【摘要】 在对大量文献进行研究对比与分析的基础上,回顾了近三十年来中国在混凝土结构火灾(高温)后损伤评估及修复方面取得的研究成果。由火灾后混凝土结构损伤特点出发,首先阐述了火灾(高温)后混凝土材料热力学性能、试验方法及分析工具等理论基础,然后对火灾后混凝土结构构件力学性能、抗震性能、耐久性等方面研究方法与成果进行归纳,进而总结了我国对混凝土结构火灾后的损伤评估方法的进展。在论述研究进展的同时,对于若干相关研究发展特点和状况进行评述,并从灾害作用机理的研究、损伤机理研究方法、新材料相关研究、损伤评估技术的研究四个方面,对研究的未来发展趋势做出预测与展望。更多还原

【Abstract】 Based on comparative and analytical investigation on the research work conducted in China,the paper reviews the research achievements on the fire damage assessment and rehabilitation of concrete structures during the past 30 years.It starts with the fire-damaged characteristics of concrete structures.Some basic theories on the thermal and mechanical properties of concrete and mechanical behaviors of steel bars after elevated temperature(fire expose) are presented,as well as experimental methods and the analysis ways.Then the research achievements on concrete members and structures after elevated temperature are summarized including mechanical properties,seismic behaviors and durability.Finally,the progress of damage assessment methods after fire is presented.Prospects are put forward on four fields including damage mechanism,damage analysis methods,new materials and evaluation methods.更多还原