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公路护栏网的结构组成和防护性能

      公路护栏网的结构组成和防护性能：
      1、公路护栏网的结构组成
      其整体由分节的框架单元组成，底部装有万向轮，移动和开启方便，满足使用功能;节与节间采用防盗螺栓，具有良好的防盗防任意开启功能;端部和中央分隔带护栏通过导向板平顺衔接过渡，对失控车辆有良好的导向作用;钢管横梁内设预紧力钢纹线，通过钢管和钢纹线协同受力保证护栏防撞能力。
      2、公路护栏网的防护性能
      根据规范A级护栏网碰撞条件对防撞活动护栏网的安全性能进行评价1. 5 t的小客车以100 krn/}速度20°角碰撞护拦，评价碰撞过程中乘员安全性和碰撞后车辆运行轨迹;10 t大客车以60km/h速度20°角碰撞护栏，评价碰撞过程中车辆运行轨迹和护栏最大横向动态变形量。安全性能测试数据应满足规范规定评价标准要求。
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