Study on stabilizer aerodynamic measure of a cable-stayed bridge with a steel-concrete composite edge girder

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Journal of Vibration and Shock ›› 2017, Vol. 36 ›› Issue (8) : 48-54.

WANG Jiaxing1, NIU Huawei1, JIN Junzhong2, ZHANG Zhitian1, CHEN Zhengqing1

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Abstract

A steel-concrete composite edge girder is widely used in a long-span cable-stayed bridge,but it frequently leads to remarkable vortex-induced vibration and low flutter critical wind speed.Therefore,aerodynamic measures are always needed to improve the aerodynamic performance when this type of bridge is built in coastal region.Based on two cable-stayed bridges with steel-concrete composite edge girder,the controlling effect of stabilizer on the steel-concrete composite girder was investigated with a series of sectional model wind tunnel tests.The results indicate that the stabilizer can effectively eliminate vortex-induced vibration and increase the flutter critical wind speed of the edge girder section.

Key words

cable-stayed bridge / edge girder / aerodynamic measure / stabilizer / wind tunnel test

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WANG Jiaxing1, NIU Huawei1, JIN Junzhong2, ZHANG Zhitian1, CHEN Zhengqing1. Study on stabilizer aerodynamic measure of a cable-stayed bridge with a steel-concrete composite edge girder[J]. Journal of Vibration and Shock, 2017, 36(8): 48-54

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