Optimization of Steel Consumption for Prestressed Spatial Arch-Supported Partial Single-Layer Reticulated Shells

Han-Ming Zhang, Jing Chen, Zhuo-Qun Liu and Jian-Chun Xiao ()
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Han-Ming Zhang: Research Center of Space Structures, Guizhou University, Guiyang 550025, China
Jing Chen: Research Center of Space Structures, Guizhou University, Guiyang 550025, China
Zhuo-Qun Liu: Research Center of Space Structures, Guizhou University, Guiyang 550025, China
Jian-Chun Xiao: Research Center of Space Structures, Guizhou University, Guiyang 550025, China

Sustainability, 2023, vol. 15, issue 6, 1-20

Abstract: Steel smelting and production produces a large amount of exhaust gas, which is damaging to the environment. Prestressed spatial arch-supported partial single-layer reticulated shells (PSASPSRSs) are introduced to promote sustainable development in the construction industry. An optimization strategy based on uniform design experiments and iterations is proposed with respect to the design of PSASPSRSs. The optimization aims to reduce steel consumption as much as possible. The optimization constraint takes into account the stability coefficient, frequency, and deflection of the structures. The search space gradually shrinks around the local optimal solution and moves toward the global optimal solution during the optimization process. The optimization procedure stops when the error between local optimal solutions is less than the permitted error of 5%. The tensile force of the prestressed cable, the unified design stress ratio of the members, and the radial grid number of the single-layer reticulated shells act as optimization variables in the finite element model. The parametric analysis revealed that the radial grid number of single-layer reticulated shells significantly affected steel consumption, which was reduced by 13% in the optimized structure. The effectiveness and the practicality of the proposed optimization strategy in the initial design of complicated space grid structures are systematically illustrated.

Keywords: reticulated shells; sustainable development; steel consumption; finite element; uniform design (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2023
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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