【摘要】 本文介绍基于真实非均质岩土材料的数值方法与研究进展.这些方法运用新发展的数字图像技术,获取真实岩土和混凝土材料的细观非均质分布,再进行定量细观结构研究,采用数值计算程序,定量分析它们的物理力学响应,为解决限制岩土和混凝土力学进一步发展的非均质材料假设问题提供了有效途径.本文介绍该方法的研究背景和三项主要内容.包括真实细观非均质岩土材料力学数值分析方法,非均质岩土材料数值网格计算方法,和非均质岩土材料力学响应重要规律.更多还原

【Abstract】 This paper presents the digital image based numerical methods and their development history for mechanical analyses of geomaterials and concretes with actual meso-heterogeneity. The methods used newly developed digital image processing techniques, captured the actual meso-heterogeneity of geomaterials(soil and rocks) and concretes, then conducted quantitative assessment of the actual meso-heterogeneity, further incorporated the meso-heterogeneity into conventional numerical software, and quantitatively analyzed the responses of these materials under loading. The methods offered the innovative and quantitative approach to overcome the key assumption of homogenization utilized in conventional geomechanics. This paper also describes the research background and three main contents. They include the numerical methods for analyzing the geomechanics of actual meso-heterogeneity, the computational methods for mesh generation of actual meso-heterogeneity, and the meaningful regulations associated with the responses of geomaterials with meso-heterogeneity.更多还原