Computational & Technology Resources
an online resource for computational,
engineering & technology publications
Civil-Comp Proceedings
ISSN 1759-3433
CCP: 56
Edited by: B.H.V. Topping
Paper V.3

Direct Design for Bending, Torsion and Shear in Reinforced and Partially Prestressed Concrete Beams

P. Bhatt and A. Muzhami

Department of Civil Engineering, University of Glasgow, Glasgow, United Kingdom

Full Bibliographic Reference for this paper
P. Bhatt, A. Muzhami, "Direct Design for Bending, Torsion and Shear in Reinforced and Partially Prestressed Concrete Beams", in B.H.V. Topping, (Editor), "Advances in Civil and Structural Engineering Computing for Practice", Civil-Comp Press, Edinburgh, UK, pp 175-185, 1998. doi:10.4203/ccp.56.5.3
Tests were conducted on eleven reinforced and partially prestressed concrete hollow beams subjected to bending, shear and torsion. 'The beams were designed using the direct design method which is based on the Lower Bound theorem of the classical Theory of Plasticity. The beams were 300 mm square with a 50 mm wall thickness and 3800 mm long. The main variables were the ratio in the web of the maximum elastic shear stress due to shear force to the elastic shear stress due to torsion and the ratio of the bending moment to the twisting moment. For analysis purposes, the beams were modelled as thin hollow beams with zero bending resistance. Analysis was carried out using a 2-D non-linear finite element program. Good agreement was observed in all cases between the experimental and numerical failure loads and mode of failure. The results indicate that that Direct Design method can be successfully used to design hollow box beams for the combined effect of bending, shear and torsional loads.

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 £95 +P&P)