中山公路防护栏 市政人行道护栏 东莞不锈钢桥梁围栏
Zhongshan highway guardrail municipal sidewalk guardrail Dongguan stainless steel bridge fence
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.