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条石砌筑石墙灰缝抗剪性能的研究是了解石结构抗震性能的关键。通过对12片有垫片铺浆砌筑石墙通缝抗剪性能的试验,以研究在剪-压复合作用下砂浆强度和压应力水平对铺浆砌筑石墙灰缝抗剪性能的影响,分析有垫片铺浆砌筑石墙灰缝破坏过程、抗剪强度和变形性能。试验结果表明:有垫片砌筑石墙的灰缝破坏主要包括前期弹性变形阶段和后期的摩擦滑移阶段;提高砂浆强度和压应力水平均能够有效改善灰缝抗剪性能和提高抗剪强度,其中,压应力的影响更为显著。最后,通过数学回归统计,提出剪-压复合作用下有垫片铺浆砌筑石墙灰缝抗剪强度计算公式。计算值与试验结果吻合良好。
The research on the shear resistance of stone joints in stone joints is the key to understand the seismic performance of stone structures. The effects of mortar strength and compressive stress on the shear resistance of grouted masonry walls were studied by testing the shear resistance of 12 grouted masonry walls with shims. , Analysis of mortar plastering masonry wall gray seam failure process, shear strength and deformation properties. The results show that the failure of mortar masonry walls mainly includes the initial stage of elastic deformation and the later stage of friction and slip. Improving mortar strength and compressive stress can effectively improve the shear resistance of mortar joints and improve the shear strength Among them, the impact of compressive stress is more significant. Finally, the formula of shear strength of gray joints in shingle masonry masonry walls with shear-pressure compounding is proposed by mathematical regression statistics. The calculated results agree well with the experimental results.