Numerical modeling on concrete structures and steel–concrete composite frame structures |
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| Affiliation: | 1. College of Civil Engineering and Architecture, Guangxi University, Nanning 530004, PR China;2. Guangxi Key Laboratory of Disaster Prevention and Engineering Safety, Guangxi University, Nanning 530004, PR China;3. School of Civil and Environmental Engineering, Nanyang Technological University, Singapore;1. Department of Civil and Environmental Engineering, National University of Singapore, Singapore;2. College of Civil Engineering, Nanjing Tech University, Nanjing, China;3. School of Civil Engineering, Tianjin University, Tianjin 300072, China;4. Key Laboratory of Coast Civil Structure Safety of Ministry of Education, Tianjin University, Tianjin 300072, China |
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| Abstract: | A steel–concrete composite fiber beam-column model is developed in this study. The composite fiber beam-column model consists of a preprocessor program that is used to divide a composite section into fibers and a group of uniaxial hysteretic material constitutive models coded in the user defined subprogram UMAT in ABAQUS. The steel–concrete composite fiber beam-column model is suitable for global elasto-plastic analysis on composite frames with rigid connections subjected to the combined action of gravity and cyclic lateral loads. The model is verified by a large number of experiments and the results show that the developed composite fiber model possesses better accuracy and broader applicability compared with a traditional finite element model. Although the fiber beam-column model neglects the slip between the steel beam and concrete slab, there are essentially no effects on the global calculation results of steel–concrete composite frames. The proposed model has a simple modeling procedure, high calculation efficiency and great advantage when it is used to analyze composite frames subjected to cyclic loading due to earthquake. |
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| Keywords: | B Mechanical properties B Plastic deformation B Strength D Mechanical testing |
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