Static Analysis of Cables' Configuration in Cable-Stayed Bridges

Based on static balance equations of a differential cable segment,catenary solutions to inextensible and elastic cables under the action of self-weight were derived respectively.Then an approximate parabola configuration was obtained without neglecting the chord component force of cable self-weight.Using the parabola formula cable static parameters could be derived directly without iterative calculation.By taking two actual stay cables as examples,the correctness of all the solutions was confirmed.And the parabola formula is proved to be simple and precise and can be used conveniently in practical cable designs and other static analyses.