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  • 怎么樣選擇橋梁護欄
  • 本站編輯:杭州楷高實業有限公司發布日期:2019-06-02 15:38 瀏覽次數:

橋梁的外側和中分隔帶有必要設置梁護欄。橋梁護欄挑選應考慮一下要素。

1、橋梁護欄的防撞性能,選取的護欄方式在強度上有必要能有用吸收規劃磕碰能量,阻撓相應失控車輛躍出橋外或者進入對向車道,并使其正確改動行進方向。

2、受磕碰后的護欄變形程度受磕碰后護欄的最大動態變形量不贏超越可容許的變形間隔。

3、環境和景象要求:

①鋼橋應選用金屬梁柱式橋梁護欄;

②對景象有特殊要求的橋梁宜挑選梁柱式橋梁護欄或組合式橋梁護欄;

③積雪嚴峻的區域,宜選用金屬梁柱式或組合式橋梁護欄;

④為減少橋梁自重、減輕車輛磕碰荷載對橋面板的影響,宜選用金屬梁柱式護欄;

⑤跨過大片水域的特大橋或橋下凈空大于或等于10m時,宜選用組合式或鋼筋混泥土墻式橋梁護欄;

⑥二級及以上等級公路小橋、通道、明涵宜選用與相鄰的路基護欄相同的型式。

4、護欄的全壽命周期本錢除考慮護欄的初期建設本錢外,海英考慮投入使用后的維護本錢。

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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.