高速公路桥梁护栏等级提升改造设计方案研究  

Research on the Design Scheme for Upgrading the Grade of Expressway Bridge Guardrail

作　　者：孟云伟 陈康 张引 李斌斌 青光焱 秦文 MENG Yunwei;CHEN Kang;ZHANG Yin;LI Binbin;QING Guangyan;QIN Wen(College of Transport and Transportation,Chongqing Jiaotong University,Chongqing 400074,China;School of Civil Engineering,Chongqing Jiaotong University,Chongqing 400074,China;China Merchants Roadway Information Technology(Chongqing)Co.,Ltd.,Chongqing 400067,China;Southeast Operation Branch of Chongqing Expressway Group Co.,Ltd.,Chongqing 401147,China)

机构地区：[1]重庆交通大学交通运输学院,重庆400074 [2]重庆交通大学土木工程学院,重庆400074 [3]招商局公路信息技术(重庆)有限公司,重庆400067 [4]重庆高速公路集团有限公司东南营运分公司,重庆401147

出　　处：《交通节能与环保》2024年第5期210-214,共5页Transport Energy Conservation & Environmental Protection

基　　金：重庆市研究生联合培养基地(JDLHPYJD2020029)。

摘　　要：桥梁护栏防护等级的提升,能满足所在的高速公路路段安全快速通行的要求。本文结合重庆市某段高速公路桥梁混凝土护栏改造项目的工程实际,分析了桥梁护栏的典型结构型式,提出了混凝土墙体式、组合型两种改造方案,进行了技术、经济、对交通影响程度等方面的对比,推荐选用混凝土墙体式改造方案为推荐方案。对该方案改造后的护栏进行了承载能力验算,结果显示,护栏总的横向承载力的验算结果均满足要求,可保障桥梁护栏的防护等级提升至SS级。The improvement of the protection level of bridge guardrails can meet the requirements for safe and fast passage of the highway section where they are located.It combines the engineering practice of an expressway bridge concrete guardrail renovation project in Chongqing.The typical structural types of bridge guardrails are analyzed and two renovation schemes,i.e.concrete wall and combination type are proposed and compared in terms of technology,economy and traffic impact.It is recommended to choose the concrete wall type renovation scheme as the recommended scheme.The load-bearing capacity of the renovated guardrail is checked,and the results shows that the total lateral load-bearing capacity of the guardrail meet the requirements,which can ensure that the protection level of the bridge guardrail is raised to SS level.

关 键 词：高速公路 桥梁护栏 防护等级 墙体式护栏 

分 类 号：U417.1[交通运输工程—道路与铁道工程]