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Study on the Mechanical Properties of Continuous Composite Beams under Coupled Slip and Creep
Steel–concrete continuous composite beams are widely used in buildings and bridges and have many economic benefits. Slip has always existed in composite beams and will reduce the stiffness of composite beams. The effect of creep under a long-term load will also be harmful. Many scholars ignore the c...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2023
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10343323/ https://www.ncbi.nlm.nih.gov/pubmed/37445055 http://dx.doi.org/10.3390/ma16134741 |
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author | Nan, Hongliang Wang, Peng Zhang, Qinmin Meng, Dayao Lei, Qinan |
author_facet | Nan, Hongliang Wang, Peng Zhang, Qinmin Meng, Dayao Lei, Qinan |
author_sort | Nan, Hongliang |
collection | PubMed |
description | Steel–concrete continuous composite beams are widely used in buildings and bridges and have many economic benefits. Slip has always existed in composite beams and will reduce the stiffness of composite beams. The effect of creep under a long-term load will also be harmful. Many scholars ignore the combined effects of slip and creep. In order to more accurately study the mechanical properties of steel–concrete continuous composite beams under long-term loads, this paper will consider the combined actions of slip and creep. By combining the elastic theory and the age-adjusted effective modulus method, the differential equation of the composite beam is derived via the energy variational method. The analytical solutions of axial force, deflection and slip under a uniform load are obtained by substituting the relevant boundary conditions. The creep equation is used to simulate the behavior of concrete with time in ANSYS. The analytical solution is verified by establishing a finite element model of continuous composite beams considering slip and creep. The results suggest the following: the analytical solution is consistent with the finite element simulation results, which verifies the correctness of the analytical solution. Considering the slip and creep effects will increase the deflection of the composite beam and the bending moment of the steel beam, reduce the bending moment of the concrete slab and have a significant impact on the structural performance of the continuous composite beam. The research results considering the coupling effect of slip and creep on continuous composite beams can provide a theoretical basis for related problems. |
format | Online Article Text |
id | pubmed-10343323 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2023 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-103433232023-07-14 Study on the Mechanical Properties of Continuous Composite Beams under Coupled Slip and Creep Nan, Hongliang Wang, Peng Zhang, Qinmin Meng, Dayao Lei, Qinan Materials (Basel) Article Steel–concrete continuous composite beams are widely used in buildings and bridges and have many economic benefits. Slip has always existed in composite beams and will reduce the stiffness of composite beams. The effect of creep under a long-term load will also be harmful. Many scholars ignore the combined effects of slip and creep. In order to more accurately study the mechanical properties of steel–concrete continuous composite beams under long-term loads, this paper will consider the combined actions of slip and creep. By combining the elastic theory and the age-adjusted effective modulus method, the differential equation of the composite beam is derived via the energy variational method. The analytical solutions of axial force, deflection and slip under a uniform load are obtained by substituting the relevant boundary conditions. The creep equation is used to simulate the behavior of concrete with time in ANSYS. The analytical solution is verified by establishing a finite element model of continuous composite beams considering slip and creep. The results suggest the following: the analytical solution is consistent with the finite element simulation results, which verifies the correctness of the analytical solution. Considering the slip and creep effects will increase the deflection of the composite beam and the bending moment of the steel beam, reduce the bending moment of the concrete slab and have a significant impact on the structural performance of the continuous composite beam. The research results considering the coupling effect of slip and creep on continuous composite beams can provide a theoretical basis for related problems. MDPI 2023-06-30 /pmc/articles/PMC10343323/ /pubmed/37445055 http://dx.doi.org/10.3390/ma16134741 Text en © 2023 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Nan, Hongliang Wang, Peng Zhang, Qinmin Meng, Dayao Lei, Qinan Study on the Mechanical Properties of Continuous Composite Beams under Coupled Slip and Creep |
title | Study on the Mechanical Properties of Continuous Composite Beams under Coupled Slip and Creep |
title_full | Study on the Mechanical Properties of Continuous Composite Beams under Coupled Slip and Creep |
title_fullStr | Study on the Mechanical Properties of Continuous Composite Beams under Coupled Slip and Creep |
title_full_unstemmed | Study on the Mechanical Properties of Continuous Composite Beams under Coupled Slip and Creep |
title_short | Study on the Mechanical Properties of Continuous Composite Beams under Coupled Slip and Creep |
title_sort | study on the mechanical properties of continuous composite beams under coupled slip and creep |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10343323/ https://www.ncbi.nlm.nih.gov/pubmed/37445055 http://dx.doi.org/10.3390/ma16134741 |
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