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行驶在桥面的汽车荷载会对结构产生动力冲击作用,在桥梁的设计建造及结构安全评估等工作中,在当前阶段的桥梁设计建造与结构安全性分析等工作中,汽车荷载效应的动力部分通常采用冲击系数进行考虑。合理的冲击系数取值对于桥梁结构的安全性、经济性具有重要影响。本文综述了近年来国内外学者在公路桥梁冲击系数研究方面的成果与进展,包括冲击系数的实测分析、理论分析现状、冲击系数的影响因素分析等内容。借此为公路桥梁冲击系数下一步的研究与优化提供参考。
Vehicle loads on the bridge deck will have a dynamic impact on the structure. During the design and construction of the bridge and structural safety assessment, in the current stage of bridge design and construction and structural safety analysis, the dynamic part of the vehicle load effect The impact factor is usually taken into account. Reasonable impact coefficient for the bridge structure safety, economy has a significant impact. In this paper, the achievements and progress of the research on impact coefficient of highway bridges in recent years are summarized, including the measurement and analysis of impact coefficient, the status quo of theoretical analysis and the analysis of the influence factors of impact coefficient. This will provide a reference for further study and optimization of the impact coefficient of highway bridges.