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取坝体河床部位最大横断面为计算的典型剖面,进行了二维非线性有限元分析。坝体以及覆盖层采用了邓肯—张E-v和E-B本构模型,在混凝土盖板和心墙之间设置了无厚度GOODMAN接触单元。考虑坝体填筑和分期蓄水相结合的施工过程,分析得出了坝体(包括覆盖层、填筑区等)顺河流向水平位移、竖直沉降、应力水平、大主应力以及小主应力分布等情况,同时得出了一系列有益的现象和规律,对于同类工程的建设、实际工程的设计与施工具有一定的借鉴作用。
Taking the largest cross section of the dam body as a typical section of the calculation, a two-dimensional nonlinear finite element analysis was carried out. Duncan-Chang E-v and E-B constitutive models are used for the dam and overburden, and a thicknessless GOODMAN contact element is placed between the concrete cover and the core wall. Taking into account the construction process of combining dam filling and staging storage, the paper analyzes the horizontal displacement, vertical settlement, stress level, main stress and the main stress of the dam (including the covering layer and the filling area) Stress distribution and so on. At the same time, a series of beneficial phenomena and rules have been obtained, which have certain reference for the construction of similar projects and the design and construction of practical projects.