIT Press. This book was released on 2013 with total page 225 pages. Available in PDF, EPUB and Kindle. Book excerpt: Terrorist attacks and other destructive incidents caused by explosives have, in recent years, prompted considerable research and development into the protection of structures against blast loads. For this objective to be achieved, experiments have been performed and theoretical studies carried out to improve our assessments of the intensity as well as the space-time distribution of the resulting blast pressure on the one hand and the consequences of an explosion to the exposed environment on the other.This book aims to enhance awareness on and understanding of these topical issues through a collection of relevant, Transactions of the Wessex Institute of Technology articles written by experts in the field. The book starts with an overview of key physics-based algorithms for blast and fragment environment characterisation, structural response analyses and structural assessments with reference to a terrorist attack in an urban environment and the management of its inherent uncertainties.A subsequent group of articles is concerned with the accurate definition of blast pressure, which is an essential prerequisite to the reliable assessment of the consequences of an explosion. Other papers are concerned with alternative methods for the determination of blast pressure, based on experimental measurements or neural networks. A final group of articles reports investigations on predicting the response of specific structural entities and their contents.The book concludes with studies on the effectiveness of steel-reinforced polymer in improving the performance of reinforced concrete columns and the failure mechanisms of seamless steel pipes used in nuclear industry.
Book Synopsis Concrete Structures Subjected to Impact and Blast Loadings and Their Combinations by : Chunwei Zhang
Download or read book Concrete Structures Subjected to Impact and Blast Loadings and Their Combinations written by Chunwei Zhang and published by CRC Press. This book was released on 2022-05-08 with total page 421 pages. Available in PDF, EPUB and Kindle. Book excerpt: Although much research focuses on investigating the responses of reinforced concrete (RC) structures under sole impact or blast loads, the responses of RC structures under a combination of impact and blast loads currently represent a gap in our knowledge. The combined actions of impact and blast loadings may be applied to RC structures during accidental or intentional collision of vessels, vehicles, etc., carrying explosive materials. A comprehensive study on the vulnerability of various structural members is carried out using finite element (FE) simulations under combination of impact and blast loads with the variations of various loading- and structural-related parameters and key parameters. This book introduces various structural analysis approaches for concrete structures when subjected to extreme loads such as impact and blast loadings. The theory of the combinations of impact and blast loads is proposed that can provide primary insights to the specific readers to develop new ideas in impact and blast engineering, including combined actions of extreme loads arising from real-world intentional or accidental events. This book will be of value to students (undergraduate or postgraduate), engineers, and researchers in structural and civil engineering, and specifically, those who are studying and investigating the performances of concrete structures under extreme loads.
Book Synopsis Handbook for Blast Resistant Design of Buildings by : Donald O. Dusenberry
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.
Book Synopsis Structures Under Shock and Impact X by : Norman Jones
Download or read book Structures Under Shock and Impact X written by Norman Jones and published by WIT Press. This book was released on 2008 with total page 417 pages. Available in PDF, EPUB and Kindle. Book excerpt: This text examines the interaction between blast pressure and surface or underground structures, whether the blast is from civilian, military, dust and natural explosions, or any other source.
