摘要
钢筋与混凝土的高温粘结性能是确定结构构件高温下极限承载力、高温后残余承载力以及构件修复加固设计的基础。通过设计钢筋中心拔出试验,研究了经历不同温度后钢筋和混凝土粘结性能的变异,分析和讨论了钢筋直径、锚固长度、温度等因素对混凝土与钢筋粘结性能的影响。得到的相关结论对结构构件抗火设计和火灾后的加固研究具有一定的指导意义。
An understanding of bonding performance between steel bar and concrete is the prerequisite for research of concrete's ultimate bearing capacity under high temperature,residual bearing capacity after high temperature and the structural member's repair and strengthening. In this paper,by way of a central pull-out test,the bond performance between bars and concrete after exposed to different high temperature were tested and investigated. Based on the measured bond stress after exposed to different high temperature,the influence of bar diameter,bond length,temperature etc. to bond behavior is analyzed and discussed. The corresponding conclusions have significance for structural member's fireresistance design and strengthening after fire.
出处
《建筑结构》
CSCD
北大核心
2013年第S1期1475-1478,共4页
Building Structure
关键词
高温
混凝土
钢筋
粘结性能
high temperature
concrete
reinforce bar
bond performance
