Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Progressive Collapse of Multi-story Frame Structure Under Column Loss Scenarios
Progressive collapse is the result of a failure of structural components that affect the entire structure, ultimately causing the global collapse of the structure or its significant proportion. The sudden removal of the column increases the bending moment and shear force at the surrounding frames significantly. In this case study, a seven-story frame structure has been investigated under accidental column loss using finite-element (FE) method. In addition to regular loadings, the dynamic load is applied as a time function to simulate the column loss scenario and collapse progression. In the analysis process, one-, two-, or three-column loss scenarios are analyzed to understand dynamic load redistribution and their effect on the global structure. As key parameters of the structure, maximum story drift, displacement, inter-story drift, story shear, base shear, and overturning moments are presented with the time. It is important to note that the building started its permanent deformation after 10 s, approximately. The research found that the vulnerability of the structure escalated as more columns were removed. The affected loading area linked to collapse vulnerability determines the amount of energy the building needed to absorb. The response of the structure also suggested that the damping properties of the structure are also playing a key role in the process of delaying the global collapse of the structure.
Progressive Collapse of Multi-story Frame Structure Under Column Loss Scenarios
Progressive collapse is the result of a failure of structural components that affect the entire structure, ultimately causing the global collapse of the structure or its significant proportion. The sudden removal of the column increases the bending moment and shear force at the surrounding frames significantly. In this case study, a seven-story frame structure has been investigated under accidental column loss using finite-element (FE) method. In addition to regular loadings, the dynamic load is applied as a time function to simulate the column loss scenario and collapse progression. In the analysis process, one-, two-, or three-column loss scenarios are analyzed to understand dynamic load redistribution and their effect on the global structure. As key parameters of the structure, maximum story drift, displacement, inter-story drift, story shear, base shear, and overturning moments are presented with the time. It is important to note that the building started its permanent deformation after 10 s, approximately. The research found that the vulnerability of the structure escalated as more columns were removed. The affected loading area linked to collapse vulnerability determines the amount of energy the building needed to absorb. The response of the structure also suggested that the damping properties of the structure are also playing a key role in the process of delaying the global collapse of the structure.
Progressive Collapse of Multi-story Frame Structure Under Column Loss Scenarios
Lecture Notes in Civil Engineering
Alam, M. Shahria (Herausgeber:in) / Hasan, G. M. Jahid (Herausgeber:in) / Billah, A. H. M. Muntasir (Herausgeber:in) / Islam, Kamrul (Herausgeber:in) / Emtiaz, M. M. (Autor:in) / Tasnim, Jarin (Autor:in) / Ahmed, Khondaker Sakil (Autor:in)
International Conference on Advances in Civil Infrastructure and Construction Materials ; 2023 ; Dhaka, Bangladesh
31.08.2024
9 pages
Aufsatz/Kapitel (Buch)
Elektronische Ressource
Englisch
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