| 摘要 |
<p>A roadside crash cushion (1), comprising: a guide rail (2) fixed to a road surface; a plurality of sliding supports (3), which slidably engage along the guide rail (2); a plurality of collapsible tubular elements (4) arranged horizontally one after another, which are supported by the plurality of sliding supports (3) and which each have a straight development axis and are fixed to the plurality of sliding supports (3). Each collapsible tubular element (4) of the plurality of collapsible tubular elements (4) exhibits a length and a transversal section that are in a reciprocal relation to one another such as to determine an irreversible deformation to compression of the collapsible tubular element (4) which determines the collapse thereof along the development axis thereof when the collapsible tubular element (4) is subjected to an axial force at least equal to a critical force.</p> |
