Multi-scale numerical simulation analysis of CFST column-composite beam frame under a column-loss scenario

doi:10.1016/j.jcsr.2022.107151

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	Multi-scale numerical simulation analysis of CFST column-composite beam frame under a column-loss scenario
	Zheng, Long; Wang, Wen-Da
刊名	Journal of Constructional Steel Research
	2022-03-01
卷号	190
关键词	Computational efficiency Concretes Efficiency Numerical methods Numerical models Structural frames Column loss Column-loss scenario Composite beam Concrete filled steel tubular columns Concrete-filled steel tubular column-composite beam frame Model-based OPC Multi-scale element Multi-scales Progressive collapse Simplified simulation
ISSN号	0143-974X
DOI	10.1016/j.jcsr.2022.107151
英文摘要	Experimental studies are costly for human and financial resources, while numerical simulation studies can further amplify the conclusions based on experimental results. The conventional numerical model based on brick elements and beam-shell elements is computationally inefficient and inaccurate, respectively. It is advisable to develop a simplified simulation method that ensures computing efficiency while not losing computational accuracy. Consequently, this paper innovatively proposed a numerical simulation method that integrates multi-scale elements modelling and simplified non-essential components, significantly increasing the computing efficiency and accuracy. Subsequently, the concrete-filled steel tubular (CFST) column-composite beam frame models based on the previous tested specimens were numerically developed and studied, considering different simulation methods, column-loss scenarios, and number of storeys. The numerical results identified the cantilevered deep beam effect in a multi-storey composite frame under an edge column-loss scenario, and the simply supported deep beam effect under a penultimate column-loss or a middle column-loss scenario, both reasonably represent the internal force pattern. Furthermore, to enhance the capacity of composite frames to resist progressive collapse, two improvement alternatives were proposed, i.e., fully bolted connection and pre-stressed strand device. © 2021
WOS研究方向	Construction & Building Technology ; Engineering
语种	英语
出版者	Elsevier Ltd
WOS记录号	WOS:000753399800004
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/157967]
专题	土木工程学院
作者单位	School of Civil Engineering, Lanzhou University of Technology, Lanzhou; 730050, China
推荐引用方式 GB/T 7714	Zheng, Long,Wang, Wen-Da. Multi-scale numerical simulation analysis of CFST column-composite beam frame under a column-loss scenario[J]. Journal of Constructional Steel Research,2022,190.
APA	Zheng, Long,&Wang, Wen-Da.(2022).Multi-scale numerical simulation analysis of CFST column-composite beam frame under a column-loss scenario.Journal of Constructional Steel Research,190.
MLA	Zheng, Long,et al."Multi-scale numerical simulation analysis of CFST column-composite beam frame under a column-loss scenario".Journal of Constructional Steel Research 190(2022).