Study on the effect of morphological changes of bridge piers on water movement properties

The different shapes of bridge piers across rivers have a great influence on the river water movement, and the study of the influence of pier morphology changes on the water movement characteristics is of great value for bridge design and river flooding. The hydrodynamic model can effectively simula...

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Autores principales:	Xianqi Zhang, Tao Wang, Bingsen Duan
Formato:	article
Lenguaje:	EN
Publicado:	IWA Publishing 2021
Materias:	bridge pier axial ratio flow regime mike21 flow model numerical simulation yellow river Environmental technology. Sanitary engineering TD1-1066
Acceso en línea:	https://doaj.org/article/d2fbea4953f24df69e7410d78f0ddf1c
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id	oai:doaj.org-article:d2fbea4953f24df69e7410d78f0ddf1c
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spelling	oai:doaj.org-article:d2fbea4953f24df69e7410d78f0ddf1c2021-11-05T21:17:24ZStudy on the effect of morphological changes of bridge piers on water movement properties1751-231X10.2166/wpt.2021.080https://doaj.org/article/d2fbea4953f24df69e7410d78f0ddf1c2021-10-01T00:00:00Zhttp://wpt.iwaponline.com/content/16/4/1421https://doaj.org/toc/1751-231XThe different shapes of bridge piers across rivers have a great influence on the river water movement, and the study of the influence of pier morphology changes on the water movement characteristics is of great value for bridge design and river flooding. The hydrodynamic model can effectively simulate and predict the changes of river flow patterns, which can provide scientific data support for river management. This paper constructs a hydrodynamic model based on MIKE21 and applies it to the numerical simulation of river hydrodynamics in the lower reaches of the Yellow River, taking elliptical piers as an example, and simulates the effect of the change of pier morphology on the flow velocity, water level and flow field of the river. The results show that the effect of elliptical pier morphology on the flow characteristics of the river channel is significant; under the same flow rate, the congestion value of the pier at the maximum axis ratio is 1.65 times the minimum axis ratio, and the larger the axis ratio, the more serious the congestion; the difference in flow velocity at the maximum axis ratio can reach 2.33 times the minimum axis ratio. HIGHLIGHTS This paper uses MIKE21 numerical simulation to analyze and study the changes in river congestion and flow patterns caused by bridge construction, and to provide more practical simulation data for the construction of cross-river bridges.; The Nash efficiency coefficient of 0.94 is highly accurate in the model validation and evaluation.;Xianqi ZhangTao WangBingsen DuanIWA Publishingarticlebridge pier axial ratioflow regimemike21 flow modelnumerical simulationyellow riverEnvironmental technology. Sanitary engineeringTD1-1066ENWater Practice and Technology, Vol 16, Iss 4, Pp 1421-1433 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	bridge pier axial ratio flow regime mike21 flow model numerical simulation yellow river Environmental technology. Sanitary engineering TD1-1066
spellingShingle	bridge pier axial ratio flow regime mike21 flow model numerical simulation yellow river Environmental technology. Sanitary engineering TD1-1066 Xianqi Zhang Tao Wang Bingsen Duan Study on the effect of morphological changes of bridge piers on water movement properties
description	The different shapes of bridge piers across rivers have a great influence on the river water movement, and the study of the influence of pier morphology changes on the water movement characteristics is of great value for bridge design and river flooding. The hydrodynamic model can effectively simulate and predict the changes of river flow patterns, which can provide scientific data support for river management. This paper constructs a hydrodynamic model based on MIKE21 and applies it to the numerical simulation of river hydrodynamics in the lower reaches of the Yellow River, taking elliptical piers as an example, and simulates the effect of the change of pier morphology on the flow velocity, water level and flow field of the river. The results show that the effect of elliptical pier morphology on the flow characteristics of the river channel is significant; under the same flow rate, the congestion value of the pier at the maximum axis ratio is 1.65 times the minimum axis ratio, and the larger the axis ratio, the more serious the congestion; the difference in flow velocity at the maximum axis ratio can reach 2.33 times the minimum axis ratio. HIGHLIGHTS This paper uses MIKE21 numerical simulation to analyze and study the changes in river congestion and flow patterns caused by bridge construction, and to provide more practical simulation data for the construction of cross-river bridges.; The Nash efficiency coefficient of 0.94 is highly accurate in the model validation and evaluation.;
format	article
author	Xianqi Zhang Tao Wang Bingsen Duan
author_facet	Xianqi Zhang Tao Wang Bingsen Duan
author_sort	Xianqi Zhang
title	Study on the effect of morphological changes of bridge piers on water movement properties
title_short	Study on the effect of morphological changes of bridge piers on water movement properties
title_full	Study on the effect of morphological changes of bridge piers on water movement properties
title_fullStr	Study on the effect of morphological changes of bridge piers on water movement properties
title_full_unstemmed	Study on the effect of morphological changes of bridge piers on water movement properties
title_sort	study on the effect of morphological changes of bridge piers on water movement properties
publisher	IWA Publishing
publishDate	2021
url	https://doaj.org/article/d2fbea4953f24df69e7410d78f0ddf1c
work_keys_str_mv	AT xianqizhang studyontheeffectofmorphologicalchangesofbridgepiersonwatermovementproperties AT taowang studyontheeffectofmorphologicalchangesofbridgepiersonwatermovementproperties AT bingsenduan studyontheeffectofmorphologicalchangesofbridgepiersonwatermovementproperties
_version_	1718444010736975872

Study on the effect of morphological changes of bridge piers on water movement properties

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