This technology is a shock-absorbing median barrier that features buffer plates installed at a distance from the barrier body, connected by cylindrical buffers inserted into the barrier's coupling grooves. This design absorbs impact forces from vehicle collisions by distributing them both vertically and horizontally.
Conventional concrete block or steel guardrail median barriers are highly rigid, causing colliding vehicles to bounce back and trigger secondary accidents, often resulting in severe vehicle damage and passenger injuries. Even improved barriers designed to disperse impact often produce concrete debris and require full replacement when damaged, making maintenance difficult.
This technology utilizes a first shock-absorption unit, featuring an elastic member on a central shaft within the buffer to handle vertical forces, and a second shock-absorption unit, consisting of a vacuum-sealed space between inner and outer cases, to handle horizontal impacts. The assembly is sealed at the top and bottom. Guide members on the case slide along the inner case's guide grooves, while first packing members in the coupling grooves and second packing members on the sloped buffer plates provide additional shock absorption. Suitable for highways, expressways, high-collision areas like curves and bridge approaches, and tunnel entrances, this system prevents vehicles from bouncing back, reducing secondary accidents. Furthermore, maintenance time is minimized as only the damaged buffers and plates need to be replaced.
This invention was developed with support from the Ministry of Land, Infrastructure and Transport's research on well-pad and facility structural stability evaluation technology.
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