论文部分内容阅读
我国每年有1/3的死亡事故发生在车辆与路侧碰撞的单车事故中,且呈逐年上升趋势。《公路交通安全设施设计细则》(JTG/T D81-2006),对新建桥梁安全设施的修建做出了相关指导性意见。但已建桥梁的安全设施如何进行加强,则未有任何规范进行规定。针对这种情况,笔者建立了车辆碰撞防护体的数值模型,分析了前翻条件下车辆速度与护栏要求高度的数值关系、侧翻条件下车辆速度与护栏高度的数值关系以及车辆速度与防护体所受冲击力的数值关系。文章研究的结果对防护体设计有一定的指导作用。
One-third of China’s annual fatal accidents occur in the single-vehicle collision between vehicles and roadsides, and they are on the rise year by year. The “Design Rules of Highway Traffic Safety Facilities” (JTG / T D81-2006) made relevant guidance on the construction of new bridge safety facilities. However, how to enhance the safety facilities of the existing bridges has not been stipulated by any norms. In view of this situation, the author establishes the numerical model of vehicle collision protection body, analyzes the numerical relationship between the vehicle speed and the required height of the guardrail under the condition of rollover, the relationship between the vehicle speed and the guardrail height under rollover condition, The impact of the numerical relationship. The result of the article’s research has some guidance to the design of the protective body.