About SATO MASASHI
About 北海道開発庁 北海道開発局 開発土木研
About NISHI HIROAKI
About 北海道開発庁 北海道開発局 開発土木研
About KISHI NORIMITSU
About SUGATA NORIYUKI
About 構造工学論文集 A
About prevention against falling stone
About Facilities attached to roads
About Concrete structures
About 敷砂
About 緩衝材
About 重錘
About 落下
About PC
About 主桁
About 弾性
About 衝撃挙動