防灾减灾工程学报2012，Vol.32Issue(1)：50-55,6.
GFRP筋混凝土梁耐火性能的试验研究
Fire Performance of GFRP Reinforced Concrete Beams
摘要
Abstract
The fire performances of concrete beams reinforced with GFRP rebar are present in this paper, and four simply supported beams are exposed to fire with ISO 834 standard heating curve. The design of these flexural beams is according to ACI 440. 1R-06. The influences of different loading rates, concrete covers and anchorage modes are taken into account. Fire test results indicate that the crack depth of GFRP reinforced beams is deeper than steel reinforced beams, and more slight cracks even accompanied with concrete splitting appear at the bottom of beam due to GFRP rebar' s larger transverse expansion. It is recommended that the application of J-hooks anchorage in the crowed end should be reduced if there is sufficient bond strength. Although the mechanical behavior of GFRP reinforced concrete beam degradation significant at elevate temperature, proper design of GFRP reinforced concrete members by limiting the minimum concrete cover and service load will meet the practical fire design requirements.关键词
GFRP筋/混凝土梁/耐火性能试验Key words
GFRP rebar/ concrete beam/ fire performance test分类
建筑与水利引用本文复制引用
查晓雄,王晓璐,谢先义..GFRP筋混凝土梁耐火性能的试验研究[J].防灾减灾工程学报,2012,32(1):50-55,6.基金项目
亚热带建筑科学国家重点实验室开放基金项目(2009KB20)、英国皇家协会国际合作项目(2007/R1-IJP)资助 （2009KB20）
