钢板-混凝土组合剪力墙受剪性能试验研究

通过11片高宽比为1.5、轴压比为0.5的钢板-混凝土组合剪力墙抗震性能试验研究,对比了不同连接形式钢板-混凝土组合墙受剪破坏形态、极限承载力及延性性能。试验表明,钢板-混凝土组合墙中型钢、钢板与混凝土可很好地协同工作,而且四周焊接的钢板-混凝土组合墙可大幅度提高受剪承载力,而延性与普通配筋墙相当或略高;采用连接板与周边型钢连接的钢板-混凝土组合墙,其承载力提高幅度取决于连接板的强度,延性性能较好。基于承载力叠加原理提出的钢板-混凝土组合剪力墙受剪承载力设计计算公式与试验结果吻合较好,并具有适当的安全度,同时还提出了钢板-混凝土组合剪力墙受剪截面控制条件的建议公式。

Experimental study on shear behavior of steel plate-concrete composite wall

By quasi-static test of 11 steel plate-concrete wall specimens with different types of connection,the shear properties are studied for the shear failure mode,bearing capacity and hysteretic behavior.The height to width ratio for the specimens is 1.5,and the axial compression ratio is 0.5.The test results show that embedded steel shapes and steel plate can work together with the reinforced concrete.The steel plate-concrete composite shear walls with four edges welded have much higher strength,and their ductility is almost equal to or slightly higher than that of reinforced concrete wall.The shear strength of the composite wall using connecting plate depends on the connecting strength,and the ductility of these types of walls is better.Based on the superposition principle, the calculation formula of the steel plate-concrete composite wall shear strength is suggested,from which the calculated results are quite consistent with the experimental data,and has adequate safety degree as well.The shear force limitation for steel plate-concrete composite wall section is also suggested.