高速公路挖方路段路侧障碍物防护设计研究  

Research on Protective Design of Roadside Obstacles on Excavated Sections of Expressways

作　　者：曹红艳 石萌萌 刘丽丽 CAO Hongyan;SHI Mengmeng;LIU Lili(Beijing Zhong jiao Hua'an Technology Co.,Ltd,Beijing 100088,China;Henan Transport Investment Group Co.,Ltd,Zhengzhou 450018,China;The Highway Development Center of Hebei Province,Shijiazhuang 050000,China)

机构地区：[1]北京中交华安科技有限公司,北京100088 [2]河南交通投资集团有限公司,郑州450018 [3]河北省公路事业发展中心,石家庄050000

出　　处：《交通工程》2024年第12期28-39,共12页Journal of Transportation Engineering

摘　　要：旨在通过研究高速公路挖方路段路侧障碍物防护的设置要求与特点,提高路侧安全性、经济性。首先,利用现有工作方法确定不同公路条件下路侧计算净区宽度,根据规范要求分析、对比不同建设期规范对于路侧护栏的设置要求,总结不同形式护栏的变形要求;其次,结合高速公路一般横断面分布情况和路侧障碍物的可能位置分别分析3种情况下公路的实际净区宽度、护栏实际设置要求与等级、实际空间对于护栏变形的适应性,并分别对常见的3种障碍物防护情形进行经济性对比。最后,以防护提升改造工程为例来说明实际情况,提出3种可行的解决方案并进行方案比选。总结了高速公路挖方路段路侧障碍物的防护现状及特点,提出优化设计改进建议,为设计工作者提供技术参考。结果表明:高速公路挖方路段障碍物防护处治面临多种状况,结合具体情况采取针对性、精细化的对策和措施进行改造,对于满足规范符合性、提高改造资金有效利用率并降低路侧事故发生概率、降低事故后果严重性等方面具有明显的社会效益和经济效益。In order to improve the safety and economy of expressway roadside obstacle protection in excavation sections,the relevant setting requirements and characteristics is studied.Firstly,using existing working methods to determine the calculated width of roadside clear zone under different highway conditions.Analyzing and comparing the requirements of different construction period standards for roadside guardrails,and summarizing the deformation requirements from different forms of guardrails.Secondly,based on the general cross-sectional distribution of expressway and the possible locations of roadside obstacles,the actual width of roadside clear zone,the installation requirements as well as levels of guardrail,and the adaptability of actual space to guardrail deformation are analyzed in three different situations.Economic comparisons are made for the three common obstacle protection situations.Finally,taking the guardrail upgrading renovation project as an example to illustrate the actual situation.Three feasible solutions were compared and selscted.Thus,the current situation and characteristics of roadside obstacle protection in excavation sections of expressway were summarized.The optimization design improvement suggestions were provided as technical reference to the designers.The result shows that the highway treatment of protection obstacles in excavation sections is facing various situations.Targeted and refined countermeasures and measures are taken based on specific situations for renovation.Which has significant social and economic benefits in specification compliance,improving the effective utilization rate of renovation funds,and reducing the probability as well as the consequences severity of roadside accidents.

关 键 词：交通安全 防护建议 分析研究 高速公路 净区宽度 路侧障碍物 

分 类 号：U491.59[交通运输工程—交通运输规划与管理]