Hydraulic and Structural Analysis of Complex Cross-Section Reinforced Concrete Pipes to Improve Sewage Flow in a Combined Sewer System

A complex cross-section reinforced concrete pipe that combines a sub-pipe for the flow of sewage in dry weather and a main pipe for the flow of rainwater was developed to reduce sedimentation of the combined sewer system in dry weather. The sub-pipe was designed, considering the flow velocity, const...

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Autores principales:	Hyon Wook Ji, Jeong-Hee Kang, Dan Daehyun Koo, Sung Soo Yoo
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	combined sewer system complex cross-section sedimentation reinforced concrete pipe numerical modeling Hydraulic engineering TC1-978 Water supply for domestic and industrial purposes TD201-500
Acceso en línea:	https://doaj.org/article/be39015accfd42fab104a9da0d42aad2
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spelling	oai:doaj.org-article:be39015accfd42fab104a9da0d42aad22021-11-25T19:16:40ZHydraulic and Structural Analysis of Complex Cross-Section Reinforced Concrete Pipes to Improve Sewage Flow in a Combined Sewer System10.3390/w132233042073-4441https://doaj.org/article/be39015accfd42fab104a9da0d42aad22021-11-01T00:00:00Zhttps://www.mdpi.com/2073-4441/13/22/3304https://doaj.org/toc/2073-4441A complex cross-section reinforced concrete pipe that combines a sub-pipe for the flow of sewage in dry weather and a main pipe for the flow of rainwater was developed to reduce sedimentation of the combined sewer system in dry weather. The sub-pipe was designed, considering the flow velocity, constructability, and maintenance. By fitting the sewage data in the dry weather to the normal distribution, the ratio of the cross-sectional area of sewage flow to that of the pipe was determined to be approximately 0.418, which could cover 99.85% of the sewage volume of the target site. Based on this ratio, the diameter of the sub-pipe corresponding to the combined sewer system with a pipe diameter between 450 and 1300 mm was determined. The hydraulic performance analysis results showed that the flow velocity increased by 11 to 12% compared to the circular pipe based on the full sub-pipe and by more than 15% depending on the water level. The shear stress increased by more than 16.5%, and higher tractive force was observed. Structural safety was determined as the crack load and failure load far exceeded the minimum criteria, thereby verifying the feasibility and field applicability of the complex cross-section reinforced concrete pipe.Hyon Wook JiJeong-Hee KangDan Daehyun KooSung Soo YooMDPI AGarticlecombined sewer systemcomplex cross-sectionsedimentationreinforced concrete pipenumerical modelingHydraulic engineeringTC1-978Water supply for domestic and industrial purposesTD201-500ENWater, Vol 13, Iss 3304, p 3304 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	combined sewer system complex cross-section sedimentation reinforced concrete pipe numerical modeling Hydraulic engineering TC1-978 Water supply for domestic and industrial purposes TD201-500
spellingShingle	combined sewer system complex cross-section sedimentation reinforced concrete pipe numerical modeling Hydraulic engineering TC1-978 Water supply for domestic and industrial purposes TD201-500 Hyon Wook Ji Jeong-Hee Kang Dan Daehyun Koo Sung Soo Yoo Hydraulic and Structural Analysis of Complex Cross-Section Reinforced Concrete Pipes to Improve Sewage Flow in a Combined Sewer System
description	A complex cross-section reinforced concrete pipe that combines a sub-pipe for the flow of sewage in dry weather and a main pipe for the flow of rainwater was developed to reduce sedimentation of the combined sewer system in dry weather. The sub-pipe was designed, considering the flow velocity, constructability, and maintenance. By fitting the sewage data in the dry weather to the normal distribution, the ratio of the cross-sectional area of sewage flow to that of the pipe was determined to be approximately 0.418, which could cover 99.85% of the sewage volume of the target site. Based on this ratio, the diameter of the sub-pipe corresponding to the combined sewer system with a pipe diameter between 450 and 1300 mm was determined. The hydraulic performance analysis results showed that the flow velocity increased by 11 to 12% compared to the circular pipe based on the full sub-pipe and by more than 15% depending on the water level. The shear stress increased by more than 16.5%, and higher tractive force was observed. Structural safety was determined as the crack load and failure load far exceeded the minimum criteria, thereby verifying the feasibility and field applicability of the complex cross-section reinforced concrete pipe.
format	article
author	Hyon Wook Ji Jeong-Hee Kang Dan Daehyun Koo Sung Soo Yoo
author_facet	Hyon Wook Ji Jeong-Hee Kang Dan Daehyun Koo Sung Soo Yoo
author_sort	Hyon Wook Ji
title	Hydraulic and Structural Analysis of Complex Cross-Section Reinforced Concrete Pipes to Improve Sewage Flow in a Combined Sewer System
title_short	Hydraulic and Structural Analysis of Complex Cross-Section Reinforced Concrete Pipes to Improve Sewage Flow in a Combined Sewer System
title_full	Hydraulic and Structural Analysis of Complex Cross-Section Reinforced Concrete Pipes to Improve Sewage Flow in a Combined Sewer System
title_fullStr	Hydraulic and Structural Analysis of Complex Cross-Section Reinforced Concrete Pipes to Improve Sewage Flow in a Combined Sewer System
title_full_unstemmed	Hydraulic and Structural Analysis of Complex Cross-Section Reinforced Concrete Pipes to Improve Sewage Flow in a Combined Sewer System
title_sort	hydraulic and structural analysis of complex cross-section reinforced concrete pipes to improve sewage flow in a combined sewer system
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/be39015accfd42fab104a9da0d42aad2
work_keys_str_mv	AT hyonwookji hydraulicandstructuralanalysisofcomplexcrosssectionreinforcedconcretepipestoimprovesewageflowinacombinedsewersystem AT jeongheekang hydraulicandstructuralanalysisofcomplexcrosssectionreinforcedconcretepipestoimprovesewageflowinacombinedsewersystem AT dandaehyunkoo hydraulicandstructuralanalysisofcomplexcrosssectionreinforcedconcretepipestoimprovesewageflowinacombinedsewersystem AT sungsooyoo hydraulicandstructuralanalysisofcomplexcrosssectionreinforcedconcretepipestoimprovesewageflowinacombinedsewersystem
_version_	1718410120372682752

Hydraulic and Structural Analysis of Complex Cross-Section Reinforced Concrete Pipes to Improve Sewage Flow in a Combined Sewer System

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