Abstract
The Locked Coil Rope cables of cable-stayed bridges have reportedly undergone significant relaxation and the deflections of the girders have also increased noticeably year after year from a number of field measurements. In this paper, an attempt is made to account for such behavior analytically assuming that the cables follow the linear visco-elasticity law; whereas the girders and towers remain linearly elastic. Described herein are the determination of the visco-elastic constants, and numerical analyses performed on totally fifteen cable-stayed bridges by finite element method and the numerical Laplace inverse transformation; The results were compared with the measured data on two bridges.
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