This paper analyzes the influences of important structural design parameters on the wind-induced response of cross-rope\nsuspension tower-line. A finite element model of cross-rope suspension tower-line system is established, and the dynamic timehistory\nanalysis with harmonic wave superposition method is conducted. The two important structural design parameters such\nas initial guy pretension and sag-span ratio of suspension-rope are studied, as well as their influences on the three wind-induced\nvibration responses such as tensile force on guys, the reaction force on mast supports, and the along-wind displacement of the mast\ntop; the results show that the value of sag-span ratio of suspension-rope should not be less than 1/9 and the value of guy pretension\nshould be less than 30% of its design bearing capacity. On this occasion, the tension in guys and compression in masts would be\nmaintained in smaller values, which can lead to a much more reasonable structure.
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