基于双重防护理念的上跨线桥中墩防护设计  

Protection Design of Middle Piers of Overpass Bridges Based on Double Protection Concept

作　　者：吕思忠 王新 郭建民 刘思源 李玉鑫 杨福宇 LYU Sizhong;WANG Xin;GUO Jianmin;LIU Siyuan;LI Yuxin;YANG Fuyu(Shandong Hi-Speed Company Limited,Jinan,Shandong 250014,China;Beijing Hualuan Traffic Technology Co.,Ltd.,Beijing 100070,China)

机构地区：[1]山东高速股份有限公司,山东济南250014 [2]北京华路安交通科技有限公司,北京市100070

出　　处：《中外公路》2024年第4期163-170,共8页Journal of China & Foreign Highway

基　　金：山东省交通运输厅科技计划项目(编号:2020B24)。

摘　　要：该文总结分析上跨线桥中墩位置的碰撞事故类型,发现防正碰和防剐蹭是桥墩防护的两项重要需求。基于此提出了双重防护新理念及对应技术方案。第一重防护通过在桥墩外围设置混凝土护栏或船形加高构件,以防止车辆正碰桥墩;第二重防护为桥墩自体通过包裹钢板或泡沫铝板以防止车辆剐蹭桥墩。通过计算机仿真和单元试验验证桥墩防护结构方案的安全性,评估其在防正碰和防剐蹭的双重作用。结果表明:该研究提出的设计方案能有效地保护人、车、桥的安全,降低事故严重程度及损失,有助于桥墩后期维护及耐久性保障,已在实际工程中得到应用与认可。The collision accident types of middle piers of overpass bridges were summarized and analyzed,and it was proven that anti-collision and anti-scratching were two important requirements of pier protection.Then,the new concept of double protection and corresponding technical schemes were put forward.The first protection adopted the way of setting concrete barriers or ship-shaped elevating members on the periphery of the pier to prevent vehicles from impacting the pier,and the second protection used the self-wrapped steel plate or aluminum foam plate to prevent vehicles from scratching the pier.The safety of the pier protection structure schemes was verified by computer simulation and unit test,and their roles of anti-collision and anti-scratching were evaluated.The results show that the safety of people,vehicles,and bridges can be better protected,and accident severity and damage are reduced.Therefore,the schemes are beneficial for later maintenance and durability of bridge piers and have been applied and recognized in practical engineering.

关 键 词：公路安全 桥墩防护 材料耐久性 结构耐久性测试 锤击单元试验 

分 类 号：U491.5[交通运输工程—交通运输规划与管理]