土(堆)石坝施工过程位移场有限元仿真分析

Displacement simulation of earth-rock dam in construction process by finite element method

基于克拉夫堤坝逐级施工位移分析提出考虑坡面的位移修正理论 ,研究施工过程位移机理 ,认为当前施工层加载产生的位移场 ,对于单单元层的施工层 ,只要施工层足够多 ,就能有较好的位移仿真精度 ;对于多单元层 ,当前层以下的位移增量是正确的 ,当前层内结点位移必须进行修正 。

Based on Clough theory about displacement calculation in a dam construction, a revised one is come out considered dam sloping faces, and the displacement mechanism is discussed. When current layer is loading, it is correct that displacement increment arise in down layer(s). And to mono_element layer in a construction one, the denser the mesh, the better the precision. However, to multi_element layer, node displacement in the layer must be modified, and the consideration of sloping face influence can get better precision for displacement simulation in dam construction.