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  • 怎么样选择桥梁护栏
  • 本站编辑:杭州楷高实业有限公司发布日期:2019-06-02 15:35 浏览次数:

桥梁的外侧和中分隔带有必要设置梁护栏。桥梁护栏挑选应考虑一下要素。

1、桥梁护栏的防撞性能,选取的护栏方式在强度上有必要能有用吸收规划磕碰能量,阻挠相应失控车辆跃出桥外或者进入对向车道,并使其正确改动行进方向。

2、受磕碰后的护栏变形程度受磕碰后护栏的比较大动态变形量不赢超越可容许的变形间隔。

3、环境和景象要求:

①钢桥应选用金属梁柱式桥梁护栏;

②对景象有特殊要求的桥梁宜挑选梁柱式桥梁护栏或组合式桥梁护栏;

③积雪严峻的区域,宜选用金属梁柱式或组合式桥梁护栏;

④为减少桥梁自重、减轻车辆磕碰荷载对桥面板的影响,宜选用金属梁柱式护栏;

⑤跨过大片水域的特大桥或桥下净空大于或等于10m时,宜选用组合式或钢筋混泥土墙式桥梁护栏;

⑥二级及以上等级公路小桥、通道、明涵宜选用与相邻的路基护栏相同的型式。

4、护栏的全寿命周期本钱除考虑护栏的初期建设本钱外,海英考虑投入使用后的维护本钱。

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The outer and middle separation of the bridge is accompanied by necessary girder barriers. The selection of bridge guardrails should consider the elements.
1, the collision proof performance of the bridge guardrail, the selected guardrail method is necessary to be able to use the absorption plan to touch the energy, obstruct the corresponding runaway vehicle from jumping out of the bridge or entering the opposite lane, and make it change the direction of travel correctly.
2, the degree of deformation of the guardrail after being knocked by the maximum dynamic deformation of the guardrail does not exceed the allowable deformation interval.
3, the environment and the scene require:
1 Steel bridge should choose metal beam column bridge guardrail;
The bridge with special requirements for the scene should choose the girder bridge guardrail or the combined bridge guardrail;
3 The area with severe snow is suitable for choosing metal beam column or combined bridge guardrail;
4 In order to reduce the weight of the bridge and reduce the impact of vehicle impact load on the bridge panel, it is appropriate to choose metal beam column guardrail;
5 When the clearance of a Super bridge or bridge across a large area of water is greater than or equal to 10 M, combined or reinforced concrete wall bridge guardrails should be used;
Highway bridges, passages, and clear culverts of grades II and above should be of the same type as the adjacent roadbed guardrails.
4, guardrail's life cycle capital in addition to the initial construction capital of the guardrail, Haiying considers the use of the maintenance capital.

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