CONSTRUCTION METHOD OF LEANING TYPE RETAINING WALL

摘要

PROBLEM TO BE SOLVED: To provide a construction method of a leaning type retaining wall in which earthquake resistance is improved.SOLUTION: A permeable mat 3 with a thickness of 10 mm or more and having buffer capacity, and having a permeability coefficient in the vertical direction of 1.0×10(cm/sec) or more to the surface, is nailed and covered with anchors 4 having a length of 10 cm or more on the entire of a slope surface S. Then, a retaining wall building frame A is constructed by piling up a remaining formwork 1 in multiple stages along the height direction of the slope surface S. Accordingly, the covering of the permeable mat 3 is prevented from being peeled off from the slope surface by nailing the anchors 4, and the surface soil of the slope surface S is inhibited from collapsing by the permeable mat 3 on the occurrence of earthquake. Also, an empty part is inhibited from being formed between the retaining wall building frame A and the slope surface S, and an earthquake load transmitted from the slope surface S to the back surface of the retaining wall building frame A is absorbed by the buffer of the permeable mat 3. Thus, the retaining wall building frame A suppresses the falling of the retaining wall building frame A itself as a structure of damping the amplitude swinging back and forth.