The Structural Engineer > Archive > Volume 47 (1969) > Issues > Issue 9 > The Behaviour of a Braced Suspension Bridge Cable
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The Behaviour of a Braced Suspension Bridge Cable

It is shown that an examination of the deformation of a free cable suggests an array of diagonal stays or braces as a means of reducing the deflections. The braces prestress the cable which, since it behaves nonlinearly, produces an increase in the stiffness. Bracing is similar to gravity loading in that it increases the vertical forces acting on the cable. The increased stiffness is thus analogous to gravity stiffness. A theory is presented for analysing this type of structure, and a numerical method of solving the governing equations is given. An experimental investigation verifying the theory is included and finally a theoretical discussion of the significance of the main parameters is given. T.J. Poskitt and P.R. Stott

Author(s): Poskitt, T J;Stott, P R

Keywords: cables;behaviour;suspension bridges