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风环境下大跨度斜拉桥上的车辆驾驶舒适性评价

, PP. 54-60

Keywords: 桥梁工程,风-汽车-桥梁系统,1/3倍频带分析,驾驶舒适性评价,路面粗糙度

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Abstract:

?建立了风环境下行驶于大跨度桥梁上的车辆驾驶舒适性评价体系。在综合考虑汽车-桥梁系统空间耦合关系的基础上,提出了能够考虑桥梁的静风响应、抖振响应、汽车-桥梁耦合振动、系统的时变特性以及结构几何非线性和气动荷载非线性影响的风-汽车-桥梁系统空间耦合分析模型,该模型可以预测风环境下桥梁上通行车辆的行驶安全性及驾驶舒适性;建立了车辆驾驶员位置处驾驶舒适性评价方法,并采用ISO2631-1—1997标准对不同路面粗糙度下行驶于杭州湾跨海大桥的车辆驾驶舒适性进行了评价。评价结果表明:路况越差,车辆的驾驶舒适性越差,且所计算工况下车辆的竖向和侧向驾驶舒适性均满足ISO2631-1—1997标准。

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