关键词: 锚杆泄槽, 均匀正交设计, 敏感性分析, 时域分析法, 流激振动性能, 溢流面板坝

Abstract: Aiming at the complexity of flow-induced vibration in anchored discharge channel of overflow concrete-faced rockfill dam, a three-dimensional simulation model was established to carry out sensitivity analysis to the anchor design parameters by time domain analysis. The results show that under the condition of the flow velocity v≤40 m/s, in the three anchor design parameters that affect the flow-induced vibration performance of the dam, the anchor′s interval has the most influence on the tensile stress and normal deformation of the specified points besides the minor influences of anchor′s buried length and diameter. The general rule is that the stress at the key point increases with the increase of the interval and diameter, while it decreases with the increasing of the buried length; the normal deformation at the key point increases with the increasing of the buried length and the diameter, and it decreases with the denser interval. There is a significant sequence of the three factors: buried space > buried length > diameter. The research results can provide guidance for the design of the anchor parameters of spillway channels.

Key words: anchored discharge channel, uniform orthogonal design, sensitivity analysis, time domain analysis, flow-induced vibration behavior, overflow concrete-faced rockfill dam