Abstract

Buildings in towns and villages suffer heavy damages and losses during earthquakes. In this study, six types tire–granular material composite foundations were fabricated and tested under cyclic reversed loading to investigate the energy absorption and dissipation effects of such composite foundations applied to village buildings. The effects of different axial loads (100, 200 and 300 kPa), tire arrangement and transverse connection between layers on the dynamic performance of the tire–granular material composite foundations were examined. The failure patterns of the composite foundation were obtained. The effects of the aforementioned design parameters on the dynamic performance of the composite foundation, characterised by the hysteresis loops, skeleton curves, stiffness degradation curves and energy dissipation capacity, were analysed. The hysteresis loops were full, indicating good seismic performance. The results demonstrated that using a staggered lap joint arrangement and adding a fibre mesh improved the horizontal bearing capacity and lateral stiffness of the composite foundation and enhance its overall damping capacity. Therefore, adding space connections between tires can improve the energy dissipation capacity of the foundation.

摘要

城镇和村庄的建筑物在地震中遭受严重破坏和损失。在这项研究中，制造了六种轮胎-颗粒材料复合地基，并在循环反向载荷下进行了测试，以研究这种复合地基应用于村庄建筑的吸能和耗能效果。研究了不同轴向载荷（100、200 和 300 kPa）、轮胎排列和层间横向连接对轮胎-颗粒材料复合基础动态性能的影响。获得了复合地基的破坏模式。分析了上述设计参数对复合地基动力性能的影响，包括滞回曲线、骨架曲线、刚度退化曲线和耗能能力。磁滞回线是满的，表明良好的抗震性能。结果表明，采用交错搭接布置和添加纤维网格，提高了复合地基的水平承载能力和侧向刚度，提高了其整体阻尼能力。因此，在轮胎之间增加空间连接可以提高地基的耗能能力。