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年发布，2006年进行了修订。前后的最大区别是对碰撞性能的要求。在JTJ074-94中，防撞等级为B，防撞能量为70kJ。在JTG / T D81-2006中，防撞等级为A，防撞能量为160kJ。由于对撞车性能要求的提高，重要的问题是提高护栏在公路改扩建中的防护能力。但是，双w形电子束屏障是最国内的并且可用于许多转换方法，但是碰撞性能尚未得到证明。仿真实验验证了双层波纹梁护栏的防护能力。该模拟实验还为实际的车辆碰撞测试奠定了基础。
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