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通过逆向加载的方式对混凝土多孔砖砌体的应力—应变曲线进行试验。分析了混凝土多孔砖强度、砂浆强度对砌体的应力—应变曲线各特征点应力、应变的影响。结果表明,混凝土多孔砖强度对峰值应力的影响高于砂浆强度;弹性阶段的变形主要是受压时砂浆的变形;残余变形阶段破碎砌体间的胶合和摩擦力主要依靠的是砂浆。
The stress-strain curve of concrete perforated brick masonry was tested by means of reverse loading. The influence of the strength of concrete perforated brick and mortar strength on the stress and strain of each characteristic point of the stress-strain curve of masonry was analyzed. The results show that the strength of concrete perforated brick has more influence on the peak stress than the mortar strength. The deformation in the elastic phase is mainly the deformation of the mortar under compression. The gluing and friction between the crushed masonry in the residual deformation stage depend mainly on the mortar.