Experimental Study for Determination of Collar Dimensions Around Bridge Pier

The shape and size of a collar is important to maximize its effect as a scour countermeasure. Current research shows that the depth of the scour hole is decreased by using rectangular collars around circular piers. This study determined the approximate optimum dimensions for rectangular collars to m...
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Gespeichert in:

Autor*in:	Afshin Jahangirzadeh [verfasserIn] Shatirah Akib [verfasserIn]

Format:	E-Artikel
Sprache:	Englisch

Erschienen:	2015

Schlagwörter:	bridge pier model scour rectangular collar collar width downstream collar length upstream collar length

Übergeordnetes Werk:	In: The Baltic Journal of Road and Bridge Engineering - RTU Press, 2020, 10(2015), 1, Seite 89-96
Übergeordnetes Werk:	volume:10 ; year:2015 ; number:1 ; pages:89-96

Links:	Link aufrufen Link aufrufen Link aufrufen Journal toc Journal toc

DOI / URN:	10.3846/bjrbe.2015.11

Katalog-ID:	DOAJ033277427

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520			\|a The shape and size of a collar is important to maximize its effect as a scour countermeasure. Current research shows that the depth of the scour hole is decreased by using rectangular collars around circular piers. This study determined the approximate optimum dimensions for rectangular collars to minimize the temporal trend of scouring around a pier model. Effects of different sizes of rectangular collars on a model pier were investigated both at the upstream and downstream of the flume. It was observed that irrespective of the rectangular collar dimensions the upstream and the downstream were estimated to be 0.86 and 1.42, respectively. The optimum collar width was estimated to be 2.8 times the diameter of the pier. By using this optimized collar dimension, the non-dimensional depth of scour reached a min value of 0.034 at 72 h. The reduction percentage of the scour depth reached 98% at 72 h.
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allfields	10.3846/bjrbe.2015.11 doi (DE-627)DOAJ033277427 (DE-599)DOAJ9e3be2286c674259905639797aa53e1e DE-627 ger DE-627 rakwb eng TE1-450 TG1-470 Afshin Jahangirzadeh verfasserin aut Experimental Study for Determination of Collar Dimensions Around Bridge Pier 2015 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier The shape and size of a collar is important to maximize its effect as a scour countermeasure. Current research shows that the depth of the scour hole is decreased by using rectangular collars around circular piers. This study determined the approximate optimum dimensions for rectangular collars to minimize the temporal trend of scouring around a pier model. Effects of different sizes of rectangular collars on a model pier were investigated both at the upstream and downstream of the flume. It was observed that irrespective of the rectangular collar dimensions the upstream and the downstream were estimated to be 0.86 and 1.42, respectively. The optimum collar width was estimated to be 2.8 times the diameter of the pier. By using this optimized collar dimension, the non-dimensional depth of scour reached a min value of 0.034 at 72 h. The reduction percentage of the scour depth reached 98% at 72 h. bridge pier model scour rectangular collar collar width downstream collar length upstream collar length Highway engineering. Roads and pavements Bridge engineering Shatirah Akib verfasserin aut In The Baltic Journal of Road and Bridge Engineering RTU Press, 2020 10(2015), 1, Seite 89-96 (DE-627)1726723992 18224288 nnns volume:10 year:2015 number:1 pages:89-96 https://doi.org/10.3846/bjrbe.2015.11 kostenfrei https://doaj.org/article/9e3be2286c674259905639797aa53e1e kostenfrei https://bjrbe-journals.rtu.lv/article/view/3422 kostenfrei https://doaj.org/toc/1822-427X Journal toc kostenfrei https://doaj.org/toc/1822-4288 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_2014 GBV_ILN_2055 GBV_ILN_2108 GBV_ILN_2119 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4392 GBV_ILN_4700 AR 10 2015 1 89-96
