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渗透压力是重力坝设计的主要荷载之一,对坝体的应力及稳定均有较大的影响,因而研究渗压作用时坝体的应力具有重要的实际意义。以往国内外研究人员在逭方面进行了大量工作,提出不少计算方法,但其中存在的问题颇多,尚未得到完满解决。本文根据弹性力学理论对这一问题进行了探讨,研究结果表明:苏联及我国重力坝设计规范及一些书刊中所介绍的渗压应力分析方法是错误的。并从理论推导得出如下结论:在渗透压力作用下,重力坝任意点的正应力与该点的渗透压力强度大小相等、方向相反,剪应力等于零。即
The seepage pressure is one of the main loads of the gravity dam design, which has a great influence on the stress and stability of the dam. Therefore, it is of great practical significance to study the stress of the dam during seepage pressure. In the past, researchers at home and abroad conducted a great deal of work on this issue and put forward many calculation methods. However, there are many problems that have not yet been satisfactorily solved. In this paper, the issue of elastic mechanics is discussed in this paper. The results show that the design rules of the gravity dam in the Soviet Union and our country and the methods of seepage stress analysis introduced in some books and magazines are wrong. From the theoretical deduction, we can draw the following conclusion: Under the osmotic pressure, the normal stress at any point of the gravity dam is equal to the osmotic pressure intensity at this point, and the opposite direction, the shear stress is equal to zero. which is