Identification and application of six-component aerodynamic admittance functions of a closed-box bridge deck
Identification and application of six-component aerodynamic admittance functions of a closed-box bridge deck
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DOI：
10.1016/j.jweia.2017.11.002
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发表时间：
2018
期刊：
影响因子：
--
通讯作者：
Xu Ziran
中科院分区：
文献类型：
--
作者：
Zhu Ledong;Zhou Qi;Ding Quanshun;Xu Ziran
A colligated residue least square method of auto and cross spectra (CRLSMACS) is presented for identifying six-component aerodynamic admittance functions (AAFs) base on common force and pressure measurement tests in the passive grid-generated turbulent 铿俹w. The incomplete spanwise correlation of the buffeting force on the sectional model in the turbulent 铿俹w is corrected. The six-component AAFs of a 铿俛t closed-box deck of a single-tower cable-stayed bridge are identi铿乪d with the presented method for the service states without/with wind barriers and the construction state under 0魛€?wind attack angle, respectively. The buffeting responses of the bridge are then calculated for both the service and typical construction sates by using a 铿乶ite element approach based on the quasi-steady buffeting theory with the tested six-component AAFs to consider the unsteady effect of buffeting forces. The calculated buffeting responses are 铿乶ally compared with and found to agree well with those obtained via full bridge aeroelastic model tests, verifying the feasibility of the proposed CRLSMACS as well as the reliability of the identi铿乪d six-component AAFs and the calculated buffeting responses.