Effects of bending stiffness and support excitation of the cable on cable rain-wind induced inclined vibration

Abstract

The main objective of this paper is to investigate the responses of the inclined cable due to rain-wind induced vibration (RWIV) considering the bending stiffness and support excitation of the cable. The single-degree-of-freedom (SDOF) model is employed to determine the aerodynamic forces. The 3D model of a cable subjected to RWIV is developed using the linear theory of the cable oscillation and the central difference algorithm in which the influences of wind speed change according to the height above the ground, bending stiffness, and support excitation of the cable are considered. The numerical results showed that the cable displacement calculated by considering cable bending stiffness in RWIV is slightly smaller than in the case of neglecting it. And, the cable diameter had a nonlinear relationship with cable displacement, where when both diameter and mass per unit length of cable increase cable displacement will decrease. In addition, the periodic oscillation of cable supports extremely increases the amplitude of RWIV if its frequency is nearby that of the cable.

Keywords:

3D model; inclined cable; rain-wind induced vibration; rivulet; analytical model; vibration.

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Author Biography

Viet-Hung Truong, Faculty of Civil Engineering, Thuyloi University, 175 Tay Son street, Dong Da district, Hanoi, Vietnam

Bộ môn Công trình Giao thông, Trường Đại học Thủy Lợi, số 175 Tây Sơn, Đống Đa, Hà Nội

Published
19-08-2020
How to Cite
Truong, V.-H. (2020). Effects of bending stiffness and support excitation of the cable on cable rain-wind induced inclined vibration. Journal of Science and Technology in Civil Engineering (STCE) - NUCE, 14(3), 110-124. https://doi.org/10.31814/stce.nuce2020-14(3)-10
Section
Research Papers