Intermediate columns for rockfall prevention fences and rockfall prevention fences

摘要

PROBLEM TO BE SOLVED: To prevent a cable and a wire mesh from being caught in a confined portion of an intermediate support and hindering absorption of impact energy of falling rocks. SOLUTION: A closing portion 24 has a first axial movement limiting portion 35 having a first outer end surface 41 and a first facing surface 43, and a second axial direction having a second outer end surface 51 and a second facing surface 53. The first outer end surface 41 has a movement limiting portion 36, and the first outer end surface portion 41a has a first outer end surface curved surface portion 41a which is a convex surface that approaches the support column main body 22 toward both outer sides of the first axial movement limiting portion 35. The facing surface 43 has a first facing surface curved surface portion 43a, which is a convex surface that moves away from the second axial movement limiting portion 36 toward both outer sides of the first axial movement limiting portion 35, and the second outer end surface 51 is the second. It has a second outer end surface curved surface portion 51a which is a convex surface that approaches the support column main body 22 as it goes toward both outer sides of the axial movement limiting portion 36, and the second facing surface 53 goes toward both outer sides of the second axial movement limiting portion 36. It has a second facing surface curved surface portion 53a which is a convex surface that moves away from the first axial movement limiting portion 35. [Selection diagram] FIG. 5