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Blast Loading Effect On Buckling Restrained Braced Frames
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Book Synopsis Blast Loading Effect on Buckling Restrained Braced Frames by : Frank Chavarin
Download or read book Blast Loading Effect on Buckling Restrained Braced Frames written by Frank Chavarin and published by . This book was released on 2018 with total page 194 pages. Available in PDF, EPUB and Kindle. Book excerpt: Buckling -restrained braced frames are being used around the world to resist lateral loads on structures. They are used due to their high ductility after yielding and the ability to absorb energy. This paper focuses on blast loading on buckling-restrained braced frames. One archetype is looked at in detailed while only the important components are looked at for a second. The main archetype is the chevron braced frame and the second, is the v-braced frame. The two are subjected to a short duration blast load that last 21.7 ms. They are analyzed while the brace core thickness is increased by half an inch. In conclusion, the brace core thickness played a significant role in reducing deformation. The chevron brace also performed significantly better than the v-braced frame. This was due to the position of the braces which created more out of plane deformation in the v-frame archetype. It also witnesses more x-deformation as well as damage.
Book Synopsis Effects of Blast Loading on Buckling-restrained Braces of a Single- and Two-bay Chevron Frame by : Oshman Charco
Download or read book Effects of Blast Loading on Buckling-restrained Braces of a Single- and Two-bay Chevron Frame written by Oshman Charco and published by . This book was released on 2018 with total page 184 pages. Available in PDF, EPUB and Kindle. Book excerpt: The emerging use of buckling-restrained braced frames (BRBFs) as a seismic force-resisting system and the threat of blast can be catastrophic as the effects can lead to loss of life and failure of the building. Buckling-restrained braces (BRBs) have been researched and investigated under seismic activity. In this research, investigation on how a building with lateral framing system consisting of BRBFs behaves under the impact of blast loading. Particular focus was set on how the behavior of the frame was influenced as the concrete strength was increased in the concrete fill of the BRBs. A single- and two-bay analyses were performed. The study found that the BRBs would start bend as a result of the blast load. This bending would lead to failure in the BRBs as the braces would rupture. The concrete encasing would also become the weakest member as it would fail first due to crushing by the steel brace. The loaded column would fail near the support on the flange and web intersection. A two-bay BRBF schematic was deemed better at resisting the blast load when compared with the single-bay BRBF.
Book Synopsis Behavior of the Structures with Buckling-restrained Brace (BRB) Frame System Under the Blast Loads by : Amir Bahador Ghayoomi
Download or read book Behavior of the Structures with Buckling-restrained Brace (BRB) Frame System Under the Blast Loads written by Amir Bahador Ghayoomi and published by . This book was released on 2019 with total page 95 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the world that we are living today, unfortunately humanity is struggling to live peacefully although seems easy. Nowadays, it is not that challenging for an individual or an organization to have access to explosives that if turn into bombs could resulting lots of damages to the properties and human lives. At the same time, fortunately technological advancements provide knowledge and tools for structural engineers to at least minimize some of the damages by improving their designs. In this thesis, structures with dual lateral force-resisting system (IMF and BRB frames) that are modeled and designed in ETABS have been used. These structures are designed for gravity and seismic loads, and their behaviors under blast loads have been evaluated. Explosives have been placed on the ground (surface burst) with different standoff distances and different amounts of charge and only applied to the front walls. A few methods of applying the blast load on the structures have been tried before by other engineers but in this thesis a new method has been used for applying a time dependent load in ETABS on the structures. Results and conclusions are based on the outcomes from ETABS.
