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为研究轻钢构架钢骨混凝土剪力墙的破坏形态、滞回特性、承载能力及变形能力等抗震性能,完成了8个剪跨比为2.25试件的拟静力试验。结果表明:试件的破坏形态为压弯破坏,轴压比高的试件墙底混凝土破坏的程度比轴压比低的试件严重;顶点水平力-位移滞回曲线比较饱满,具有较长的峰值承载力稳定段;轴力作用下的受弯承载力试验值大于计算值;极限位移角大于1/100,变形能力随轴压比的增大而减小,边缘构件配箍特征值大的高轴压比墙,同样具有大的变形能力。轻钢构架钢骨混凝土剪力墙的受弯承载力可按钢筋混凝土剪力墙计算,钢骨用等面积钢筋代替,并可考虑轻钢构架C形钢和竖向钢筋的作用。
In order to study the seismic behavior of SRC shear wall such as failure mode, hysteretic characteristics, bearing capacity and deformation capacity, the quasi-static tests of eight specimens with shear-span ratio of 2.25 were completed. The results show that the failure mode of the specimen is bending failure, and the failure of concrete with high axial compression ratio is more serious than the specimen with low axial compression ratio. The horizontal force-displacement hysteresis curve of the specimen is full, The test value of flexural capacity under axial load is larger than the calculated one. The limit displacement angle is more than 1/100, the deformation capacity decreases with the increase of axial compression ratio, The high axial pressure ratio wall, also has a large deformation capacity. The flexural capacity of steel reinforced concrete shear walls can be calculated according to reinforced concrete shear walls. The steel billets are replaced by equal-area steel bars, and the function of C-shaped steel and vertical steel bars can be considered.