钢-混凝土组合结构抗火设计原理研究  

FIRE RESISTANCE DESIGN OF STEEL-CONCRETE COMPOSITE STRUCTURES

作　　者：韩林海[1] 宋天诣[1] 谭清华[1] 

机构地区：[1]清华大学土木工程系,北京100084

出　　处：《工程力学》2011年第A02期54-66,共13页Engineering Mechanics

基　　金：国家自然科学基金项目(50738005);国家科技支撑计划子课题项目(2008BAJ08B014-07)

摘　　要：该文论述了作者近年来在钢-混凝土组合结构抗火设计原理方面进行的研究工作,具体包括:1)钢管混凝土(CFST)和型钢混凝土(SRC)构件、组合节点和组合框架结构的耐火性能;2)经历常温加载、升温、降温阶段持荷和火灾后加载这一连续过程作用的组合结构构件、CFST柱-钢梁节点和SRC柱-SRC梁节点的力学性能。作者建立了力和火灾共同作用下组合构件、节点和框架结构的数值分析模型,并通过试验对数值模型进行了验证,在此基础上深入研究了力和火灾共同作用下组合结构的工作机理、抗火设计原理和方法。该文简要论述已取得的研究成果。In recent years, the authors have been engaged in the research for the fire performance of composite structures, which includes： （1） the fire performance of concrete filled steel tubular （CFST） and steel reinforced concrete （SRC） members, steel-concrete composite joints and frames; （2） the mechanical performance of steel-concrete composite members, CFST column to steel beam joints and SRC column to SRC beam joints subjected to a loading sequence including initial loading, heating, cooling and postfire loading. Numerical analysis models were established, and after being verified by the experimental results, they were used to analyze the mechanical characteristics of the composite members, joints and frames under the combinations of loads and fire. Based on the numerical analysis models, the fire performance and fire resistance design of composite structures under the combined actions of loads and fire were studied deeply. This paper generally sumarised the research outcomes.

关 键 词：组合结构 耐火性能 耐火极限 火灾 全过程分析 

分 类 号：TU398.9[建筑科学—结构工程]