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Structural Engineering and Mechanics Volume 37, Number 1, January10 2011 , pages 79-93 DOI: https://doi.org/10.12989/sem.2011.37.1.079 |
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Modeling of progressive collapse of a multi-storey structure using a spring-mass-damper system |
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Weifeng Yuan and Kang Hai Tan
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| Abstract | ||
| A simple mechanical model is proposed to demonstrate qualitatively the pancake progressive collapse of multi-storey structures. The impact between two collapsed storeys is simulated using a simple algorithm that builds on virtual mass-spring-damper system. To analyze various collapse modes, columns and beams are considered separately. Parametric studies show that the process of progressive collapse involves a large number of complex mechanisms. However, the proposed model provides a simple numerical tool to assess the overall behavior of collapse arising from a few initiating causes. Unique features, such as beam-to-beam connection failure criterion, and beam-to-column connection failure criterion are incorporated into the program. Besides, the criterion of local failure of structural members can also be easily incorporated into the proposed model. | ||
| Key Words | ||
| progressive collapse; impact; virtual spring; virtual damper. | ||
| Address | ||
| Weifeng Yuan: School of Civil and Environmental Engineering, Nanyang Technological University, 639798, Singapore Kang Hai Tan: School of Civil and Environmental Engineering, Nanyang Technological University, 639798, Singapore | ||