V型墩钢管桁架桥的人致振动与减振控制研究

Study on Pedestrian-induced Vibration and Vibration Reduction Control ofV-pier Steel Pipe Truss Bridge

钢管桁架结构以其优良的力学性能被广泛应用于工程结构设计中,以一座V型墩钢管桁架人行景观桥为例,分析了其结构受力特性,提出了应用TMD进行人致振动控制的措施并分析了减振效果。研究结果表明:钢管桁架结构性能优良,使用TMD有效减小了结构人致振动竖向峰值加速度,大幅提升了桥梁的人致振动舒适度。

Steel pipe truss structure is widely used in engineering structure design because of its excellent mechanical properties.Taking a V-pier steel pipe truss pedestrian landscape bridge as an example,the structural stress characteristics are analyzed,TMD tuned mass damper are proposed to control the human-induced vibration and the vibration reduction effect is analyzed.The results show that the performance of steel pipe truss structure is excellent.The TMD tuned mass damper can effectively reduce the vertical peak acceleration response of structure-induced vibration and greatly improve the of human-induced vibration comfort of the bridge.