Nodal Forces in the Analysis of the Ultimate Torsional Moment for Rectangular Reinforced Concrete Beams PDF Download
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Author: L. Elfgren
Publisher:
ISBN:
Category :
Languages : en
Pages : 23
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Book Description
Author: L. Elfgren
Publisher:
ISBN:
Category :
Languages : en
Pages : 23
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Book Description
Author: Lennart Elfgren
Publisher:
ISBN:
Category :
Languages : en
Pages : 8
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Book Description
Author: Leonard Leslie Jones
Publisher:
ISBN:
Category : Technology & Engineering
Languages : en
Pages : 266
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Author: P. Müller
Publisher: Birkhäuser
ISBN: 3034853351
Category : Science
Languages : en
Pages : 19
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Book Description
Zur Erfassung des Bruchwiderstandes von Stahlbetonbalken mit diinnwandigem geschlossenem Querschnitt unter Torsion und Biegung hat sich das Fachwerk modell als sehr geeignet erwiesen. Dagegen zeigt sich, dass bis heute keine mit diesem Modell vertdigliche Kollapsmechanismen bekannt sind. Insbesondere wird darauf eingegangen, warum Mechanismen wie {laquo}Skew Bending{raquo} zu anderen Trag lastfaktoren fUhren als das Fachwerkmodell. Die dem Fachwerkmodell implizit zugrunde liegende Fliessbedingung fiir Stahlbetonscheiben wird hergeleitet. Unter Verwendung des zugehorigen Fliessgesetzes werden neue Mechanismen entwickelt, die mit dem im Fachwerkmodell angenommenen Spannungszustand vertraglich sind. Grundlage der vorliegenden Arbeit sind die klassische Plastizitatstheorie und die Grenzwertsatze des Traglastverfahrens.
Author: Arthur Edward McMullen
Publisher:
ISBN:
Category : Concrete beams
Languages : en
Pages : 0
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Book Description
The primary objective of this investigation was to study the behavior of reinforced concrete beams subjected to combined loading with particular regard to their behavior at failure. The experimental phase of this investigation consisted of testing 34 reinforced concrete beams. Twenty two beams were subjected to various combinations of bending and torsion and twelve were subjected to various combinations of bending, torsion and shear. All beams had a nominal cross section of 6" x 12" and a nominal concrete strength of 5000 psi. Both longitudinal and transverse reinforcement in various combinations was provided in all beams. The testing equipment that was designed and fabricated for this investigation permitted independent application of the twisting and transverse loads. The ratio between the twisting moment and the bending moment could be changed at any time during a test. All beams were tested to failure by applying the load in a series of increments. Each increment consisted of increasing to a predetermined level the transverse load or the twisting load or both, depending on the type of test. In the cases where both types of load were applied in the same increment, the transverse load was applied first. Twenty nine beams were subjected to loads such that for any one test the ratio of twisting moment to bending moment at the end of each increment was a constant. For the other five beams this ratio was different at the end of each increment and four of these beams were subjected to various sequences of load. Based on the observations made in the experimental phase of this investigation three idealized failure surfaces have been presented, two of which were first suggested by Lessig. Equations for the ultimate torsional strength of a beam based on each of the three failure surfaces have been developed and their method of solution has been presented. These equations have also been simplified and an interaction diagram consisting of three straight lines has been presented along with the applicable equations. The correlation between the experimental results of 109 beams and the theoretical results obtained from both the simplified analysis and the more comprehensive analysis has been given. Of these beams, 34 are the beams tested in this investigation and 75 are beams that have been tested by other investigators. The observations and test results indicate that reinforced concrete beams that are subjected to bending, torsion and moderate amounts of transverse shear can fail by three different modes. These modes of failure are characterized by the formation of a hinge adjacent to one face of the beam and yielding of the reinforcement adjacent to the face opposite to the hinge. The modes of failure predicted by the analysis agree with the observed modes of failure.
Author: P. Lampert
Publisher: Birkhäuser
ISBN: 3034859546
Category : Science
Languages : en
Pages : 27
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Author: R. A. Swann
Publisher:
ISBN:
Category : Architecture
Languages : en
Pages : 18
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Book Description
Author: American Concrete Institute
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
Author:
Publisher:
ISBN:
Category : Mechanics, Applied
Languages : en
Pages : 1090
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Book Description
Author: M. Nadim Hassoun
Publisher: John Wiley & Sons
ISBN: 1118767780
Category : Technology & Engineering
Languages : en
Pages : 1072
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Book Description
The most up to date structural concrete text, with the latest ACI revisions Structural Concrete is the bestselling text on concrete structural design and analysis, providing the latest information and clear explanation in an easy to understand style. Newly updated to reflect the latest ACI 318-14 code, this sixth edition emphasizes a conceptual understanding of the subject, and builds the student's body of knowledge by presenting design methods alongside relevant standards and code. Numerous examples and practice problems help readers grasp the real-world application of the industry's best practices, with explanations and insight on the extensive ACI revision. Each chapter features examples using SI units and US-SI conversion factors, and SI unit design tables are included for reference. Exceptional weather-resistance and stability make concrete a preferred construction material for most parts of the world. For civil and structural engineering applications, rebar and steel beams are generally added during casting to provide additional support. Pre-cast concrete is becoming increasingly common, allowing better quality control, the use of special admixtures, and the production of innovative shapes that would be too complex to construct on site. This book provides complete guidance toward all aspects of reinforced concrete design, including the ACI revisions that address these new practices. Review the properties of reinforced concrete, with models for shrink and creep Understand shear, diagonal tension, axial loading, and torsion Learn planning considerations for reinforced beams and strut and tie Design retaining walls, footings, slender columns, stairs, and more The American Concrete Institute updates structural concrete code approximately every three years, and it's critical that students learn the most recent standards and best practices. Structural Concrete provides the most up to date information, with intuitive explanation and detailed guidance.
