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作者:

Geng, Yan (Geng, Yan.) | Li, Xiongyan (Li, Xiongyan.) (学者:李雄彦) | Xue, Suduo (Xue, Suduo.) (学者:薛素铎) | Li, Jinguang (Li, Jinguang.) | Song, Yanjie (Song, Yanjie.)

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EI Scopus SCIE

摘要:

Air pipe cooling is an emerging technique in dealing with the hydration heat and thermal induced cracking of massive concrete structures. In order to investigate the influence of air pipe cooling on temperature distribution in large-dimension concrete walls, in situ experiments of heat transfer coefficient for internal forced convection were conducted on one experimental wall of 3.6 m x 3.6 m x 0.8 m in dimension with properly embedded corrugated pipes. The relationship between average inlet air velocity and average heat transfer coefficient for internal forced convection was then obtained and fitted to a proposed formula. In addition, air cooling experiments were performed on another three experimental walls to monitor the temperature variations of internal concrete. Meanwhile, finite element (FE) thermal analysis with the proposed formula was carried out and compared with the results of air cooling experiments to verify the accuracy of the proposed FE method. As the comparison results show, the calculated temperature curves are in good agreement with the tested data, with an average deviation of 0.07 degrees C, 0.13 degrees C and 0.19 degrees C under average inlet velocity of 3.78 m/s, 8.12 m/s and 11.64 m/s, respectively. It indicates that the FE analysis with the proposed heat transfer coefficient formula for internal forced convection is effective in estimating concrete temperature variations, providing a reliable fundamental approach for further thermo-mechanical coupling analysis and ventilation design in practical engineering projects. (C) 2018 Elsevier Ltd. All rights reserved.

关键词:

Hydration heat Air pipe cooling Finite-element thermal analysis Large-dimension RC walls

作者机构:

  • [ 1 ] [Geng, Yan]Beijing Univ Technol, Coll Architecture & Civil Engn, 100 Pingleyuan, Beijing 100124, Peoples R China
  • [ 2 ] [Li, Xiongyan]Beijing Univ Technol, Coll Architecture & Civil Engn, 100 Pingleyuan, Beijing 100124, Peoples R China
  • [ 3 ] [Xue, Suduo]Beijing Univ Technol, Coll Architecture & Civil Engn, 100 Pingleyuan, Beijing 100124, Peoples R China
  • [ 4 ] [Li, Jinguang]China Huanqiu Contracting & Engn Co Ltd, Dept Civil Engn, 1 Chuangda 2nd Rd, Beijing 100012, Peoples R China
  • [ 5 ] [Song, Yanjie]China Huanqiu Contracting & Engn Co Ltd, Dept Civil Engn, 1 Chuangda 2nd Rd, Beijing 100012, Peoples R China

通讯作者信息:

  • 李雄彦

    [Li, Xiongyan]Beijing Univ Technol, Coll Architecture & Civil Engn, 100 Pingleyuan, Beijing 100124, Peoples R China

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来源 :

CONSTRUCTION AND BUILDING MATERIALS

ISSN: 0950-0618

年份: 2019

卷: 194

页码: 161-170

7 . 4 0 0

JCR@2022

ESI学科: MATERIALS SCIENCE;

ESI高被引阀值:211

JCR分区:1

被引次数:

WoS核心集被引频次: 6

SCOPUS被引频次: 6

ESI高被引论文在榜: 0 展开所有

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中文被引频次:

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