高速铁路桥梁路段地面环境振动衰减特性研究

为了解高速铁路桥梁段列车运行引起的桥下地面环境振动衰减规律，对京津城际铁路247号桥墩处高速列车桥梁段列车运行时的环境振动进行测试，通过回归分析测试数据，得到了高速铁路桥梁段列车运行时所引起的地面环境振动衰减经验公式，并对现场测试数据与其他预测公式进行比较，分析了预测公式的有效性，为高速铁路引起地面环境振动的预防和治理提供参考。

Study of Ground Environmental Vibration Attenuation Characteristics at High-speed Train Bridge Section

For the understanding of the attenuation regularity of underbridge ground vibration caused by the train operation through high speed railway bridges, in this paper, the environment vibration was tested when the train passed through the No. 247 pier of the bridge sections on Beijing-Tianjin Intcrcity Railway. Based on the regression analysis on the test data, this study has conclued the attenuation formula of the ground vibration. Besides, this paper comparedthe field test data with other predictive formulas, and analyzed the validity predictive formula. This paper has provided reference for the prevention ＆ control of ground environmental vibration caused by high speed railway.