纤维织物增强高延性混凝土加固RC梁的受弯性能

张敏,邓明科,智奥龙,宋诗飞,陈晖

Flexural behavior of RC beams strengthened by textile-reinforced highly ductile concrete

Min ZHANG,Ming-ke DENG,Ao-long ZHI,Shi-fei SONG,Hui CHEN

表 5 梁试件受弯试验的主要结果

Tab.5 Major results of flexural tests of beam specimens

试件编号 开裂点 纵筋屈服点 峰值点 极限点 $\dfrac{ { {P_{\text{m} } } }}{ { {P_{ {\text{m,0} } } } } }$ $ \mu $ 破坏形态 $ {P_{{\text{cr}}}} $/ kN Δcr/ mm $ {P_{\text{y}}} $/ kN Δy/ mm $ {P_{\text{m}}} $/ kN Δm/ mm $ {P_{\text{u}}} $/ kN Δu/ mm B1 17.15 1.13 73.14 6.11 96.15 41.40 81.73 41.98 — 6.87 A B2 37.74 1.79 96.57 5.74 109.72 12.17 93.26 38.41 1.141 6.69 B B3 37.83 1.70 111.38 7.22 118.79 11.60 100.97 39.80 1.235 5.51 B B4 36.05 1.54 121.31 7.29 133.87 11.46 113.79 12.73 1.392 1.75 B B5 18.75 0.94 145.64 7.77 164.10 31.39 139.49 36.29 — 4.67 A B6 40.61 1.37 160.89 7.80 175.52 13.48 149.19 33.00 1.070 4.23 B B7 43.97 1.37 174.82 8.62 183.64 13.26 156.09 25.64 1.119 2.97 C B8 48.97 1.67 177.94 8.67 194.30 12.64 165.16 20.47 1.184 2.36 C B9 — — 160.92 7.32 187.66 14.13 159.51 23.36 1.143 3.19 C B10 — — 147.14 6.79 193.72 16.09 164.66 19.41 1.180 2.86 C