Abstract
The Japanese design specifications of guard fences were revised in 2004. Since this revision, it has been regulated to improve the choking rate from vehicles, and also to satisfy the requirements of the design specifications, a new bridge railing guard fences are designed. This study verified that the impact performance of the fence posts of new bridge railing guard fences satisfied the performance requirements of the design specifications. By comparing the new and existing types of fence posts, it was quantitatively verified that the fence posts of new types absorbed the impact energy by the lateral-torsional buckling behavior at the compression parts, and had better shock-absorbing properties than the fence post of existing types.
