摘要
为了研究无种植土中央分隔带优化型混凝土护栏的安全性能,该文采用计算机仿真、台车试验及实车足尺碰撞试验相结合的技术手段进行分析论证,提出通过加强支撑块来提高无种植土护栏抗倾覆能力的方案,优先确定了护栏墙体间通铺设置20 cm高支撑块的方案,采用最不利的大型货车对护栏方案的安全性能进行评价。结果表明:无种植土中央分隔带优化型混凝土护栏防护等级达到SAm级,在实际应用中可为公路车辆提供有效的安全防护。
In order to study the safety of optimized concrete median barrier without planting soil,the technology combining computer simulation,sled test,and full-scale impact test of real vehicles was adopted for analysis and verification.In addition,a scheme was proposed to improve the anti-overturning ability of the barrier without planting soil by strengthening the supporting block,and the scheme of setting a 20 cm-high supporting block between the barrier walls was optimized.The safety of the barrier scheme was evaluated by taking the most unfavorable large truck as an example.The results show that the protection level of the optimized concrete median barrier without planting soil is SAm,and the actual application of barriers will provide effective safety protection for vehicles on highways.
作者
钟纯耀
马晴
李扬帆
龚帅
刘思源
闫书明
ZHONG Chunyao;MA Qing;LI Yangfan;GONG Shuai;LIU Siyuan;YAN Shuming(Guangdong Provincial Freeway Co.,Ltd.,Guangzhou,Guangdong 510660,China;Bejing Hualuan Traffic Technology Co.,Ltd.,Beijing 100071,China)
出处
《中外公路》
2024年第3期246-252,共7页
Journal of China & Foreign Highway
基金
广东省科技计划项目(编号:2021B1111610002)。
关键词
中央分隔带
混凝土护栏
无种植土
计算机仿真
实车碰撞试验
median
concrete barrier
without planting soil
computer simulation
impact test of real vehicles
