The Level Anchor Solid Uplift Resistance With The Bottom Plates Of The Overflow CFRD Spillway Chute

In this paper, uplift resistance of level anchor solid inside overflow CFRD have been done with finite element calculation software to soil pressure’s calculation and analysis about many overflow CFRD calculation models. Vertical soil pressure’s calculation formula of any level section inside overflow CFRD has been fitted out through multivariate nonlinear regression analysis, after that, uplift resistance’s calculation formula of level anchor reinforcement also has been derived. By means of calculation and analysis, the results show that vertical soil pressure inside the dam catchment area of the overflow CFRD is curve distribution. Meanwhile, vertical soil pressure and uplift resistance of level anchor reinforcement is curve distribution, along with level anchor reinforcement length increasing, soil pressure and uplift resistance increases speed also as quickly.In vertical soil pressure fitting formula inside the dam basis, to move forward a single step, gotten out of the uplift resistance of anchorage block inside the dam. By the project sample application, after considering uplift resistance of anchorage block, three cases respectively anti-sliding stability of chute bottom slab was calculated:no any level anchor solid and only level anchor reinforcement and anchor block.After additionally provided with anchor block, anti-sliding stability of chute bottom slab has even more significant influence. Anti-sliding stability coefficient of chute bottom slab is direct ratio with anchor length and cross section size of anchor block. Along with the increase of the length of anchor block, Anti-sliding stability coefficient of chute bottom slab increases speed also as quickly. And when length of anchor block remain unchanged, the influence of Anti-sliding stability coefficient less than length. From the view point of convenient construction and anchor block’s strained condition and anti-sliding stability of chute bottom slab improvement effect, anchor block with appropriate cross section size and length should be added in project.