结构工程
跨度(工程)
序列(生物学)
材料科学
工程类
化学
生物化学
作者
Gang Yao,Jia Li,Yang Yang,Xiaodong Cai,Yan Zhou,Canwei Zhou,Ting Lei
出处
期刊:Buildings
[MDPI AG]
日期:2024-08-02
卷期号:14 (8): 2389-2389
标识
DOI:10.3390/buildings14082389
摘要
When constructing long-span spatial steel structures, the unformed structure is often incomplete and unstable. The construction sequence significantly influences the mechanical state of the structure during the construction stages (CSs), affecting both the path and time effects. This study examined the mechanical properties of the construction process using an actual project as a case study, comparing two methods: one-step forming and stage-by-stage forming. Critical turning points of stress and displacement during the CSs were identified as the initial installation and unloading stages. Stress concentrations frequently occurred at temporary support points, and peak displacements often appeared at the outer overhanging bars of the structure. A well-planned construction sequence can effectively manage the structure’s formation, boundaries, and loading to ensure construction safety and stability. The conclusions and analysis methods from this study provide valuable references for the design and construction of similar long-span spatial steel structures.
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