Seismic Response Analysis of Steel–Concrete Composite Frame Structures with URSP Connectors
The uplift-restricted and slip-permitted (URSP) connector is a new type of connector used in steel–concrete composite structures that has been proven to improve the structural performance of negative moment regions. Since this connector changes the interface restraint between the slab and steel beam...
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| Format: | Article |
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MDPI AG
2022-12-01
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| Series: | Materials |
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| Online Access: | https://www.mdpi.com/1996-1944/15/23/8655 |
| _version_ | 1797462820669882368 |
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| author | Linli Duan Xin Nie Han Su Jike Tan |
| author_facet | Linli Duan Xin Nie Han Su Jike Tan |
| author_sort | Linli Duan |
| collection | DOAJ |
| description | The uplift-restricted and slip-permitted (URSP) connector is a new type of connector used in steel–concrete composite structures that has been proven to improve the structural performance of negative moment regions. Since this connector changes the interface restraint between the slab and steel beam, there is an imperative to study the seismic performance of steel–concrete composite frame systems with this new type of connector. In this study, the dynamic behavior of composite frame structures with URSP connectors under seismic loads was numerically investigated. First, a beam–shell mixed model was used and complex interfaces of different connectors were considered while establishing a numerical model to conduct elasto–plastic time history analysis under various seismic loads. This numerical model was validated with the frame sub-assemblage experimental results of quasi-static cyclic tests. Second, the model analysis results of structures with URSP connectors were obtained and compared with those of traditional structures. Third, dynamic response results including roof displacement, inter-story displacement, and the distribution and failure modes of plastic hinges were analyzed and compared. The comparisons indicated that the arrangement of full-span URSP connectors had a non-negligible influence on the dynamic behavior of the systems. The arrangement increased the maximum inter-story displacement by 31.5% and induced adverse effects in certain cases, which is not suggested in the application of URSP connectors. The partial arrangement of URSP connectors had little influence on the dynamic behavior of the systems, and the frame systems still showed a good seismic performance, which was the same as the traditional composite structural system. These findings may promote the application of URSP connectors in composite structures. |
| first_indexed | 2024-03-09T17:41:54Z |
| format | Article |
| id | doaj.art-a6e0ea0bc5f047629703a8579fc3be06 |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-09T17:41:54Z |
| publishDate | 2022-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-a6e0ea0bc5f047629703a8579fc3be062023-11-24T11:31:54ZengMDPI AGMaterials1996-19442022-12-011523865510.3390/ma15238655Seismic Response Analysis of Steel–Concrete Composite Frame Structures with URSP ConnectorsLinli Duan0Xin Nie1Han Su2Jike Tan3School of Civil Engineering, Central South University, Changsha 410075, ChinaKey Laboratory of Civil Engineering Safety and Durability of China Education Ministry, Department of Civil Engineering, Tsinghua University, Beijing 100084, ChinaSchool of Civil Engineering, Beijing Jiaotong University, Beijing 100044, ChinaState Key Laboratory of Mountain Bridge and Tunnel Engineering, Chongqing Jiaotong University, Chongqing 400074, ChinaThe uplift-restricted and slip-permitted (URSP) connector is a new type of connector used in steel–concrete composite structures that has been proven to improve the structural performance of negative moment regions. Since this connector changes the interface restraint between the slab and steel beam, there is an imperative to study the seismic performance of steel–concrete composite frame systems with this new type of connector. In this study, the dynamic behavior of composite frame structures with URSP connectors under seismic loads was numerically investigated. First, a beam–shell mixed model was used and complex interfaces of different connectors were considered while establishing a numerical model to conduct elasto–plastic time history analysis under various seismic loads. This numerical model was validated with the frame sub-assemblage experimental results of quasi-static cyclic tests. Second, the model analysis results of structures with URSP connectors were obtained and compared with those of traditional structures. Third, dynamic response results including roof displacement, inter-story displacement, and the distribution and failure modes of plastic hinges were analyzed and compared. The comparisons indicated that the arrangement of full-span URSP connectors had a non-negligible influence on the dynamic behavior of the systems. The arrangement increased the maximum inter-story displacement by 31.5% and induced adverse effects in certain cases, which is not suggested in the application of URSP connectors. The partial arrangement of URSP connectors had little influence on the dynamic behavior of the systems, and the frame systems still showed a good seismic performance, which was the same as the traditional composite structural system. These findings may promote the application of URSP connectors in composite structures.https://www.mdpi.com/1996-1944/15/23/8655uplift-restricted and slip-permitted (URSP) connectorsteel–concrete composite frame structuredynamic behaviorfinite elementtime history analysis |
| spellingShingle | Linli Duan Xin Nie Han Su Jike Tan Seismic Response Analysis of Steel–Concrete Composite Frame Structures with URSP Connectors Materials uplift-restricted and slip-permitted (URSP) connector steel–concrete composite frame structure dynamic behavior finite element time history analysis |
| title | Seismic Response Analysis of Steel–Concrete Composite Frame Structures with URSP Connectors |
| title_full | Seismic Response Analysis of Steel–Concrete Composite Frame Structures with URSP Connectors |
| title_fullStr | Seismic Response Analysis of Steel–Concrete Composite Frame Structures with URSP Connectors |
| title_full_unstemmed | Seismic Response Analysis of Steel–Concrete Composite Frame Structures with URSP Connectors |
| title_short | Seismic Response Analysis of Steel–Concrete Composite Frame Structures with URSP Connectors |
| title_sort | seismic response analysis of steel concrete composite frame structures with ursp connectors |
| topic | uplift-restricted and slip-permitted (URSP) connector steel–concrete composite frame structure dynamic behavior finite element time history analysis |
| url | https://www.mdpi.com/1996-1944/15/23/8655 |
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