Advances and Applications in Statistics
Volume 25, Issue 2, Pages 131 - 151
(December 2011)
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STUDY OF TWO MODELS FOR A CONTINUOUS BEAM REINFORCED CONCRETE FOR
THREE DIFFERENT SECTIONS
Arnulfo Luevanos Rojas, Alberto Diosdado Salazar, Facundo Cortes Martinez, Ramon Luevanos Rojas and
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Abstract: In this paper, we develop a comparative analysis using the method of slope-deflection of statically indeterminate beams. The first model is the neglect shear deformations (considering only the flexure deformation), this is the traditional method analysis for continuous beams and the second model is to consider shear deformations (taking into account flexure deformations and shear). For both the models, an analysis is made of three different sections of concrete. The first is a rectangular section, the second is type “I” with the larger web thickness and the third is an also “I” with the thinner web thickness. Each section is analyzed for three different lights, 10.00m, 5.00m and 3.00m. This paper shows the differences between the two models of the problems considered. According to the results obtained, it is shown that there is a greater difference in section “I” with the thinner web thickness and in the light of 3.00m. Therefore, the usual practice of not considering the shear deformations is not a recommended solution especially in short beams and sections “I” with the thinner web thickness. Then it proposes the use of taking into account shear deformations and also more attached to reality. |
Keywords and phrases: shear deformations, Poisson’s ratio, elasticity modulus, shear modulus, form factor, shear area. |
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