摘要
波形护栏通过阻挡、缓冲、导向来降低失控车辆的碰撞损失,保障司乘人员的生命安全,是道路交通安全防护的重要设施。由于传统的线弹性有限元模型无法反映护栏发生塑性屈曲变形的真实情况,提出采用能量法对波形护栏的防撞性能进行验证,以佛山市某道路二期工程为例,对轻质泡沫土路段波形护栏的安全性能展开研究。研究表明,采用能量法计算出波形护栏的结构破损极限荷载大于设计碰撞力,满足波形护栏的防撞性能要求。
The corrugated guardrail is an important facility for road traffic safety as it can reduce the collision loss of out-of-control vehicles by blocking,buffering,and guiding,and ensure the life safety of occupants.Because the traditional linear elastic finite element model cannot reflect the true condition of the plastic buckling deformation of the guardrail,this paper proposed using the energy method to verify the anti-collision property of the corrugated guardrail.Based on the secondary engineering of a road in Foshan City,this paper studied the safety performance of the corrugated guardrail in the lightweight foam soil section.The results showed that the structural damage limit load of the corrugated guardrail calculated by the energy method was higher than the designed collision force,which met the anti-collision requirement of the corrugated guardrail.
作者
顾维
GU Wei(Hunan Communications Research Institute Co.,Ltd.,Changsha,Hunan 410015,China)
出处
《山西交通科技》
2023年第6期62-67,共6页
Shanxi Science & Technology of Transportation
关键词
波形护栏
能量法
内弧形破坏
数值仿真
防撞性能分析
corrugated guardrail
energy method
inward curvature destruction
numerical simulation
anti-collision analysis
