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| Finite element analysis on seismic performance of fully bolted prefabricated steel frame with external light wall panel |
| Received:October 27, 2022 Revised:December 11, 2022 |
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| DOI：10.7511/jslx20221027001 |
| KeyWord:steel frame fully bolted prefabricated Lightweight wall panels hysteretic performance Finite element analysis |
| Author | Institution |
| 樊敏 |
西安理工大学 土木建筑工程学院, 西安 |
| 郭宏超 |
西安理工大学 土木建筑工程学院, 西安 |
| 李慎 |
西安理工大学 土木建筑工程学院, 西安 |
| 王振山 |
西安理工大学 土木建筑工程学院, 西安 |
| 王华强 |
西安理工大学 土木建筑工程学院, 西安 |
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| Abstract: |
| Based on the experimental research on the seismic performance of a fully bolted prefabricated steel frame with an external integrated lightweight thermal insulation decorative wall panel,the commercial finite element software ABAQUS was used to carry out a refined nonlinear finite element analysis of the structure in this paper.The hysteresis performance,structural capacity,stress distribution and failure mode of the structure were investigated,and an improved design scheme for setting the column base and keel stiffeners was proposed.Besides,the key design parameters such as the number of bolts of the horizontal and vertical plates of the top and seat L-shaped angles,the types of stiffeners,the structural height-span ratio and the axial compression ratio are also analyzed.The results show that the hysteresis performance of the test can be accurately simulated by the finite element modeling method in this paper,the maximum difference between the predicted ultimate bearing capacity and the experimental one is 8.86%,and the failure mode and stress distribution are highly consistent with the test.The column base and keel stiffeners make the column base flanges deform together,reduce the local buckling of the flanges,avoid the stress concentration of the keel connection welds,and significantly improve the structural bearing capacity.By optimizing the design parameters such as the number of bolts and the types of stiffeners of the top and seat L-shaped angles,the structural capacity can be further improved.In the actual project,the structural height-span ratio and the axial compression ratio should be reasonably controlled to meet the seismic fortification requirements. |
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