Study on the combination of Diagrid and Hexagrid structural systems for tall buildings

Document Type : Research Article

Authors

Faculty of Engineering, Lorestan University, Khorramabad, Iran.

Abstract

Nowadays, the close confrontation between structure and architecture has led to the invention of new structural systems, such as the structural system of Diagrid and Hexagrid. These systems have attracted the attention of many architects and structural engineers due to their structural efficiency and architectural aesthetic potential provided by their unique geometric configuration. Hexagrid structural system has high ductility, and Diagrid structural system has high stiffness. One of the most important principles in the field of high-rise structures is the use of an appropriate structural system that have a significant architecture, in addition to satisfying the three requirements of stiffness, resistance, and ductility in the design of the structure. Therefore, in this study, the combination of two systems of Diagrid and Hexagrid at the height of the structure in order to take advantage of their benefits is proposed. For this purpose, four structures of Diagrid, Hexagrid, Diagrid-Hexagrid compound structure and Hexagrid-Diagrid compound structure were analyzed and designed using the linear dynamic method with ETABS software. Then, their seismic performance was evaluated with PERFORM 3D software using non-linear static analysis in terms of lateral displacement, stiffness, ductility, lateral resistance and behavior factor. Comparison of the structural analysis results shows that the Diagrid-Hexagrid compound structure has a more favorable performance against lateral forces than the two systems of Diagrid and Hexagrid.    

Keywords

References

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Amirkabir Journal of Civil Engineering
Volume 54, Issue 9
December 2022
Pages 3617-3634

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