不同放置方式对无砂混凝土板过水流量的影响

针对500 kV架空地线防振锤较易出现的滑移现象，分析了地线防振锤的结构特点、运行工况及无风有风力学模型，得出了架空地线防振锤出现滑移的原因为防振锤的受力特点、材料配对及地线蠕变伸长所致，从结构变更、材料选择等层面提出了4种防滑移改进方案，经综合对比最终确定最佳方案（方案1）并将其制成成品。有限元软件ANSYS Workbench仿真和防振锤定型试验结果表明，该方案符合使用要求，能够为地线防振锤滑移的运行维护工作提供一定的参考。

Influence of Different Placement Ways on Water Flow of No-Sand Concrete Slab

In order to study the influence of different placement ways on the hydraulic performance of no-sand concrete slab, hydraulic model test was used to analyze its variation laws under different compactness and water head. Experimental research result shows that no-sand concrete slabs'' solidity is negatively correlated with its water permeability; the vertical infiltrate with horizontal placement of no-sand concrete slab is larger than horizontal infiltration with vertical placement. When the head is higher and the porosity is lager, the impact of the placement way on water flow of the no-sand concrete slab is smaller.