基于ABAQUS的再生混凝土冻融性能数值模拟研究

The Numerical Simulation Analysis to Freezing and Thawing Properties of Recycled Concrete Based on ABAQUS

随着建筑垃圾资源化的发展,再生混凝土在工程中的应用在不断推进。若想全面推广再生混凝土,则需加强对其耐久性能的研究,其中耐久性的重要指标之一就是冻融性能。利用ABAQUS有限元分析软件建立再生混凝土的温度场模型,将其结果作为预定义场导入热应力场,进行顺序耦合热应力分析。持续进行冻融环境下抗压试验数值模拟分析,从数值模拟的角度分析再生混凝土循环冻融的破坏规律。

With the recycling development of construction waste,the application of recycled concrete in engineering is constantly advancing.If the recycled concrete is to be promoted in an all-round way,it needs to speed up the research on its durability.One of the important indicators of durability is the freeze-thaw performance.Based on ABAQUS finite element analysis software,the temperature field model of recycled concrete is established in this paper.The results are introduced into the thermal stress field as a predefined field to analyze the sequential coupled thermal stress.Then,numerical simulation analysis to compression test is carried out under freeze-thaw cycles,from the point of view of numerical simulation,the freeze-thaw failure law of recycled concrete cycle is analyzed.