Influence of bridge piers shapes on the flow of the lower Yellow River

The shape of bridge piers across rivers is one of the significant factors that affect the backwater in the river. The study on the influence of bridge pier shapes on the flow patterns of the river is valuable to the design of the bridge and river flooding. Based on the MIKE21 Flow Model hydrodynamic...

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Autores principales:	Xianqi Zhang, Tao Wang, Xiaobin Lu
Formato:	article
Lenguaje:	EN
Publicado:	IWA Publishing 2021
Materias:	bridge piers shape flow regime mike21 flow model numerical simulation yellow river Environmental technology. Sanitary engineering TD1-1066
Acceso en línea:	https://doaj.org/article/3be1ef84454f4fa78b548bac238a0833
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id	oai:doaj.org-article:3be1ef84454f4fa78b548bac238a0833
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spelling	oai:doaj.org-article:3be1ef84454f4fa78b548bac238a08332021-11-05T21:09:21ZInfluence of bridge piers shapes on the flow of the lower Yellow River1751-231X10.2166/wpt.2021.011https://doaj.org/article/3be1ef84454f4fa78b548bac238a08332021-04-01T00:00:00Zhttp://wpt.iwaponline.com/content/16/2/661https://doaj.org/toc/1751-231XThe shape of bridge piers across rivers is one of the significant factors that affect the backwater in the river. The study on the influence of bridge pier shapes on the flow patterns of the river is valuable to the design of the bridge and river flooding. Based on the MIKE21 Flow Model hydrodynamic model, dynamic numerical simulations were conducted to investigate the effect of different shapes of bridge piers on water flow. The result shows that rectangular, circular and elliptical piers have a water blocking effect on the river. The flow patterns changed in local areas near the piers. Under the same flow rate, the backwater of the rectangular pier was the largest, followed by the circular piers, and the elliptical pier was the smallest. The value of backwater volume caused by the rectangular pier was 1.95 times the elliptical pier. The elliptical bridge piers basically do not change the overall flow patterns of the river, and have little effect on the river regime. This work provides a reference for the layout of river bridge piers. Highlights The MIKE21 FM module is used to analyze the numerical simulation of different pier shapes under different working conditions, as well as the backwater conditions and speed changes.; The MIKE21 numerical model can simulate complex terrain well. The relative error of the model in the calibration process is less than 1%, and the Nash efficiency coefficient is 0.97.;Xianqi ZhangTao WangXiaobin LuIWA Publishingarticlebridge piers shapeflow regimemike21 flow modelnumerical simulationyellow riverEnvironmental technology. Sanitary engineeringTD1-1066ENWater Practice and Technology, Vol 16, Iss 2, Pp 661-680 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	bridge piers shape flow regime mike21 flow model numerical simulation yellow river Environmental technology. Sanitary engineering TD1-1066
spellingShingle	bridge piers shape flow regime mike21 flow model numerical simulation yellow river Environmental technology. Sanitary engineering TD1-1066 Xianqi Zhang Tao Wang Xiaobin Lu Influence of bridge piers shapes on the flow of the lower Yellow River
description	The shape of bridge piers across rivers is one of the significant factors that affect the backwater in the river. The study on the influence of bridge pier shapes on the flow patterns of the river is valuable to the design of the bridge and river flooding. Based on the MIKE21 Flow Model hydrodynamic model, dynamic numerical simulations were conducted to investigate the effect of different shapes of bridge piers on water flow. The result shows that rectangular, circular and elliptical piers have a water blocking effect on the river. The flow patterns changed in local areas near the piers. Under the same flow rate, the backwater of the rectangular pier was the largest, followed by the circular piers, and the elliptical pier was the smallest. The value of backwater volume caused by the rectangular pier was 1.95 times the elliptical pier. The elliptical bridge piers basically do not change the overall flow patterns of the river, and have little effect on the river regime. This work provides a reference for the layout of river bridge piers. Highlights The MIKE21 FM module is used to analyze the numerical simulation of different pier shapes under different working conditions, as well as the backwater conditions and speed changes.; The MIKE21 numerical model can simulate complex terrain well. The relative error of the model in the calibration process is less than 1%, and the Nash efficiency coefficient is 0.97.;
format	article
author	Xianqi Zhang Tao Wang Xiaobin Lu
author_facet	Xianqi Zhang Tao Wang Xiaobin Lu
author_sort	Xianqi Zhang
title	Influence of bridge piers shapes on the flow of the lower Yellow River
title_short	Influence of bridge piers shapes on the flow of the lower Yellow River
title_full	Influence of bridge piers shapes on the flow of the lower Yellow River
title_fullStr	Influence of bridge piers shapes on the flow of the lower Yellow River
title_full_unstemmed	Influence of bridge piers shapes on the flow of the lower Yellow River
title_sort	influence of bridge piers shapes on the flow of the lower yellow river
publisher	IWA Publishing
publishDate	2021
url	https://doaj.org/article/3be1ef84454f4fa78b548bac238a0833
work_keys_str_mv	AT xianqizhang influenceofbridgepiersshapesontheflowoftheloweryellowriver AT taowang influenceofbridgepiersshapesontheflowoftheloweryellowriver AT xiaobinlu influenceofbridgepiersshapesontheflowoftheloweryellowriver
_version_	1718444032356515840

Influence of bridge piers shapes on the flow of the lower Yellow River

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