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中文摘要：
文章应用动力弹塑性分析方法对土工格栅加筋坝坡的抗震效果进行了研究；通过分析强震作用下坝体的地震反应特性，在加速度反应较大的坝坡——坝顶（1／5H）范围，对称铺设土工格栅；根据地震作用后坝体的剪应变、永久位移以及稳定安全系数来评价其抗震加固效果，同时研究了高土石坝加筋后的破坏机理。结果表明，土工格栅加筋能加强坝顶区堆石体的稳定，有效控制坝顶部单元变形，使坝体的永久位移变小，坝坡的稳定安全系数增大，能有效控制坝体的浅层滑动，与振动台试验结论较为一致，可为工程实际应用提供理论参考。
英文摘要：
This paper studies the anti-seismic effects of geogrid reinforced dam slope by using dynamic elasto-plastic analysis method. By studying the dynamic responses of high earth-rock filled dam under strong earthquake, the geogrids are installed symmetrically in the dam slope（i/5/-/） with a stronger acceleration response. The dam body＇s shear strain, permanent displacement and safety factor of sta- bility after earthquake are taken into account and used as a criterion to evaluate the anti-seismic effects. The failure mechanism of the high earth-rock filled dam after reinforcement is also analyzed. The results show that, by adopting the geogrid reinforcement, the stability of the rockfill can be im- proved at the top of the dam and the collapse of the elements at the top of the slope can be effectively controlled, so the permanent displacement can be greatly reduced, the safety factor of slope stability can be increased, and the shallow slip of the dam body can be effectively controlled. The conclusion is close to that of the shaking table test, which is valuable for the anti-seismic measures in engineering practice.
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