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针对村镇建筑震害中常见的砖墙平面外破坏或倒塌现象,采用气囊加载的方式,对6片足尺带翼缘砖墙进行平面外低周反复加载试验,研究了墙体的破坏特征、极限强度和位移、刚度变化和耗能能力,并考虑了墙宽、竖向荷载和加固措施等因素的影响。结果表明,带翼缘墙体的破坏形态与三边约束的混凝土板的破坏形态相似,开裂后仍能维持很大的侧向位移而不发生倒塌;竖向荷载可明显提高墙体的初始刚度和开裂强度;墙宽增大会使得墙体开裂强度和耗能能力下降,拐角采用混凝土预制板加固后,墙体耗能能力有所提高,中间增加混凝土构造柱后,墙体耗能能力进一步提高。
Aiming at the common out-of-plane damage or collapse of brick wall in the earthquake damage of village and town buildings, 6 full-scale flanged brick walls were subjected to low-cycle repeated loading test by air bag loading, and the failure characteristics of the wall were studied. Strength and displacement, stiffness variation and energy dissipation capacity, taking into account factors such as wall width, vertical load and reinforcement measures. The results show that the failure mode of the flanged wall body is similar to that of the concrete slab restrained by the three sides, which can maintain a great lateral displacement without collapse after cracking. The vertical load can obviously increase the initial stiffness of the wall And cracking strength; wall width will make the wall cracking strength and energy consumption decreased, corner reinforced concrete prefabricated panels, wall energy consumption increased, the middle of the concrete structure column, the wall to further improve the energy consumption capacity .