Efficient form-finding algorithm for freeform grid structures based on inverse hanging method. (1st April 2022)

• Record Type: Journal Article
• Authors: Zhao, Zhongwei; Yu, Duo; Zhang, Tongrui; Zhang, Ni; Liu, Haiqing; Liang, Bing; Xian, Lina
• Is Part Of: Journal of building engineering. Volume 46(2022)
• Publication Date: 2022-04-01
• Subjects: Grid structure -- Form-finding analysis -- Inverse hanging method -- Branching column -- Freeform surface -- Fully stressed design; Building -- Periodicals; 690.05
• DOI: 10.1016/j.jobe.2021.103746
• Languages: English
• ISSNs: 2352-7102

Abstract

Abstract: Grid structures and branching columns have been widely adopted due to their high structural efficiency and novel appearance. High structural efficiency must be achieved through a strict form-finding analysis. Existing algorithms are mainly applicable for grid structures or branching columns only. However, the form-finding of upper grid structures and the lower branching columns are mutually affected. A form-finding algorithm is needed for grid structures supported by branching columns. In the present work, an efficient form-finding algorithm suitable for grid structures is initially proposed, and the feasibility of this algorithm is verified through three examples. Then, the form-finding algorithm for grid structures is integrated with the form-finding algorithm of branching columns. Results indicated that the proposed algorithm can be used for form-finding analysis of various grid structures supported by branching columns. This work was conducted using a general finite element analysis program and can be easily mastered by engineering designers while avoiding tedious programming. Highlights: An efficient form-finding algorithm suitable for grid structures is firstly proposed. The integrated form-finding algorithm for grid structures and branching columns is proposed. The mutually effect between the upper structures and the lower columns can be automatically considered.