配筋和填筑顺序对三板溪堆石坝的影响

采用有限元数值分析方法和引入邓肯-张E-B非线性弹性模型，对三板溪堆石坝的坝体变形、施工顺序和面板配筋进行了详细分析，由于坝体次堆石区的填筑料远比主堆石区差，导致下游坝体的水平位移大于上游坝体，最大垂直沉降区域偏向于下游坝体；实际坝体填筑顺序有助于减少坝体向下游的水平位移，加速次堆石区在施工期的沉降，从而减轻坝体沉降对面板的影响；双层配筋方案能大大改善面板的应力应变状态，减少面板的结构性裂缝，同时还能减少面板表面的温度裂缝。

Influence of Rebar Design and Construction Sequence on Sanbanxi Rockfill Dam of Concrete Face

With the application of FEM numerical computation and the non-linear elastic E-B model of Duncan-Zhang, the dam deformation and rebar design of concrete face and dam construction consequence are analyzed. Because of worse weathered rock material in downstream dam, the downstream dam has much more horizontal and vertical displacement than that of upperstream dam. The real dam construction sequence can decrease dam horizontal displacement toward downstream and accelerate dam settlement during the period of dam construction and then decrease the bad influence on concrete face of rockfill dam. double rebar design is able to make the stress and strain of concrete face become better, decrease danger of constructional fracture and surface crack because of temperature change.