高速公路旧桥桥梁护栏提升发展研究  

Guardrail Improvement for Old Bridges in Expressways

作　　者：刘新萍 张世辉 尚钟平 韩跃 章强 LIU Xinping;ZHANG Shihui;SHANG Zhongping;HAN Yue;ZHANG Qiang(Jiangsu Guoqiang Traffic Science&Technology Co.,Ltd.,Nanjing,Jiangsu 210000,China)

机构地区：[1]江苏国强交通科技有限公司,江苏南京210000

出　　处：《中外公路》2024年第2期260-266,共7页Journal of China & Foreign Highway

摘　　要：针对旧桥护栏防护等级不足,在不损伤桥梁主体结构的同时,利用有限元分析研发设计一种适用于旧桥低矮混凝土墙式护栏的组合式护栏,通过实车足尺碰撞试验验证防护等级达到SA级。采用新型高强合金钢材料设计,重量较轻、造型美观;无需拆除原有旧桥混凝土基础,施工方便、造价较低;在桥梁护栏改造等级提升项目中值得推广应用。In view of the insufficient protection grade of the guardrail in old bridges,a combined guardrail suitable for the low concrete wall guardrail in the old bridge was designed and developed by using finite element analysis while not damaging the main structure of the bridge.The protection grade was verified to reach SA grade through a full-scale vehicle collision test.The guardrail was designed with new high-strength alloy steel,with light weight and beautiful appearance.There was no need to dismantle the original concrete foundation in the old bridge,which is convenient for construction and requires low cost.Therefore,it is worth being popularized and applied in the project of reconstruction and improvement of bridge guardrails.

关 键 词：桥梁护栏 组合式护栏 旧桥改造 护栏 护栏等级提升 

分 类 号：U491.59[交通运输工程—交通运输规划与管理]