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| Nonlinear numerical analysis on mechanical performance of steel reinforced recycled concrete columns-steel beams composite frame under horizontal loads |
| Received:May 21, 2019 Revised:July 29, 2019 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7511/jslx20190521001 |
| KeyWord:profile steel reinforced recycled concrete column steel beam composite frame numerical analysis nonlinear behavior |
| Author | Institution |
| 马辉 |
西安理工大学 土木建筑工程学院, 西安 |
| 席嘉诚 |
西安理工大学 土木建筑工程学院, 西安 |
| 黄成 |
西安理工大学 土木建筑工程学院, 西安 |
| 张鹏 |
西安理工大学 土木建筑工程学院, 西安 |
| 董静 |
西安理工大学 土木建筑工程学院, 西安 |
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| Abstract: |
| Based on the quasi-static test of a steel reinforced recycled concrete columns-steel beams composite frame,its finite element model was established in Abaqus software and a non-linear numerical analysis was carried out.The deformation diagrams,stress nephogram and load-displacement skeleton curves of the composite frame were obtained by finite element calculation.The failure characteristics of the composite frame were analyzed and the rationality of the finite element model was also verified,and the parameters of the composite frame are analyzed.The results show that the calculation results are in good agreement with the test results,and the numerical simulation model can simulate the mechanical behavior of the composite frame well.The composite frame conforms to the failure mechanism of strong column and weak beam.In addition,increasing the strength of steel products or recycled concrete is beneficial to the bearing capacity and stiffness of the composite frame,but the improvement of the material strength is disadvantageous to the deformation capacity of the frame.The bearing capacity and stiffness of the frame increase with the increase of beam-column linear stiffness.Increasing the axial compression ratio is unfavorable to the seismic performance and ductility of composite frames.The research conclusion can be provide a reference for the engineering application of this kind of green composite frames. |
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