Book Synopsis Bidirectional Loading Behavior of Buckling-restrained Braced Frames by : Joel Craig Sherman
Download or read book Bidirectional Loading Behavior of Buckling-restrained Braced Frames written by Joel Craig Sherman and published by . This book was released on 2009 with total page 330 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Impact of Large Gravity Loads on Buckling Restrained Braced Frame Performance by : Mark Thurgood Matthews
Download or read book Impact of Large Gravity Loads on Buckling Restrained Braced Frame Performance written by Mark Thurgood Matthews and published by . This book was released on 2009 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt: Each structure was modeled with applied ground motion simulations with and without gravity loads, and with gravity loads but no applied ground motion simulations. Results indicate that gravity loads have no significant impact on the overall performance of BRBFs for either structure.
Book Synopsis Blast Effects on Buildings by : Geoffrey Mays
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.
Book Synopsis Advances in Structural Mechanics and Applications by : José António Fonseca de Oliveira Correia
Download or read book Advances in Structural Mechanics and Applications written by José António Fonseca de Oliveira Correia and published by Springer Nature. This book was released on 2022-06-07 with total page 562 pages. Available in PDF, EPUB and Kindle. Book excerpt: The proceedings of the conference is going to benefit the researchers, academicians, students and professionals in getting enlightened on latest technologies on structural mechanics, structure and infrastructure engineering. Further, work on practical applications of developed scientific methodologies to civil structural engineering will make the proceedings more interesting and useful to practicing engineers and structural designers.
Book Synopsis Behaviour of Steel Structures in Seismic Areas by : Federico Mazzolani
Download or read book Behaviour of Steel Structures in Seismic Areas written by Federico Mazzolani and published by CRC Press. This book was released on 2009-12-03 with total page 1667 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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
Book Synopsis Seismic Performance of Buckling Restrained Braced Frames with and Without Manufacturing Defects Subjected to Combined In-plane and Out-of-plane Loading by : Jian Cui
Download or read book Seismic Performance of Buckling Restrained Braced Frames with and Without Manufacturing Defects Subjected to Combined In-plane and Out-of-plane Loading written by Jian Cui and published by . This book was released on 2021 with total page 241 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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 High Performance Computing on Vector Systems 2009 by : Sabine Roller
Download or read book High Performance Computing on Vector Systems 2009 written by Sabine Roller and published by Springer Science & Business Media. This book was released on 2009-10-07 with total page 251 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book covers the results of the Tera op Workbench, other projects related to High Performance Computing, and the usage of HPC installations at HLRS. The Tera op Workbench project is a collaboration between the High Performance C- puting Center Stuttgart (HLRS) and NEC Deutschland GmbH (NEC-HPCE) to s- port users in achieving their research goals using High Performance Computing. The rst stage of the Tera op Workbench project (2004–2008) concentrated on user’s applications and their optimization for the former ag ship of HLRS, a - node NEC SX-8 installation. During this stage, numerous individual codes, dev- oped and maintained by researchers or commercial organizations, have been a- lyzed and optimized. Within the project, several of the codes have shown the ability to outreach the TFlop/s threshold of sustained performance. This created the pos- bility for new science and a deeper understanding of the underlying physics. The second stage of the Tera op Workbench project (2008–2012) focuses on c- rent and future trends of hardware and software developments. We observe a strong tendency to heterogeneous environments on the hardware level, while at the same time, applications become increasingly heterogeneous by including multi-physics or multi-scale effects. The goal of the current studies of the Tera op Workbench is to gain insight in the developments of both components. The overall target is to help scientists to run their application in the most ef cient and most convenient way on the hardware best suited for their purposes.
Book Synopsis Development of Heavy Timber Buckling-restrained Braced Frames by : Douglas R. Rammer
Download or read book Development of Heavy Timber Buckling-restrained Braced Frames written by Douglas R. Rammer and published by . This book was released on 2016 with total page 2 pages. Available in PDF, EPUB and Kindle. Book excerpt: Buckling-restrained braced frames (BRBFs) are one of the newer types of seismic-force-resisting systems used in modern building designs. In BRBFs, the primary source of ductility is the axial yielding of the buckling-restrained brace (BRB) cores, and BRBFs have improved ductility in comparison to ordinary or special braced frames. BRBs are incorporated into frame structures to dissipate energy or prevent damage to the surrounding structures. Frame systems employing this type of BRBs have demonstrated improved ductility and are currently an approved seismic-force-resisting system in the ASCE 7-10 code document (ASCE 2010).
