CAJ | 학술논문

里底水电站溢流道闸墩承受的荷载以及结构较为复杂,为了准确了解堰体、闸墩、锚块在各典型运行工况下应力和变形情况, 本文采用三维有限元方法,对该水电站溢洪道控制段预应力中墩进行了整体空间应力与变形分析,得到典型工况下结构的整体位移、变形和结构各重要部位的应力分布规律.研究结果表明预应力闸墩具有整体稳定性,在各种荷载组合效应下整个墩体的变形和应力分布满足设计要求,并根据计算成果评价了混凝土结构的预应力效果.
리저수전참일류도갑돈승수적하재이급결구교위복잡,위료준학료해언체、갑돈、묘괴재각전형운행공황하응력화변형정황, 본문채용삼유유한원방법,대해수전참일홍도공제단예응력중돈진행료정체공간응력여변형분석,득도전형공황하결구적정체위이、변형화결구각중요부위적응력분포규률.연구결과표명예응력갑돈구유정체은정성,재각충하재조합효응하정개돈체적변형화응력분포만족설계요구,병근거계산성과평개료혼응토결구적예응력효과.
The structure and bearing loads of spillway piers of Lidi Hydropower Station are rather complex. In order to understand the stress and deformation of weir , pier and anchor block , the whole space stress and deformation for spillway middle piers were analyzed by 3D FEM. Then the distribution rules of whole deformation and stress of the structure under typical working conditions were obtained. According to the results,the prestressed pier was stable totally , the distribution of whole stress and displacement of the structure under different loading combination met the design requirements. The effect of prestressing of concrete structure was evaluated.