Modeling of progressive collapse of a multi-storey structure using a spring-mass-damper system

作者：Yuan Weifeng^*; Tan Kang Hai

来源：Structural Engineering and Mechanics, 2011, 37(1): 79-93.

• progressive collapse
• impact
• virtual spring
• virtual damper

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.

• 出版日期2011-1-10
• 单位南阳理工学院