Numerical Simulation Analysis of the Full-Section Immersed Tube with the Post-Pouring Belt under Hydration Reaction
To study the force and deformation characteristics of a full-section immersed tube with post-pouring belt under the action of hydration reaction, the numerical model of full-section immersed tube with post-pouring belt was established by using MIDAS FEA (V2013) finite element analysis software, and...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-09-01
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| Series: | Buildings |
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| Online Access: | https://www.mdpi.com/2075-5309/13/9/2377 |
| _version_ | 1797580950694002688 |
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| author | Ping-Jie Li Ming-Jie Chen Wen-Huo Sun |
| author_facet | Ping-Jie Li Ming-Jie Chen Wen-Huo Sun |
| author_sort | Ping-Jie Li |
| collection | DOAJ |
| description | To study the force and deformation characteristics of a full-section immersed tube with post-pouring belt under the action of hydration reaction, the numerical model of full-section immersed tube with post-pouring belt was established by using MIDAS FEA (V2013) finite element analysis software, and the stress, cracking and deformation of the segment of the post-pouring belt were analyzed. The results show that under the action of hydration reaction, the concrete reaches the highest temperature at about 36 h, which appears at the roof of the tube gallery in the immersed tube, and the bottom steel plate expands rapidly initially, and subsequently shrinks gradually. The outer surface of the post-pouring segment concrete is stretched, and the internal region is under pressure, and as the internal temperature of the concrete cools down, the bottom plate starts to contract. The steel bar connection between the post-pouring belt and the surrounding immersed tube segment will increase the risk of cracking in the bottom plate of the full-section immersed tube. When only the steel bars in the bottom plate are connected, the maximum tensile stress of the immersed tube bottom plate will increase by 16.0% compared to the no connection case. If the steel bars of the immersed tube’s web and roof are also connected, the maximum tensile stress will increase by over 20%. By connecting the steel bars, the peripheral tube section plays a certain role in limiting the transverse deformation of the post-pouring belt and constraining the reinforcement of the bottom plate and web (and roof) can reduce the transverse deformation of the immersed tube to a great extent, reducing the proportion by over 10%. |
| first_indexed | 2024-03-10T22:57:23Z |
| format | Article |
| id | doaj.art-832105dcd4394b8aa672b62b135c5695 |
| institution | Directory Open Access Journal |
| issn | 2075-5309 |
| language | English |
| last_indexed | 2024-03-10T22:57:23Z |
| publishDate | 2023-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Buildings |
| spelling | doaj.art-832105dcd4394b8aa672b62b135c56952023-11-19T09:53:13ZengMDPI AGBuildings2075-53092023-09-01139237710.3390/buildings13092377Numerical Simulation Analysis of the Full-Section Immersed Tube with the Post-Pouring Belt under Hydration ReactionPing-Jie Li0Ming-Jie Chen1Wen-Huo Sun2CCCC Fourth Harbor Engineering Institute Co., Ltd., Guangzhou 510230, ChinaCCCC Fourth Harbor Engineering Institute Co., Ltd., Guangzhou 510230, ChinaThe Second Engineering Company of CCCC Fourth Harbor Engineering Co., Ltd., Guangzhou 510220, ChinaTo study the force and deformation characteristics of a full-section immersed tube with post-pouring belt under the action of hydration reaction, the numerical model of full-section immersed tube with post-pouring belt was established by using MIDAS FEA (V2013) finite element analysis software, and the stress, cracking and deformation of the segment of the post-pouring belt were analyzed. The results show that under the action of hydration reaction, the concrete reaches the highest temperature at about 36 h, which appears at the roof of the tube gallery in the immersed tube, and the bottom steel plate expands rapidly initially, and subsequently shrinks gradually. The outer surface of the post-pouring segment concrete is stretched, and the internal region is under pressure, and as the internal temperature of the concrete cools down, the bottom plate starts to contract. The steel bar connection between the post-pouring belt and the surrounding immersed tube segment will increase the risk of cracking in the bottom plate of the full-section immersed tube. When only the steel bars in the bottom plate are connected, the maximum tensile stress of the immersed tube bottom plate will increase by 16.0% compared to the no connection case. If the steel bars of the immersed tube’s web and roof are also connected, the maximum tensile stress will increase by over 20%. By connecting the steel bars, the peripheral tube section plays a certain role in limiting the transverse deformation of the post-pouring belt and constraining the reinforcement of the bottom plate and web (and roof) can reduce the transverse deformation of the immersed tube to a great extent, reducing the proportion by over 10%.https://www.mdpi.com/2075-5309/13/9/2377full-section immersed tubepost-pouring beltconnection formhydration reactiontemperature stress |
| spellingShingle | Ping-Jie Li Ming-Jie Chen Wen-Huo Sun Numerical Simulation Analysis of the Full-Section Immersed Tube with the Post-Pouring Belt under Hydration Reaction Buildings full-section immersed tube post-pouring belt connection form hydration reaction temperature stress |
| title | Numerical Simulation Analysis of the Full-Section Immersed Tube with the Post-Pouring Belt under Hydration Reaction |
| title_full | Numerical Simulation Analysis of the Full-Section Immersed Tube with the Post-Pouring Belt under Hydration Reaction |
| title_fullStr | Numerical Simulation Analysis of the Full-Section Immersed Tube with the Post-Pouring Belt under Hydration Reaction |
| title_full_unstemmed | Numerical Simulation Analysis of the Full-Section Immersed Tube with the Post-Pouring Belt under Hydration Reaction |
| title_short | Numerical Simulation Analysis of the Full-Section Immersed Tube with the Post-Pouring Belt under Hydration Reaction |
| title_sort | numerical simulation analysis of the full section immersed tube with the post pouring belt under hydration reaction |
| topic | full-section immersed tube post-pouring belt connection form hydration reaction temperature stress |
| url | https://www.mdpi.com/2075-5309/13/9/2377 |
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