リニューアル(9)

[VI-477] Wind tunnel experiment of new drainage structure lid (screen) applied to highway slope

〇TSUYOSHI NAKADE¹, Takeharu Tajiri², Noriaki Wanibuchi¹, Hiroshi Ozawa¹, Masahiro Fijita¹, Yoshiaki Yamamoto³, Takeo Kanawa³ (1.Kumagai Gumi Co., Ltd., 2.Central-NEXCO Technical Marketing Company , 3.KCON CO.LTD.)

Keywords:Renewal project, Earth structure, Drainage structure, Wind tunnel experiment

To replace drainage ditches on the embankment slopes in large-scale repair work on expressways, a drainage ditch lid (screen) that is lightweight and has a water passage function when dead leaves are deposited was adopted with the aim of improving the efficiency of maintenance.The screen used had a vertical claw hook inside the drain and was easy to remove, but there were concerns about sliding and scattering under strong winds such as typhoons.In this paper, we report the results of a wind tunnel experiment conducted to verify the stability of a new drain ditch lid against wind loads.