摘要
大型机组蜗壳通常采用保压、垫层、直埋3种埋设方式,结合向家坝地下电站工程实际,通过不同蜗壳埋设方式对比计算分析,给出了一种适合该地下电站机组特点的直埋、垫层组合埋设方案。计算结果表明:组合方案具有混凝土应力分布均匀、拉应力值不大,能够充分发挥混凝土联合承载作用等优点,可作为推荐方案。
The spiral case of large hydraulic unit usually adopts three different embedding types including pressure preservation,cushion layer and direct embedment.In combination with the project of Xiangjiaba Underground Power Station,a combining scheme of the embedded directly spiral case with a cushion layer is given,which can be fit in features of this hydraulic unit.The results showed that the combining scheme can be recommended,which have the advantages of more uniform distribution of stress,less tensile stress and jointly bearing load with concrete.
出处
《长江科学院院报》
CSCD
北大核心
2010年第12期72-75,共4页
Journal of Changjiang River Scientific Research Institute
基金
中央级公益性科研院所基金(CKSF0210012)
关键词
蜗壳
埋设方式
有限元法
spiral case
embedding type
finite element method（FEM）
