Research on Analysis Method of Mechanical Properties of Modular Steel Frame Based on Multi-Scale and Beam Elements

Jun Ma; Yan Wang

doi:10.13206/j.gjgS23021502

Volume 38 Issue 8

Aug. 2023

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Article Navigation > STEEL CONSTRUCTION(Chinese & English) > 2023 > 38(8): 1-13

Jun Ma, Yan Wang. Research on Analysis Method of Mechanical Properties of Modular Steel Frame Based on Multi-Scale and Beam Elements[J]. STEEL CONSTRUCTION(Chinese & English), 2023, 38(8): 1-13. doi: 10.13206/j.gjgS23021502

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Jun Ma, Yan Wang. Research on Analysis Method of Mechanical Properties of Modular Steel Frame Based on Multi-Scale and Beam Elements[J]. STEEL CONSTRUCTION(Chinese & English), 2023, 38(8): 1-13. doi: 10.13206/j.gjgS23021502

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Research on Analysis Method of Mechanical Properties of Modular Steel Frame Based on Multi-Scale and Beam Elements

doi: 10.13206/j.gjgS23021502

Jun Ma,
Yan Wang^,

School of Civil Engineering, Qingdao University of Technology, Qingdao 266033, China

Received Date: 2023-02-15

Abstract

Abstract

In order to explore the analysis method and applicability of prefabricated modular steel frame structures, the multi-scale finite element model is established in the ABAQUS finite element software to analyze static and dynamic characteristic. The static characteristic of beam element, solid element and multi-scale joint calculation models are compared and analyzed. The differences of beam element, solid element and multi-scale frame calculation model are compared from two aspects of internal force analysis and model analysis of modular structure. In addition, the multi-scale model is applied to the dynamic elastic-plastic time history analysis of the modular steel frame structure, and the dynamic response differences between the beam element and the multi-scale frame 6 to 12-story model are compared and analyzed. The results show that internal multi-point constraint method in ABAQUS can achieve the connection between beam element and solid element; the calculation accuracy of the multi-scale model is in good agreement with that of the solid element. Comparing the two models, the multi-scale calculation model can increase the calculation efficiency by about 40%; the dynamic modal analysis shows that the natural frequencies of the multi-scale model and the solid element are basically the same, which verifies the reliability of the multi-scale model calculation results; when the number of modular structure floors exceeds 10, the calculation accuracy of the beam element calculation model is greatly reduced, while the calculation accuracy of the multi-scale calculation model is stable.
- modular steel frame,
- beam elements,
- solid elements,
- multi-scale elements,
- interface connection

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References

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