Concentric Compressive Behavior and Design of Stainless Steel–Concrete Double-Skin Composite Tubes Influenced by Dual Hydraulic Pressures
The external hydraulic pressure and internal medium pressure acting on submarine pipelines can lead to the coupling effect of active and passive constraints on the mechanical performance of steel–concrete double-skin composite tubes, resulting in a significantly different bearing capacity mechanism...
Saved in:
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2024-11-01
|
| Series: | Journal of Marine Science and Engineering |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2077-1312/12/12/2140 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1846104185074876416 |
|---|---|
| author | Jian-Tao Wang Yang Yang Kai-Lin Yang Deng-Long Hu Long-Bo Xu Jun-Xin Li |
| author_facet | Jian-Tao Wang Yang Yang Kai-Lin Yang Deng-Long Hu Long-Bo Xu Jun-Xin Li |
| author_sort | Jian-Tao Wang |
| collection | DOAJ |
| description | The external hydraulic pressure and internal medium pressure acting on submarine pipelines can lead to the coupling effect of active and passive constraints on the mechanical performance of steel–concrete double-skin composite tubes, resulting in a significantly different bearing capacity mechanism compared to terrestrial engineering. In this paper, the full-range concentric compressive mechanism of new-type stainless steel–concrete double-skin (SSCDS) composite tubes subjected to dual hydraulic pressure was analyzed by the finite element method. The influence of geometric–physical parameters at various water depths was discussed. The key results reveal that imposing dual hydraulic pressures significantly improves the confinement of double-skin tubes to encased concrete, resulting in a higher axial compressive strength and a non-uniform stress distribution; increasing the material strengths of concrete, outer tubes and inner tubes results in an approximately linear enhancement in axial bearing capacity; enhancing the diameter-to-thickness ratios of outer tubes and inner tubes can decrease the bearing capacity of SSCDS composite tubes; and the axial compression strength of SSCDS composite tubes with a higher hollow ratio of 0.849 tends to decrease with increasing outer hydraulic pressure. A practical method that integrates the effects of dual hydraulic pressures was developed and validated for the strength calculation of SSCDS composite tubes. This research provides fundamental guidelines for the application of pipe-in-pipe structures in deep-sea engineering. |
| format | Article |
| id | doaj-art-f8a2a3aa4bae48babb0c5d566ecfe052 |
| institution | Kabale University |
| issn | 2077-1312 |
| language | English |
| publishDate | 2024-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Journal of Marine Science and Engineering |
| spelling | doaj-art-f8a2a3aa4bae48babb0c5d566ecfe0522024-12-27T14:33:04ZengMDPI AGJournal of Marine Science and Engineering2077-13122024-11-011212214010.3390/jmse12122140Concentric Compressive Behavior and Design of Stainless Steel–Concrete Double-Skin Composite Tubes Influenced by Dual Hydraulic PressuresJian-Tao Wang0Yang Yang1Kai-Lin Yang2Deng-Long Hu3Long-Bo Xu4Jun-Xin Li5School of Civil Engineering, Xi’an University of Architecture and Technology, Xi’an 710055, ChinaSchool of Civil Engineering, Xi’an University of Architecture and Technology, Xi’an 710055, ChinaSchool of Civil Engineering, Xi’an University of Architecture and Technology, Xi’an 710055, ChinaSchool of Civil Engineering, Xi’an University of Architecture and Technology, Xi’an 710055, ChinaSchool of Civil Engineering, Xi’an University of Architecture and Technology, Xi’an 710055, ChinaZhongmin Mingtai Group Co., Ltd., Xiamen 361000, ChinaThe external hydraulic pressure and internal medium pressure acting on submarine pipelines can lead to the coupling effect of active and passive constraints on the mechanical performance of steel–concrete double-skin composite tubes, resulting in a significantly different bearing capacity mechanism compared to terrestrial engineering. In this paper, the full-range concentric compressive mechanism of new-type stainless steel–concrete double-skin (SSCDS) composite tubes subjected to dual hydraulic pressure was analyzed by the finite element method. The influence of geometric–physical parameters at various water depths was discussed. The key results reveal that imposing dual hydraulic pressures significantly improves the confinement of double-skin tubes to encased concrete, resulting in a higher axial compressive strength and a non-uniform stress distribution; increasing the material strengths of concrete, outer tubes and inner tubes results in an approximately linear enhancement in axial bearing capacity; enhancing the diameter-to-thickness ratios of outer tubes and inner tubes can decrease the bearing capacity of SSCDS composite tubes; and the axial compression strength of SSCDS composite tubes with a higher hollow ratio of 0.849 tends to decrease with increasing outer hydraulic pressure. A practical method that integrates the effects of dual hydraulic pressures was developed and validated for the strength calculation of SSCDS composite tubes. This research provides fundamental guidelines for the application of pipe-in-pipe structures in deep-sea engineering.https://www.mdpi.com/2077-1312/12/12/2140SSCDS composite tubescompressive behaviordual hydraulic pressureparametric studycalculation method |
| spellingShingle | Jian-Tao Wang Yang Yang Kai-Lin Yang Deng-Long Hu Long-Bo Xu Jun-Xin Li Concentric Compressive Behavior and Design of Stainless Steel–Concrete Double-Skin Composite Tubes Influenced by Dual Hydraulic Pressures Journal of Marine Science and Engineering SSCDS composite tubes compressive behavior dual hydraulic pressure parametric study calculation method |
| title | Concentric Compressive Behavior and Design of Stainless Steel–Concrete Double-Skin Composite Tubes Influenced by Dual Hydraulic Pressures |
| title_full | Concentric Compressive Behavior and Design of Stainless Steel–Concrete Double-Skin Composite Tubes Influenced by Dual Hydraulic Pressures |
| title_fullStr | Concentric Compressive Behavior and Design of Stainless Steel–Concrete Double-Skin Composite Tubes Influenced by Dual Hydraulic Pressures |
| title_full_unstemmed | Concentric Compressive Behavior and Design of Stainless Steel–Concrete Double-Skin Composite Tubes Influenced by Dual Hydraulic Pressures |
| title_short | Concentric Compressive Behavior and Design of Stainless Steel–Concrete Double-Skin Composite Tubes Influenced by Dual Hydraulic Pressures |
| title_sort | concentric compressive behavior and design of stainless steel concrete double skin composite tubes influenced by dual hydraulic pressures |
| topic | SSCDS composite tubes compressive behavior dual hydraulic pressure parametric study calculation method |
| url | https://www.mdpi.com/2077-1312/12/12/2140 |
| work_keys_str_mv | AT jiantaowang concentriccompressivebehavioranddesignofstainlesssteelconcretedoubleskincompositetubesinfluencedbydualhydraulicpressures AT yangyang concentriccompressivebehavioranddesignofstainlesssteelconcretedoubleskincompositetubesinfluencedbydualhydraulicpressures AT kailinyang concentriccompressivebehavioranddesignofstainlesssteelconcretedoubleskincompositetubesinfluencedbydualhydraulicpressures AT denglonghu concentriccompressivebehavioranddesignofstainlesssteelconcretedoubleskincompositetubesinfluencedbydualhydraulicpressures AT longboxu concentriccompressivebehavioranddesignofstainlesssteelconcretedoubleskincompositetubesinfluencedbydualhydraulicpressures AT junxinli concentriccompressivebehavioranddesignofstainlesssteelconcretedoubleskincompositetubesinfluencedbydualhydraulicpressures |