環境計画 (1)

[VII-29] Proposal of evaluation method of fallen tree risk

*Hitoshi Nagao¹, shogo hayashi¹, kazuaki hashimoto¹, satoru suzuki², toshihiro yamada³ (1. West Nippon Expressway Engineering Shikoku Company, 2. National Research and Development Agency Forestry and Forest Products Research Institute, 3. The University of Tokyo Graduate School of Agricultural and Life Sciences)

Keywords:Planting management, Fallen tree, load, Displacement, Young's modulus