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混凝土结构性能的衰退直到最终退出工作均与结构中的裂缝关系密切。而混凝土材料本身的特点是:在荷载和外界环境及不确定因素的影响下混凝土内部产生收缩,导致内应力重分布,进而形成裂缝,并最终影响混凝土结构的耐久性与服役寿命。在本文中,我们创新的运用拉普拉斯偏微分方程解释混凝土收缩性裂缝的扩展机理,并利用有限元分析软件(Ansys)对裂缝的受力情况进行仿真模拟。最后,我们针对实际施工过程中出现的收缩性裂缝提出了具体的控制措施。
The deterioration of the performance of concrete structure until the final exit work is closely related to the cracks in the structure. The concrete material itself is characterized by: under the influence of load and external environment and uncertainties, shrinkage occurs inside the concrete, resulting in the redistribution of internal stress, and then the formation of cracks, and ultimately the durability and service life of the concrete structure. In this paper, we use Laplace partial differential equations to explain the expansion mechanism of concrete shrinkage cracks in this paper, and use the finite element analysis software (Ansys) to simulate the stress of the cracks. Finally, we put forward specific control measures for the shrinkage cracks that occur during the actual construction.