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首页> 外文期刊>International journal of crashworthiness >Structural qualification of a developed GFRP-reinforced TL-5 concrete bridge barrier using vehicle crash testing
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Structural qualification of a developed GFRP-reinforced TL-5 concrete bridge barrier using vehicle crash testing

机译：使用车辆碰撞测试开发的GFRP增强的TL-5混凝土桥梁屏障的结构鉴定

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摘要

Corrosion of steel reinforcement due to environmental effects is a major cause of deterioration problems in bridge barriers. Glass fibre reinforced polymer (GFRP) bars, not only addresses this durability problem but also provides exceptionally high tensile strength. A recent design work conducted at Ryerson University on a test level 5 (TL-5) bridge barrier considered the use of 16 and 12-mm diameter GFRP bars as vertical reinforcement in the barrier front and back faces, respectively, with 16-mm diameter GFRP bars as horizontal reinforcement in the barrier wall, all at 300 mm spacing. The connection between the deck slab and the barrier wall utilised the GFRP headed end bars for proper anchorage. This paper summarises the procedure and the results of a recent vehicle crash test conducted on the developed barrier. The crash test involved the 36 000 V tractor trailer impacting the barrier at a nominal speed and angle of 80 km/h and 15 degrees, respectively. Crash test results satisfied crash test evaluation requirements including structural adequancy, occupant risk and vehicle trajectory after collision. Estimates of the equivalent impact force and associated energy absorbed by the barrier wall due to vehicle impact were deduced.
机译：由于环境影响而造成的钢筋腐蚀是造成桥梁障碍物恶化问题的主要原因。玻璃纤维增​​强聚合物（GFRP）钢筋不仅解决了耐久性问题，而且还提供了极高的拉伸强度。瑞尔森大学（Ryerson University）最近在5级测试（TL-5）桥梁护栏上进行的设计工作考虑了使用直径为16毫米和12毫米的GFRP筋分别在直径为16毫米的护栏正面和背面进行垂直加固GFRP筋作为隔墙中的水平钢筋，间距均为300 mm。楼板与挡土墙之间的连接利用GFRP端头的端杆进行适当的锚固。本文总结了在已开发的障碍物上进行的最新车辆碰撞测试的过程和结果。碰撞测试涉及36 000 V拖拉机拖车以标称速度和80 km / h和15度的角度分别撞击障碍物。碰撞测试结果满足碰撞测试评估要求，包括结构上的充分性，乘员风险和碰撞后的车辆轨迹。推导了等效冲击力的估计值以及由于车辆碰撞而被阻挡壁吸收的相关能量。

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