Results 111 to 120 of about 87,448 (166)
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Building Science, 1972
Abstract The paper considers deep beams simply supported (by columns, in shear wall construction, hoppers etc.) where support conditions approximate to a parabolic shearing force on the vertical end faces of the beam. An approximate polynomial stress function solution is first obtained which does not satisfy all the necessary boundary conditions ...
M. Holmes, P.M. Mason
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Abstract The paper considers deep beams simply supported (by columns, in shear wall construction, hoppers etc.) where support conditions approximate to a parabolic shearing force on the vertical end faces of the beam. An approximate polynomial stress function solution is first obtained which does not satisfy all the necessary boundary conditions ...
M. Holmes, P.M. Mason
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ACI Structural Journal, 1995
Using the strut-and-tie approach, this paper examines three aspects of deep beam design, which as yet has not been conclusively dealt with by earlier researchers. Previous test results hare been used to justify the use of the previously mentioned principle in predicting the shear strengths of deep beams that are continuously punctured by web openings ...
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Using the strut-and-tie approach, this paper examines three aspects of deep beam design, which as yet has not been conclusively dealt with by earlier researchers. Previous test results hare been used to justify the use of the previously mentioned principle in predicting the shear strengths of deep beams that are continuously punctured by web openings ...
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Journal of the Engineering Mechanics Division, 1981
A nonlinear theory for multilayered shells is particularized for deep beams. The results are linearized and applied to small deflection analyses of such beams. In the solution, a finite difference scheme is used which takes advantage of the fact that higher derivatives of variables do not all appear simultaneously in any one equation, thereby admitting
Marcelo Epstein, P.G. Glockner
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A nonlinear theory for multilayered shells is particularized for deep beams. The results are linearized and applied to small deflection analyses of such beams. In the solution, a finite difference scheme is used which takes advantage of the fact that higher derivatives of variables do not all appear simultaneously in any one equation, thereby admitting
Marcelo Epstein, P.G. Glockner
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ACI Structural Journal, 2014
An experimental study was performed to examine the effect of section depth on the strength and serviceability of reinforced concrete deep beams. Full-scale tests were conducted on simply supported beams with the following cross sections: 21 x 23 in. (533 x 584 mm), 21 x 42 in. (533 x 1067 mm), and 21 x 75 in. (533 x 1905 mm).
David B. Birrcher +3 more
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An experimental study was performed to examine the effect of section depth on the strength and serviceability of reinforced concrete deep beams. Full-scale tests were conducted on simply supported beams with the following cross sections: 21 x 23 in. (533 x 584 mm), 21 x 42 in. (533 x 1067 mm), and 21 x 75 in. (533 x 1905 mm).
David B. Birrcher +3 more
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Comparative analysis of deep beams
Computers & Structures, 1992Abstract The characteristic behaviour and mechanism of load transfer of deep beams are studied employing the eight-noded isoparametric finite element considering the effect of reinforcements. The authors' generalized formulation is specialized to ignore the reinforcement to apply in a problem solved earlier by other investigators with a view to ...
D.K.Singha Roy +2 more
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Deep-etched sinusoidal polarizing beam splitter grating
Applied Optics, 2010A sinusoidal-shaped fused-silica grating as a highly efficient polarizing beam splitter (PBS) is investigated based on the simplified modal method. The grating structure depends mainly on the ratio of groove depth to grating period and the ratio of incident wavelength to grating period.
Jijun, Feng +3 more
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Beaming Daylight Into Deep Rooms
Batiment International, Building Research and Practice, 1985Among the options of reducing energy consumption by artificial lighting in buildings is the effective use of natural lighting. By using direct-beam radiation from the sun, deeper light penetration and higher illuminance levels can be achieved in buildings that are predominantly used in the daytime.
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2018
A propped deep beam with opening is considered. This scenario has been the subject of past fib bulletins on strut and-tie modelling. The deep beam has height 4 m and span 11 m. The bottom left-hand corner is supported by a force 3000 kN and the right-hand edge is fixed to an adjacent shear wall. The deep beam is loaded on top by a point load 5000 kN at
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A propped deep beam with opening is considered. This scenario has been the subject of past fib bulletins on strut and-tie modelling. The deep beam has height 4 m and span 11 m. The bottom left-hand corner is supported by a force 3000 kN and the right-hand edge is fixed to an adjacent shear wall. The deep beam is loaded on top by a point load 5000 kN at
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ACI Journal Proceedings, 1982
Results of tests on 52 deep reinforced concrete beams under two equal symmetrically placed point loads are reported. The investigation's objectives were to study the effect of vertical and horizontal web reinforcement and shear span-to-effective depth ratio on inclined cracking shear, ultimate shear strength, midspan deflection, tension reinforcement ...
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Results of tests on 52 deep reinforced concrete beams under two equal symmetrically placed point loads are reported. The investigation's objectives were to study the effect of vertical and horizontal web reinforcement and shear span-to-effective depth ratio on inclined cracking shear, ultimate shear strength, midspan deflection, tension reinforcement ...
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Minimum Web Reinforcement in Deep Beams
ACI Structural Journal, 2013An experimental study was performed to examine current code requirements for minimum web reinforcement of reinforced concrete deep beams. Twelve full-scale tests were conducted in which the shear span-depth ratio (a/d) was 1.2, 1.85, or 2.5. At each a/d, the quantity of web reinforcement was the primary variable. Web reinforcement ranged from 0 to 0.3%
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