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http://dx.doi.org/10.12989/sem.2012.43.6.711

Evaluation of structural outrigger belt truss layouts for tall buildings by using topology optimization  

Lee, Dong-Kyu (Architecture & Offshore Research Department, Steel Structure Research Division, Research Institute of Industrial Science & Technology)
Kim, Jin-Ho (Architecture & Offshore Research Department, Steel Structure Research Division, Research Institute of Industrial Science & Technology)
Starossek, Uwe (Structural Analysis and Steel Structures Institute, Hamburg University of Technology)
Shin, Soo-Mi (Research Institute of Industrial Technology, Pusan National University)
Publication Information
Structural Engineering and Mechanics / v.43, no.6, 2012 , pp. 711-724 More about this Journal
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.
Keywords
outrigger belt truss; topology optimization; tall buildings; strut-and-ties;
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