Book Synopsis Influence of Transverse Reinforcement on Bridge Column Resistance Against Blast Loads by : Amir Hossein Kavousifard
Download or read book Influence of Transverse Reinforcement on Bridge Column Resistance Against Blast Loads written by Amir Hossein Kavousifard and published by . This book was released on 2018 with total page 183 pages. Available in PDF, EPUB and Kindle. Book excerpt: After the terrorist attacks of September 11th, 2001, blast load resistance of infrastructure has been of great concern to structural engineers, and government institutions in the United States have provided guidelines to mitigate these risks. The focus of these guidelines has been on buildings, and measures to protect infrastructure such as bridges have not received similar attention. However, data on terrorist attacks show that bridges are often targeted, and the majority of these attacks are on non-landmark bridges, such as highway bridges. With the threat of global terrorism, it is required to understand the behavior of bridges in Canada under blast loads. Specifically, bridge columns are often targeted and they represent a critical structural function as their failure can lead to collapse of the entire bridge. Transverse reinforcement is the key element in design of reinforced concrete (RC) bridge columns against blast, and it is also the key element in design for seismic loads. A generic two-span bridge located in Toronto, Ontario; Vancouver, British Columbia; and Victoria, British Columbia, is designed using the Canadian Highway Bridge Design Code (CHBDC). The three cities are chosen to represent low, high, and extremely high seismic hazard levels, respectively. The bridge columns are designed according to the required seismic detailing of the different hazard levels with a focus on spacing, bar size, and type of transverse reinforcement. The finite element software LS-DYNA is used to model the bridge columns and simulate the application of blast loads at different charge heights for various charge weights and standoff distances. Analysis of the simulation results concentrates on the performance of columns with respect to concrete failure mechanisms, behavior and stress patterns of steel reinforcement, and displacement curves. The results of this study indicate that for equivalent blast loads, a charge closer to the base of the column is more critical than a charge at mid-height. Moreover, charge weight has more of an impact than standoff distance in a columns ability to resist blast. The results also indicate that seismic detailing is extremely important in blast load resistance of columns. Specifically, columns with smaller spacing of transverse reinforcement, as well as bigger bar size, demonstrate an ability to successfully resist blast and allow a column to carry the required structural loads. Moreover, columns with spiral transverse reinforcement perform better than columns with tied transverse reinforcement.
Book Synopsis Design of Highway Bridges by : Richard M. Barker
Download or read book Design of Highway Bridges written by Richard M. Barker and published by John Wiley & Sons. This book was released on 2013-02-04 with total page 1194 pages. Available in PDF, EPUB and Kindle. Book excerpt: Up-to-date coverage of bridge design and analysis revised to reflect the fifth edition of the AASHTO LRFD specifications Design of Highway Bridges, Third Edition offers detailed coverage of engineering basics for the design of short- and medium-span bridges. Revised to conform with the latest fifth edition of the American Association of State Highway and Transportation Officials (AASHTO) LRFD Bridge Design Specifications, it is an excellent engineering resource for both professionals and students. This updated edition has been reorganized throughout, spreading the material into twenty shorter, more focused chapters that make information even easier to find and navigate. It also features: Expanded coverage of computer modeling, calibration of service limit states, rigid method system analysis, and concrete shear Information on key bridge types, selection principles, and aesthetic issues Dozens of worked problems that allow techniques to be applied to real-world problems and design specifications A new color insert of bridge photographs, including examples of historical and aesthetic significance New coverage of the "green" aspects of recycled steel Selected references for further study From gaining a quick familiarity with the AASHTO LRFD specifications to seeking broader guidance on highway bridge design Design of Highway Bridges is the one-stop, ready reference that puts information at your fingertips, while also serving as an excellent study guide and reference for the U.S. Professional Engineering Examination.
Book Synopsis UHPCC Under Impact and Blast by : Qin Fang
Download or read book UHPCC Under Impact and Blast written by Qin Fang and published by Springer Nature. This book was released on 2021-02-22 with total page 504 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is about the Ultra-high Performance Cementitious Composites (UHPCC), which is a relativity new type of cementitious materials. UHPCC has very low water-to-binder ratio, high amount of high-range water reducer, fine aggregates and high-strength steel or organic fibers. With the prominent mechanical properties, e.g., high compressive and tensile strength, high ductility, and high fracture energy, UHPCC has been becoming the most prospective construction cement-based material for both civil and military structures to resist high-speed projectile penetration, low-velocity impact and blast loadings. In this book, the related work conducted by authors on the static and dynamic mechanical properties, as well as the impact and blast resistance of UHPCC are presented. This book is written for the researchers, engineers and graduate students in the fields of protective structures and terminal ballistics.
Book Synopsis Bridge Maintenance, Safety, Management and Life-Cycle Optimization by : Dan Frangopol
Download or read book Bridge Maintenance, Safety, Management and Life-Cycle Optimization written by Dan Frangopol and published by CRC Press. This book was released on 2010-07-07 with total page 738 pages. Available in PDF, EPUB and Kindle. Book excerpt: Bridge Maintenance, Safety, Management and Life-Cycle Optimization contains the lectures and papers presented at IABMAS 2010, the Fifth International Conference of the International Association for Bridge Maintenance and Safety (IABMAS), held in Philadelphia, Pennsylvania, USA from July 11 through 15, 2010.All major aspects of bridge maintenance, s
