广州定做不锈钢碳素钢复合管护栏 佛山河道护栏
Guangzhou customized stainless steel carbon steel composite pipe guardrail Foshan River guardrail
桥梁护栏的防撞性能：所选取的护栏型式在强度上必须能有效的吸收设计碰撞能量。
Anti collision performance of bridge guardrail: the selected guardrail type must be able to effectively absorb design collision energy in strength.
阻止相应失控车辆越出桥外或进入对向车道并使其正确改变行驶方向。
Prevent the corresponding out of control vehicle from crossing the bridge or entering the opposite lane and make it change the driving direction correctly.