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在假设混凝土中铅直应力是直线分布的基础上,给出一些简单的公式和附图来说明具有排水管任何布置时浮托力对于实心重力坝的应力和断面的影响。浮托力的不同分布与数值对于中等高坝坝体的影响能够立刻看出来。对两个设计原理的结果作了比较,并证明了对于中等高坝全部重量的差别是不大的。但以后另一篇论文将要指出当包括有地震荷载时,这结论就不正确了。对内部排水管的布置以及它们对于混凝土铅直应力分布的影响也进行了讨论,并指出了当设备有内部排水管时,习惯上假设的直线分布可能是不够完满的;但如果对某些参数从新加以解释,本论文的结论仍然是有效的。
Based on the assumption that the vertical stress in the concrete is linear, some simple formulas and figures are given to illustrate the influence of the floating force on the stress and fracture surface of a solid gravity dam with any arrangement of the drainage pipe. The different distribution and numerical values of the floating force can be seen immediately for the dam of medium dam. The results of the two design principles are compared and it is proved that there is not much difference for the total weight of medium dam. However, another paper in the future will point out that this conclusion is not correct when the seismic load is included. The layout of the internal drainage pipes and their influence on the vertical stress distribution of the concrete are also discussed. It is pointed out that when the equipment has an internal drainage pipe, it is customary to assume a straight line distribution which may not be sufficient. However, if some parameters Reinterpreted, the conclusion of this thesis is still valid.