重庆交通大学学报(自然科学版) ›› 2007, Vol. 26 ›› Issue (3): 41-43.
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周兵,施尚伟
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ZHOU Bing,SHI Shang-wei
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摘要: 以重庆铜梁县珠宝大桥为例,采用共振法对拱桥主跨进行跑车和刹车动力试验,测定结构的动挠度、动应变等 动力响应参数,用时域法和Ff’I'分析桥梁的固有频率、阻尼比等模态参数,根据动力响应和模态参数进行桥梁承载 能力评定,达到为桥梁结构计算提供一个合理依据的目的.
关键词: 共振法, 动力特性, 分析
Abstract: Based on the resonant tests with running and braking trucks on the main span of Chongqing Tongliang County Zhu-bao Arch Bridge,the dynamic parameters including deflections and stresses were acquired,and the structural free vibration frequencies and damping coefficients were analyzed through the time-domain method and Fast Fourier Transforms(FFT),and the bridge carrying capacity was evaluated according to its dynamic responses and modal parameters.Those provide the structural analysis with reasonable supports.
Key words: resonant vibration, dynamic properties, analysis
中图分类号:
U446
周兵,施尚伟. 共振法测试拱式体系动力特性分析[J]. 重庆交通大学学报(自然科学版), 2007, 26(3): 41-43.
ZHOU Bing,SHI Shang-wei. Analysis of Arch Bridge Dynamic Properties by Resonant Vibration[J]. Journal of Chongqing Jiaotong University(Natural Science), 2007, 26(3): 41-43.
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