高速公路旧桥防撞护栏提升设计方案  

Design Scheme for Reconstruction of Anti-collision Guardrail of Old Highway Bridge

作　　者：张茜[1] ZHANG Xi(China Merchants Chongqing Communications Technology Research and Design Institute Co.,Ltd.,Chongqing China 400067)

机构地区：[1]招商局重庆交通科研设计院有限公司,重庆400067

出　　处：《公路交通技术》2020年第6期120-126,共7页Technology of Highway and Transport

摘　　要：随着现役公路桥侧防撞护栏役龄增加,旧桥护栏设置已不能满足日益加重的交通需求,亦不符合现行交安规范,此类护栏的设施维护及安全提升工作迫在眉睫。从工程实际出发,详细分析了桥侧护栏提升改造方案,在满足现行规范构造要求及护栏防撞等级的前提下,综合考虑工程造价、工程施工、工期影响等诸多因素,提出了可行的提升设计方案和计算方法,供类似工程参考。With the increase of service age of anti-collision guardrail of existing highway bridges,the setting of old bridge guardrail can not meet the increasing traffic demand,and also does not conform to the current traffic safety standards.Therefore,it is urgent to maintain and improve the safety of such guardrails.Starting from the actual project,this paper analyzes the improvement plan of the bridge side guardrail in detail.Under the premise of meeting the current specification structure requirements and the guardrail anti-collision grade,comprehensively considering the project cost,project construction,construction period and other factors,the feasible upgraded design scheme and calculation method of the project are proposed,which provide reference for similar projects.

关 键 词：防撞护栏 护栏提升 设计方案 施工要点 

分 类 号：U491.59[交通运输工程—交通运输规划与管理]