Abstract
For complex structures, where there are great differences between the structural form in the construction process and the design forming state, mechanical analysis of the construction process is required. The dendritic structure on Nanjing Niushou Mountain is taken as an engineering case study, with a narrow construction space, weak construction platform, and difficulty in setting the equipment in the site. A new construction method, self‐balancing elevating scheme, is introduced according to the special condition of the construction field. The lifting frame and the connection joint between the trunk and the branch employed in the self‐balancing elevating scheme are optimized according to the structure’s behavior. A construction monitoring scheme was adopted in this project to ensure construction safety. The maximum cable force and deformation occurred at the beginning of the lifting. The construction process simulation was conducted by space structure design software 3D3S. The analysis results were well consistent with the in situ construction monitoring results. The analysis results show that the self‐balancing elevating scheme could satisfy the construction requirement on the special construction condition and provide reference on future practical application.
Highlights
Bionic structure is imitating biological stress principles to design buildings
Xiao [1] described the history of integral lifting technology, and some typical engineering applications were shown
The dendritic structure on Nanjing Niushou Mountain is taken as an engineering case study with narrow construction space, weak construction platform, and difficulty in setting the equipment in the site
Summary
Bionic structure is imitating biological stress principles to design buildings. Dendritic form is common in nature, and dendritic structure was first put forward as a structure concept by German architect Otto in the 1960s. Lu et al [4] introduced the construction process of T3 terminal building of Chongqing Jiangbei International Airport; the high-altitude slip method was adopted in the steel structure engineering of the main building of T3 terminal building, which was a space curved surface with lifting height of 49 m and lifting weight of 6000 t. Self-balancing elevating construction scheme meant synchronously or asynchronously lifting a pair or more branches and setting a certain number of cables to balance force generated in the lifting process, which could make the whole system in balance. For this project, as the branches have a big difference in weight, elevating schemes with asynchronously lifting were adopted. Each section was 2 m tall, and there were 12 sections in total. e
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