A practical approach to predict the torsional behaviours of shear cores and tubular structures with uniform or non-uniform torsional properties

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A practical approach to predict the torsional behaviours of shear cores and tubular structures with uniform or non-uniform torsional properties

 

Author: Leung, Man-kit
Title: A practical approach to predict the torsional behaviours of shear cores and tubular structures with uniform or non-uniform torsional properties
Degree: M.Sc.
Year: 1995
Subject: Torsion
Tubular steel structures
Hong Kong Polytechnic University -- Dissertations
Department: Dept. of Civil and Structural Engineering
Pages: 1 v. (various pagings) : ill. ; 30 cm
Language: English
InnoPac Record: http://library.polyu.edu.hk/record=b1205003
URI: http://theses.lib.polyu.edu.hk/handle/200/3686
Abstract: The behaviour of a structure to torsion is a fairly complicated problem. Much of the available works depends on the use of the finite element techniques. This Dissertation intends to apply an analytical method based on the continuum technique and Vlasov's constrained torsion theory to predict the torsional behaviours of shear cores and tubular structures with uniform property along its height. The solution is readily solved by hand using the proposed design curves or tables, and is valuable to practising engineers for preliminary sizing of these structures. The limitation of this method due to shear deformation will also be studied. The author will then develop a method based on the above approach together with the transfer matrix technique to predict the torsional behaviours of shear core with non-uniform properties along its height or with a stiffening element at certain level. The optimum location of the stiffening element to achieve minimum top rotation or minimum base bimoment will be presented in the form of graphs. Examples will be given to compare its accuracy with experimental results and other numerical and/or analytical methods. Practical problems will be solved to investigate the torsional effects on practical sized structures.

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