spelling	10.3846/bjrbe.2015.11 doi (DE-627)DOAJ033277427 (DE-599)DOAJ9e3be2286c674259905639797aa53e1e DE-627 ger DE-627 rakwb eng TE1-450 TG1-470 Afshin Jahangirzadeh verfasserin aut Experimental Study for Determination of Collar Dimensions Around Bridge Pier 2015 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier The shape and size of a collar is important to maximize its effect as a scour countermeasure. Current research shows that the depth of the scour hole is decreased by using rectangular collars around circular piers. This study determined the approximate optimum dimensions for rectangular collars to minimize the temporal trend of scouring around a pier model. Effects of different sizes of rectangular collars on a model pier were investigated both at the upstream and downstream of the flume. It was observed that irrespective of the rectangular collar dimensions the upstream and the downstream were estimated to be 0.86 and 1.42, respectively. The optimum collar width was estimated to be 2.8 times the diameter of the pier. By using this optimized collar dimension, the non-dimensional depth of scour reached a min value of 0.034 at 72 h. The reduction percentage of the scour depth reached 98% at 72 h. bridge pier model scour rectangular collar collar width downstream collar length upstream collar length Highway engineering. Roads and pavements Bridge engineering Shatirah Akib verfasserin aut In The Baltic Journal of Road and Bridge Engineering RTU Press, 2020 10(2015), 1, Seite 89-96 (DE-627)1726723992 18224288 nnns volume:10 year:2015 number:1 pages:89-96 https://doi.org/10.3846/bjrbe.2015.11 kostenfrei https://doaj.org/article/9e3be2286c674259905639797aa53e1e kostenfrei https://bjrbe-journals.rtu.lv/article/view/3422 kostenfrei https://doaj.org/toc/1822-427X Journal toc kostenfrei https://doaj.org/toc/1822-4288 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_2014 GBV_ILN_2055 GBV_ILN_2108 GBV_ILN_2119 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4392 GBV_ILN_4700 AR 10 2015 1 89-96
allfields_unstemmed	10.3846/bjrbe.2015.11 doi (DE-627)DOAJ033277427 (DE-599)DOAJ9e3be2286c674259905639797aa53e1e DE-627 ger DE-627 rakwb eng TE1-450 TG1-470 Afshin Jahangirzadeh verfasserin aut Experimental Study for Determination of Collar Dimensions Around Bridge Pier 2015 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier The shape and size of a collar is important to maximize its effect as a scour countermeasure. Current research shows that the depth of the scour hole is decreased by using rectangular collars around circular piers. This study determined the approximate optimum dimensions for rectangular collars to minimize the temporal trend of scouring around a pier model. Effects of different sizes of rectangular collars on a model pier were investigated both at the upstream and downstream of the flume. It was observed that irrespective of the rectangular collar dimensions the upstream and the downstream were estimated to be 0.86 and 1.42, respectively. The optimum collar width was estimated to be 2.8 times the diameter of the pier. By using this optimized collar dimension, the non-dimensional depth of scour reached a min value of 0.034 at 72 h. The reduction percentage of the scour depth reached 98% at 72 h. bridge pier model scour rectangular collar collar width downstream collar length upstream collar length Highway engineering. Roads and pavements Bridge engineering Shatirah Akib verfasserin aut In The Baltic Journal of Road and Bridge Engineering RTU Press, 2020 10(2015), 1, Seite 89-96 (DE-627)1726723992 18224288 nnns volume:10 year:2015 number:1 pages:89-96 https://doi.org/10.3846/bjrbe.2015.11 kostenfrei https://doaj.org/article/9e3be2286c674259905639797aa53e1e kostenfrei https://bjrbe-journals.rtu.lv/article/view/3422 kostenfrei https://doaj.org/toc/1822-427X Journal toc kostenfrei https://doaj.org/toc/1822-4288 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_2014 GBV_ILN_2055 GBV_ILN_2108 GBV_ILN_2119 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4392 GBV_ILN_4700 AR 10 2015 1 89-96
