土工格栅加筋粉煤灰堤坝的室内模拟试验研究

通过室内小比例尺模型试验,模拟了双向土工格栅在粉煤灰堤坝中相同边坡坡比下,未加筋与加1层、2层筋等不同结构形式在坡顶荷载作用下坡顶沉降和边坡的变形规律,研究了土工格栅加筋参数对堤坝边坡结构性能的影响。试验结果表明,加筋能大幅提高堤坝的稳定性和承载能力,对工程实践具有一定的指导意义。

Study of Model Tests on Powder Ash Embankments Reinforced by Geogrids

With two small-scaled test models,the structural performance of both a reinforced structure and an un-reinforced structure with the same slope angles is studied,with the double oriented geo-grids;and three different reinforcement layers,zero,one and two layers respectively added to them.Under a strip footing load near the slope crest,the deformations of slopes and geo-grids are simulated.The coefficients of reinforcement affecting the structural performance of the embankment are explored;and the mechanical characteristics of geo-grids in the powder ash embankments are worked out.It is proved that geo-grids will improve the stability and the capability of the slope.