LANE REGULATION METHOD USING CONCRETE GUARD FENCE AND CONCRETE GUARD FENCE

摘要

PROBLEM TO BE SOLVED: To provide a concrete guard fence from which a block in the middle of a length direction can be singly and easily removed.SOLUTION: A concrete guard fence comprises: lower hang-out blocks 2 in which lower hang-out parts 5 are protrusively arranged at both-side lower parts in a length direction; upper hang-out blocks 3 in which upper hang-out parts 6 arranged on the lower hang-out parts 5 are protrusively arranged at both-side upper parts in the length direction; and a steel pipe 15 which connects the lower hang-out blocks 2 and the upper hang-out blocks 3 in a state that the upper hang-out parts 6 of the upper hang-out block 3 are arranged on the lower hang-out parts 5 of the lower hang-out block 2. By releasing the connection by the steel pipe 15, the upper hang-out block 3 in the middle can be lifted and removed. Furthermore, by removing the upper hang-out blocks 3, 3 at both sides, the lower hang-out block 2 in the middle can be lifted and removed.SELECTED DRAWING: Figure 4