A series of dynamic model tests that were performed on a geogrid-reinforced square footing are presented. The dynamic (sinusoidal) loading was applied using a mechanical testing and simulation (MTS) electro-hydraulic servo loading system. In all the tests, the amplitude of loading was ±160 kPa; the frequency of loading was 2 Hz. To better ascertain the effect of reinforcement, an unreinforced square footing was first tested. This was followed by a series of tests, each with a single layer of reinforcement. The reinforcement was placed at depths of 0.3B, 0.6B and 0.9B, where B is the width of footing. The optimal depth of reinforcement was found to be 0.6B. The effect of adopting this value versus the other two depths was quantified. The single layer of geogrid had an effective reinforcement depth of 1.7B below the footing base. The increase of the depth between the topmost geogrid layer and the bottom of the footing (within the range of 0.9B) did not change the failure mode of the foundation.

介绍了一系列在土工格栅加固的平方英尺上进行的动态模型测试。使用机械测试和模拟（MTS）电液伺服加载系统施加动态（正弦）加载。在所有测试中，加载幅度为±160 kPa；加载频率为2 Hz。为了更好地确定加固效果，首先测试了未加固的平方英尺。然后进行一系列测试，每个测试都具有单层增强。将增强物放置在0.3 B，0.6 B和0.9 B的深度处，其中B是基础宽度。发现增强的最佳深度为0.6 B。量化了采用该值与其他两个深度的影响。土工格栅的单个层具有1.7的有效加固深度乙下面的底基层。最顶层土工格栅层和基础底部之间的深度增加（在0.9 B范围内）不会改变基础的破坏模式。