Topology and size optimization for X-bracing system of nonlinear inelastic space steel frames

  • Qui X.Lieu Faculty of Civil Engineering, Ho Chi Minh City University of Technology (HCMUT), 268 Ly Thuong Kiet Street, District 10, Ho Chi Minh City, Vietnam
  • Khanh D. Dang Faculty of Civil Engineering, Ho Chi Minh City University of Technology (HCMUT), 268 Ly Thuong Kiet Street, District 10, Ho Chi Minh City, Vietnam
  • Van Hai Luong Faculty of Civil Engineering, Ho Chi Minh City University of Technology (HCMUT), 268 Ly Thuong Kiet Street, District 10, Ho Chi Minh City, Vietnam
  • Son Thai Faculty of Civil Engineering, Ho Chi Minh City University of Technology (HCMUT), 268 Ly Thuong Kiet Street, District 10, Ho Chi Minh City, Vietnam
DOI: https://doi.org/10.31814/stce.huce(nuce)2022-16(3)-06
Keywords: advanced design method, topology and size optimization, X-bracing system, nonlinear inelastic space steel frames, adaptive hybrid evolutionary firefly algorithm (AHEFA)

Abstract

In this article, a Python-programmed advanced design paradigm is firstly introduced to topology and size optimization of the X-bracing system of nonlinear inelastic space steel frames. For that purpose, an advanced analysis method considering both geometric and material nonlinearities is utilized as an effective finite element analysis (FEA) solver. In which, X-bracing members are modeled by truss elements, while the beam and column members are simulated by beam-column ones. The bracing members’ cross-sectional area and their position are respectively treated as discrete size and topology design variables. The problem aims to minimize the weight of X-bracing system so that the constraints on the strength, inter-story drift and maximum displacement are satisfied. An adaptive hybrid evolutionary firefly algorithm (AHEFA) is employed as an optimizer. Numerical examples are exhibited to illustrate the powerful ability of the present methodology.

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Published
29-06-2022
How to Cite
X.Lieu, Q., Dang, K. D., Luong, V. H., & Thai, S. (2022). Topology and size optimization for X-bracing system of nonlinear inelastic space steel frames. Journal of Science and Technology in Civil Engineering (JSTCE) - HUCE, 16(3), 71-83. https://doi.org/10.31814/stce.huce(nuce)2022-16(3)-06
Issue
Vol 16 No 3 (2022)
Section
Research Papers

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