Assessment on the Progressive Collapse Resistance of a Long-Span Curved Spatial Grid Structure with Main Trusses

The progressive collapse resistance of the terminal building of Zhongchuan Airport in Lanzhou, China was studied, which is a long-span curved spatial grid structure with main trusses. Firstly, the finite element model was built using MSC. Marc software adopting the fiber model based on material. Sec...

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Bibliographic Details
Published in:KSCE journal of civil engineering 2022, 26(3), , pp.1239-1253
Main Authors: Zhou, Guangpan, Song, Qianen, Li, Aiqun, Shen, Shungao, Zhou, Qing, Wang, Bin
Format: Article
Language:English
Subjects:
Airport terminals
Airports
Analysis
Architecture
Axial compression
Catastrophic collapse
Civil Engineering
Collapse
Components
Compression
Compression ratio
Concrete
Concrete columns
Dynamic analysis
Engineering
Finite element method
Geotechnical Engineering & Applied Earth Sciences
Industrial Pollution Prevention
Load
Mathematical models
Nonlinear dynamics
Parametric analysis
Reinforced concrete
Sensitivity analysis
Steel pipes
Steel tubes
Structural Engineering
Structural response
Tensile strength
Terrorism
Trusses
토목공학
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Summary:The progressive collapse resistance of the terminal building of Zhongchuan Airport in Lanzhou, China was studied, which is a long-span curved spatial grid structure with main trusses. Firstly, the finite element model was built using MSC. Marc software adopting the fiber model based on material. Secondly, an improved method of zoned concept judgment and sensitivity analysis was proposed to determine the key components. Thirdly, the initial failure components were removed individually based on the alternate load path method (AP method). The responses of remaining structure were calculated using nonlinear dynamic analysis method. Lastly, the influences brought by the cross-sectional sizes of grid members were investigated through conducting parametric analysis. According to the results, the proposed selection method can avoid omitting the key components. The structural responses are significant when removing the concrete filled steel tubular (CFST) column SC14 directly supporting the front middle part of the roof, with a maximum vertical displacement of 10 m at cantilever end, which should be focused on for this kind of large-span spatial structure. In addition, the tensile strength and cross-sectional area of the upper and lower chords should be increased by 20% to enhance the progressive collapse resistance of the structure, and the changes of axial compression ratios of the columns supporting the roof have little effects.
ISSN:1226-7988
1976-3808
DOI:10.1007/s12205-021-5371-1