A Basic Study on Protective Steel Structures against Woody Debris Hazards. Issue 2 (June 2015)

• Record Type: Journal Article
• Authors: Horiguchi, Toshiyuki; Shibuya, Hajime; Katsuki, Satoshi; Ishikawa, Nobutaka; Mizuyama, Takahisa
• Is Part Of: International journal of protective structures. Volume 6:Issue 2(2015)
• Page Start: 191
• Page End: 215
• Publication Date: 2015-06
• Subjects: slit dam -- woody debris -- trap efficiency -- 3D-DEM -- cylindrical stick element; Buildings -- Protection -- Periodicals; Buildings -- Blast effects -- Periodicals; Building, Bombproof -- Periodicals; Structural analysis (Engineering) -- Periodicals; Shock (Mechanics) -- Periodicals; 624.176
• DOI: 10.1260/2041-4196.6.2.191
• Languages: English
• ISSNs: 2041-4196

Abstract

This paper presents a basic study for protective structures (slit dams) against woody debris hazards. First, a model experiment was carried out to examine the trap efficiency of a slit dam against woody debris with or without roots. Herein, the effects of length of woody debris, flow discharge and opening width of a slit dam on the trap efficiency were investigated. Second, a new three dimensional distinct element method (3D-DEM) was developed to simulate the trap efficiency of woody debris with or without roots by introducing cylindrical elements. Finally, the new 3D-DEM was applied to simulate an actual woody debris disaster site in Hiroshima, Japan.