摘要
为研究轻钢与聚苯颗粒(EPS)混凝土界面黏结滑移的作用机理,制作了20个轻钢EPS混凝土短柱试件进行拉拔试验,研究EPS混凝土强度、钢管埋置长度及保护层厚度对轻钢与EPS混凝土黏结性能的影响.结果表明:轻钢与EPS混凝土的黏结应力要比钢筋与普通混凝土的黏结应力小;峰值黏结应力随EPS混凝土强度和保护层厚度的增加有所提高;钢管埋置长度的变化对峰值黏结应力的影响不明显.基于试验结果,提出了轻钢与EPS混凝土的三段式黏结-滑移本构模型,计算值与试验值基本吻合.
According to the pull-out tests of 20 specimens,the bond-slip mechanism between light gauge steel and expanded polystyrene（EPS）concrete was investigated.The effects of cover thickness,concrete strength and bonded length were studied.Results show that compared with normal reinforced concrete,bond strength between light gauge steel and EPS concrete is lower.Ultimate bond strength is improved with the increase of cover thickness and concrete strength,while bonded length shows little effect on the bond strength.Based on the test results,a three-stage bond-slip model is proposed to represent the bond behavior of light gauge steel in EPS concrete,which agrees well with the test results.
出处
《建筑材料学报》
EI
CAS
CSCD
北大核心
2016年第3期578-583,共6页
Journal of Building Materials
基金
国家发改委建筑行业低碳技术创新及产业化示范工程项目(2013-1819)
