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为研究填充块材和外围构件对钢筋混凝土框格单元结构受力性能的影响,对4个框格单元和2个空框格结构进行1/2比例模型加载试验。结果表明,开裂前填充砌体与钢筋混凝土框格粘着为一体共同抵抗外力,开裂后结构转化为砌体压杆抗力机制。外围构件弯曲刚度对结构抗裂能力及极限承载能力均有显著影响。提高填充块材抗压强度时结构极限承载能力显著提高。当填充块材抗压强度及弹性模量较低时,钢筋混凝土框格单元结构的变形能力很好。
In order to study the influence of filled blocks and peripheral members on the mechanical performance of reinforced concrete scrim unit structure, a half-scale model loading test was carried out on 4 sashed cells and 2 empty sashed structures. The results show that, before cracking, the filled masonry and the reinforced concrete frame are adhered together to resist the external force. After cracking, the structure is transformed into the resistance mechanism of the masonry bar. The flexural rigidity of the surrounding members has a significant effect on the crack resistance and the ultimate bearing capacity of the structure. When the compressive strength of filled block is increased, the ultimate bearing capacity of the structure increases significantly. When the compressive strength and elastic modulus of filled block are lower, the deformation capacity of reinforced concrete sash cell structure is very good.