Pressure distribution and aerodynamic forces on stationary box bridge sections
Pressure distribution and aerodynamic forces on stationary box bridge sections
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DOI：
10.12989/was.2001.4.5.399
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发表时间：
2001-10
影响因子：
1.6
通讯作者：
F. Ricciardelli;H. Hangan
中科院分区：
文献类型：
--
作者：
F. Ricciardelli;H. Hangan
已在不同入射角的两种配置（即没有和有新泽西州交通障碍）的固定箱式甲板截面模型上进行了同步压力和力测量。推导了平均和波动空气动力系数和压力系数，以及它们的频谱以及压力和总空气动力之间的相干函数。首先将由力测量得出的平均空气动力系数与由甲板表面压力积分得出的平均空气动力系数进行比较。确定力和当地压力之间的相关性，以便深入了解风的激发机制。还分析了入射角对压力分布和脉动力的影响。事实证明，特定的甲板截面区域对甲板的空气动力激励负有更大的责任。
Simultaneous pressure and force measurements have been conducted on a stationary box deck section model for two configurations (namely without and with New Jersey traffic barriers) at various angles of incidence. The mean and fluctuating aerodynamic coefficients and pressure coefficients were derived, together with their spectra and with the coherence functions between the pressures and the total aerodynamic forces. The mean aerodynamic coefficients derived from force measurements are first compared with those derived from the integration of the pressures on the deck surface. Correlation between forces and local pressures are determined in order to gain insight on the wind excitation mechanism. The influence of the angle of incidence on the pressure distribution and on the fluctuating forces is also analysed. It is evidenced how particular deck section areas are more responsible for the aerodynamic excitation of the deck.