钢板夹芯混凝土组合剪力墙复合受力性能试验研究

通过两组钢板夹芯混凝土组合剪力墙的拟静力试验,对双向压弯荷载作用下钢板混凝土组合剪力墙的承载能力、变形能力和破坏模式进行研究,获得了试件的典型破坏形态、滞回曲线、骨架曲线、延性系数以及耗能能力等,分析面外弯矩的变化对结构力学性能的影响。研究表明:在双向压弯作用下,试件的破坏形态主要是压弯破坏;试件滞回曲线不够饱满,耗能能力一般;面外弯矩越大,试件的抗侧承载力及耗能性能越差;试件进入塑性阶段后,面外位移显著增加,呈发散趋势;试件底部截面基本满足平截面假定。

EXPERIMENTAL STUDY OF MECHANICAL BEHAVIOR STEEL-CONCRETE SANDWICH COMPOSITE SHEAR WALLS UNDER COMPOSITE LOADING

By quasi-static testing two sets of specimens of steel-concrete sandwich composite shear wall,including tests of the bearing capacity,deformability,failure mode of the specimens,valuable results were obtained from the tests,such as the typical failure modes,the hysteretic curves,skeleton curves,bearing capacity,ductility,energy dissipation capacity. In addition,it was also analyzed the influence of variations of out-of-plane bending moment on structural mechanical behavior. In conclusion,the failure patterns of specimens under compression and biaxial bending moment were compression-bending failure; and the hysteretic curves of all specimens were not plump,validating that the deformability and energy dissipation capacity of the specimens were general. In other words,the bigger the out-of-plane bending moment,the less the lateral resistance capacity and energy dissipation capacity of the specimens. The specimens' out-of-plane displacement in the plastic region increased significantly,and they had a divergent trend. The bottom section of the specimens could basically meet the plane section assumption.