Numerical Simulation of Progressive Collapse for a Reinforced Concrete Building

Though nonlinear dynamic analysis using a specialized hydro-code such as AUTODYN is accurate and useful tool for progressive collapse assessment of a multi-story building subjected to blast load, it takes too much time to be applied to a practical simulation of progressive collapse of a tall building. In this paper, blast analysis of a RC frame structure using a simplified model with Reinforcement Contact technique provided in Ansys Workbench was introduced and investigated on its accuracy. Even though the simplified model has a fraction of elements of the detailed model, the simplified model with this modeling technique shows similar structural behavior under the blast load to the detailed model. The proposed modeling method can be effectively applied to blast loading progressive collapse analysis of a RC frame structure.

Authors:

• Han-Soo Kim
• Jae-Gyun Ahn
• Hyo-Seung Ahn

Keywords:

• Autodyn
• Blast Load
• Progressive Collapse
• Reinforcement Contact.

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