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Engineering Advances

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ArticleOpen Access http://dx.doi.org/10.26855/ea.2023.06.011

Pipe Cooling Optimization of the Mass Marine Concrete Temperature Fields for the Main Tower Cap of the Zhoudai Sea-crossing Cable-stayed Bridge

 Kexin Chen1,*, Maolin He2, Lei Jin3, Tao Li1

1School of Municipal and ecological engineering, Shanghai Urban Construction Vocational College, Shanghai, China.

2School of Port and Transportation Engineering, Zhejiang Ocean University, Zhoushan, Zhejiang, China.

3Road and Bridge East China Engineering Co., Ltd., Shanghai, China.

*Corresponding author:  Kexin Chen

Published: July 26, 2023

Abstract

This study considered the complex offshore construction environment of the mass marine concrete pouring processes for the main tower cap of the sea-crossing cable-stayed bridge in the DSSJ03 bid section of the Ningbo Zhoushan Port. A MIDAS/Civil finite element software method was used to analyze the temperature field of the mass marine concrete of the No. ZT4 main tower cap, for the purpose of simulating and optimizing the flow velocity and inlet water temperatures of the cooling water pipes, as well as to optimize the original pipe cooling scheme. It was found that when compared with the actual monitoring temperature data of the hydration heat during the construction process, the cooling rate of the optimized pipe cooling scheme had been controlled within 2℃/d, with a high stress safety factor. This had effectively reduced the impacts of temperature stress of the marine concrete of the main tower cap. In addition, the generation of cracks in the mass marine concrete sections located in the harsh offshore environment was decreased, and the construction quality of the marine concrete poured into the complex offshore environment had been improved.

Keyword

Sea-crossing cable-stayed bridge, mass concrete temperature field, pipe cooling optimization

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Copyright

© 2023 by the author(s).
This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives (CC BY-NC-ND) license, which permits non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited and is not modified or adapted.
https://creativecommons.org/licenses/by-nc-nd/4.0/

How to cite this paper

Pipe Cooling Optimization of the Mass Marine Concrete Temperature Fields for the Main Tower Cap of the Zhoudai Sea-crossing Cable-stayed Bridge

How to cite this paper:  Kexin Chen, Maolin He, Lei Jin, Tao Li. (2023). Pipe Cooling Optimization of the Mass Marine Concrete Temperature Fields for the Main Tower Cap of the Zhoudai Sea-crossing Cable-stayed Bridge. Engineering Advances3(3), 210-215.

DOI: http://dx.doi.org/10.26855/ea.2023.06.011