allfieldsGer	10.3846/bjrbe.2015.11 doi (DE-627)DOAJ033277427 (DE-599)DOAJ9e3be2286c674259905639797aa53e1e DE-627 ger DE-627 rakwb eng TE1-450 TG1-470 Afshin Jahangirzadeh verfasserin aut Experimental Study for Determination of Collar Dimensions Around Bridge Pier 2015 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier The shape and size of a collar is important to maximize its effect as a scour countermeasure. Current research shows that the depth of the scour hole is decreased by using rectangular collars around circular piers. This study determined the approximate optimum dimensions for rectangular collars to minimize the temporal trend of scouring around a pier model. Effects of different sizes of rectangular collars on a model pier were investigated both at the upstream and downstream of the flume. It was observed that irrespective of the rectangular collar dimensions the upstream and the downstream were estimated to be 0.86 and 1.42, respectively. The optimum collar width was estimated to be 2.8 times the diameter of the pier. By using this optimized collar dimension, the non-dimensional depth of scour reached a min value of 0.034 at 72 h. The reduction percentage of the scour depth reached 98% at 72 h. bridge pier model scour rectangular collar collar width downstream collar length upstream collar length Highway engineering. Roads and pavements Bridge engineering Shatirah Akib verfasserin aut In The Baltic Journal of Road and Bridge Engineering RTU Press, 2020 10(2015), 1, Seite 89-96 (DE-627)1726723992 18224288 nnns volume:10 year:2015 number:1 pages:89-96 https://doi.org/10.3846/bjrbe.2015.11 kostenfrei https://doaj.org/article/9e3be2286c674259905639797aa53e1e kostenfrei https://bjrbe-journals.rtu.lv/article/view/3422 kostenfrei https://doaj.org/toc/1822-427X Journal toc kostenfrei https://doaj.org/toc/1822-4288 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_2014 GBV_ILN_2055 GBV_ILN_2108 GBV_ILN_2119 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4392 GBV_ILN_4700 AR 10 2015 1 89-96
allfieldsSound	10.3846/bjrbe.2015.11 doi (DE-627)DOAJ033277427 (DE-599)DOAJ9e3be2286c674259905639797aa53e1e DE-627 ger DE-627 rakwb eng TE1-450 TG1-470 Afshin Jahangirzadeh verfasserin aut Experimental Study for Determination of Collar Dimensions Around Bridge Pier 2015 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier The shape and size of a collar is important to maximize its effect as a scour countermeasure. Current research shows that the depth of the scour hole is decreased by using rectangular collars around circular piers. This study determined the approximate optimum dimensions for rectangular collars to minimize the temporal trend of scouring around a pier model. Effects of different sizes of rectangular collars on a model pier were investigated both at the upstream and downstream of the flume. It was observed that irrespective of the rectangular collar dimensions the upstream and the downstream were estimated to be 0.86 and 1.42, respectively. The optimum collar width was estimated to be 2.8 times the diameter of the pier. By using this optimized collar dimension, the non-dimensional depth of scour reached a min value of 0.034 at 72 h. The reduction percentage of the scour depth reached 98% at 72 h. bridge pier model scour rectangular collar collar width downstream collar length upstream collar length Highway engineering. Roads and pavements Bridge engineering Shatirah Akib verfasserin aut In The Baltic Journal of Road and Bridge Engineering RTU Press, 2020 10(2015), 1, Seite 89-96 (DE-627)1726723992 18224288 nnns volume:10 year:2015 number:1 pages:89-96 https://doi.org/10.3846/bjrbe.2015.11 kostenfrei https://doaj.org/article/9e3be2286c674259905639797aa53e1e kostenfrei https://bjrbe-journals.rtu.lv/article/view/3422 kostenfrei https://doaj.org/toc/1822-427X Journal toc kostenfrei https://doaj.org/toc/1822-4288 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_2014 GBV_ILN_2055 GBV_ILN_2108 GBV_ILN_2119 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4392 GBV_ILN_4700 AR 10 2015 1 89-96
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topic_facet	bridge pier model scour rectangular collar collar width downstream collar length upstream collar length Highway engineering. Roads and pavements Bridge engineering
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container_title	The Baltic Journal of Road and Bridge Engineering
authorswithroles_txt_mv	Afshin Jahangirzadeh @@aut@@ Shatirah Akib @@aut@@
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callnumber-first	T - Technology
author	Afshin Jahangirzadeh
spellingShingle	Afshin Jahangirzadeh misc TE1-450 misc TG1-470 misc bridge pier model misc scour misc rectangular collar misc collar width misc downstream collar length misc upstream collar length misc Highway engineering. Roads and pavements misc Bridge engineering Experimental Study for Determination of Collar Dimensions Around Bridge Pier
