Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Debris Problems in the River Environment
Debris causes hydraulic problems at highway bridges nationwide. The problems are the greatest in the Pacific Northwest and the upper and lower Mississippi River Valley. Debris hazards are local and infrequent phenomena often associated with large floods. Most bridge destruction is due to accumulation against bridge components. Debris may partially or totally block waterways and create adverse hydraulic conditions that erode pier foundations and bridge abutments and do other structural damage. Countermeasures presently used by highway agencies include: (1) sufficient freeboard, (2) proper pier spacing, (3) solid piers, (4) debris deflectors, (5) special superstructure designs, (6) flood relief structures, and (7) regular and emergency removal of debris at bridge crossings.
Debris Problems in the River Environment
Debris causes hydraulic problems at highway bridges nationwide. The problems are the greatest in the Pacific Northwest and the upper and lower Mississippi River Valley. Debris hazards are local and infrequent phenomena often associated with large floods. Most bridge destruction is due to accumulation against bridge components. Debris may partially or totally block waterways and create adverse hydraulic conditions that erode pier foundations and bridge abutments and do other structural damage. Countermeasures presently used by highway agencies include: (1) sufficient freeboard, (2) proper pier spacing, (3) solid piers, (4) debris deflectors, (5) special superstructure designs, (6) flood relief structures, and (7) regular and emergency removal of debris at bridge crossings.
Debris Problems in the River Environment
F. F. M. Chang (Autor:in) / H. W. Shen (Autor:in)
1979
78 pages
Report
Keine Angabe
Englisch
Highway Engineering , Wooden logs , Damage , Highway bridges , Accumulation , Lumbering , Vegetation , Residues , Open channel flow , Stream erosion , Bridge piers , Deflectors , Design , Removal , Channels , Statistical analysis , Hazards , Culverts , Debris
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