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为设计和建造高土石坝,对其应力变形状态,以及不同的地形、结构和施工因素对土石坝工作性能及可靠性的影响,应进行全面的研究。近年来,土石坝二维条件下的应力变形计算得到了富有成效的发展,计算程序相当经济,所以能够利用因素分析的数学模式解算一系列的平面问题,并以此为基础进行研究[见参考文献1—4]。但是,在解算平面问题时,有许多因素,首先是地形条件,显然得不到考虑。因此,我们对土石坝的三维应力变形状态进行了研究,也就是借助离心机观察土壤模型
In order to design and construct a high earth-rock dam, its stress and deformation status, as well as the influence of different topography, structure and construction factors on the working performance and reliability of the earth-rock dam should be comprehensively studied. In recent years, the stress-strain calculation under two-dimensional conditions of earth-rock dam has achieved fruitful development. The calculation procedure is quite economical. Therefore, a series of plane problems can be solved by using the mathematical model of factor analysis and based on this study [see References 1-4]. However, in solving the plane problem, there are many factors, first of all, topographical conditions, which obviously can not be considered. Therefore, we studied the state of three-dimensional stress and deformation of earth-rockfill dams, that is, using the centrifuge to observe the soil model