Application of collar to control scouring around rectangular bridge piers
Various methods have been attempted to control scouring around bridge piers, such as using riprap, slots through the pier, a group of small piles in front of the pier, and collars. Following successful application of collars on circular piers for reduction of scouring, in this work the effectiveness...
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| Veröffentlicht in: | Journal of hydraulic research 2004-01, Vol.42 (1), p.97-103 |
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| container_title | Journal of hydraulic research |
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| creator | Zarrati, Amir R. Gholami, H. Mashahir, M.B. |
| description | Various methods have been attempted to control scouring around bridge piers, such as using riprap, slots through the pier, a group of small piles in front of the pier, and collars. Following successful application of collars on circular piers for reduction of scouring, in this work the effectiveness of collars on rectangular piers was tested. Experiments were carried out in the threshold of sediment motion with piers aligned and skewed at 5° and 10° to the flow, and with collars of different widths and at various elevations. It was found that wider collars at lower levels are more effective and that effectiveness of collars reduces by increasing the skewness of the pier. Maximum reduction of scouring was 74, 56 and 35% for a collar with a width equal to the pier width at streambed elevation when pier was aligned, skewed at 5° and skewed at 10° to the flow respectively. |
| doi_str_mv | 10.1080/00221686.2004.9641188 |
| format | Article |
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Following successful application of collars on circular piers for reduction of scouring, in this work the effectiveness of collars on rectangular piers was tested. Experiments were carried out in the threshold of sediment motion with piers aligned and skewed at 5° and 10° to the flow, and with collars of different widths and at various elevations. It was found that wider collars at lower levels are more effective and that effectiveness of collars reduces by increasing the skewness of the pier. Maximum reduction of scouring was 74, 56 and 35% for a collar with a width equal to the pier width at streambed elevation when pier was aligned, skewed at 5° and skewed at 10° to the flow respectively.</description><identifier>ISSN: 0022-1686</identifier><identifier>EISSN: 1814-2079</identifier><identifier>DOI: 10.1080/00221686.2004.9641188</identifier><identifier>CODEN: JHYRAF</identifier><language>eng</language><publisher>Delft: Taylor & Francis Group</publisher><subject>bridge pier ; collar ; Earth sciences ; Earth, ocean, space ; Engineering and environment geology. Geothermics ; Engineering geology ; Exact sciences and technology ; Hydrology ; Hydrology. 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Following successful application of collars on circular piers for reduction of scouring, in this work the effectiveness of collars on rectangular piers was tested. Experiments were carried out in the threshold of sediment motion with piers aligned and skewed at 5° and 10° to the flow, and with collars of different widths and at various elevations. It was found that wider collars at lower levels are more effective and that effectiveness of collars reduces by increasing the skewness of the pier. Maximum reduction of scouring was 74, 56 and 35% for a collar with a width equal to the pier width at streambed elevation when pier was aligned, skewed at 5° and skewed at 10° to the flow respectively.</description><subject>bridge pier</subject><subject>collar</subject><subject>Earth sciences</subject><subject>Earth, ocean, space</subject><subject>Engineering and environment geology. Geothermics</subject><subject>Engineering geology</subject><subject>Exact sciences and technology</subject><subject>Hydrology</subject><subject>Hydrology. Hydrogeology</subject><subject>mechanism of scouring</subject><subject>rectangular pier</subject><subject>scour reduction</subject><subject>Scouring</subject><subject>skewed pier</subject><issn>0022-1686</issn><issn>1814-2079</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2004</creationdate><recordtype>article</recordtype><recordid>eNqFkMtqwzAQRUVpoWnaTyh40-6cSpatx64h9BEIdJO9GMtSUFEsV7Ip-fvaJKG7llnMDJw7d7gI3RO8IFjgJ4yLgjDBFgXG5UKykhAhLtCMCFLmBebyEs0mJp-ga3ST0ue4MibZDK2XXeedht6FNgs208F7iFkfxqntY_BZ0mGIrt1lEMPQNlk0uod2N0xYHV2zM1nnTEy36MqCT-bu1Odo-_qyXb3nm4-39Wq5yTWlRZ9r0ACi5iWtgDNMsGRgS8JKwyUTvDINASyLktZY0pqbsXCDrZCW15aUdI4ej2e7GL4Gk3q1d0mb8evWhCGpQtCCcMn_BYmsJGF0AqsjqGNIKRqruuj2EA-KYDUFrM4BqylgdQp41D2cDCBp8DZCq136FVfjcSzlyD0fOdfaEPfwHaJvVA8HH-JZRP-2-gHSyo7W</recordid><startdate>20040101</startdate><enddate>20040101</enddate><creator>Zarrati, Amir R.</creator><creator>Gholami, H.</creator><creator>Mashahir, M.B.</creator><general>Taylor & Francis Group</general><general>International Association for Hydraulic Research</general><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7UA</scope><scope>C1K</scope><scope>8FD</scope><scope>FR3</scope><scope>KR7</scope></search><sort><creationdate>20040101</creationdate><title>Application of collar to control scouring around rectangular bridge piers</title><author>Zarrati, Amir R. ; Gholami, H. ; Mashahir, M.B.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c332t-cacaa8b7435a7601096af4164e796875ed1a09243b093b7e7e70d0f89f7bf143</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2004</creationdate><topic>bridge pier</topic><topic>collar</topic><topic>Earth sciences</topic><topic>Earth, ocean, space</topic><topic>Engineering and environment geology. Geothermics</topic><topic>Engineering geology</topic><topic>Exact sciences and technology</topic><topic>Hydrology</topic><topic>Hydrology. Hydrogeology</topic><topic>mechanism of scouring</topic><topic>rectangular pier</topic><topic>scour reduction</topic><topic>Scouring</topic><topic>skewed pier</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Zarrati, Amir R.</creatorcontrib><creatorcontrib>Gholami, H.</creatorcontrib><creatorcontrib>Mashahir, M.B.</creatorcontrib><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Water Resources Abstracts</collection><collection>Environmental Sciences and Pollution Management</collection><collection>Technology Research Database</collection><collection>Engineering Research Database</collection><collection>Civil Engineering Abstracts</collection><jtitle>Journal of hydraulic research</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Zarrati, Amir R.</au><au>Gholami, H.</au><au>Mashahir, M.B.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Application of collar to control scouring around rectangular bridge piers</atitle><jtitle>Journal of hydraulic research</jtitle><date>2004-01-01</date><risdate>2004</risdate><volume>42</volume><issue>1</issue><spage>97</spage><epage>103</epage><pages>97-103</pages><issn>0022-1686</issn><eissn>1814-2079</eissn><coden>JHYRAF</coden><abstract>Various methods have been attempted to control scouring around bridge piers, such as using riprap, slots through the pier, a group of small piles in front of the pier, and collars. 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| ispartof | Journal of hydraulic research, 2004-01, Vol.42 (1), p.97-103 |
| issn | 0022-1686 1814-2079 |
| language | eng |
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| source | Taylor & Francis Journals Complete |
| subjects | bridge pier collar Earth sciences Earth, ocean, space Engineering and environment geology. Geothermics Engineering geology Exact sciences and technology Hydrology Hydrology. Hydrogeology mechanism of scouring rectangular pier scour reduction Scouring skewed pier |
| title | Application of collar to control scouring around rectangular bridge piers |
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