厚型防火涂料保护下CFRP梁耐火设计  

FIRE DESIGN OF CFRP STRENGTHENED RC BEAMS WITH THICK TYPE FIRE COATINGS

作　　者：胡克旭[1] 赵传鑫[1] 胡亚敏[1] 

机构地区：[1]同济大学结构工程与防灾研究所,上海200092

出　　处：《低温建筑技术》2010年第12期36-38,共3页Low Temperature Architecture Technology

摘　　要：文中以当前国内外研究成果为基础,用ANSYS对加固构件进行了高温下的传热分析和力学分析,在计算机上再现了防火试验的全过程。研究了荷载比、CFRP加固量、防火材料厚度以及混凝土保护层厚度等因素对采用厚型防火涂料的CFRP加固梁耐火极限的影响规律,并得到了不同工况下的CFRP加固钢筋混凝土梁的耐火极限,为CFRP加固混凝土梁的防火设计提供了依据。Based on the latest researches at home and abroad, and by mean of ANSYS software, thermal and mechanical analysis are carried out by numerical analysis in this paper, and the whole fire procedure is repeated on computer. And in this way, more analysis on different conditions, such as on different load ratios,strengthening ratios, fire insulation thicknesses and thicknesses of concrete protective layer, etc. are conducted. After obtaining these data,fire resistances of CFRP strengthened RC beams with thick type fire coatings are put forward, which is helpful to the fire design of structure repairing.

关 键 词：CFRP加固 钢筋混凝土梁 防火保护 耐火极限 

分 类 号：TU528.572[建筑科学—建筑技术科学]