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为了提高武易高速公路双向行驶匝道区域的行车安全性,针对目前应用于高速公路护栏的不足之处,提出了一种新型四级(SB)多功能型护栏,该护栏采用模块化设计,刚度合理,在车辆碰撞产生横向变形较小的条件下具有较好的缓冲吸能功能。为验证护栏是否满足《公路护栏安全性能评价标准》(JTG B05-01-2013)规定的四级(SB级,防护能量≥280kJ)防护等级的要求,依据评价标准采用小型客车、中型客车、大型货车对护栏进行了实车足尺碰撞试验,试验结果表明新型四级(SB)多功能型护栏满足评价标准要求,护栏最大横向动态变形值满足武易高速公路实际要求,可以应用于工程实际。
In order to improve the traffic safety in the two-way traffic ramp of Wu-Yi Expressway, a new four-stage (SB) multifunctional guardrail is proposed in view of the shortcomings of the current application in the guardrail of the expressway. The guardrail adopts the modular design, Reasonable, in the vehicle collision produces less lateral deformation under the conditions of better buffering energy absorption. In order to verify whether the guardrails meet the requirements of the protection level of four levels (SB level, guard energy≥280kJ) stipulated in the Evaluation Standard for Safety of Highway Fence (JTG B05-01-2013), the assessment criteria are based on the evaluation criteria of small bus, medium bus, The test results show that the new type four (SB) multifunctional guardrail meets the evaluation criteria and the maximum transverse dynamic deformation of the guardrail meets the actual requirements of Wuyi Expressway and can be applied to engineering practice.