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U.A. Girhammar and S.R. Atashipour

Division of Structural and Construction Engineering-Timber Structures
Department of Civil, Environmental and Natural Resources Engineering
Luleå University of Technology, Luleå, Sweden

doi:10.4203/ccp.102.128

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U.A. Girhammar, S.R. Atashipour, "A Study on Shear Deformations of Deep Composite Box-Type Beams Used in Timber Building Structures", in , (Editors), "Proceedings of the Fourteenth International Conference on Civil, Structural and Environmental Engineering Computing", Civil-Comp Press, Stirlingshire, UK, Paper 128, 2013. doi:10.4203/ccp.102.128

Keywords: deep box-type beam, shear deformations, explicit formula, Reddy-Bickford theory.

Summary

The higher-order shear deformation beam theory of Reddy-Bickford predicts accurately the shear deflection without the need of a shear correction factor. However, for more complicated cross-sections, e.g. including holes, it is shown that this theory is not adequate. To be able to predict accurately the shear deflections of deep composite box-type cross-sectional beams, a simple engineering approach is used to derive a closed-form expression for the shear correction factor for those types of beams. The high accuracy and reliability of the developed procedure is demonstrated by comparing those results with accurate three-dimensional finite element results and with Timoshenko and Reddy-Bickford theories. A comprehensive parametric study is presented to investigate the effects of various mechanical properties and geometric dimensions of the box-type of beams for the various models. There is very good agreement between the proposed engineering method and the three-dimensional finite element model.

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Front Page Browse CCP CSETS CTR IJRT Other Authors Search Purchase Guide FAQ Contact us	Civil-Comp Proceedings ISSN 1759-3433 CCP: 102 PROCEEDINGS OF THE FOURTEENTH INTERNATIONAL CONFERENCE ON CIVIL, STRUCTURAL AND ENVIRONMENTAL ENGINEERING COMPUTING Edited by: Paper 128 A Study on Shear Deformations of Deep Composite Box-Type Beams Used in Timber Building Structures U.A. Girhammar and S.R. Atashipour Division of Structural and Construction Engineering-Timber Structures Department of Civil, Environmental and Natural Resources Engineering Luleå University of Technology, Luleå, Sweden doi:10.4203/ccp.102.128 purchase the full-text of this paper Full Bibliographic Reference for this paper U.A. Girhammar, S.R. Atashipour, "A Study on Shear Deformations of Deep Composite Box-Type Beams Used in Timber Building Structures", in , (Editors), "Proceedings of the Fourteenth International Conference on Civil, Structural and Environmental Engineering Computing", Civil-Comp Press, Stirlingshire, UK, Paper 128, 2013. doi:10.4203/ccp.102.128 Keywords: deep box-type beam, shear deformations, explicit formula, Reddy-Bickford theory. Summary The higher-order shear deformation beam theory of Reddy-Bickford predicts accurately the shear deflection without the need of a shear correction factor. However, for more complicated cross-sections, e.g. including holes, it is shown that this theory is not adequate. To be able to predict accurately the shear deflections of deep composite box-type cross-sectional beams, a simple engineering approach is used to derive a closed-form expression for the shear correction factor for those types of beams. The high accuracy and reliability of the developed procedure is demonstrated by comparing those results with accurate three-dimensional finite element results and with Timoshenko and Reddy-Bickford theories. A comprehensive parametric study is presented to investigate the effects of various mechanical properties and geometric dimensions of the box-type of beams for the various models. There is very good agreement between the proposed engineering method and the three-dimensional finite element model. purchase the full-text of this paper (price £20) go to the previous paper go to the next paper return to the table of contents return to the book description purchase this book (price £65 +P&P)
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