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| Received:January 13, 2015 Revised:June 13, 2015 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7511/jslx201603006 |
| KeyWord:deep beam with openings simulation fracture-plastic strut-and-tie model internal force method stress graphic method nonlinear design |
| Author | Institution |
| 谭子希 |
湖南大学 土木工程学院, 长沙 |
| 刘霞 |
湖南大学 土木工程学院, 长沙 |
| 易伟建 |
湖南大学 土木工程学院, 长沙 |
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| Abstract: |
| The behavior of reinforced concrete (RC) deep beams is different from shallow beams and the situation becomes more complex since the presence of web openings.All codes presented are short of explaining the exact behavior of deep beams and the scope of application.However,no code provision exists for the deep beams with openings.In this paper,nonlinear finite element analysis method is used to the effectiveness of design methods for RC deep beams,including reinforcement bond-slip model and fracture-plastic model,which is suitable for nonlinear analysis of concrete structures.A series of RC deep beams with openings,are analyzed and the simulation results are found agreed well with test results.And it can exactly predict such as cracks,failure modes and limit strengths.It finds out that strut-and-tie model (STM) method is more optimized than the internal forces method and the stress graphical method among the present design methods.Based on these results,a new nonlinear design method,generally applying to all deep beams with opening,is presented and proved the most optimized one when compared capacity,ductility,steel amount and material utilization with the others. |
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