陈海公路波形梁护栏性能提升设计分析

Performance Improvement Design of Corrugated Beam Guardrail on Chen Hai Highway

为早期建成的波形梁护栏拆除更换提供较为详细的分析论证以及技术依据,以陈海公路中段为例,首先,对现状护栏性能进行系统分析,包括防护层剥落率、横梁中线高度以及直线段顺直度等;其次,对现状沿线障碍物、下穿通道和涵洞以及高填土路段进行调查统计;再次,对道路线型、净区宽度、现状边坡高度、交通流量以及重车比例进行详细数据分析,同时对比新老规范规格尺寸以及防护能量等参数;最后,在考虑经济效应的情况下针对不同路段提出有针对性的改造方案以提升护栏相关防护性能,消除交通安全隐患,减少恶性交通事故的发生。

In order to provide a more detailed analysis and technical basis for the removal and replacement of the earlyformed corrugated beam guardrails.Taking Chen Hai Highway as an example,firstly,analyzing the performance of guardrail,including the peeling ratio of protective layer,the height of center line and straightness of straight section;Secondly,the paper investigates and counts the obstacles,underpass,culvert and high fill sections along the line.Thirdly,detailed analysis of road alignment,clear zone width,current slope height,traffic flow,and proportion of heavy vehicles are made.At the same time,comparing the specifications,dimensions and protection energy in the new and old specifications.Finally,under the consideration of economic effect,the paper puts forward targeted reconstruction scheme for different sections to improve the protective performance of guardrail,eliminate hidden traffic dangers and reduce the occurrence of malignant traffic accidents.