Optimization of Geometrical Characteristics of Building by Using Diagrid System against Lateral Forces

DOI

No DOI

Published In

Volume 5, Issue 1 (2024)

Published Online

January-February 2024

Pages

32-36

Article Type

Research Article

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In this present era of population growth and scarcity of available land, engineers and architects are bound to construct high-rise buildings. Lateral loads are considered as most dominant factor in the construction of high-rise buildings. To improve the efficiency of high-rise buildings, new structural systems like diagrid and hexa-grid are introduced. A Diagrid structural system resists lateral load by presence of inclined columns in the periphery of the building. In this study, various diagrid models with different diagrid angles were analyzed through pushover analysis by using FEMA 356 & ATC 40 and the results were compared with a conventional frame building of same dimension. Pushover analysis is a good way of accessing the sequence of failure by indicating hinges. The method can be used where the structure needs to be fine-tuned or it needs to be retrofitted. In this study it was found that diagrid performs well against lateral forces in comparison to conventional frame building. The hinge results of test beam showed that the 1-story diagrid module gave around 70% lower values of moment at plastic stage in comparison to simple frame structure. The performance point of all the diagrids were also better than simple frame with around 70% plus values. The story displacement value for all the diagrid modules was efficient in relation to simple frame structure with almost 70% lower displacement values. This study suggests that the usage of diagrids in building helps in improving performance of tall structures and also helps in reducing the overall cost of the structure.