The critical influencing factors of the interface bonding properties of concrete-filled steel tubes (CFSTs) under fire and postfire conditions are analyzed. This paper analyzes and summarizes the existing research related to the bonding performance of CFST interfaces under fire and postfire conditions at home and abroad, which includes the bonding mechanism of CFST structures, the bonding strength of CFSTs during and after fire exposure, and the main factors influencing bond strength. The analysis results indicate that the temperature has noticeable influences on the bond strength of a CFST during and after fire exposure. The bond strengths of the specimens are reduced more severely under high-temperature conditions than after high-temperature cooling. Shear connectors can significantly improve the bonding performance of CFSTs and effectively reduce the relative slip between steel tubes and concrete. The paper concludes with an analysis of the deficiencies in bond-slip research on the bonding properties of the CFST interface during and after fire exposure and future research directions. First, we can study the use of new technologies and materials to solve the problem of bonding and slipping of CFSTs during and after fire exposure. Second, we can perform extensive experimental research and theoretical simulation analysis to enrich the research in this field, which can provide a reference for engineering practice.

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火灾和火灾后条件下混凝土填充钢管的界面结合性能：最新评论

分析了火灾和火灾后钢管混凝土(CFSTs)界面粘结性能的关键影响因素。本文对国内外有关CFST界面在火灾和火灾后条件下结合性能的现有研究进行了分析和总结，其中包括CFST结构的结合机理、火灾中和火灾后CFSTs的结合强度以及主要影响因素。影响粘结强度。分析结果表明，在火灾暴露期间和之后，温度对 CFST 的结合强度有显着影响。与高温冷却后相比，高温条件下试样的结合强度降低得更严重。抗剪连接件可以显着提高CFST的粘结性能，有效降低钢管与混凝土之间的相对滑移。文章最后分析了CFST界面在火灾暴露期间和之后的结合性能的结合滑移研究的不足和未来的研究方向。首先，我们可以研究使用新技术和新材料来解决CFSTs在火灾期间和之后的粘合和滑移问题。其次，可以进行广泛的实验研究和理论模拟分析，丰富该领域的研究，为工程实践提供参考。文章最后分析了CFST界面在火灾暴露期间和之后的结合性能的结合滑移研究的不足和未来的研究方向。首先，我们可以研究使用新技术和新材料来解决CFSTs在火灾期间和之后的粘合和滑移问题。其次，可以进行广泛的实验研究和理论模拟分析，丰富该领域的研究，为工程实践提供参考。文章最后分析了CFST界面在火灾暴露期间和之后的结合性能的结合滑移研究的不足和未来的研究方向。首先，我们可以研究使用新技术和新材料来解决CFSTs在火灾期间和之后的粘合和滑移问题。其次，可以进行广泛的实验研究和理论模拟分析，丰富该领域的研究，为工程实践提供参考。