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Civil-Comp Proceedings
ISSN 1759-3433
CCP: 19
Edited by: B.H.V. Topping
Paper I.2

The Analysis of Large Non-Uniform Spatial Shear Wall Systems by a Discrete Force Method

D. Johnson and A. Nadjai

Department of Civil and Structural Engineering, The Nottingham Trent University, Nottingham, England

Full Bibliographic Reference for this paper
D. Johnson, A. Nadjai, "The Analysis of Large Non-Uniform Spatial Shear Wall Systems by a Discrete Force Method", in B.H.V. Topping, (Editor), "Developments in Computational Engineering Mechanics", Civil-Comp Press, Edinburgh, UK, pp 11-20, 1993. doi:10.4203/ccp.19.1.2
The static linear elastic analysis of spatial shear wall systems subjected to lateral loading is considered. A discrete force method is developed for the solution of such problems. The proposed method enforces compatibility of deformation on the relative vertical displacement between adjacent release positions, which are established at assumed contraflexural points of the connecting beams which link the slab together and also at storey level intervals along the intersection lines of adjoining non-coplanar walls. The solution of the compatibility conditions provides the redundant shear forces at the assumed contraflexural positions and the stress resultant solution is completed by statical considerations. The displacement solution corresponding to the stress resultants is then evaluated using the linear elasticity assumption.

The basic formulation neglects the torsional resistance of individual wall elements which is shown to be significant in a typical open section example. An iterative procedure is adopted for the incorporation of wall element torsional stiffness and is shown to be effective. The efficiency and versatility of the discrete force method are illustrated by application of the technique to the analysis of two practical, complex wall systems.

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