钢筋混凝土细观数值分析.docVIP

学号:1311083034 姓名:宫能军 钢筋混凝土的细观数值仿真技术研究 摘要 混凝土是土木工程中用途最广、用量最大的建筑材料，可以按预定性能设计和制作，研制轻质，高强度，多功能的建筑材料，一般意义上的混凝土是指用水泥作胶凝剂，用砂或石作为集料，用水（加或不加外加剂和掺合剂）按一定的比例配合，经过搅拌、成型、养护而得的水泥混凝土。混凝土可以看做一种人工石材，由于其原料丰富，造价低廉，工艺简单的特性，使其在工程中有广泛的应用。由此可知：混凝土是一种复杂的多相复合材料，它的力学性能依赖于不同组成部分各自的力学性能，同时，混凝土内部构造又显著地影响着裂纹的萌生和发展，所以，用细观层次上的研究方法，将混凝土材料看成是一种非均质的混合材料成为了研究混凝土各方面性能的有力手段。 随着现在计算机科学的发展，许多工程问题的模拟可以通过某些软件来模拟、分析、优化等，进行解决。而ANSYS是目前国际上主流的有限元分析软件，他有众多的单元可供选择，可以获得不同阶段的受力性能，以及很完备的前处理和后处理。并且ANSYS可以对钢筋混凝土的各种结构在各种外载荷条件下的受力，变形，稳定及各种动力特性作出全面的分析，因此，ANSYS对钢筋混凝土结构的力学行为的模拟有很大的意义。 关键字:混凝土、细观数值分析、ANSYS ABSTRACT Concrete is the most widely used in civil engineering purposes, the largest amount of construction materials, pre-performance design and production, the development of lightweight, high strength, multi-functional building materials, and general sense of the concrete is cement, a gelling agent,with sand or stone aggregate, water (with or without admixtures and admixtures) with a certain proportion after mixing, molding, curing derived cement concrete. The concrete can be seen as a kind of artificial stone, due to its abundant raw materials, low cost, simple process, characteristics, so that a wide range of applications in engineering. Can be seen: concrete is a complex multi-phase composite, its mechanical properties depend on the different components of the mechanical properties of the same time, the internal structure of concrete significantly affects the crack initiation and development, so, using micro the level of research methods, the concrete material as a non-homogeneous mixture of materials has become a powerful means to study various aspects of performance of the concrete.With the development of computer science, simulation of many engineering problems can be some software to simulate, analyze, optimize, etc., to resolve the issue. ANSYS is currently on the international mainstream of the finite element analysis software, he has a large number