APPARATUS FOR FORTIFYING SUPPORTING FORCE, CUSHION DEVICE FOR GUARDRAIL AND METHOD FOR CONSTRUCTING FOR GUARDRAIL

The present invention relates to a guardrail and, more specifically, to reinforcing a bearing capacity of the guardrail installed on a slope with respect to ground. Particularly, the present invention relates to a guardrail and a bearing capacity reinforcement device which are easy to install and reinforce the bearing capacity of a pillar by enclosing the pillar and inserting the bearing capacity reinforcement device under the ground by striking while the guardrail pillar is not disassembled but installed under the ground. The present invention relates to a guardrail having a pillar fixed on the ground and a guardrail bar coupled with the pillar and comprises the bearing capacity reinforcement device which contains one side of the pillar therein and is inserted underground such that the bearing capacity of the guardrail with respect to the ground is reinforced. The bearing capacity reinforcement device comprises a striking inserting pile which is inserted under the ground, wherein one side of the pillar is positioned inside the striking inserting pile; and a ground insertion reinforcement device which is coupled with a sidewall of the striking inserting pile to be inserted under the ground with the striking inserting pile, and contains and encloses ground earth therein.