【作者】 袁翠平；

【导师】 朱岳明；

【作者基本信息】 河海大学 ， 水工结构工程， 2006， 硕士

【摘要】 本文在总结大量文献研究的基础上,主要阐述了渗流基本理论,以及本文主要研究的碾压混凝土坝的渗流理论。研究碾压混凝土坝复杂的渗流特性,并利用有限单元法,结合某一工程实践,围绕该坝的渗控措施作详细的分析研究: (1) 碾压混凝土坝的渗流理论以及其特有的渗流特性。从渗流的基本概念说起,进而具体到碾压混凝土坝的渗流理论和渗流特性。得到碾压混凝土坝特殊的施工方式带来成层的坝体结构,使得坝体渗流场成复杂的各向异性,为实际工程的研究提出重点和难点。 (2) 研究碾压混凝土坝渗流场计算的有限单元法。主要阐述为精确模拟渗流场中众多排水孔渗控作用的排水子结构法,以及模拟这些特殊层面和缝面渗流作用的缝面无厚度平面单元法,同时还阐述精细求解渗流场渗流量的等效节点流量法等。 (3) 某碾压混凝土坝渗流场的分析研究。将前文所述的理论应用到具体的工程实践,计算分析该工程的渗流场特性,以及对不同的渗控措施作敏感性研究,量化不同渗控措施具体的渗控作用,在此基础上提出建设性的意见和结论,为实际工程建设服务。更多还原

【Abstract】 Combing some project practices and literatures research about seepage in RCCD, the author has made a particular analysis and research in the basis of the FEM theory. Main work are as follows:1. The analysis of theory and characteristics on RCCD. From the basic concept about the seepage to the seepage characteristics about RCCD, we know that the characteristics of RCCD is aeolotropism, which brings forward keystone and difficulty for practical projects.2. Study on the FEM theory cited by the analysis of the seepage. Mainly expatiating the drainage substructure for simulating drainage holes, and plane element model for the RCC intervals. At the same time the author expounds the method for accounting seepage flow accurately and quantitatively.3. The analysis of a certain RCCD seepage field is studied. Applying the former theory on the certain RCCD, the author has analyzed its seepage characteristics. The effect about each measure is quantitatively evaluated. And at last the author has given constructive opinions and conclusions. All these have profound meanings.更多还原