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桥梁下部结构是支撑上部结构的重要构件,是桥梁结构的重要组成部分,提出采用振动法中振幅指标和波形形态对桥梁下部结构损伤进行判别,并利用在遭受船及洪水漂流物撞击后三座桥梁的振动测试数据和一座受损桥墩桥梁振动波形图,来说明利用振动法中的振幅指标在大多数情况下可以方便、有效的评价桥梁下部结构有无损伤,对行车安全有无影响。
The lower part of the bridge is an important component supporting the superstructure and is an important part of the bridge structure. It is proposed that the damage of the lower part of the bridge be judged by the amplitude and the waveform of the vibration method, and three Bridge vibration test data and a bridge pier vibration waveform chart of a damaged bridge to illustrate the use of vibration method in the amplitude of the index in most cases can be convenient and effective assessment of the bridge under the structure without damage to traffic safety have no effect.