Structural collapse progression: performance and design of frame structures under extreme loads
Source abstract
Abstract
Abstract Focusing on the resistance of frame structures to progressive collapse under extreme loads, this paper systematically reviews the research progress and key technologies. Analysis of typical disaster cases identifies the common characteristics of progressive collapse in frame structures, including the initial damage triggered by the failure of key components (columns, joints) and the chain collapse caused by insufficient redundancy and the interruption of load transfer paths. The mechanical response and collapse mechanisms under extreme loads are reviewed, categorizing research achievements into two dimensions: single-hazard effects and multi-disaster coupling effects, clarifying the applicable boundaries and synergistic mechanisms of strategies to enhance structural robustness. Research indicates that the collapse mechanism under extreme loads exhibits dynamic nonlinear characteristics, and the traditional static assumption method shows significant deviations. To enhance collapse resistance, a multi-layered protection strategy integrating redundant design, intelligent monitoring, and high-ductility materials is essential. However, current research faces core limitations such as the lack of a quantitative model for the synergistic damage effects of multi-hazard coupling and the discontinuity in multi-scale validation of joint force-transfer mechanisms across the material-component-system hierarchy. These limitations directly constrain the reliability of high-fidelity numerical simulation tools and hinder the development of performance-based design codes for progressive collapse resistance. In the future, there is an urgent need to integrate intelligent algorithm-driven analytical models with performance-based design paradigms to advance technologies for precise multi-hazard simulation and proactive collapse resistance. To this end, this paper proposes a resilience enhancement pathway centered on “perception-regulation-recovery,” thereby supporting the upgrade of urban disaster prevention systems and the innovation of engineering protection standards.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Structural Response to Dynamic Loads · Fire effects on concrete materials · Seismic Performance and Analysis
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
College of Information, Mechanical and Electrical Engineering , Yangtze University College of Arts and Sciences , Jingzhou , 434020 , China
Key Laboratory of Urban Security and Disaster Engineering of Ministry of Education, Beijing University of Technology , Beijing , 100124 , China
College of Civil Engineering , Fuzhou University , Fuzhou , 350116 , China
China Railway 18th Bureau Group No. 4 Engineering Co., Ltd. , Tianjin , 300350 , China
International and Hong Kong, Macao and Taiwan Joint Laboratory of Structural Engineering , Fuzhou University , Fuzhou , 350108 , China
Department of Mechanical Engineering , University of New Orleans , New Orleans , LA , 70148 , USA
Fujian Xing Yuan Const. Projects & Dev. Co., Ltd , Fuzhou , 350000 , China
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