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本文介绍了一种通用的用来分析施工期实测土坝断面沉陷分布的方法。具有不对称沉陷分布的土坝可以看成是一维的非均质填方体,且具有不同的刚度和容重。在研究二维平面应变问题中几何形状(如荷栽传递、侧限减少)对沉陷分布的影响时可参考一维分析的结果。使用该方法有可能找出影响均质土坝与非均质土坝(分区坝)沉陷分布的各个因素。为了显示其实用性,文中给出了使用该方法来分析两个土坝工作性态的例子:卡斯特拉基和比利切分区坝。通过这两个例子分析表明,要想详细分析土坝工作性态,使用反分析方法也许更为合适。
This paper presents a general method for the analysis of the subsidence distribution of earth dam sections during construction. Earth dams with asymmetrical subsidence distributions can be considered as one-dimensional heterogeneous cubes with different stiffness and bulk density. One-dimensional analysis can be consulted when studying the influence of geometry (such as load transfer and reduction of confinement) on the distribution of subsidence in a two-dimensional plane strain problem. Using this method it is possible to find out the factors that influence the subsidence distribution of homogeneous and heterogeneous earth dams (zonal dam). In order to show its practicality, an example of using this method to analyze the working behavior of two earth dams is given in the paper: Kastraki and Bélica zonal dam. The analysis of these two examples shows that it may be more appropriate to use the inverse analysis method in order to analyze the behavior of the earth dam in detail.