冷轧带翼钢筋剪力墙结构抗震性能试验研究

冷轧带翼钢筋（CDB-W）是一种新型的冷轧变形钢筋,该钢筋是以普通低碳热轧钢筋（高线圆盘或棒条）为母材经专门的生产工艺加工而成。冷轧带翼钢筋具有强度高、粘结握裹力强、施工方便等优点,在建筑工程中得到愈来愈广泛的应用。制作了冷轧带翼钢筋混凝土剪力墙结构1/2缩尺模型进行了地震模拟振动台试验,分析了模型的破坏现象,研究了在不同的地震波形和不同的地震烈度下,试验模型的自振频率变化及加速度、位移和应变反应,检验了模型的抗震能力。在试验的基础上进行了相关的理论研究。利用有限元软件ANSYS建立了冷轧带翼钢筋剪力墙模型,进行了相应的结构非线性时程分析。计算结果与实测符合较好。

Experimental Study on the Seismic Behavior of Concrete Shear Wall with Cold-rolled Wing-deformed Bars

Cold-rolled wing-deformed bar（CDB-W）, which is made of ordinary low-carbon hot-rolled steel bar by special production technology, is a kind of new-type cold-rolled deformed bar. This kind of bar has advantages of high tensile strength, and good capacity to bond with concrete, so it is widely applied in the constructional engineering. A 1/2-scale model of a building built with concrete shear wall and cold-rolled wing-deformed bars has been made and tested on the shaking table. The seismic performance of this model has been recorded and investigated in terms of the failure mechanism, crack development, natural frequency, damping ratios, floor accelerations,floor shifts, strain response and the cracking of the walls. Moreover, results of the experimental tests are further studied theoretically and the model of shear wall with cold-rolled wing-deformed is set up by using finite element software ANSYS. Nonlinear time history analysis is made and comparative analysis are carried out between the simulation and experiment results. The simulation results are in good agreement with the experiment results.