Experimental and Numerical Investigation of the Cross-Sectional Mechanical Behavior of a Steel–Concrete Immersed Tube Tunnel
This paper presents a proposed static test and numerical study on the mechanical properties of steel-shell–concrete-structure-immersed tunnel nodes, which is used to investigate the seismic performance and damage mechanism of steel-shell–concrete-structure-immersed tunnel nodes. The test is based on...
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MDPI AG
2022-09-01
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| Series: | Buildings |
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| Online Access: | https://www.mdpi.com/2075-5309/12/10/1553 |
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| author | Yao-Yu Zhu Shen-You Song Wei Liu Ya-Wei Guo Li Zhu Jia-Xin Li |
| author_facet | Yao-Yu Zhu Shen-You Song Wei Liu Ya-Wei Guo Li Zhu Jia-Xin Li |
| author_sort | Yao-Yu Zhu |
| collection | DOAJ |
| description | This paper presents a proposed static test and numerical study on the mechanical properties of steel-shell–concrete-structure-immersed tunnel nodes, which is used to investigate the seismic performance and damage mechanism of steel-shell–concrete-structure-immersed tunnel nodes. The test is based on the immersed tube tunnel project in the deep China channel, and the nodes representing the outermost and innermost vertical walls of the immersed tube tunnel, i.e., L-shaped and T-shaped node specimens, were designed and fabricated at a scale of 1:5, and the specimens were mainly subjected to the combined effect of vertical axial compression and lateral displacement loads. The test results show that the L-shaped node will exhibit brittle damage characteristics with high lateral load carrying capacity and energy dissipation capacity during the ultimate load phase, while the T-shaped node exhibits bending damage with better ductility, so the outermost vertical wall should be locally reinforced to ensure the necessary ductility of the structure in the actual project. In addition, by comparing the numerical calculation and experimental results, it is found that there is good agreement in terms of load–displacement curves and crack distribution, which shows that the modeling method proposed in this paper can accurately simulate the mechanical properties of immersed tunnel nodes and can guide the section design of immersed tunnels with steel shell–concrete structures. |
| first_indexed | 2024-03-09T20:33:38Z |
| format | Article |
| id | doaj.art-038de807f3f345c19883eb9243c0669d |
| institution | Directory Open Access Journal |
| issn | 2075-5309 |
| language | English |
| last_indexed | 2024-03-09T20:33:38Z |
| publishDate | 2022-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Buildings |
| spelling | doaj.art-038de807f3f345c19883eb9243c0669d2023-11-23T23:16:10ZengMDPI AGBuildings2075-53092022-09-011210155310.3390/buildings12101553Experimental and Numerical Investigation of the Cross-Sectional Mechanical Behavior of a Steel–Concrete Immersed Tube TunnelYao-Yu Zhu0Shen-You Song1Wei Liu2Ya-Wei Guo3Li Zhu4Jia-Xin Li5CCCC Highway Bridges National Engineering Research Center Co., Ltd., Beijing 100120, ChinaShenzhen-Zhongshan Link Administration Center, Zhongshan 528449, ChinaSchool of Civil Engineering, Beijing Jiaotong University, Beijing 100044, ChinaCCCC Highway Bridges National Engineering Research Center Co., Ltd., Beijing 100120, ChinaSchool of Civil Engineering, Beijing Jiaotong University, Beijing 100044, ChinaSchool of Civil Engineering, Beijing Jiaotong University, Beijing 100044, ChinaThis paper presents a proposed static test and numerical study on the mechanical properties of steel-shell–concrete-structure-immersed tunnel nodes, which is used to investigate the seismic performance and damage mechanism of steel-shell–concrete-structure-immersed tunnel nodes. The test is based on the immersed tube tunnel project in the deep China channel, and the nodes representing the outermost and innermost vertical walls of the immersed tube tunnel, i.e., L-shaped and T-shaped node specimens, were designed and fabricated at a scale of 1:5, and the specimens were mainly subjected to the combined effect of vertical axial compression and lateral displacement loads. The test results show that the L-shaped node will exhibit brittle damage characteristics with high lateral load carrying capacity and energy dissipation capacity during the ultimate load phase, while the T-shaped node exhibits bending damage with better ductility, so the outermost vertical wall should be locally reinforced to ensure the necessary ductility of the structure in the actual project. In addition, by comparing the numerical calculation and experimental results, it is found that there is good agreement in terms of load–displacement curves and crack distribution, which shows that the modeling method proposed in this paper can accurately simulate the mechanical properties of immersed tunnel nodes and can guide the section design of immersed tunnels with steel shell–concrete structures.https://www.mdpi.com/2075-5309/12/10/1553immersed tube tunneldouble steel plate structureseismic performanceexperimental studynumerical simulation |
| spellingShingle | Yao-Yu Zhu Shen-You Song Wei Liu Ya-Wei Guo Li Zhu Jia-Xin Li Experimental and Numerical Investigation of the Cross-Sectional Mechanical Behavior of a Steel–Concrete Immersed Tube Tunnel Buildings immersed tube tunnel double steel plate structure seismic performance experimental study numerical simulation |
| title | Experimental and Numerical Investigation of the Cross-Sectional Mechanical Behavior of a Steel–Concrete Immersed Tube Tunnel |
| title_full | Experimental and Numerical Investigation of the Cross-Sectional Mechanical Behavior of a Steel–Concrete Immersed Tube Tunnel |
| title_fullStr | Experimental and Numerical Investigation of the Cross-Sectional Mechanical Behavior of a Steel–Concrete Immersed Tube Tunnel |
| title_full_unstemmed | Experimental and Numerical Investigation of the Cross-Sectional Mechanical Behavior of a Steel–Concrete Immersed Tube Tunnel |
| title_short | Experimental and Numerical Investigation of the Cross-Sectional Mechanical Behavior of a Steel–Concrete Immersed Tube Tunnel |
| title_sort | experimental and numerical investigation of the cross sectional mechanical behavior of a steel concrete immersed tube tunnel |
| topic | immersed tube tunnel double steel plate structure seismic performance experimental study numerical simulation |
| url | https://www.mdpi.com/2075-5309/12/10/1553 |
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