Experimental Study of the Dynamic Performance of Steel Catenary Riser within the Touchdown Zone
This study proposed a novel experimental platform to conduct dynamic loading tests of a truncated model steel catenary riser (SCR) within the touchdown zone (TDZ). The facilities of the platform, including a soil tank, a loading system, and a soil stirring system, were introduced in detail. The para...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-01-01
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| Series: | Journal of Marine Science and Engineering |
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| Online Access: | https://www.mdpi.com/2077-1312/11/1/151 |
| _version_ | 1797440328521744384 |
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| author | Yang Yu Shengbo Xu Jianxing Yu Lixin Xu Xin Liu Pengfei Liu |
| author_facet | Yang Yu Shengbo Xu Jianxing Yu Lixin Xu Xin Liu Pengfei Liu |
| author_sort | Yang Yu |
| collection | DOAJ |
| description | This study proposed a novel experimental platform to conduct dynamic loading tests of a truncated model steel catenary riser (SCR) within the touchdown zone (TDZ). The facilities of the platform, including a soil tank, a loading system, and a soil stirring system, were introduced in detail. The parameters of the test were determined through the simulation of an in situ riser. A steel pipe was adopted as the model riser, with its outer diameter equaling that of the prototype SCR. Before executing the dynamic loadings, the model riser developed its static configuration under the submerged weight and applied bending moment. Subsequently, cyclic vertical and lateral displacement loads were applied to the truncated point. The test results showed that when the vertical loading amplitude increased from 200 mm to 300 mm, the stress ranges at the front of the model riser increased by more than 100%, whereas the stress range only differed by less than 5% under different loading periods. Numerical models of the SCR were built based on the vector form intrinsic finite element (VFIFE) method. High similarities between the test and simulation results proved the reliability of the nonlinear soil model and the numerical model. During the test, a seabed trench was developed with a depth of 0.71 D and a width of 0.48 D, and its shape was similar to the in situ trench. |
| first_indexed | 2024-03-09T12:05:34Z |
| format | Article |
| id | doaj.art-50f0533fd03745f38628d39e48fdc377 |
| institution | Directory Open Access Journal |
| issn | 2077-1312 |
| language | English |
| last_indexed | 2024-03-09T12:05:34Z |
| publishDate | 2023-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Journal of Marine Science and Engineering |
| spelling | doaj.art-50f0533fd03745f38628d39e48fdc3772023-11-30T22:57:53ZengMDPI AGJournal of Marine Science and Engineering2077-13122023-01-0111115110.3390/jmse11010151Experimental Study of the Dynamic Performance of Steel Catenary Riser within the Touchdown ZoneYang Yu0Shengbo Xu1Jianxing Yu2Lixin Xu3Xin Liu4Pengfei Liu5State Key Laboratory of Hydraulic Engineering Simulation and Safety, Tianjin University, Tianjin 300072, ChinaState Key Laboratory of Hydraulic Engineering Simulation and Safety, Tianjin University, Tianjin 300072, ChinaState Key Laboratory of Hydraulic Engineering Simulation and Safety, Tianjin University, Tianjin 300072, ChinaState Key Laboratory of Hydraulic Engineering Simulation and Safety, Tianjin University, Tianjin 300072, ChinaState Key Laboratory of Hydraulic Engineering Simulation and Safety, Tianjin University, Tianjin 300072, ChinaState Key Laboratory of Hydraulic Engineering Simulation and Safety, Tianjin University, Tianjin 300072, ChinaThis study proposed a novel experimental platform to conduct dynamic loading tests of a truncated model steel catenary riser (SCR) within the touchdown zone (TDZ). The facilities of the platform, including a soil tank, a loading system, and a soil stirring system, were introduced in detail. The parameters of the test were determined through the simulation of an in situ riser. A steel pipe was adopted as the model riser, with its outer diameter equaling that of the prototype SCR. Before executing the dynamic loadings, the model riser developed its static configuration under the submerged weight and applied bending moment. Subsequently, cyclic vertical and lateral displacement loads were applied to the truncated point. The test results showed that when the vertical loading amplitude increased from 200 mm to 300 mm, the stress ranges at the front of the model riser increased by more than 100%, whereas the stress range only differed by less than 5% under different loading periods. Numerical models of the SCR were built based on the vector form intrinsic finite element (VFIFE) method. High similarities between the test and simulation results proved the reliability of the nonlinear soil model and the numerical model. During the test, a seabed trench was developed with a depth of 0.71 D and a width of 0.48 D, and its shape was similar to the in situ trench.https://www.mdpi.com/2077-1312/11/1/151steel catenary riserstouchdown zonedynamic loading testsvector form intrinsic finite element methodriser–seabed interaction |
| spellingShingle | Yang Yu Shengbo Xu Jianxing Yu Lixin Xu Xin Liu Pengfei Liu Experimental Study of the Dynamic Performance of Steel Catenary Riser within the Touchdown Zone Journal of Marine Science and Engineering steel catenary risers touchdown zone dynamic loading tests vector form intrinsic finite element method riser–seabed interaction |
| title | Experimental Study of the Dynamic Performance of Steel Catenary Riser within the Touchdown Zone |
| title_full | Experimental Study of the Dynamic Performance of Steel Catenary Riser within the Touchdown Zone |
| title_fullStr | Experimental Study of the Dynamic Performance of Steel Catenary Riser within the Touchdown Zone |
| title_full_unstemmed | Experimental Study of the Dynamic Performance of Steel Catenary Riser within the Touchdown Zone |
| title_short | Experimental Study of the Dynamic Performance of Steel Catenary Riser within the Touchdown Zone |
| title_sort | experimental study of the dynamic performance of steel catenary riser within the touchdown zone |
| topic | steel catenary risers touchdown zone dynamic loading tests vector form intrinsic finite element method riser–seabed interaction |
| url | https://www.mdpi.com/2077-1312/11/1/151 |
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