Book Synopsis Improved Seismic Performance of Buckling Restrained Braced Frames by : Adam S. Christopulos
Download or read book Improved Seismic Performance of Buckling Restrained Braced Frames written by Adam S. Christopulos and published by . This book was released on 2005 with total page 612 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Proceedings of the 11th International Conference on Behaviour of Steel Structures in Seismic Areas by : Federico M. Mazzolani
Download or read book Proceedings of the 11th International Conference on Behaviour of Steel Structures in Seismic Areas written by Federico M. Mazzolani and published by Springer Nature. This book was released on with total page 1192 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Buckling Restrained Braced Frames as a Seismic Force Resisting System by : Brandon W. Fuqua
Download or read book Buckling Restrained Braced Frames as a Seismic Force Resisting System written by Brandon W. Fuqua and published by . This book was released on 2009 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The hazards of seismic activity on building structures require that engineers continually look for new and better methods of resisting seismic forces. Buckling restrained braced frames (BRBF) are a relatively new lateral force resisting system developed to resist highly unpredictable seismic forces in a very predictable way. Generally, structures with a more ductile lateral force resisting system perform better in resisting high seismic forces than systems with more rigid, brittle elements. The BRBF is a more ductile frame choice than special concentrically braced frames (SCBF). The ductility is gained through brace yielding in both compression and tension. The balanced hysteretic curve this produces provides consistent brace behavior under extreme seismic loads. However regular use of the BRB is largely limited to Japan where the brace type was first designed. The wide acceptance of buckling restrained braced frames requires the system to become easily designable, perform predictably, and common to engineers. This report explains the design process to help increase knowledge of the design and background. This report also details a comparison of a BRBF to a SCBF to give familiarity and promote confidence in the system. The design process of the BRBF is described in detail with design calculations of an example frame. The design process is from the AISC Seismic Provisions with the seismic loads calculated according to ASCE 7 equivalent lateral force procedure. The final members sizes of the BRBF and SCBF are compared based on forces and members selected. The results of the parametric study are discussed in detail.
Book Synopsis Optimized Distribution of Strength in Buckling-restrained Brace Frames in Tall Buildings by : Graham Thomas Oxborrow
Download or read book Optimized Distribution of Strength in Buckling-restrained Brace Frames in Tall Buildings written by Graham Thomas Oxborrow and published by . This book was released on 2009 with total page 118 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nonlinear time history analysis is increasingly being used in the design of tall steel structures, but member sizes still must be determined by a designer before an analysis can be performed. Often the distribution of story strength is still based on an assumed first mode response as determined from the Equivalent Lateral Force (ELF) procedure. For tall buckling restrained braced frames (BRBFs), two questions remain unanswered: what brace distribution will minimize total brace area, while satisfying story drift and ductility limits, and is the ELF procedure an effective approximation of that distribution? In order to investigate these issues, an optimization algorithm was incorporated into the OpenSees dynamic analysis platform. The resulting program uses a genetic algorithm to determine optimum designs that satisfy prescribed drift/ductility limits during nonlinear time history analyses. The computer program was used to investigate the optimized distribution of brace strength in BRBFs with different heights. The results of the study provide insight into efficient design of tall buildings in high seismic areas and evaluate the effectiveness of the ELF procedure.
Book Synopsis Design of Buckling-restrained Braced Frames Using Nonlinear Time History Analysis and Optimization by : Lukas J. Balling
Download or read book Design of Buckling-restrained Braced Frames Using Nonlinear Time History Analysis and Optimization written by Lukas J. Balling and published by . This book was released on 2007 with total page 78 pages. Available in PDF, EPUB and Kindle. Book excerpt:
