约束状况对混凝土结构抗火性能影响的数值分析  

Numerical Analysis of Effect of Constraint Condition on the Fire Resistance of Concrete Structures

作　　者：李荣涛[1] 

机构地区：[1]大连大学建筑工程学院,大连116622

出　　处：《科学技术与工程》2016年第11期75-78,共4页Science Technology and Engineering

基　　金：国家自然科学基金(11302034);辽宁省教育厅基金(L2011215)资助

摘　　要：利用数值模拟手段探讨了混凝土构件的约束状况对其抗火性能的影响,这些影响包括对温度场、饱和度、蒸汽压力、损伤、应力等。较全面地阐释了材料内部在火灾中发生的现象及其原因,为混凝土结构防减灾设计研究提供更多的借鉴。A numerical analysis of the effect of constraint condition on the fire resistance of concrete structures is done. The relevant effects include temperature field,saturation,vapor pressure,mechanical damage and thermal stress of structure etc. In particular,the thermo-hygro-mechanical detailed behavior of concrete and its reasons were explaned that cannot be obtained from laboratory experiments,which will provide important reference for the fire resistance design of concrete structures.

关 键 词：数值分析 约束条件 混凝土结构 火灾 

分 类 号：TU528[建筑科学—建筑技术科学] O343.6[理学—固体力学]