| 摘要 |
According to the present invention, on a body of a post (11) for attaching a guard rail (14), a post protrusion portion (13) is integrally formed, and an additional support instrument (21) is prepared. On the support instrument, a support body (22) having a same cross section with the post protrusion portion (13) and a support wing (23) coming in contact with one side with the support body is formed. Moreover, support sides (25′, 25′′) are formed to connect the support wing (23) with the support body (22). The support wing (23) has a bent form in order to accept a strong impact when driven toward the ground and to strengthen the gripping force and impact resistance by expanding the contact surface are with the ground. The bottom of the support wing is narrow, while the top is wide, to become easily driven into the ground. |
