Sustainability Concepts in the Design of High-Rise ...

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Third International Workshop on Design in Civil and Environmental Engineering (DCCE3) Technical University of Denmark

Sustainability Concepts in the Design of High-Rise Buildings
The Case of Diagrid Systems
Paper
Author:Giulia Milana (Department of Structural and Geotechnical Engineering, Sapienza University of Rome, Italy)
Konstantinos Gkoumas (Department of Structural and Geotechnical Engineering, Sapienza University of Rome, Italy)
Franco Bontempi (Department of Structural and Geotechnical Engineering, Sapienza University of Rome, Italy)
Date: 2014-08-22     Track: Main     Session: 1
DOI:10.5072/dtu:2913

One of the evocative structural design solutions for sustainable tall buildings is embraced by the diagrid (diagonal grid) structural scheme. Diagrid, with a perimeter structural configuration characterized by a narrow grid of diagonal members involved both in gravity and in lateral load resistance, has emerged as a new design trend for tall-shaped complex structures, and is becoming increasingly popular due to aesthetics and structural performance. Since it requires less structural steel than a conventional steel frame, it provides for a more sustainable structure. This study focuses on the structural performance of a steel tall building, using FEM nonlinear analyses. Numerical comparisons between a traditional outrigger system and different diagrid configurations (with three different diagrid inclinations) are presented for a building of 40 stories, with a total height of 160m, and a footprint of 36m x 36m. The sustainability of the building (in terms of structural steel weight saving) is assessed, together with the structural behavior.