3D打印混凝土与其他材料工业产品的打印具有较大区别，打印混凝土建模受到打印工艺参数和质量成型影响参数的影响。为了提出适用于混凝土打印成型的建模方法，首先对3D打印建模的步骤进行论述；之后对影响建模的四个因素——打印喷头行进速度、出料速度、抬升高度、搭接宽度进行了研究，对各个参数采用控制变量的方法，逐个探究每个变量对混凝土打印成型的影响，进而确定最优的变量。试验证明：当打印喷头行进速度在30 mm/s左右、螺旋杆转动速度在0.9~1.1 r/s之间、混凝土搭接宽度超过5 mm、层厚为13 mm时，打印混凝土的总体变形很小，打印线条宽度较为理想，模型成型质量较高。因此，在建模的过程中，考虑工艺参数等对建模成型的影响，能够极大地提高3D打印混凝土的成型质量。
3D concrete printing is quite different from 3D printing with other materials, printing the concrete modeling is under the influence of the molding process parameters and quality parameters. In order to put forward a modeling method that is suitable for concrete printing, the paper first discussed the steps of 3D printing modeling, then four factors that affect the modeling were studied, which indude print heads speed, discharging speed, lifting height and width of the lap joint, using the method of control variables, the paper explored the influence of each variable on concrele printing, so as to determine the optimal variable. The resules showed that when the traveling speed of printing head was about 30 mm/s, the rotation speed of screw was between 0.9~1.1 r/s, the width of concrete lap joint was more than 5 mm and the layer thickness was 13 mm, the overall deformation of printed concrete was very small, the width of printing lines was relatively ideal, and the modeling quality was high. Therefore, in the modeling process, the influence of process parameters on the modeling should be considered, which could greatly improve the molding quality of 3D printed concrete.