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Structural Engineering and Mechanics Volume 43, Number 6, September25 2012 , pages 711-724 DOI: https://doi.org/10.12989/sem.2012.43.6.711 |
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Evaluation of structural outrigger belt truss layouts for tall buildings by using topology optimization |
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Dong-Kyu Lee, Jin-Ho Kim, Uwe Starossek and Soo-Mi Shin
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| Abstract | ||
| The goal of this study is to conceptually orientate optimized layouts of outrigger belt trusses which are in widespread use today in the design of tall buildings by strut-and-tie truss models utilizing a topology optimization method. In this study unknown strut-and-tie models are realized by using a typical SIMP method of topology optimization methods. In tradition strut-and-tie model designs find the appropriate strut-and-tie trusses along force paths with respect to elastic stress distribution, and then engineers or designers determine the most proper truss models by experience and intuition. It is linked to a trial-and-error procedure based on heuristic strategies. The presented strut-and tie model design by using SIMP provides that belt truss models are automatically and robustly produced by optimal layout information of struts-and-ties conforming to force paths without any trial-and-error. Numerical applications are studied to verify that outrigger belt trusses for tall buildings are optimally chosen by the proposed method for both static and dynamic responses. | ||
| Key Words | ||
| outrigger belt truss; topology optimization; tall buildings; strut-and-ties | ||
| Address | ||
| Dong-Kyu Lee: Architecture & Offshore Research Department, Steel Structure Research Division, Research Institute of Industrial Science & Technology, Korea Jin-Ho Kim: Architecture & Offshore Research Department, Steel Structure Research Division, Research Institute of Industrial Science & Technology, Korea Uwe Starossek: Structural Analysis and Steel Structures Institute, Hamburg University of Technology, Germany Soo-Mi Shin: Research Institute of Industrial Technology, Pusan National University, Korea | ||