Study on integrated design of ice and snow removal for bridge expansion device in frequent snow disaster area
雪灾频发区桥梁伸缩装置抗冰除雪一体化设计研究

摘要

雪灾频发地区桥梁的运行安全和通行能力易受低温冰雪环境的严重影响，伸缩装置常因冰雪堵塞、冻胀和磨损而失效，导致桥梁结构损伤及交通事故风险增加。为解决这一问题，研究提出一种桥梁伸缩装置抗冰除雪一体化设计方法。通过分析雪灾环境下伸缩装置的受力特征与热传导规律，结合高效融雪材料、低温防冻结构及主动加热系统，实现抗冰与除雪的同步协作。该设计不仅提升伸缩装置在极端气候下的可靠性和耐久性，还降低养护频率和运行成本，为寒区桥梁安全提供有效技术支撑。

Abstract

In regions prone to frequent snow disasters, the operational safety and traffic capacity of bridges are significantly affected by low-temperature ice conditions. Expansion joints often fail due to ice blockage, frost heave, and wear, leading to structural damage and increased traffic accident risks. To address this issue, this study proposes an integrated design method for ice resistance and snow removal in bridge expansion devices. By analyzing the stress characteristics and heat conduction patterns of expansion joints under snowy conditions, combined with high-efficiency de-icing materials, low-temperature anti-freezing structures, and active heating systems, the design achieves synchronized collaboration between ice resistance and snow removal. This approach not only enhances the reliability and durability of expansion joints in extreme climates but also reduces maintenance frequency and operational costs, providing effective technical support for bridge safety in cold regions.