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本文用平面有限元法来分析周边缝拱坝,将坝体与垫座作为一个整体来考虑,不仅能计算坝体应力,反映坝体与垫座之间的相互作用,而且能计算出底缝的应力分布状态。本文分四个部分,第一部分讨论了平面有限单元法计算拱坝的方法,提出了平面拱坝单元的新概念,并推导了其单元刚度矩阵,在这部分结尾时有算例与拱冠梁法的结果比较。第二部分讨论和分析了底缝单元的单元刚度矩阵及有关参数的确定,以及用来分析周边缝拱坝的计算步骤。第三部分是算例与实验成果的比较。第四部分是小结及对成果的分析。
In this paper, the planar finite element method is used to analyze the surrounding fractured arch dams. Considering the dam body and the pedestal as a whole, not only can the dam body stress be calculated, the interaction between the dam body and the pedestal can be reflected, but also the bottom seam can be calculated. The stress distribution state. This article is divided into four parts. The first part discusses the method of flat arch finite element method for arch dam calculation, proposes a new concept of planar arch dam element, and derives its element stiffness matrix. At the end of this part there are examples and arch crown beams. Comparison of the results of the law. The second part discusses and analyzes the determination of the element stiffness matrix and relevant parameters of the bottom seam unit, and the calculation steps used to analyze the surrounding fractured arch dam. The third part is the comparison between the examples and the experimental results. The fourth part is a summary and analysis of the results.