陈燊, 唐意, 黄文机. 多车荷载下刚架拱桥车振仿真可视化研究[J]. 工程力学, 2005, 22(1): 218-222.
引用本文: 陈燊, 唐意, 黄文机. 多车荷载下刚架拱桥车振仿真可视化研究[J]. 工程力学, 2005, 22(1): 218-222.
CHEN Shen, TANG Yi, HUANG Wen-ji. VISUAL VIBRATION SIMULATION OF FRAMED ARCH BRIDGE UNDER MULTI-VEHICLE CONDITION[J]. Engineering Mechanics, 2005, 22(1): 218-222.
Citation: CHEN Shen, TANG Yi, HUANG Wen-ji. VISUAL VIBRATION SIMULATION OF FRAMED ARCH BRIDGE UNDER MULTI-VEHICLE CONDITION[J]. Engineering Mechanics, 2005, 22(1): 218-222.

多车荷载下刚架拱桥车振仿真可视化研究

VISUAL VIBRATION SIMULATION OF FRAMED ARCH BRIDGE UNDER MULTI-VEHICLE CONDITION

  • 摘要: 在高速公路刚架拱实桥动测及单车荷载作用研究基础上,建立多车荷载激振模型,发展了研究刚架拱桥车激共振特性的可视化仿真方法,探讨刚架拱桥在高速多车荷载作用下的共振条件,分析车距、车速和车数对竖向瞬态振动峰值的影响,编制运行多车荷载下振动仿真分析可视化程序。研究表明,公路桥在竖向共振条件下有可能出现多个瞬态自由振动的峰值叠加。仿真计算得到的实桥共振速度及其对应的跨中竖向振幅峰值,为阻尼抑振提供理论依据。

     

    Abstract: A visual numerical simulation method is developed to analyze the vibrations of framed arch bridge under multivehicle condition. The influence of parameters such as the velocity, number of vehicles and distance between two adjacent vehicles on the peak value of vertical dynamic response of the bridge is studied. It is found that resonance may occur as a result of the sum of free-vibration-response components generated by each successive load moving on the bridge. The resonance velocity and its corresponding peak values obtained by the simulator program for an actual framed arch bridge provide an important basis to restrain the vehicle-bridge vibration.

     

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