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在实际土坝工程中,有不少人工或天然粘土防渗铺盖因运用中发生裂缝而影响工程的安全。铺盖裂缝按其成因大致可分两类,一类是由于下垫滤层失去保护作用而发生,另一类是由于铺盖在渗流作用下产生的固结变形与本身的强度不能适应而发生。 本文从渗流分析和变形及应力分析讨论了由于渗透固结而发生铺盖裂缝的一些问题。文中介绍了这种分析的有限元算法,并对可能产生裂缝的几种情况列出了计算分析的结果。
In the actual earth dam project, there are many artificial or natural clay seepage impermeable cover due to the occurrence of cracks and affect the safety of the project. According to its causes, bedding cracks can be divided into two types, one is due to the loss of protective effect of the underlying filter layer, and the other is due to the bedding deformation caused by seepage and the consolidation of its own strength can not adapt to occur. In this paper, some problems of bedding cracks due to infiltration consolidation are discussed from seepage analysis and deformation and stress analysis. In this paper, the finite element method of this kind of analysis is introduced, and the results of calculation and analysis are listed in several situations that may cause cracks.