论文部分内容阅读
薄拱坝是一种空间壳体受力结构,基础变形在很大程度上控制着坝体的应力状态。本文采用伏格特假定来考虑地基变形的影响,用壳体理论差分法,借助坝基应结点来实现弹性地基边界条件的影响,推导了弹性固结边界和设置底缝边界条件下实结点和虚结点的变位平衡方程式。通过实例用上述原理进行了计算,并通过结构模型试验予以验证。对几种不同周边条件的薄拱坝进行了实验研究,分析和评价了它们的优缺点,并建议了一种比较合理的边缝坝型。
The thin arch dam is a kind of space shell structure, and the foundation deformation controls the stress state of the dam to a great extent. In this paper, the Vogt’s assumption is used to consider the influence of ground deformation. Using the shell theory difference method, the boundary conditions of the elastic foundation are used to achieve the influence of the boundary conditions of the elastic foundation. The elastic consolidation boundary and the real knot point under the boundary conditions of the bottom seam are deduced. And the virtual node’s displacement balance equation. The above principle was used for calculation by examples and verified by structural model tests. Experimental studies have been conducted on thin arch dams with several different ambient conditions, their advantages and disadvantages have been analyzed and evaluated, and a more reasonable type of edge joint dam has been proposed.