| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a guard fence capable of reducing the damage to a column as much as possible by suppressing transmission of shock to the column even when a large shock is applied to a horizontal rail. <P>SOLUTION: Because a column 1 is steel and a horizontal rail 2 is aluminum alloy, and the horizontal rail 2 of aluminum alloy has a lower strength compared with a steel horizontal rail with high strength, the horizontal rail 2 bends to absorb shock so that the transmission of shock to the column 1 can be suppressed. In addition, compared with a column of aluminum alloy, the steel column 1 can reduce the force which works in a direction of withdrawing an anchor bolt A when shock is received, so that a burden on a foundation part which is a concrete covered ground part R can be reduced. <P>COPYRIGHT: (C)2013,JPO&INPIT |
