【摘要】 为了提高加气混凝土填充墙体的抗震能力,通过加气混凝土砌块的力学性能测试和加气混凝土填充墙体在低周反复水平力作用下的开裂试验,分析了加气混凝土砌块的受力破坏特征及框架梁与加气混凝土之间的竖向连接钢筋对加气混凝土填充墙体的抗剪承载能力和变形能力的影响。结果表明:加气混凝土砌块受压时的开裂荷载为破坏荷载的80%左右,砌块开裂后还可以承受一定的压力,延性较好,受弯和受拉时加气混凝土砌块呈现出脆性破坏的特征;在水平荷载作用下,加气混凝土填充墙体与梁采用砂浆连接时,砂浆层受剪破坏,填充墙体沿水平灰缝开裂;墙与梁竖向连接钢筋后,钢筋与砂浆层共同作用,可以明显提高加气混凝土填充墙体的屈服强度和延性,竖向连接钢筋会使加气混凝土受拉开裂。更多还原

【Abstract】 In order to improve the seismic capacity of the aerated concrete infill walls,the mechanical properties of aerated concrete block and low cyclic horizontal force experiment of aerated concrete infill walls were studied.The bearing capacity and deformation ability of aerated concrete filling wall were investigated through the vertical connection of steel bar between the frame beam and aerated concrete block.The results showed that the cracking load of the aerated concrete block is about 80% of its compression failure load,and the aerated concrete block can withstand a certain pressure and ductility after compression cracking.When the aerated concrete block is bended and tensile,its brittle fracture characteristic is showed.When aerated concrete infill walls and beams are connected by mortar,the mortar layer is failure by shear,filling the wall cracking along the horizontal mortar joint.When the filling walls and beams are connected with the vertical steel bar,the yield strength and ductility of the filling walls are obviously improved owing to steel bar and mortar,thus the aerated concrete is cracked by the bar pulling.更多还原