Concerning the cumulative damage of building structures caused by the long-term effects from high-speed railway train loads and various environmental impacts, and to ensure the service safety of building structures around viaducts, this paper establishes a vibration safety assessment method for the entire life cycle of building structures with less workload and good applicability, while ensuring the accuracy and effectiveness of the prediction of vibration response of building structures. Firstly, the vibration source function is formed based on the mechanical model of the mobile vibration source of high-speed railway trains, and the vibration wave of high-speed railway trains is numerically simulated. Then the time and frequency characteristics of the simulated high-speed railway train vibration waves are verified through on-site monitoring tests. In addition, the peak particle vibration velocity attenuation formula for the foundation site of the viaduct is derived by the dimension analysis method, and it is used to correct the attenuation characteristics of the simulated high-speed railway train vibration waves. Finally, based on the response spectrum method to realize the prediction and assessment of the overall vibration response of the building structures, and using the cumulative damage coefficient to reflect the cumulative degree of the service damage of the building structure, a vibration safety assessment method for the whole lifecycle of the building structure is proposed. The method overcomes the shortcoming that vibration velocity does not reflect the impact of service damage on the vibration safety of building structures, and avoids neglecting localized vibration damage, and is therefore useful for the rapid, overall vibration safety assessment of any long-term service building structure in a viaduct site.

中文翻译：

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高铁列车作用下高架桥周边建筑结构振动响应预测及振动安全评估方法

针对高铁列车荷载和各种环境影响的长期作用对建筑结构造成的累积损伤，保证高架桥周边建筑结构的使用安全，建立了全生命周期的振动安全评估方法。工作量少、适用性好，同时保证了建筑结构振动响应预测的准确性和有效性。首先，基于高速铁路列车移动振动源的力学模型，形成振动源函数，并对高速铁路列车的振动波进行数值模拟。然后通过现场监测试验验证了模拟高铁列车振动波的时间和频率特性。此外，通过量纲分析方法推导了高架桥基础部位的峰值质点振动速度衰减公式，并用于修正模拟高铁列车振动波的衰减特性。最后，基于响应谱法实现建筑结构整体振动响应的预测与评估，并利用累积损伤系数反映建筑结构服役损伤的累积程度，提出了一种建筑结构振动安全评估方法。提出了建筑结构的整个生命周期。该方法克服了振动速度不能反映使用损伤对建筑结构振动安全影响的缺点，避免了忽略局部振动损伤，可用于对长期使用建筑进行快速、全面的振动安全评估。高架桥工地上的结构。