Optimization of steel moment frames with panel-zone design using an adaptive differential evolution

  • Viet-Hung Truong Faculty of Civil Engineering, Thuyloi University, 175 Tay Son street, Dong Da district, Hanoi, Vietnam https://orcid.org/0000-0002-1109-7667
  • Ha Manh Hung Faculty of Building and Industrial Construction, National University of Civil Engineering, 55 Giai Phong road, Hai Ba Trung district, Hanoi, Vietnam
  • Pham Hoang Anh Faculty of Building and Industrial Construction, National University of Civil Engineering, 55 Giai Phong road, Hai Ba Trung district, Hanoi, Vietnam
  • Tran Duc Hoc Department of Construction Engineering and Management, Ho Chi Minh City University of Technology, Vietnam National University - HCMC, 268 Ly Thuong Kiet Street, District 10, Ho Chi Minh City, Vietnam
DOI: https://doi.org/10.31814/stce.nuce2020-14(2)-06

Abstract

Optimization of steel moment frames has been widely studied in the literature without considering shear deformation of panel-zones which is well-known to decrease the load-carrying capacity and increase the drift of structures. In this paper, a robust method for optimizing steel moment frames is developed in which the panel-zone design is considered by using doubler plates. The objective function is the total cost of beams, columns, and panel-zone reinforcement. The strength and serviceability constraints are evaluated by using a direct design method to capture the nonlinear inelastic behaviors of the structure. An adaptive differential evolution algorithm is developed for this optimization problem. The new algorithm is featured by a self-adaptive mutation strategy based on the p-best method to enhance the balance between global and local searches. A five-bay five-story steel moment frame subjected to several load combinations is studied to demonstrate the efficiency of the proposed method. The numerical results also show that panel-zone design should be included in the optimization process to yield more reasonable optimum designs.

Keywords:

direct design; differential evolution; optimization; panel-zone; steel frame.

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Published
17-04-2020
How to Cite
Truong, V.-H., Hung, H. M., Anh, P. H., & Hoc, T. D. (2020). Optimization of steel moment frames with panel-zone design using an adaptive differential evolution. Journal of Science and Technology in Civil Engineering (JSTCE) - HUCE, 14(2), 65-75. https://doi.org/10.31814/stce.nuce2020-14(2)-06
Issue
Vol 14 No 2 (2020)
Section
Research Papers

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