When discussing the standard for setting corrugated guardrails on highways, we have to mention that the selection of crash avoidance specification grades is crucial for road safety. According to the current highway corrugated guardrail setting standard, the commonly used collision avoidance specification grades on the highway include A, SB, SA and SS and other three corrugated guardrails.
Each of these different levels of guardrails has its own design and application characteristics and is designed to provide the best possible safety guarantee according to the actual situation of the road section.
First, let's look at Class A crash barriers. As a commonly used safety facility in the ordinary section of the expressway, the A-level guardrail is characterized by the combination of three-wave guardrail plate and round pipe column.
This design is cost-effective while ensuring sufficient strength. Class A guardrails can effectively prevent vehicles from running out of control and rushing off the road, reducing the possibility of accidents. At the same time, due to its relatively low cost, it is widely used in the wide laying of highways.
However, on sections of the road with high speeds and high risk factors, Class A guardrails may not meet the higher safety requirements. In this case, it is necessary to adopt SB level crash barriers. The SB-class guardrail also uses three-wave guardrail panels, but the columns are designed with square tubes. This design results in a higher overall strength of the guardrail, which is better able to withstand the impact of the vehicle.
SB anti-collision guardrails are mostly set in straight and curved sections of highways, especially in sections with fast speed and large traffic flow, SB level guardrails can effectively reduce the severity of accidents and provide higher safety guarantees for drivers and passengers.
In some special road sections, such as bridges, side ditches and other places, the requirements for guardrails are more stringent. In this case, SA and SS crash barriers are required.
On the basis of the SB class, the SA and SS guardrails also need to add beams and upper columns. This design makes the overall structure of the guardrail more stable and better able to withstand the impact and rollover forces of the vehicle.
When designing and selecting a corrugated guardrail, there are other factors to consider in addition to the crash avoidance specification level. For example, factors such as traffic flow, vehicle speed, and topography will all have an impact on the choice of guardrails.
In addition, factors such as the coordination of the guardrail with the surrounding environment, as well as the installation and maintenance cost of the guardrail, need to be considered. Therefore, in practical application, it is necessary to consider comprehensively according to the specific situation and select the most suitable guardrail specification level and design scheme.
In addition to the selection of corrugated guardrails, we also need to pay attention to the maintenance and management of guardrails. As an important part of highway safety facilities, the maintenance and management of corrugated guardrails are very important to ensure road safety. In routine maintenance, the damaged part of the guardrail needs to be regularly inspected and repaired to ensure that it is always in good working order.
In short, the corrugated guardrail setting standard of the expressway is of great significance for ensuring road safety. When selecting and setting guardrails, it is necessary to comprehensively consider the actual situation of the road section and select the most suitable anti-collision specification level and design scheme.