| 摘要 |
PROBLEM TO BE SOLVED: To provide a reinforcing structure of an existing earth retaining wall, the structure that enables construction even if not disposing large-scale lifting equipment and is advantageous in construction period and cost, and prevents anchor steel materials from being cut even when a large earthquake force acts and facilitates restoration after the earthquake.SOLUTION: A reinforcing structure comprises ground anchors 5 and bearing pressure members 6 for inserting a surface member 2 and fixing it to a natural ground 1 with respect to an existing earth retaining wall 4 where cracks 3 occur on a surface member 2 having the back surface contacted with the natural ground 1. The reinforcing structure has longitudinal end sleepers 7 disposed to the surface member 2 at intervals, horizontal end sleepers 8 disposed perpendicularly to this and projecting heads of the ground anchors 5, washers 9 and nuts 10. The washers 9 each have a buckling transform strength by a load smaller than a tensile strength of an anchor steel material 5a, and protect an anchor body from being broken by permitting deformation such as the elongation or the bending of the steel material against destructive force mainly comprising an earthquake. |
