风-车-桥耦合作用下大跨桥梁驾驶模拟实验方法

Experimental Method for Driving Simulation on the Long-span Bridge Under Wind-vehiclebridge Coupling

摘要:

为了对大跨桥梁上的行车安全进行精细化研究，基于风-车-桥耦合作用理论，计算3种风速下的桥梁振动作用，建立同时考虑侧风作用和振动作用的大跨桥梁驾驶模拟实验场景.将20名驾驶员根据驾驶经验的不同分成两组，开展驾驶模拟实验.研究结果表明：在侧风作用的后期，受到桥梁振动影响的车辆横向偏移和偏航角速度的波动比无振动情况下大.桥梁振动作用会对驾驶员产生积极的警示作用和不利的干扰作用，对经验相对欠缺的驾驶员，侧风和振动共同作用对行车安全更不利.

Abstract:

In order to carry out a more detailed study of driving safety on long-span bridges, based on the wind-vehicle-bridge coupling theory, the bridge vibration effects under three wind speeds are calculated and a long span bridge driving simulation experiment scenario considering both the crosswind and the vibration was established. Twenty drivers were divided into two groups according to the driving experience, and the driving simulation experiment was conducted. The results show that in the late stage of crosswind, the lateral displacement and the yaw speed of the vehicle affected by bridge vibration are larger than those without vibration. Bridge vibration effect will have a positive warning effect and adverse interference to driver, for the driver with relatively lack of experience, crosswind and vibration combination is more detrimental to traffic safety.