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为研究条石砌体的轴心受压性能,进行了27个条石砌体试件的轴心受压试验。主要研究参数包括砂浆强度、砌体高厚比和砌筑方式(干砌甩浆和铺浆)等。通过试验分析了条石砌体在轴压力作用下的破坏特征和荷载-变形关系,研究了不同参数对条石砌体轴心受压承载力的影响。试验过程揭示条石砌体在轴压荷载作用下的破坏形态表现为水平灰缝受压破坏和条石砌块竖向折断,呈现脆性破坏特征。研究结果表明:当砌体高厚比不超过5.75时,在灰缝中配置更多垫片可提高干砌甩浆条石砌体的承载力;铺浆砌筑条石砌体的轴压刚度和承载力均高于干砌甩浆条石砌体。基于对试验结果的回归分析,提出了考虑砌体高厚比影响的干砌甩浆砌筑条石砌体轴压承载力的计算式,计算结果与试验结果吻合较好。
In order to study the axial compressive properties of masonry masonry, 27 axial masonry specimens were tested for axial compression. The main research parameters include mortar strength, masonry height-to-thickness ratio and masonry mode (dry masonry slurries and paving). Through the test, the failure characteristics and the load-deformation relations of the stone masonry under axial pressure were analyzed. The influence of different parameters on the axial bearing capacity of the masonry masonry was studied. The experimental process revealed that the failure morphology of the stoned masonry under axial compressive load was manifested as the horizontal collapse of the mortar and the vertical fracture of the stoned masonry, which showed the characteristics of brittle failure. The results show that when the height-to-thickness ratio of masonry is less than 5.75, more shims can be arranged in the mortar joints to increase the bearing capacity of dry masonry slab. The axial compressive rigidity And the bearing capacity are higher than the dry mud slime masonry. Based on the regression analysis of the test results, the calculation formula of axial compressive bearing capacity of dry masonry masonry masonry masonry with masonry height-to-thickness ratio is proposed. The calculated results are in good agreement with the experimental results.