Stress Deformation Of Overflow CFRD Calculation And Parameter Sensibility Analyses

So far, the ordinary Concrete Face Rockfill Damˋ s design and the construction technology have developed the relative consummation, is quite mature. In recent years, along with the Concrete Face Rockfill Damˋ s roller compaction technology unceasing promotion, the Concrete Face Rockfill Dam has become the possibility in the canyon area construction opeing wide -like the overflow of concrete face rockfill dam.In 1991, Australia has completed in the world the first overflow of concrete face rockfill dam—Crotty Dam, thus pulled open has constructed the overflow of concrete face rockfill dam prologue in the world scope. This kind of dam is later in the domestic start, so far, which Xin jiang yu shu gou overflow of concrete face rockfill dam has been only completed in domestic. Because this kind of dams‵ construction in domestic is not many, the experience and the useful reference is very few. Therefore, there is the necessity to conduct the comprehensive analysis research regarding this.This article take Xin jiang yu shu gou overflow of concrete face rockfill dam as the research object, in the EFESD procedure foundation of Shen Zhoujiang academician's ,I has carried on two developments. By the non-linearity elastic E ~ B model,I studied the overflow of concrete face rockfill dam's biggest cross section's stress and deformation in the completion period,the water storage period,the sluicing period and the earthquake period .Not only I has studied the two-dimensional under situation, moreover also has studied the three dimensional under situation, Through the contrast analysis between the two-dimensional and the three dimensional,we can discovery which regarding the model "v" of the overflow of concrete face rockfill dam, in the dam body it has the arch effect which the two-dimensional and the three dimensional computed result difference is very big. If only uses the two-dimensional computed result to explain this kind of dam stress and deformation characteristics will have the very big error.whether the overflow of concrete face rockfill dam's spillway designs is reasonable, and whether the stress and the deformation satisfy need ,they will affectdirectly the entire dam safe operation. We also studied the spillway stress and deformation distribution rule in the article, and obtain some beneficial conclusions through these analysis research, these conclusions might provide the beneficial reference and the reliable basis for the later this kind of dam's spillway design and the construction.Moreover, we also has studied this kind of dam material parameter sensitivity analysis in the article. We studied the sluicing period sensitivity.Because of the dam's body weight, the still water load function and the move water load function in the sluicing period, we can discovery the conclusions that the various parameters sensitivity affects'difference for deformation is not big, but their affects'difference for the principal stress is very big. Through this material parameter sensitivity analysis, we could have the very good reference for material parameter optimization in the future.