Experiments on the effect of helical line on the staycable vibration at high Reynolds number
LIU Qingkuan1, 2, LU Zhaoliang3, TIAN Kaiqiang3, HU Bo4, MA Wenyong1, 2
1.Structural Health Monitoring and Control Institute Shijiazhuang Tiedao University, Shijiazhuang, 050043, China;
2. Hebei Province Key Lab of Structural Health Monitoring and Control, Shijiazhuang, 050043, China;
3.School of Civil Engineering Shijiazhuang Tiedao University, Shijiazhuang 050043, China;
4.School of Department of Engineering Mechanics Shijiazhuang Tiedao University, Shijiazhuang 050043, China;
Abstract：Cable is one of the basic construction members of a cablestayed bridge. The wind loads on cables constitute a high proportion of total wind loads on the bridge, and the windinduced vibration is an important problem of great concern in bridge design. Through a selfdesigned vibration test system for staycables, the vibration model tests for a rigid staycables model with diameter of 120 mm as well as for 25 kinds models of staycables wound with helical lines were conducted in a wind tunnel.The changing rule of the vibration amplitude along with the Reynolds number was analyzed. The results show that winding a helical line on the cable can reduce the Reynolds number effects on it. When the helical line winding spacing is constant, the amplitude trends to decrease along with the increase of helical line diameter. When the helical line diameter is constant, the amplitude trends to decrease along with the decrease of helical line winding spacing. The vibration stability is improved with the increase of helical line diameter and the decrease of helical line winding spacing.
刘庆宽1,2，卢照亮3，田凯强3，胡波4，马文勇1,2. 螺旋线对斜拉桥斜拉索高雷诺数风致振动影响的试验研究[J]. 振动与冲击, 2018, 37(14): 175-179.
LIU Qingkuan1, 2, LU Zhaoliang3, TIAN Kaiqiang3, HU Bo4, MA Wenyong1, 2. Experiments on the effect of helical line on the staycable vibration at high Reynolds number. JOURNAL OF VIBRATION AND SHOCK, 2018, 37(14): 175-179.
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