A novel modeling method for fiber-based progressive collapse analysis of composite frames. (October 2022)

• Record Type: Journal Article
• Authors: Zheng, Yu-hui; Zhong, Wei-hui; Tan, Zheng; Meng, Bao; Duan, Shi-chao
• Is Part Of: Engineering failure analysis. Volume 140(2022)
• Publication Date: 2022-10
• Subjects: Progressive collapse -- Composite frame -- Fiber-based model -- Component-based method -- Numerical analysis; System failures (Engineering) -- Periodicals; Fracture mechanics -- Periodicals; Reliability (Engineering) -- Periodicals; Pannes -- Périodiques; Rupture, Mécanique de la -- Périodiques; Fiabilité -- Périodiques; Fracture mechanics; Reliability (Engineering); System failures (Engineering); Periodicals; Electronic journals; 620.112
• DOI: 10.1016/j.engfailanal.2022.106519
• Languages: English
• ISSNs: 1350-6307

Abstract

Highlights: An Efficient numerical method for fiber-based progressive collapse analysis of composite frames was provided. The component-based method was employed to simplify beam-to-connection in OPENSEES. Composite relationship between beam and slab and damage evolution of materials were considered. Parameter analysis using fiber-based models. Abstract: To fully take into account the computational efficiency and accuracy of the numerical model for anti-collapse analysis. In this paper, a fiber-based model composed of zero-length elements and nonlinear beam-column elements was established considering the composite relationship between the beam and slab and the damage evolution of the material. The beam-to-column connection was reasonably simplified by employing a component-based method, and an efficient numerical method was developed based on OpenSees. A comparison with experimental data indicated that the fiber-based model accurately reflected the nonlinear mechanical behavior of the composite beam-column assemblies, and showed excellent computational efficiency. Because the component-based models of different beam-to-column connections have been proposed and further improved, the proposed modeling method can be conveniently applied to the anti-collapse analysis of composite frames with different connections. In addition, some design suggestions obtained through a parameter analysis were given to prevent the development of a chain reaction.