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topic_title	TE1-450 TG1-470 Experimental Study for Determination of Collar Dimensions Around Bridge Pier bridge pier model scour rectangular collar collar width downstream collar length upstream collar length
topic	misc TE1-450 misc TG1-470 misc bridge pier model misc scour misc rectangular collar misc collar width misc downstream collar length misc upstream collar length misc Highway engineering. Roads and pavements misc Bridge engineering
topic_unstemmed	misc TE1-450 misc TG1-470 misc bridge pier model misc scour misc rectangular collar misc collar width misc downstream collar length misc upstream collar length misc Highway engineering. Roads and pavements misc Bridge engineering
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title	Experimental Study for Determination of Collar Dimensions Around Bridge Pier
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title_full	Experimental Study for Determination of Collar Dimensions Around Bridge Pier
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title_sort	experimental study for determination of collar dimensions around bridge pier
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title_auth	Experimental Study for Determination of Collar Dimensions Around Bridge Pier
abstract	The shape and size of a collar is important to maximize its effect as a scour countermeasure. Current research shows that the depth of the scour hole is decreased by using rectangular collars around circular piers. This study determined the approximate optimum dimensions for rectangular collars to minimize the temporal trend of scouring around a pier model. Effects of different sizes of rectangular collars on a model pier were investigated both at the upstream and downstream of the flume. It was observed that irrespective of the rectangular collar dimensions the upstream and the downstream were estimated to be 0.86 and 1.42, respectively. The optimum collar width was estimated to be 2.8 times the diameter of the pier. By using this optimized collar dimension, the non-dimensional depth of scour reached a min value of 0.034 at 72 h. The reduction percentage of the scour depth reached 98% at 72 h.
abstractGer	The shape and size of a collar is important to maximize its effect as a scour countermeasure. Current research shows that the depth of the scour hole is decreased by using rectangular collars around circular piers. This study determined the approximate optimum dimensions for rectangular collars to minimize the temporal trend of scouring around a pier model. Effects of different sizes of rectangular collars on a model pier were investigated both at the upstream and downstream of the flume. It was observed that irrespective of the rectangular collar dimensions the upstream and the downstream were estimated to be 0.86 and 1.42, respectively. The optimum collar width was estimated to be 2.8 times the diameter of the pier. By using this optimized collar dimension, the non-dimensional depth of scour reached a min value of 0.034 at 72 h. The reduction percentage of the scour depth reached 98% at 72 h.
abstract_unstemmed	The shape and size of a collar is important to maximize its effect as a scour countermeasure. Current research shows that the depth of the scour hole is decreased by using rectangular collars around circular piers. This study determined the approximate optimum dimensions for rectangular collars to minimize the temporal trend of scouring around a pier model. Effects of different sizes of rectangular collars on a model pier were investigated both at the upstream and downstream of the flume. It was observed that irrespective of the rectangular collar dimensions the upstream and the downstream were estimated to be 0.86 and 1.42, respectively. The optimum collar width was estimated to be 2.8 times the diameter of the pier. By using this optimized collar dimension, the non-dimensional depth of scour reached a min value of 0.034 at 72 h. The reduction percentage of the scour depth reached 98% at 72 h.
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title_short	Experimental Study for Determination of Collar Dimensions Around Bridge Pier
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Experimental Study for Determination of Collar Dimensions Around Bridge Pier

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