(1) The concrete guardrail prevents the vehicle from getting out of the way out, and it is almost non -deformation when the vehicle bumps. All types of concrete guardrail are suitable for the central separated road section and more risky roadside guardrails. The speed is slow, and the whole line shape is difficult to smooth. The overall concrete guardrail has high anti -dizziness and cost, and it is not easy to bury the pipelines and cannot add pipelines in the future.

(2) The waveform guardrail has a certain rigidity and patience. It is simply replaced with repair when damage, and it has a good visual field induction function. It can harmonize with the road line and beautiful appearance. When it is used for the central separation zone, plant anti -glare, beautify the environment and highway scenes, and save costs. The construction process of wave -shaped beam fence is simple and fast. At present, there are many manufacturers and construction units, which are easy to choose.

(3) The cable guardrail has a beautiful appearance, suitable for highways in the scenic area. Due to the work within the range of elasticity, it can be reused and simply corrected. It is suitable for the snowy area in the north. Small, but the construction of the cable guardrail is complicated, the end columns are difficult to repair, it is not suitable for use on the small radius route section, the visual field induction is poor, and the length of the formation is not economical.

Based on the characteristics of different waveform guardrails above, the author advocates that when the central separation band is wide, the waveform beam guardrail should be selected first, followed by a separate concrete guardrail. Cable guardrails are selected for highways in the scenic area, and cultivation of cultivation is used. Try not to choose all -type concrete guardrails. Due to this situation, the cost of the road on both sides of the fence is added, and the cost of anti -glance or anti -glare board (about 150,000 yuan per kilometer). , And it is beautiful. When the terrain is constrained, when the central separation band is narrow, a combined waveform beam guardrail or a whole concrete fence can be selected. Regarding the wave -side waveform guardrail, the waveform beam guardrail is generally used, and the concrete guardrail is used in the risk road section. Regarding the long -distance highway center separation of the guardrails, different methods should be used. Perhaps using non -simple plants for anti -glare to reduce the monotonicity of road users when driving, and decrease the event rate.