The difference between crash barrier class A and SB class.
With the increasing attention to traffic safety, the role and performance of anti-collision guardrails, as a component of highway traffic safety facilities, have attracted more and more attention. Anti-collision barriers are divided into different grades, of which Class A and SB are the two most common. This article will detail the difference between Class A and Class SB of crash barriers.
Class A is more capable of bearing impact than Class SB, and the addition of an M after the level specifically refers to the guardrail used for the ** divider. For example, SA is a SA class for the guardrail of the ** divider, and the SBM is the same.
There are many ways to classify corrugated guardrails, and the classification criteria can be the installation site or the guardThe swing form of the steeplechase can also be a collision avoidance level. The so-called highway corrugated guardrail grade actually refers to the collision resistance level of the corrugated guardrail.
According to the anti-collision level, the types of corrugated guardrails can be divided into five levels: B, A, SB, SA, SS, among which Class A is used for special highways, and S-level guardrails belong to reinforced guardrails, which are suitable for particularly dangerous road sections on both sides of the road.
In terms of the material style of each grade corrugated guardrail, the difference between the SB corrugated anti-collision fence and other such as A-class B-level corrugated guardrail is that the guardrail plate used in the A-class B-level corrugated guardrail is a two-wave corrugated guardrail board, and the product shape is basically no different, while the corrugated guardrail plate used in the SB-level corrugated anti-collision guardrail is a three-wave corrugated guardrail board.
1. Grade A anti-collision guardrail.
Anti-collision barrier Class A is a high-strength, high-rigidity guardrail, with strong impact resistance, which can effectively absorb the energy of the vehicle during collision and reduce the injury to vehicles and pedestrians. Class A guardrail is made of high-strength steel, which has been treated by special technology, which has anti-corrosion, anti-rust, wear-resistant and other properties, and has a long service life.
The height of the A-class guardrail is generally 1More than 2 meters, installed on both sides of the road or on the first divider, can effectively prevent the vehicle from crossing the lane or rushing out of the road when it is out of control, and reduce the occurrence of traffic accidents. At the same time, the A-level guardrail can also provide a safe space for pedestrians to cross the street and improve the safety factor of pedestrians.
2. Anti-collision guardrail SB level.
The SB level of the crash barrier is a relatively weak guardrail, and its impact resistance is somewhat worse than that of the A-level guardrail. SB guardrails are usually made of steel and coated with anti-corrosion and anti-rust coatings to improve their service life. Due to its relatively low strength and rigidity, SB class guardrails are mainly used at lower vehicle speeds or in some specific areas of the road, such as parking lots, community roads, etc.
Compared with the A-class guardrail, the height of the SB-class guardrail is lower, generally at 06 meters to 12 meters between. Due to their weak protective capacity, SB guardrails are mainly used at lower speeds and in sections with less traffic, or as auxiliary safety features.
3. Summary. The difference between the A level and the SB level of the anti-collision barrier is mainly manifested in the following aspects:
1.Impact resistance: Class A guardrail has strong impact resistance, which can effectively absorb the energy of the vehicle during collision and reduce the damage to vehicles and pedestriansThe impact resistance of the SB-class guardrail is relatively weak.
2.Materials and technology: A-grade guardrail is made of high-strength steel, which has been treated by special technology and has anti-corrosion, anti-rust, wear-resistant and other propertiesSB guardrails are usually made of ordinary steel, and the surface is coated with anti-corrosion and anti-rust coatings.
3.Installation location and use: Class A guardrails are usually installed on highways, first-class highways and other sections with high speed and large traffic flow, as well as areas that need to provide strong protection, such as ** separation belts, protection on both sides, etc.;The SB barrier is mainly used for lower speed and less traffic, or as an auxiliary safety feature.
4.Height and construction: The height of the A-class guardrail is generally 1Above 2 meters, it can take a variety of forms and structures;The height of the SB-level guardrail is generally 06 meters to 1Between 2 meters, the structure is relatively simple.
To sum up, the differences between Class A and Class SB of anti-collision barriers are mainly reflected in impact resistance, materials and processes, installation location and use, height and construction. In practical application, it is necessary to choose the appropriate guardrail grade according to the specific conditions of the road to improve the safety and reliability of road traffic.