摘要
为了解玄武岩纤维复合材料(BFRP)在整体结构中的加固效果和作用,对一个已经丧失承载能力的一板八柱整体板柱结构模型中的协调受扭边梁和偏压薄壁柱进行了加固,通过对加固后的整体结构试件进行十六点竖向静力加载试验,研究分析了被加固构件的受力性能。结果表明:BFRP较好地发挥了作用,边梁的旧扭转裂缝受到显著的约束,新扭转裂缝出现时间大大延迟,构件的刚度不仅得到了恢复且还有明显的提高;由于BFRP与构件的共同工作情况良好,未发生剥离现象,分担了钢筋的受力,故加固构件还具有较大的承载潜力。
To research the effect and action of the basalt continuous fiber reinforced polymer （BFRP） strengthening in the integral structure, the compatibility torsional spandrel beams and eccentricity compression thin-walled columns of the unbonded prestressed slab-column structure model with 1 slab and 8 column which has destroyed are strengthened with BFRP, through the 16-point vertical static load test of the strengthened monolithic structure specimen, the bearing performance of the strengthened members is studied and analyzed. The results show： BFRP play a better role, the old torsional cracks of spandrel beams are observably restricted, and the new cracks are enormously delayed the appearance time. The rigidity of the strengthened members is not only better recovered but also enhanced. Because of the good compatibility of BFRP and the member, BFRP have no peeling off and share in the force of reinforcing steel bars, strengthening members still have a great bearing capacity.
出处
《工程力学》
EI
CSCD
北大核心
2009年第6期133-140,171,共9页
Engineering Mechanics
基金
国家十五家科技攻关项目子课题项目(2002BA806B-4)
关键词
结构加固
受力性能
静力试验
玄武岩纤维复合材料
受扭边梁
偏压薄壁柱
strengthening structure
mechanical behaviors
static tests
basalt continuous fiber reinforced polymer
torsional spandrel beam
eccentricity compression thin-walled column
