基于行车振动效应的预制装配式钢板组合梁桥行车舒适度研究

Research of the Comfort Level of Prefabricated Composite Steel Plate Beam Bridge Based on the Vibration Effect of Driving Vehicle

摘要: 预制装配式钢板组合梁桥是一种利用混凝土桥面板和钢主梁承担荷载的组合梁桥。该桥梁结构形式顺应行业发展趋势，在工程中得到了广泛应用。但由于车桥质量比相差较大，在行车荷载激励下容易引起桥梁振动，同时桥梁的振动会反作用于车辆，使行车舒适度降低。为此，本文拟采用一套液压阻尼装置，针对不同车速、桥面不平顺度等工况，对桥梁的动力响应进行研究与控制，以期提升行车舒适度。

Abstract: Prefabricated steel plate composite beam bridge is a composite beam bridge which uses concrete deck and steel girder to bear loads. The bridge structure conforms to the development trend of the industry and has been widely used in engineering. However, due to the large difference of vehicle-bridge mass ratio, the bridge vibration is easy to be caused under the driving load excitation. At the same time, the vibration of the bridge will react on the vehicle and reduce the driving comfort. Therefore, a set of hydraulic damper is proposed in this paper to control the dynamic response of the bridge under different vehicle speeds and roughness of the deck in order to improve driving comfort.