蜂窝夹层铝建筑模板的几何优化与试验研究

建筑模板技术的创新对混凝土工程具有重要意义。该文对铝建筑模板采用蜂窝夹层结构的可行性进行计算分析与实验研究。首先根据Gibson理论计算蜂窝夹心结构的等效弹性参数，然后参考Reissner模型计算蜂窝夹层模板在均布荷载作用下的应力与变形，再按照铝建筑模板行业标准要求控制模板的变形条件和约束条件，对该模板蜂窝夹层结构的几何参数进行了优化。最后进行蜂窝夹层铝模板的弯曲试验，使用数字摄影测量系统获得了铝模板试件在不同载荷条件下的三维全场变形数据，试验结果与理论计算结果吻合较好。研究结果表明，采用蜂窝夹层结构可将铝建筑模板的质量降低60%以上。

GEOMETRICAL OPTIMIZATION AND EXPERIMENTAL STUDY OF ALUMINUM HONEYCOMB SANDWICH CONSTRUCTION FORMWORKS

The technique innovation of construction formwork is of great importance in concrete engineering.The possibility of applying honeycomb sandwich structures to aluminum construction formwork was analyzed by computational and test methods.The equivalent elastic parameters of a honeycomb core structure were calculated based on Gibson’s theory,and then the stresses and deformation of the honeycomb sandwich construction formwork subjected to a uniformly distributed load were computed by using Reissner’s model.The geometrical parameters of the honeycomb sandwich structure were optimized under the deformation and constraint conditions according to the industry standard of aluminum construction formwork.Finally,the bending tests of the honeycomb sandwich aluminum construction formworks were conducted in which full-field three-dimensional deformation data were acquired by using a digital photogrammetric system.The test results are in a good agreement with that of the theoretical computation.It shows that the mass of the aluminum formwork can be reduced at least 60%after the application of honeycomb sandwich structures.