面板坝连接板布置及受力变形分析OA

The upper reservoir of pumped storage power station mostly adopts the anti-seepage measures of the whole reservoir basin.The connection between the face slab of the upper reservoir dam with backfill layer and the anti-seepage body at the bottom of the reservoir is a weak link of anti-seepage.Whether the connecting plate can be set,and the stress effect of the connecting plate on the surrounding structure and the optimal setting are worth discussing.In this study,the finite element analysis model of the concrete faced rockfill dam with toe slab,connecting slab and gravel cushion is established for the upper reservoir of a pumped storage power station.The results show that the setting of connecting plate can reduce the tensile stress at the edge of the asphalt concrete face plate,and reduce the possibility of cracking of the asphalt concrete face plate at the bottom of the reservoir;With the increase of backfill depth,the displacement of asphalt face slab at toe slab and connecting plate increases,but has little effect on its relative settlement and horizontal stress;When the layout of three equal length connecting plates is adopted,the shear deformation of each joint is the smallest,which is the optimal layout of connecting plates.The study can provide reference for similar dam layout schemes.