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Blast Loading Of Concrete Beams Reinforced With High Strength Deformed Bars
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Book Synopsis Blast Loading of Concrete Beams Reinforced with High-strength Deformed Bars by : William A. Keenan
Download or read book Blast Loading of Concrete Beams Reinforced with High-strength Deformed Bars written by William A. Keenan and published by . This book was released on 1963 with total page 106 pages. Available in PDF, EPUB and Kindle. Book excerpt: Equations for the static collapse deflection and the maximum dynamic deflection of a uniformly loaded concrete beam are presented.
Book Synopsis Blast Performance of Reiforced Concrete Beams Constructed with High-Strength Concrete and High-Strength Reinforcement by : Yang Li
Download or read book Blast Performance of Reiforced Concrete Beams Constructed with High-Strength Concrete and High-Strength Reinforcement written by Yang Li and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis focuses on the dynamic and static behaviour of reinforced concrete beams built using high-strength concrete and high-strength steel reinforcement. As part of this study, a total of 8 high-strength concrete beams, built with and without steel fibres, and reinforced with high strength ASTM A1035 bars are tested under simulated blast loading using the University of Ottawa shock-tube, with an additional 3 companion beams tested under quasi-static loading. The variables considered in this study include: concrete type, fibre content, steel reinforcement ratio and steel reinforcement type. The behaviour of the beams with high-strength steel bars is compared to a companion set of beams reinforced with conventional steel reinforcement. The criteria used to evaluate the blast performance of the beams includes: overall blast capacity, maximum and residual displacements, secondary fragmentation and crack control. The dynamic results show that high strength concrete beams reinforced with high-strength steel are able to resist higher blast loads and reduce displacements when compared to companion beams with conventional steel reinforcement. The results also demonstrate that the addition of steel fibres is effective in controlling crack formation, minimizing secondary blast fragments, reducing displacements and further increasing overall blast capacity. However, the use of high-strength steel and high-strength concrete also shows potential for brittle failures under extreme blast pressures. The static results show that specimens with high-strength steel bars do not increase beam stiffness, but significantly increase peak load carrying capacity when compared to beams with the same ratio of conventional steel reinforcement. The analytical research program aims at predicting the response of the test beams using dynamic inelastic single-degree-of-freedom (SDOF) analysis and includes a sensitivity analysis examining the effect of various modelling parameters on the response predictions. Overall the analytical results demonstrate that SDOF analysis can be used to predict the blast response of beams built with high-strength concrete and steel reinforcement with acceptable accuracy.
Download or read book Technical Report written by and published by . This book was released on 1962 with total page 660 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Blast Performance of Ultra-High Performance Concrete Beams Tested Under Shock-Tube Induced Loads by : Corey Guertin-Normoyle
Download or read book Blast Performance of Ultra-High Performance Concrete Beams Tested Under Shock-Tube Induced Loads written by Corey Guertin-Normoyle and published by . This book was released on 2018 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Modern day structures are reaching higher, spanning longer and undergoing new design methods. In addition to regular loads, it is becoming increasingly important to consider the potential risks of intentional and accidental explosions on structures. In the case of reinforced concrete buildings, critical elements such as beams and columns must de designed with sufficient strength and ductility to mitigate against the effects of blast loads to safekeep the public and prevent progressive structural collapse. Recent advancements in structural materials have led to the development of ultra-high-performance concrete (UHPC) with high compressive strength, tensile resistance, toughness and energy absorption capacity, properties which are ideal for blast protection of structures. Combining UHPC with high-performance steels, such as and high strength reinforcement is another potential solution to enhance the blast resilience of structures. This experimental and analytical research program investigates the advantages of combining high performance materials to increase the blast capacity of reinforced concrete beams. The experimental program includes tests on 21 beam specimens, fourteen of which are subjected to extreme blast loading using the University of Ottawa shock-tube, with seven companion specimens tested statically. Parameters investigated include: effect of concrete type (NSC vs. UHPC), effect of steel reinforcement type (NSR vs. HSR), effect of longitudinal reinforcement ratio, effect of fiber type/content and effect of transverse reinforcement on structural performance under static and dynamic loads. The experimental study includes three series having specified material combinations as follows: series 1 (NSC & NSR), series 2 (UHPC & NSR) and series 3 (UHPC & HSR). Each dynamically tested beam specimen is subjected to gradually increasing blast shockwaves until reaching failure. Performance assessment criteria included; maximum and residual displacements, overall blast resistance and resistance to secondary fragmentation. Results show that the specimens detailed with UHPC can resist greater blast loads with reduced mid-span displacement and debris generation when compared to beams built with conventional concrete. The combination of UHPC and high strength reinforcement further enhances blast performance and delays failure as both high strength materials balance themselves for optimum efficiency. Similarly, for specimens subjected to static loading, the use of UHPC increased the maximum load resisted by the beams, although failure mode alters from concrete crushing to rebar rupture. The combination of UHPC and high strength reinforcement further heightens beam resistance, at the expense of reduced specimen ductility. The analytical component of this thesis presents an analysis program called UO Resistance which is capable of predicting structural element resistance curves and conducting a dynamic inelastic single degree of freedom (SDOF) analysis of members subjected to blast loads. Resistance curves generated using UO Resistance were compared to data obtained through static testing and were found to effectively predict specimen response. Similarly, dynamic analysis methods implemented in UO Resistance prove to be effective at predicting specimen response under blast load. Additionally, a sensitivity analysis was performed to evaluate the effect of various modeling parameters on the static and SDOF dynamic predictions of specimen response.
