惠州304不锈钢复合管现货 花都桥面护栏 道路隔离栏

Huizhou 304 stainless steel composite pipe spot Huadu bridge deck guardrail road barrier

受碰撞后的护栏变形程度：受碰撞后护栏的大动态变形量不应超过可允许的变形距离。

Deformation degree of guardrail after collision: the large dynamic deformation of guardrail after collision shall not exceed the allowable deformation distance.

该原则主要是考虑车辆碰撞后是否允许一定的变形。

The principle is mainly to consider whether a certain deformation is allowed after vehicle collision.

例如：桥梁结构物一般都位于地面以上很高处，过大的变形容易导致护栏。

For example: bridge structures are generally located at a very high place above the ground, and excessive deformation is easy to cause guardrails.

承受出现除车辆碰撞力以外的其他荷载类型，使受力变得更为复杂。

It is more complicated to bear loads other than vehicle collision force.

而钢护栏一般较砼护栏柔一些，若需要两者受碰撞后的变形一致。

The steel guardrail is generally softer than the concrete guardrail. If it is necessary, the deformation of the two guardrails will be the same after collision.

则钢护栏需要更大的刚度，对钢护栏材料也相应较高。

The steel guardrail needs more rigidity, and the steel guardrail material is also relatively high.