JTJ074-94 was published in 1994 and revised in 2006. The biggest difference between before and after is the requirement of crash performance. In JTJ074-94, the anti-collision grade is B, and the anti-collision energy is 70kJ. In JTG/T D81-2006, the anti-collision grade is A, and the anti-collision energy is 160kJ. Because of the upgrade of the requirement of crash performance, the important question is to improve the protection capability of the guardrail in highway reorganization and expansion. However, the double w-beam barrier is the most domestic and applicable in many transformation methods, but the crash performance has not been proved. The protection ability of double corrugated beam barriers has been verified by simulation experiment. This simulation experiments also lay a foundation for the real vehicle crash test.
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机译：JTJ074-94于1994年发表并于2006年修订。之前和之后的最大差异是崩溃表现的要求。在JTJ074-94中，防碰撞等级是B，防碰撞能量为70kJ。在JTG / T D81-2006中，防碰撞等级是A，防碰撞能量为160kJ。由于升级了崩溃绩效的要求，重要的问题是提高公路重组和扩张的护栏的保护能力。然而，双面梁屏障是最多的，在许多转化方法中适用，但碰撞性能尚未得到证实。通过仿真实验验证了双波纹束屏障的保护能力。该仿真实验还为真正的车辆碰撞测试奠定了基础。
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