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无种植土中央分隔带优化型混凝土护栏安全性研究

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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.
Safety of Optimized Concrete Median Barrier without Planting Soil
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.

medianconcrete barrierwithout planting soilcomputer simulationimpact test of real vehicles

钟纯耀、马晴、李扬帆、龚帅、刘思源、闫书明

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广东省高速公路有限公司,广东 广州 510660

北京华路安交通科技有限公司,北京市 100071

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

广东省科技计划

2021B1111610002

2024

中外公路
长沙理工大学

中外公路

CSTPCD
影响因子:0.626
ISSN:1671-2579
年,卷(期):2024.44(3)
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