Evaluation of Seismic Performance of Combined Horizontal and Vertical Hexagrid Structural System for High-rise Buildings

Subject Areas : Structural Engineering

Yasaman Memarzadeh Kiani ¹ , Maryam Firoozi Nezamabadi ²

1 - M.Sc. Student, Department of Civil Engineering, South Tehran Branch, Islamic Azad University, Tehran ,Iran
2 - Assistant Professor, Department of Civil Engineering, South Tehran Branch, Islamic Azad University, Tehran ,Iran

Received: 2017-02-04 Accepted : 2017-04-08 Published : 2024-09-25

Keywords: tall building, nonlinear analysis, seismic performance, hexagrid,

Abstract :

Summary In this study, the seismic performance of hexagrid structures which are composed of horizontal and vertical hexagrid by using a transitional story, has been investigated. To this end, 10 models of 50-story hexagrid structures were designed. 9 models with horizontal hexagrid cells which transited to vertical cells using a transitional story, and a model of completely horizontal hexagrid have been designed. Finally, the seismic performance of these models were investigated and compared to the horizontal hexagrid structure to obtain the optimum location of the transitional story. According to the analyses results, combining horizontal and vertical hexagrid cells can strongly affect the seismic performance of the structure. Thus, choosing the optimum location of transitional story, regarding design priorities, is of significant importance.

References:

[1]     M. H. Gunel and H. E. Ilgin, "A proposal for the classification of structural systems of tall buildings," Building and Environment, vol. 42, pp. 2667-2675, 2007.

[2]     N. Mashhadiali and A. Kheyroddin, "Proposing the hexagrid system as a new structural system for tall buildings," The Structural Design of Tall and Special Buildings, vol. 22, pp. 1310-1329, 2013.

[3]     G. M. Montuori, M. Fadda, G. Perrella, and E. Mele, "Hexagrid–hexagonal tube structures for tall buildings: patterns, modeling, and design," The Structural Design of Tall and Special Buildings, vol. 24, pp. 912-940, 2015.

[4]     A. N. Peyman and J. Kim, "Beehive (Hexagrid), New Innovated Structural System for Tall Buildings," in CTBUH 2011 Seoul Conference, Korea, 2011.

[5]     PERFORM-3D V.5. Nonlinear analysis and Performance Assessment of 3D Structures Computers and Structures: Berkeley, CA.

[6]     ETABS. Structural Analysis Program. Computers and Structures: Berkeley, CA.

[7]     Standard No. 2800. Iranian Code of Practice for Seismic Resistant Design of Buildings.