借助于一系列的光弹组合模型试验和有限元计算,本文在地基弹性模量变化较大的范围内(特别是软弱基岩情况)究研了重力坝坝体的应力情况;并将这些成果与各种理论解答作了比较。此外,本文还扼要介绍了国内外有关复杂地基对重力坝应力影响的研究成果。结合某工程选线,研究了复杂的地质构造(包括软弱夹层、断层破裂带等)对坝体应力的影响;为了改善应力分布,还进行了设置改善措施的实验。 With a series of photoelastic model tests and finite element calculations, the paper studies the stress conditions of gravity dam in the range of large changes in the elastic modulus of foundation (especially in the case of weak bedrock); and these results Compared with various theoretical solutions. In addition, this article also briefly introduces the research results of the impact of complex foundation on the stress of gravity dam at home and abroad. Combined with the line selection of a project, the influence of complicated geological structures (including weak intercalations and fault ruptures) on the dam stress is studied. In order to improve the stress distribution, experiments are also conducted to set up improvement measures.