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通过3片墙体的抗压试验和10片墙体的水平低周反复荷载试验,研究了低强度空斗墙的抗压和抗震性能。在水平低周反复荷载试验中,比较了不同砂浆强度和砌筑方式的空斗墙的破坏形态、承载能力、变形能力、滞回特性、耗能能力等。试验结果表明,不同砌筑方式空斗墙的抗压承载力差异不大;低强度空斗墙抗震试验结果的随机性和离散性很大;低强度空斗墙的抗震性能明显差于相同条件的实心墙;砂浆强度和砌筑方式对空斗墙的抗震性能均有一定影响。采用已有的经验公式对空斗墙的抗压和抗剪承载力进行了计算,计算与试验结果基本吻合。
The compressive strength and anti-seismic performance of low-strength air-wall are studied by compressing test of three walls and horizontal low-cycle repeated loading test of ten walls. In the horizontal low cycle repeated loading test, the failure modes, bearing capacity, deformation capacity, hysteresis characteristics and energy dissipation capacity of the mortar wall with different mortar strength and masonry are compared. The test results show that the compressive capacity of different types of masonry walls is not different; the randomness and dispersion of the low-strength masonry walls are large; the seismic performance of the low-strength walls is obviously worse than that of the same conditions Of the solid wall; mortar strength and masonry methods on the seismic performance of the wall have a certain impact. The compressive strength and shear capacity of the wall are calculated by using the existing empirical formula. The calculation and test results are in good agreement.