Show simple item record

dc.contributor.author
Schalko, Isabella
dc.date.accessioned
2020-07-08T09:50:14Z
dc.date.available
2020-04-20T14:27:06Z
dc.date.available
2020-04-29T10:42:30Z
dc.date.available
2020-07-08T09:50:14Z
dc.date.issued
2020-07
dc.identifier.issn
0197-9337
dc.identifier.issn
1096-9837
dc.identifier.other
10.1002/esp.4864
en_US
dc.identifier.uri
http://hdl.handle.net/20.500.11850/410808
dc.description.abstract
Large wood (LW) transport can increase greatly during floods, leading to accumulations at river infrastructures. To mitigate the potential flood hazard, racks are a common method to retain LW upstream of endangered settlements or infrastructures. The majority of LW retention racks consist of vertical bars and, therefore, disrupt bedload transport. It can be hypothesized that inclined racks reduce backwater rise and local scour, as wood will block the upper part of the rack, thereby increasing the open flow cross‐section below the accumulation. Flume experiments were conducted under clear water conditions to analyse backwater rise and local scour as a function of (1) rack inclination, (2) hydraulic inflow condition, (3) uniform bed material, and (4) LW volume. In addition, the first experiments were performed under live bed scour conditions to study the effect of bedload transport on local scour and backwater rise. Based on the experiments, backwater rise and local scour decrease with decreasing rack angle to the horizontal. LW predominantly accumulated at the upper part of the rack, leading to an open flow cross‐section below the accumulation. The effect of rack angle was included in existing design equations for backwater rise and local scour depth. In addition, the first experiments with bedload transport resulted in smaller backwater rise and local scour depth. This study contributes to an enhanced process understanding of wood retention and bedload transport at rack structures and an improved design of LW retention racks (© 2020 John Wiley & Sons, Ltd.).
en_US
dc.language.iso
en
en_US
dc.publisher
Wiley
en_US
dc.subject
backwater rise
en_US
dc.subject
flood protection
en_US
dc.subject
large wood (LW)
en_US
dc.subject
local scour
en_US
dc.subject
bedload transport
en_US
dc.title
Wood retention at inclined racks: Effects on flow and local bedload processes
en_US
dc.type
Journal Article
dc.date.published
2020-04-15
ethz.journal.title
Earth Surface Processes and Landforms
ethz.journal.volume
45
en_US
ethz.journal.issue
9
en_US
ethz.journal.abbreviated
Earth Surf Process Landforms
ethz.pages.start
2036
en_US
ethz.pages.end
2047
en_US
ethz.identifier.wos
ethz.identifier.scopus
ethz.publication.place
Chichester
en_US
ethz.publication.status
published
en_US
ethz.leitzahl
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02115 - Dep. Bau, Umwelt und Geomatik / Dep. of Civil, Env. and Geomatic Eng.::02611 - V. Wasserbau, Hydrologie u. Glaziologie / Lab. Hydraulics,Hydrology,Glaciology::03820 - Boes, Robert / Boes, Robert
en_US
ethz.leitzahl.certified
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02115 - Dep. Bau, Umwelt und Geomatik / Dep. of Civil, Env. and Geomatic Eng.::02611 - V. Wasserbau, Hydrologie u. Glaziologie / Lab. Hydraulics,Hydrology,Glaciology::03820 - Boes, Robert / Boes, Robert
en_US
ethz.date.deposited
2020-04-20T14:27:16Z
ethz.source
FORM
ethz.eth
yes
en_US
ethz.availability
Metadata only
en_US
ethz.rosetta.installDate
2020-07-08T09:50:24Z
ethz.rosetta.lastUpdated
2021-02-15T15:21:30Z
ethz.rosetta.exportRequired
true
ethz.rosetta.versionExported
true
ethz.COinS
ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.atitle=Wood%20retention%20at%20inclined%20racks:%20Effects%20on%20flow%20and%20local%20bedload%20processes&rft.jtitle=Earth%20Surface%20Processes%20and%20Landforms&rft.date=2020-07&rft.volume=45&rft.issue=9&rft.spage=2036&rft.epage=2047&rft.issn=0197-9337&1096-9837&rft.au=Schalko,%20Isabella&rft.genre=article&rft_id=info:doi/10.1002/esp.4864&
 Search print copy at ETH Library

Files in this item

FilesSizeFormatOpen in viewer

There are no files associated with this item.

Publication type

Show simple item record