Temperature Control Technology for Construction of Jinsha River Bridge

The key problem of mass concrete temperature control is to effectively control the maximum temperature inside concrete, the temperature difference between inside and outside concrete, and the temperature difference between surface and environment. The size of the main tower cap of No. 3 Jinsha River...

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Autores principales:	Hui-Wu Jin, Guo-An Wang, Zhan-Ming Chen
Formato:	article
Lenguaje:	EN
Publicado:	Hindawi Limited 2021
Materias:	Engineering (General). Civil engineering (General) TA1-2040
Acceso en línea:	https://doaj.org/article/b88afdc689d44ea1b5de00de0cac2025
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id	oai:doaj.org-article:b88afdc689d44ea1b5de00de0cac2025
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spelling	oai:doaj.org-article:b88afdc689d44ea1b5de00de0cac20252021-11-15T01:19:15ZTemperature Control Technology for Construction of Jinsha River Bridge1687-809410.1155/2021/3452167https://doaj.org/article/b88afdc689d44ea1b5de00de0cac20252021-01-01T00:00:00Zhttp://dx.doi.org/10.1155/2021/3452167https://doaj.org/toc/1687-8094The key problem of mass concrete temperature control is to effectively control the maximum temperature inside concrete, the temperature difference between inside and outside concrete, and the temperature difference between surface and environment. The size of the main tower cap of No. 3 Jinsha River Bridge is 37 m × 23.5 m × 5.5 m, and the cubic volume of concrete reaches 4782.3 m3, which is poured in two times. In order to ensure construction quality of mass concrete structure, prevent the large mass concrete temperature stress, through the numerical simulation of the temperature control and optimization scheme, by optimizing the mixture ratio design, reducing the temperature of concrete pouring into the mold, cooling water cycling, insulation keeping in good health and a series of measures to effectively achieve the control goal, and eliminating the temperature cracks. The measured data show that the maximum temperature inside concrete, the temperature difference between inside and outside, and the temperature difference between surface and environment are qualified, but the temperature difference control of cooling water inlet and outlet has hysteresis effect, and the temperature difference between inlet and outlet will be greater than 10°C, which should be noticed.Hui-Wu JinGuo-An WangZhan-Ming ChenHindawi LimitedarticleEngineering (General). Civil engineering (General)TA1-2040ENAdvances in Civil Engineering, Vol 2021 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Engineering (General). Civil engineering (General) TA1-2040
spellingShingle	Engineering (General). Civil engineering (General) TA1-2040 Hui-Wu Jin Guo-An Wang Zhan-Ming Chen Temperature Control Technology for Construction of Jinsha River Bridge
description	The key problem of mass concrete temperature control is to effectively control the maximum temperature inside concrete, the temperature difference between inside and outside concrete, and the temperature difference between surface and environment. The size of the main tower cap of No. 3 Jinsha River Bridge is 37 m × 23.5 m × 5.5 m, and the cubic volume of concrete reaches 4782.3 m3, which is poured in two times. In order to ensure construction quality of mass concrete structure, prevent the large mass concrete temperature stress, through the numerical simulation of the temperature control and optimization scheme, by optimizing the mixture ratio design, reducing the temperature of concrete pouring into the mold, cooling water cycling, insulation keeping in good health and a series of measures to effectively achieve the control goal, and eliminating the temperature cracks. The measured data show that the maximum temperature inside concrete, the temperature difference between inside and outside, and the temperature difference between surface and environment are qualified, but the temperature difference control of cooling water inlet and outlet has hysteresis effect, and the temperature difference between inlet and outlet will be greater than 10°C, which should be noticed.
format	article
author	Hui-Wu Jin Guo-An Wang Zhan-Ming Chen
author_facet	Hui-Wu Jin Guo-An Wang Zhan-Ming Chen
author_sort	Hui-Wu Jin
title	Temperature Control Technology for Construction of Jinsha River Bridge
title_short	Temperature Control Technology for Construction of Jinsha River Bridge
title_full	Temperature Control Technology for Construction of Jinsha River Bridge
title_fullStr	Temperature Control Technology for Construction of Jinsha River Bridge
title_full_unstemmed	Temperature Control Technology for Construction of Jinsha River Bridge
title_sort	temperature control technology for construction of jinsha river bridge
publisher	Hindawi Limited
publishDate	2021
url	https://doaj.org/article/b88afdc689d44ea1b5de00de0cac2025
work_keys_str_mv	AT huiwujin temperaturecontroltechnologyforconstructionofjinshariverbridge AT guoanwang temperaturecontroltechnologyforconstructionofjinshariverbridge AT zhanmingchen temperaturecontroltechnologyforconstructionofjinshariverbridge
_version_	1718429006376730624

Temperature Control Technology for Construction of Jinsha River Bridge

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