不同暗支撑型式的带暗支撑双肢剪力墙抗震性能试验研究

AN EXPERIMENTAL STUDY ON THE SEISMIC BEHAVIOR OF RC COUPLED SHEAR WALLS WITH CONCEALED BRACINGS OF DIFFERENT STYLES

在已有钢筋混凝土带暗支撑双肢剪力墙研究的基础上,设计了3个不同暗支撑配筋型式的四层双肢剪力墙和1个普通四层双肢剪力墙1/4缩尺模型,并进行了在低周反复荷载作用下与普通双肢剪力墙的对比试验研究。较系统地分析了结构的承载力、延性、耗能、用钢量和破坏特征等。还建立了带暗支撑双肢剪力墙的力学模型、承载力计算公式,计算结果与实测值符合较好。

Three four- story 1/4 scale models of RC coupled shear walls with concealed bracings of different forms and one four - story 1/4 scale general RC coupled shear wall model were designed. Comparative experimental studies on the normal RC coupled shear wall under low cyclic loading were conducted. The structural bearing capacities, ductility, energy dissipation, amount of steel and failure feature are analyzed systematically. The mechanical model and the calculation formulas of the bearing capacity for RC coupled shear walls with concealed bracings are also established. The calculation results of bearing capacity of the specimens agree well with the measured ones.