Safety evaluation and vibration control of transmission tower-line system subjected to cable rupture

doi:10.16265/j.cnki.issn1003-3033.2018.03.022

Abstract

Abstract: To reduce the cable rupture events of transmission tower-line systems in a severe service environment, a analytical model was built for the transmission tower-line system and a nonlinear computational method was developed for accurately simulating the contact effects in cable rupture event and evaluating the structural safety status. A method was developed for controlling vibration of the tower under cable rupture by installing viscous fluid dampers on the tower. The direct observations indicate that the dynamic impacting effects of the transmission tower-line system under cable rupture are obvious, which can be effectively suppressed by using viscous fluid dampers, and that the vibration reduction rates for the peak displacement, velocity and acceleration are 15%, 35% and 60% respectively.

Key words: cable rupture, contact effect, viscous fluid damper, safety evaluation, vibration control

CLC Number:

X913.4

YANG Fan, CHEN Bo, OUYANG Yiqin, YANG Deng. Safety evaluation and vibration control of transmission tower-line system subjected to cable rupture[J]. China Safety Science Journal, 2018, 28(3): 126-131.

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