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Modelling local scour around bridge piers using TELEMAC
Scour at bridge crossings is a major cause of bridge failure. There are several different types of scour such as general scour, constriction scour and local scour. One of the most serious types is local scour which occurs as a result of vortex formation around bridge piers and abutments (Hoffmans &...
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| Format: | Thesis |
| Language: | English |
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Department of Civil Engineering
2014
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| _version_ | 1867614453801943040 |
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| access_status_str | Open Access |
| author | Kabir, Alamgir |
| author2 | Armitage, Neil |
| author_browse | Armitage, Neil Kabir, Alamgir |
| author_facet | Armitage, Neil Kabir, Alamgir |
| author_sort | Kabir, Alamgir |
| collection | Thesis |
| description | Scour at bridge crossings is a major cause of bridge failure. There are several different types of scour such as general scour, constriction scour and local scour. One of the most serious types is local scour which occurs as a result of vortex formation around bridge piers and abutments (Hoffmans & Verheij, 1997; Raudkivi, 1998; Melville & Coleman, 2000; Richardson & Davis, 2001; Armitage & McGahey, 2003). Local scour is also one of the most difficult to predict accurately. If not adequately designed for, local scour of a riverbed at a bridge pier may become deep enough to undermine the pier foundation and eventually cause the bridge to collapse. Complete protection against scour is expensive and therefore not a favourable design option. It is generally cheaper to ensure that the foundation lies below the maximum expected scour depth. Traditionally, the maximum scour depth is predicted from empirical equations derived from simple laboratory tests without much regard for local conditions. Alternatively, smaIlscale hydraulic models, which are laborious and time intensive, are widely used. In view of the above, increasing attention is being paid to the use of Computational Fluid Dynamics (CFD) based modelling for the prediction of local scour and its opposite, local deposition. The ever-improving capabilities of computers and the increasing availability of powerful and flexible CFD codes have further assisted in this process. This study is a contribution in this direction. |
| format | Thesis |
| id | oai:open.uct.ac.za:11427/6683 |
| institution | University of Cape Town (South Africa) |
| language | eng |
| last_indexed | 2026-06-10T12:52:17.540Z |
| license_str | Not specified — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from UCTD — University of Cape Town Open Access Repository |
| publishDate | 2014 |
| publishDateRange | 2014 |
| publishDateSort | 2014 |
| publisher | Department of Civil Engineering |
| publisherStr | Department of Civil Engineering |
| record_format | dspace |
| source_str | UCTD — University of Cape Town Open Access Repository |
| spelling | oai:open.uct.ac.za:11427/6683 Modelling local scour around bridge piers using TELEMAC Kabir, Alamgir Armitage, Neil Civil Engineering Scour at bridge crossings is a major cause of bridge failure. There are several different types of scour such as general scour, constriction scour and local scour. One of the most serious types is local scour which occurs as a result of vortex formation around bridge piers and abutments (Hoffmans & Verheij, 1997; Raudkivi, 1998; Melville & Coleman, 2000; Richardson & Davis, 2001; Armitage & McGahey, 2003). Local scour is also one of the most difficult to predict accurately. If not adequately designed for, local scour of a riverbed at a bridge pier may become deep enough to undermine the pier foundation and eventually cause the bridge to collapse. Complete protection against scour is expensive and therefore not a favourable design option. It is generally cheaper to ensure that the foundation lies below the maximum expected scour depth. Traditionally, the maximum scour depth is predicted from empirical equations derived from simple laboratory tests without much regard for local conditions. Alternatively, smaIlscale hydraulic models, which are laborious and time intensive, are widely used. In view of the above, increasing attention is being paid to the use of Computational Fluid Dynamics (CFD) based modelling for the prediction of local scour and its opposite, local deposition. The ever-improving capabilities of computers and the increasing availability of powerful and flexible CFD codes have further assisted in this process. This study is a contribution in this direction. 2014-08-28T09:09:47Z 2014-08-28T09:09:47Z 2005 Thesis http://hdl.handle.net/11427/6683 eng application/pdf Department of Civil Engineering Faculty of Engineering and the Built Environment University of Cape Town |
| spellingShingle | Civil Engineering Kabir, Alamgir Modelling local scour around bridge piers using TELEMAC |
| title | Modelling local scour around bridge piers using TELEMAC |
| title_full | Modelling local scour around bridge piers using TELEMAC |
| title_fullStr | Modelling local scour around bridge piers using TELEMAC |
| title_full_unstemmed | Modelling local scour around bridge piers using TELEMAC |
| title_short | Modelling local scour around bridge piers using TELEMAC |
| title_sort | modelling local scour around bridge piers using telemac |
| topic | Civil Engineering |
| url | http://hdl.handle.net/11427/6683 |
| work_keys_str_mv | AT kabiralamgir modellinglocalscouraroundbridgepiersusingtelemac |