Nonlinear Analysis and Optimization of Recycled Aggregate Concrete Cross-Sections Based on Restoring Force Models
This research presents a simplified approach using a uniaxial restoring force model to analyze the seismic response of recycled aggregate concrete (RAC) frames. Nonlinear simulations were conducted to explore how factors like axial compression ratio, reinforcement ratio, and cross-sectional geometry...
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| Language: | English |
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MDPI AG
2025-01-01
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| Online Access: | https://www.mdpi.com/2075-5309/15/2/173 |
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| author | Chaolong Qi Changqing Wang Zhiming Ma |
| author_facet | Chaolong Qi Changqing Wang Zhiming Ma |
| author_sort | Chaolong Qi |
| collection | DOAJ |
| description | This research presents a simplified approach using a uniaxial restoring force model to analyze the seismic response of recycled aggregate concrete (RAC) frames. Nonlinear simulations were conducted to explore how factors like axial compression ratio, reinforcement ratio, and cross-sectional geometry affect the ductility and seismic performance of RAC sections. The findings reveal that a reduction in the axial compression ratio from 0.60 to 0.57 results in a 15% increase in ductility, while a higher reinforcement ratio leads to a 20% enhancement. In addition, rectangular sections were found to be more sensitive to variations in material strength than square sections, offering key insights for structural optimization. The method proposed here also enhances computational efficiency by minimizing resource consumption and improving the convergence of nonlinear iterative procedures. These findings provide a theoretical foundation for optimizing the design and seismic evaluation of RAC structures, promoting their broader application in engineering practice. |
| format | Article |
| id | doaj-art-0ee9c0080f98440c9bace8b853c3d177 |
| institution | Kabale University |
| issn | 2075-5309 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Buildings |
| spelling | doaj-art-0ee9c0080f98440c9bace8b853c3d1772025-01-24T13:26:02ZengMDPI AGBuildings2075-53092025-01-0115217310.3390/buildings15020173Nonlinear Analysis and Optimization of Recycled Aggregate Concrete Cross-Sections Based on Restoring Force ModelsChaolong Qi0Changqing Wang1Zhiming Ma2Department of Civil Engineering, School of Civil Engineering and Architecture, Linyi University, Linyi 276005, ChinaDepartment of Civil Engineering, School of Mechanics and Engineering Science, Shanghai University, Shanghai 200444, ChinaCollege of Civil Science and Engineering, Yangzhou University, Yangzhou 225127, ChinaThis research presents a simplified approach using a uniaxial restoring force model to analyze the seismic response of recycled aggregate concrete (RAC) frames. Nonlinear simulations were conducted to explore how factors like axial compression ratio, reinforcement ratio, and cross-sectional geometry affect the ductility and seismic performance of RAC sections. The findings reveal that a reduction in the axial compression ratio from 0.60 to 0.57 results in a 15% increase in ductility, while a higher reinforcement ratio leads to a 20% enhancement. In addition, rectangular sections were found to be more sensitive to variations in material strength than square sections, offering key insights for structural optimization. The method proposed here also enhances computational efficiency by minimizing resource consumption and improving the convergence of nonlinear iterative procedures. These findings provide a theoretical foundation for optimizing the design and seismic evaluation of RAC structures, promoting their broader application in engineering practice.https://www.mdpi.com/2075-5309/15/2/173recycled aggregate concrete (RAC)cross-sectionnonlinear analysisductilityrestoring force model |
| spellingShingle | Chaolong Qi Changqing Wang Zhiming Ma Nonlinear Analysis and Optimization of Recycled Aggregate Concrete Cross-Sections Based on Restoring Force Models Buildings recycled aggregate concrete (RAC) cross-section nonlinear analysis ductility restoring force model |
| title | Nonlinear Analysis and Optimization of Recycled Aggregate Concrete Cross-Sections Based on Restoring Force Models |
| title_full | Nonlinear Analysis and Optimization of Recycled Aggregate Concrete Cross-Sections Based on Restoring Force Models |
| title_fullStr | Nonlinear Analysis and Optimization of Recycled Aggregate Concrete Cross-Sections Based on Restoring Force Models |
| title_full_unstemmed | Nonlinear Analysis and Optimization of Recycled Aggregate Concrete Cross-Sections Based on Restoring Force Models |
| title_short | Nonlinear Analysis and Optimization of Recycled Aggregate Concrete Cross-Sections Based on Restoring Force Models |
| title_sort | nonlinear analysis and optimization of recycled aggregate concrete cross sections based on restoring force models |
| topic | recycled aggregate concrete (RAC) cross-section nonlinear analysis ductility restoring force model |
| url | https://www.mdpi.com/2075-5309/15/2/173 |
| work_keys_str_mv | AT chaolongqi nonlinearanalysisandoptimizationofrecycledaggregateconcretecrosssectionsbasedonrestoringforcemodels AT changqingwang nonlinearanalysisandoptimizationofrecycledaggregateconcretecrosssectionsbasedonrestoringforcemodels AT zhimingma nonlinearanalysisandoptimizationofrecycledaggregateconcretecrosssectionsbasedonrestoringforcemodels |