Abstract In this paper, shaking table tests were carried out on both a small-scale and a full-scale earth-fill dams with geosynthetic clay liners to examine their seismic performance. The behavior of these fully instrumented earth-fill dams when subjected to seismic loading was also simulated by numerical analysis. Firstly, in the small-scale shaking table test, no failure was observed along the geosynthetic clay liner when the earth-fill dam was subjected to seismic motion. Numerical analysis confirmed that the behavior of the model earth-fill dam was unaffected by the geosynthetic clay liner. Secondly, a comparative shaking table test was carried out on full-scale earth-fill dams, one with a sloping core zone and another with a geosynthetic clay liner. Both model dams showed similar acceleration response and deformation behavior. It should be mentioned that the acceleration response increased gradually toward the top of the dam, and the deformation, after shaking, was relatively large near the foot of the slope. These observations were successfully simulated by the numerical analysis.

中文翻译：

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土工合成粘土衬砌土坝振动台试验抗震性能及数值模拟

摘要 在本文中，对土工合成粘土衬砌的小型和全尺寸填土坝进行了振动台试验，以检验其抗震性能。这些完全仪表化的填土坝在承受地震荷载时的行为也通过数值分析进行了模拟。首先，在小型振动台试验中，当填土坝受到地震运动时，沿土工合成粘土衬砌没有观察到破坏。数值分析证实，模型填土坝的行为不受土工合成粘土衬垫的影响。其次，在全尺寸填土坝上进行了对比振动台试验，一个带有倾斜的核心区，另一个带有土工合成粘土衬垫。两个模型大坝都表现出相似的加速度响应和变形行为。需要说明的是，加速度响应向坝顶方向逐渐增大，且在坡脚附近发生晃动后变形较大。通过数值分析成功地模拟了这些观察结果。