Results 211 to 220 of about 11,527 (267)

Vibrations of Steel-Concrete Composite Beams

Journal of Vibration and Control, 2000
This paper is an experimental analytical investigation on the dynamic behavior of steel-concrete composite beams subject to small vibrations. A one-dimensional model of a composite beam is presented, where the elements connecting the steel beam and the reinforced concrete slab are described by means of a strain energy density function defined ...
BISCONTIN G, MORASSI, Antonino, WENDEL P.   +2 more
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Flexural Deformability of Reinforced Concrete Beams

Journal of Structural Engineering, 1998
In reinforced concrete beams, the sectional definition of the moment-curvature relationship is not straightforward owing to the presence of cracks. In general, this problem has been solved by considering a representative portion of the beam and by defining the curvature 1/\ir as the ratio between the rotation of the portion considered and its length ...
FANTILLI A. P., FERRETTI, Daniele, IORI, Ivo, VALLINI P.   +3 more
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Evaluation of Shear Design Provisions for Reinforced Concrete Beams and Prestressed Concrete Beams

Journal of the Korea Concrete Institute, 2005
Shear test data have been extracted from previous experimental research and compiled into a database that may be the largest ever made. In this paper, the shear database (SDB) was used for evaluating shear design provisions for both reinforced concrete (RC) beams and prestressd concrete (PSC) beams.
Kang-Su Kim, Sang-Sik Kim
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Mechanical Model for Failure of Compressed Concrete in Reinforced Concrete Beams

Journal of Structural Engineering, 2002
According to many code requirements for concrete structures, the stress in the compressed part of reinforced concrete (RC) beams in bending is usually computed by means of uniaxial stress-strain relationships. These approaches sometimes are not able to reproduce the structural response of the beam when crushing of concrete in compression occurs.
FANTILLI A. P., FERRETTI, Daniele, IORI, Ivo, VALLINI P.   +3 more
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Water distribution in concrete beams

Materials and Structures, 2004
Moisture transfers have a major effect on concrete durability. For Alkali-Silica Reaction (ASR), chemical swellings depend on water content, and drying can have important consequences. Within the framework of a large experimental study developed in partnership by the Laboratoire Central des Ponts et Chaussees (LCPC) and Electricite de France (EDF), the
Multon, Stéphane, Toutlemonde, François   +1 more
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The reinforced concrete beam

1972
Although the geometry of the influence of the load on a beam is identical irrespective of material there is a fundamental difference in the way that a reinforced concrete beam produces the resistance moment. Within very small limits, a plain concrete beam would behave like any other elastic material.
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Analysis of Concrete Masonry Beams

Journal of Structural Engineering, 1995
This paper presents an in-depth structural engineering and structural reliability analysis of concrete masonry beams. The ductile response of masonry beams was studied in detail. A limit-state design methodology for reinforced-concrete masonry beams is presented in this paper based on the principles of structural reliability.
Jing-Jong Jang, Gary C. Hart
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Beams — Concrete and Plasterboard

1990
Once having produced a level ceiling, the work of squaring up a beam is made much easier. If the beams are deep, it may be an advantage to work in the sides or cheeks of the beam from the ceiling scaffold, and the bottom or soffit from a scaffold set up at a lower level.
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A LIMIT MODEL IN THE ANALYSIS OF STEEL-CONCRETE BEAMS

Mathematical Models and Methods in Applied Sciences, 2000
The problem of two bodies joined along their common surface by a thin soft third material having a periodic micro-structure has been considered. After identifying the two natural smallness parameters ε (which measures the thickness and the softness of the intermediate body) and η (which is the period of the micro-structure), the limits of the solution ...
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Concrete Beams with Prestressed Reinforcement

Journal of the Structural Division, 1970
Tests on six rectangular beams reinforced with variable amounts of deformed steel bars and precast prestressed concrete prisms are reported. Methods are suggested for computing the moment causing cracking of the in situ concrete and that causing cracking of the prestressed reinforcement.
Alfred Bishara, Filomeno N. Almeida
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