【摘要】 采用具有高强、耐腐蚀、可设计性性强、易成型特性的FRP补强建筑混凝土柱 ,对提高混凝土柱的承载力、韧性及耐久性效果显著 ,且简便易行。本文从FRP的性能出发 ,根据三向受压混凝土柱的特性 ,推算出FRP补强层的理论设计厚度。计算结果表明 ,2 2 1mm厚的GFRP补强层 ,可使直径 40 0mm的C30混凝土圆柱 ,轴向强度由 30MPa提高到 5 0MPa、失效应变提高 18 5倍。更多还原

【Abstract】 ? Characterized by their high strength,corrosion resistance,myriad designs and shapeable,architecture concrete columns reinforced FRP are responsible for improving the load bearing,toughness and duration of concrete columns and show obvious effectiveness and easy control.Based on the behaviors of FRP and three directional stressed concrete columns,the paper deduces the theoretical design thick of the FRP layer.The result presents that if the GFRP layer is 2 21mm thick,the axial strength of the C30 concrete circular column whose diameter is 400 is increased from 30MPa to 50MPa and its critical strain is enhanced more than 18 5 times. 〔更多还原