Download or read book Nuclear Science Abstracts written by and published by . This book was released on 1963 with total page 2228 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis An Investigation of High-strength, Deformed Steel Bars for Concrete Reinforcement by : Sidney Aaron Guralnik
Download or read book An Investigation of High-strength, Deformed Steel Bars for Concrete Reinforcement written by Sidney Aaron Guralnik and published by . This book was released on 1957 with total page 268 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ten restrained Tee-beams were tested to destruction.
Download or read book Technical Abstract Bulletin written by and published by . This book was released on with total page 908 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis U.S. Government Research Reports by :
Download or read book U.S. Government Research Reports written by and published by . This book was released on 1963 with total page 254 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Tests of Reinforced Concrete Beams by : John William Buchanan
Download or read book Tests of Reinforced Concrete Beams written by John William Buchanan and published by . This book was released on 1906 with total page 228 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :Columbia University. Department of Civil Engineering. Research Laboratories Publisher : ISBN 13 : Total Pages :64 pages Book Rating :4.M/5 ( download)
Book Synopsis Comparative Tests of Concrete Beams Reinforced with Istog and Hot-rolled Deformed Bars; Conduction for the Concrete Reinforcing Steel Institute Chicago, Illinois by : Columbia University. Department of Civil Engineering. Research Laboratories
Download or read book Comparative Tests of Concrete Beams Reinforced with Istog and Hot-rolled Deformed Bars; Conduction for the Concrete Reinforcing Steel Institute Chicago, Illinois written by Columbia University. Department of Civil Engineering. Research Laboratories and published by . This book was released on 1941 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Guide to Technical Documents by : Naval Civil Engineering Laboratory (Port Hueneme, Calif.)
Download or read book Guide to Technical Documents written by Naval Civil Engineering Laboratory (Port Hueneme, Calif.) and published by . This book was released on 1974 with total page 374 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Ultimate Load Design of Continuous Concrete Beams by : Derrick Beckett
Download or read book The Ultimate Load Design of Continuous Concrete Beams written by Derrick Beckett and published by . This book was released on 1968 with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Performance of Steel Fiber-Reinforced Concrete Beams Under Shock Tube Induced Blast Loading by : Steve Castonguay
Download or read book Performance of Steel Fiber-Reinforced Concrete Beams Under Shock Tube Induced Blast Loading written by Steve Castonguay and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis focuses on the dynamic and static behavior of steel fiber-reinforced concrete (SRFC) beams. As part of this study a total of eighteen (18) beams are tested, including fourteen (14) SFRC beams, and a companion set of four (4) beams built without fibers. Seven (7) of the beams are tested under quasi-static (slowly applied) loading with the remaining eleven (11) beams tested under simulated blast loading using the University of Ottawa shock-tube. The variables considered in this study include: concrete type (SFRC vs. conventional concrete), fiber content, fiber type, as well as the effect of transverse reinforcement. The criteria used to evaluate the blast performance of the beams includes: overall blast capacity, maximum and residual mid-span displacement, secondary fragmentation and damage control. Static results confirm the beneficial effect of fibers on improving the shear and flexural capacity of beams. Dynamic results show that use of steel fibers at a sufficient content can increase shear capacity and effectively replace transverse reinforcement in beams tested under blast loads. The results also show that increasing fiber content can improve the blast response of the beams by reducing maximum and residual mid-span displacement, improving damage tolerance and minimizing secondary blast fragments. However, at high fiber contents, problems with workability of the concrete mix can occur, resulting in a reduction of improvements when compared to SFRC specimens with lower fiber content. The analytical research program aimed at predicting the response of the test beams using dynamic inelastic single-degree-of-freedom (SDOF) analysis. Overall the analytical results demonstrate that SDOF analysis can be used to predict the blast response of beams built with SFRC.
Book Synopsis Tests of Heavily Reinforced Concrete Slab Beams by : Willis Appleford Slater
Download or read book Tests of Heavily Reinforced Concrete Slab Beams written by Willis Appleford Slater and published by . This book was released on 1923 with total page 54 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Recommended Long-range Research Program for Blast-loaded Structures by : Eugene Franklin Smith
Download or read book Recommended Long-range Research Program for Blast-loaded Structures written by Eugene Franklin Smith and published by . This book was released on 1966 with total page 78 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Effects of High Intensity Impulse Loading on Reinforced Concrete Beams by : J. Nelson Ingram
Download or read book The Effects of High Intensity Impulse Loading on Reinforced Concrete Beams written by J. Nelson Ingram and published by . This book was released on 1976 with total page 290 pages. Available in PDF, EPUB and Kindle. Book excerpt: Results of a study of the response of impulse loaded reinforced concrete beams are presented. The objectives were to develop basic data of the blast-structural response phenomenon for the evaluation of structural survivability, and to compare these data with results of digital computer program, IMPBC, a simulation of the blast-structure interaction. The study included the definition of failure and a method for assessing damage due to blast loading. The reinforced concrete beams were full-sized representations of members found in buildings. There were twelve impulse tests, of which seven were performed on identical beams for which the material properties and steel percentage were typical of average construction practice. The remaining five were of beams having high strength concrete (two tests), high strength steel (one test), and greater steel percentage (two tests). Impulse loading was obtained from the detonation of 214-pound spherical pentolite charges suspended above the beams. The high strength concrete beams exhibited the greatest resistance to damage from impulse loading. These members experienced little distress while the members with increased steel area and greater moment capacity suffered the greater damage. This was predicted by the damage criterion presented in this report.
Book Synopsis Resistance of Reinforced Concrete Structures Under High Intensity Loads by : Theodor Krauthammer
Download or read book Resistance of Reinforced Concrete Structures Under High Intensity Loads written by Theodor Krauthammer and published by . This book was released on 1979 with total page 264 pages. Available in PDF, EPUB and Kindle. Book excerpt:
