Download or read book Influence of Restraint on Fire Performance of Reinforced Concrete Columns written by National Research Council Canada. Division of Building Research and published by . This book was released on 1985 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Influence of Restraint on Fire Performance of Reinforced Concrete Columns written by Tiam Tjoan Lie and published by . This book was released on 1985 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Evolution of Fire Induced Restraint Forces and Their Effect on the Fire Response of Prestressed Concrete Beams written by Puneet Kumar and published by . This book was released on 2023 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Precast prestressed concrete (PC) construction provides numerous advantages over traditional reinforced concrete (RC) construction, in terms of speed of construction, better quality control, cost-effectiveness, better space utilization, and optimized production. Owing to these advantages, the use of PC construction in the built environment has increased significantly in recent decades. While the structural behavior of PC members is well understood at ambient temperatures, there is a lack of understanding on the evolution of fire induced restraint forces in PC beams and their effect on the fire resistance of PC beams. Further, the fire resistance of PC members is currently evaluated using prescriptive design approaches which do not account for all critical factors governing the fire response of PC beams, including realistic restraint conditions, and therefore, current fire resistance provisions may not provide realistic predictions of fire performance.℗ Therefore, a detailed experimental and numerical study is conducted to evaluate the evolution of fire induced restraint forces and to quantify their effect on the fire response of PC beams. Fire resistance tests were conducted on four PC beams under restrained and unrestrained end conditions. Test variables included fire exposure, restraint conditions, load level, and concrete strength. The fire response of the beams was traced throughout the fire exposure duration by measuring sectional temperatures, beam deflections, and fire induced restraint forces. All four beams were designed as per current building code recommendations to have a fire resistance of 4 hours, however, all four beams attained failure within 2 hours of fire exposure. A numerical model was developed for tracing the fire response of PC beams under specified fire, loading, and restraint conditions. The model accounts for critical factors governing the fire response of PC beams including fire-induced restraint forces, cracking and crushing of concrete, spalling, material and geometric non-linearity, and geometry of the beam. For modeling fire-induced restraint forces a new efficient spring idealization framework for connections is implemented. Also, the cracking and crushing of concrete is captured by developing a new modified adaptive temperature-dependent failure envelope.℗ The developed numerical model was validated by comparing response predictions from the model with measured data in fire tests. Results from these comparisons show that the model can capture the fire response of PC beams with reasonable accuracy in both thermal and structural domains. The validated numerical model is applied to carry out a series of parametric studies on the effect of fire-induced restraint forces on the response of PC beams. The effect of cross-sectional shape, support conditions, the gap in connection, level of prestress, and concrete cover thickness on the evolution of fire induced restraint forces is studied for PC and equivalent RC beams. Results from parametric studies show that current prescriptive codes and standards may over-predict fire resistance of PC beams by as high as 100%, PC beams develop 5% to 20% lower restraint forces than equivalent RC beams, and for PC beams with gaps of more than 50 mm experience minimal restraint forces. Also, the fire-induced restraint forces can be either beneficial or detrimental and can significantly alter the fire response of the PC beam, and therefore, should be included in the design process. Based on the results from the fire tests and parametric studies, simplified recommendations are proposed for evaluating the fire resistance of PC beams.
Download or read book Fire Safety Science and Engineering written by T. Z. Harmathy and published by ASTM International. This book was released on 1985 with total page 443 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fire Performance of Reinforced Concrete Columns written by National Research Council Canada. Division of Building Research and published by . This book was released on 1985 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fire Safety Science written by Cecile Grant and published by CRC Press. This book was released on 1986 with total page 1266 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fire Design of Concrete Structures Structural Behaviour and Assessment written by fib Fédération internationale du béton and published by fib Fédération internationale du béton. This book was released on 2008-01-01 with total page 216 pages. Available in PDF, EPUB and Kindle. Book excerpt: Concrete is well known to behave efficiently in fire conditions, as it is incombustible, does not emit smoke, and provides good thermal insulation. Furthermore, in reinforced concrete structures, the concrete cover gives a natural protection to the reinforcement, and the size of the sections often delays the heating of the core, thus favouring the fire resistance of the structural members. In addition, concrete structures are often robust and therefore able to accommodate local damage without major consequences to the overall structural integrity. However, past experience with real fires shows that a thorough understanding of concrete behaviour and structural mechanics is still needed to improve the design of R/C structures with respect to fire. The objective of fib Bulletin 46 is to augment the current knowledge about concrete and concrete structures under fire, not only for the design of new structures, but also for the analysis and repair of existing fire-damaged structures. Both structural and materials issues are examined, and the results of the most recent research activities on the structural performance of concrete subjected to fire are reported. Special attention is paid to the indirect actions caused by the restrained thermal deformations and several basic examples show how a local fire influences global structural behaviour. fib Bulletin 46 is intended for use by practicing engineers to improve their understanding of the behaviour of concrete structures in fire and thereby produce better and safer design standards.
Download or read book Further Studies of the Fire Resistance of Reinforced Concrete Columns written by and published by . This book was released on 1964 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Computational Modelling of Concrete Structures written by Nenad Bicanic and published by CRC Press. This book was released on 2014-03-04 with total page 1108 pages. Available in PDF, EPUB and Kindle. Book excerpt: The EURO-C conference series (Split 1984, Zell am See 1990, Innsbruck 1994, Badgastein 1998, St Johann im Pongau 2003, Mayrhofen 2006, Schladming 2010, St Anton am Alberg 2014) brings together researchers and practising engineers concerned with theoretical, algorithmic and validation aspects associated with computational simulations of concrete and concrete structures. The conference reviews and discusses research advancements and the applicability and robustness of methods and models for reliable analysis of complex concrete, reinforced concrete and pre-stressed concrete structures in engineering practice. Conference topics and invited papers cover both computational mechanics and computational modelling aspects of the analysis and design of concrete and concrete structures: * Constitutive and Multiscale Modelling of Concrete * Advances in Computational Modelling * Time Dependent and Multiphysics Problems * Performance of Concrete Structures The book is of special interest to researchers in computational concrete mechanics, as well as industry experts in complex nonlinear simulations of concrete structures.
Download or read book Structures in Fire written by Venkatesh Kodur and published by DEStech Publications, Inc. This book was released on 2010 with total page 1047 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fire Resistance of Concrete Columns written by Walter Austin Hull and published by . This book was released on 1925 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fire Resistance of High Strength Concrete Columns Under Axial Restraint written by Lifeng Su and published by . This book was released on 2008 with total page 155 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fire Performance of Reinforced Concrete Columns written by National Research Council Canada. Division of Building Research and published by . This book was released on 1985 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fire Performance of Reinforced Concrete Columns written by Tiam Tjoan Lie and published by . This book was released on 1985 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Hybrid Metaheuristics in Structural Engineering written by Gebrail Bekdaş and published by Springer Nature. This book was released on 2023-06-15 with total page 306 pages. Available in PDF, EPUB and Kindle. Book excerpt: From the start of life, people used their brains to make something better in design in ordinary works. Due to that, metaheuristics are essential to living things, and several inspirations from life have been used in the generation of new algorithms. These algorithms have unique features, but the usage of different features of different algorithms may give more effective optimum results in means of precision in optimum results, computational effort, and convergence. This book is a timely book to summarize the latest developments in the optimization of structural engineering systems covering all classical approaches and new trends including hybrids metaheuristic algorithms. Also, artificial intelligence and machine learning methods are included to predict optimum results by skipping long optimization processes. The main objective of this book is to introduce the fundamentals and current development of methods and their applications in structural engineering.
Download or read book Design of High Strength Steel Reinforced Concrete Columns written by Sing-Ping Chiew and published by CRC Press. This book was released on 2018-04-17 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is the companion volume to Design Examples for High Strength Steel Reinforced Concrete Columns – A Eurocode 4 Approach. Guidance is much needed on the design of high strength steel reinforced concrete (SRC) columns beyond the remit of Eurocode 4. Given the much narrower range of permitted concrete and steel material strengths in comparison to EC2 and EC3, and the better ductility and buckling resistance of SRC columns compared to steel or reinforced concrete, there is a clear need for design beyond the guidelines. This book looks at the design of SRC columns using high strength concrete, high strength structural steel and high strength reinforcing steel materials – columns with concrete cylinder strength up to 90 N/mm2, yield strength of structural steel up to 690 N/mm2 and yield strength of reinforcing steel up to 600 N/mm2 respectively. The companion volume provides detailed worked examples on use of these high strength materials. This book is written primarily for structural engineers and designers who are familiar with basic EC4 design, and should also be useful to civil engineering undergraduate and graduate students who are studying composite steel concrete design and construction. Equations for design resistances are presented clearly so that they can be easily programmed into design spreadsheets for ease of use.
Download or read book Fire Resistance of Reinforced Concrete Columns written by H. J. Wu and published by . This book was released on 1992 with total page 55 pages. Available in PDF, EPUB and Kindle. Book excerpt:
