黑龙江交通科技

针对山区高速公路桥梁在多荷载耦合作用下易出现位移过大、应力集中和振动衰减不足的问题，基于结构动力学与复合材料减震理论，提出在桥梁关键受力部位布设新型复合材料波纹管的技术路径。通过在昔阳至榆次高速公路木瓜河特大桥与潇河大桥开展现场监测与对比试验，建立位移-加速度-应力综合评价体系，系统分析安装前后结构动态响应差异。结果表明，波纹管减震装置可使纵向位移降幅达67.7%，峰值加速度下降62.4%，缝隙区域应力下降54.4%，显著提升桥梁能量耗散与疲劳延缓能力。创新点在于将复合材料波纹管引入高速公路桥梁减震领域，并形成可推广的监测和评估方法。

Addressing the issues of excessive displacement, stress concentration, and insufficient vibration damping in mountainous highway bridges under the combined effects of multiple loads, this paper proposes a technical approach based on structural dynamics and composite material vibration damping theory to install novel composite material corrugated tubes at critical load-bearing locations of the bridge. Through on-site monitoring and comparative tests conducted on the Mugua River Special Bridge and Xiaohe Bridge on the Xiyang-Yuci Expressway, a comprehensive evaluation system linking displacement, acceleration, and stress was established to systematically analyze the differences in structural dynamic response before and after installation. The results indicate that the corrugated pipe vibration damping device can reduce longitudinal displacement by 67.7%, peak acceleration by 62.4%, and stress in the joint area by 54.4%, significantly enhancing the bridge's energy dissipation and fatigue resistance capabilities. The innovative aspect lies in introducing composite material corrugated pipes into the field of highway bridge vibration reduction and developing a scalable monitoring and evaluation method.