Modal identification of a cable-stayed footbridge

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20153701272400
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(1) Rci dynamics, Structural Dynamics Consultants, Duebendorf, Switzerland | 1600年 / et al; Faculty of Science and Engineering, Waseda University, Japan; The Kajima Foundation, Japan; The Maeda Engineering Foundation, Japan; The Obayashi Foundation, Japan; Tokyo Metropolitan Government, Japan卷 / CRC Press/Balkema期
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A 35 year’s old cable-stayed footbridge was investigated into analytically and experimentally to becoming able to rate it’s state of health. This paper presents the dynamic tests performed on this twin-32-m- span prestressed concrete structure and the respective results. Besides the main girder the bridge exhibits an A-shaped pylon as well as eight cables consisting of post-tensioned parallel wire tendons. On the one hand; the tests covered experimental modal analyses of the whole structure including main girder; pylon and cables as well as of two of the cables as isolated structures under ambient excitation conditions. In addition; the structure was loaded with a jogger crossing the bridge and the maximum cable response to manual excitation was determined. The latter is not discussed here. The bridge state of health could be rated as satisfying. © 2015 Taylor & Francis Group; London;
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