摘要
现行公路规范规定护栏最高防撞能量为520 kJ,不能满足水资源保护区、水库、跨越干线铁路等特殊危险路段的安全防护需要,通过对北京市各高速公路交通流状况调查分析,对特殊路段护栏碰撞能量和碰撞试验条件进行研究,提出适合北京地区特殊防护路段护栏的碰撞试验条件为33 t重大货车以65 km/h速度、20°角碰撞护栏,碰撞能量为630 kJ,为新型高防护等级护栏的研究开发奠定基础。
The highest crash resistant energy of barrier stipulated in the current highway standard is 520kJ,which can not meet the safety protection demand in the special dangerous highway section of the water resource protection area,reservoir and railroad spanning lines.The article studies the crash energy and crash testing condition of crash barrier in the special highway section through the investigation and analysis of the traffic flow status of every expressway in Beijing City and puts forward the crash testing conditions suitable for the crash barrier in the special highway section of Beijing area,which are 33-t heavy-load truck by 65-km/h speed and 200-angle crash barrier.The crash energy is 630kJ to settle the foundation for studying and developing the new high-grade crash barrier.
出处
《城市道桥与防洪》
2010年第3期132-135,共4页
Urban Roads Bridges & Flood Control
关键词
高速公路
护栏
碰撞试验条件
交通流
调查
expressway
barrier
crash testing condition
traffic flow
investigation
