高拱坝水垫塘底板稳定分析研究

Stability analysis on base slab of water cushion pond for high arch dam

针对高拱坝下的平底水垫塘和反拱水垫塘的稳定分析,根据水垫塘混凝土块体的受力分析和模型试验结果得出:在相同条件下反拱水垫塘的稳定性优于平底水垫塘,但反拱水垫塘底板的稳定性最终归结为拱座的稳定性,一旦拱座失稳,将会导致整个拱圈失事。

As for the analyses of fiat slab and reverse water cushion ponds under high arch dam, it is concluded from stressing analyses and model tests of its concrete block that the stability of the inverted cushion pond is superior to that of fiat one under the same circumstances, however, the stability of inverted cushion pond is finally laid on that of abutments. Once the arch abutments are destabilized, it will lead to the failure of entire arch ring.