CAJ | 학술논문

钢筋混凝土蜗壳是低水头水电站厂房的主要结构之一，其形状比较复杂，主要结构计算方法有平面框架法和三维有限元法，其中以结构力学为主的平面框架分析法是最常用的方法。传统平面框架分析法由于未考虑平面框架之间的相互作用(环向影响)，计算成果与实际受力有所差异。为此，提出了改进的平面框架分析法，该法以传统平面框架模型为基础，通过改变约束条件，尽可能用平面模型反映三维空间效果。该法在清江高坝洲水电站厂房设计中得以应用，取得了满意的结果，其基本思路和假定已被《水工钢筋混凝土结构设计规范》SL192-2008和《水工设计手册》(第二版)所采纳。
강근혼응토와각시저수두수전참엄방적주요결구지일，기형상비교복잡，주요결구계산방법유평면광가법화삼유유한원법，기중이결구역학위주적평면광가분석법시최상용적방법。전통평면광가분석법유우미고필평면광가지간적상호작용(배향영향)，계산성과여실제수력유소차이。위차，제출료개진적평면광가분석법，해법이전통평면광가모형위기출，통과개변약속조건，진가능용평면모형반영삼유공간효과。해법재청강고패주수전참엄방설계중득이응용，취득료만의적결과，기기본사로화가정이피《수공강근혼응토결구설계규범》SL192-2008화《수공설계수책》(제이판)소채납。
The reinforced concrete spiral case, characterized as complicated shape, is one of the main structures in low-head hydropower house. The main calculation methods for this spiral case include plane frame analysis and the 3D finite element analy-sis, and the plane frame analysis based on structural mechanics is a commonly used measure. In some cases, results obtained by the traditional plane frame method are not consistent with actual mechanical behavior because the inter-action among the plane frames ( circular effects) is not considered. Therefore, we improve the traditional calculation method through considering more re-alistic constraint conditions to reflect 3D spatial effects on the basis of plan frame model. The presented improved method had been applied to the design of Gaobazhou Hydropower Station and satisfied results were obtained. The basic principles and as-sumptions of the presented method are adopted by "Design Code for Hydraulic Concrete Structures" SL191-2008 and"Manual for Hydraulic Structures (2nd edition)".