型钢混凝土T形截面剪力墙抗震性能试验研究

为研究型钢混凝土T形截面剪力墙的抗震性能，对3个剪跨比为2.2的T形截面剪力墙进行了拟静力试验。通过改变试件的轴压比，研究其在水平往复荷载作用下的破坏机理、滞回性能、延性以及耗能能力等。试验结果表明：T形截面剪力墙的破坏形态为无翼墙腹板端约束边缘构件底部混凝土被压碎的受弯破坏；剪力墙的滞回曲线饱满，没有明显的捏缩现象，具有良好的耗能能力；位移延性系数在2.3~4.1之间，且随轴压比的增加，剪力墙变形能力降低；在水平正负向加载时T形剪力墙刚度、承载力及延性呈非对称，翼缘受拉相对翼缘受压时承载力高，刚度大，延性小，需合理设计腹板无翼缘侧约束边缘构件，防止其受压时提早破坏。

Experimental study on seismic behavior of SRC T-shaped shear wall

The seismic behavior of steel reinforced concrete (SRC) T-shaped structural walls was studied and the results of quasi-static cyclic tests on three SRC T-shaped walls with an aspect ratio of 2.2 were presented. The failure mechanism, hysteretic behavior, ductility and energy dissipating capacity were investigated under various axial load ratios. The experimental results show the crushing of the concrete at the base of the boundary on the side without flange leads to the flexural failure of T-shaped shear walls. The experimental results also exhibit good hysteretic characteristics without pinching phenomena and good energy dissipating capacities. The ductility coefficient varies from 2.3 to 4.1 and the deformability decreases with the increase of axial load ratios. The stiffness, strength and ductility of T-shaped walls are unsymmetrical under positive and negative loading. The stiffness and strength are higher and the ductility is lower when the flange is in tension. Special attention should be paid to the design of the web boundary side without flange to avoid early failure of the web boundary under compression.