As an important part of highway safety facilities, the end of the high-speed anti-collision corrugated guardrail cannot be ignored. End treatment is not only related to the life safety of road users, but also directly related to the safety of vehicle driving and the smoothness of the road.
In this paper, we will elaborate on the necessity, design requirements, and treatment technology of end treatment, in order to improve the public's awareness of the importance of the end of high-speed anti-collision waveform guardrail.
First, the necessity of end treatment
The corrugated beam guardrail on the highway is an important facility to prevent vehicles from rushing out of the road and ensure driving safety. However, when a vehicle collides with a guardrail panel, the untreated end is often a safety hazard. In extreme cases, the vehicle may cause the end carriage to puncture the passenger compartment due to excessive impact force, resulting in serious consequences.
In addition, when a vehicle collides with a reinforced concrete guardrail head-on, it will generate a huge collision force, causing damage to the vehicle and passengers. Therefore, it is of great significance to improve road safety and reduce traffic accidents by reasonably dealing with the end of the corrugated beam guardrail.
Second, the design requirements of end treatment
When dealing with the ends, certain design requirements need to be followed. First of all, in the event of a head-on collision, the end-treated anti-collision device must not puncture, arch or roll the vehicle. This is to ensure that the vehicle remains stable during a crash and to reduce the occurrence of dangerous situations such as rollovers.
Secondly, the acceleration generated by the vehicle during the collision cannot exceed the required limit to protect the life safety of passengers. In addition, when a runaway vehicle collides between the end and the standard section, the end structure should have the same performance of changing the direction of the vehicle as the guardrail of the standard section of the central divider. This is to ensure that the vehicle can be smoothly guided back to the normal direction of travel, avoiding successive collisions and a wider range of traffic accidents.
Third, the form and consideration of end treatment
The form of processing at the end can be divided into two types: separate type and combined type. The end of the divided corrugated beam guardrail should be consistent with the linear shape of the central separator to ensure the overall appearance and driving safety.
Within a certain length range (e.g., 16m), the corrugated beam guardrail gradually narrows from two parallel lines to the separating zone in a certain proportion, generally in a parabolic shape. The spacing between the columns is 2m, and the radius of the round end should be consistent with the line shape at the opening of the dividing zone, which is generally 25cm. This design can effectively reduce the collision force between the vehicle and the guardrail and improve road safety.
However, Continental has done little research on end processing technology, and currently mainly uses the method of connecting the corrugated beams on both sides, rather than advanced technologies such as dismantling energy dissipation columns or sliding bases.
Although this structure is easy to manufacture and install, and the cost is low, the energy absorption effect is not ideal. Therefore, it is necessary to strengthen the research and development and application of end treatment technology to improve the level of road safety.
In summary, the end treatment of high-speed anti-collision corrugated guardrail is of great significance for improving road safety and reducing traffic accidents. In practical applications, certain design requirements and considerations should be followed to select the appropriate end treatment form.
At the same time, the research and development and application of end treatment technology should be strengthened, and advanced energy absorption, displacement and other designs should be promoted to improve the energy absorption effect of the end.