基于复合材料力学模型的生态复合墙体研究

生态复合墙体作为生态复合墙结构的主要受力构件,它是由生态复合墙板与隐形外框组成的墙肢或墙段.复合墙体构造上的特殊性及多种材料的使用,使其弹性常数不易确定,进而影响墙体抗侧刚度的计算.基于前期试验研究,针对墙体独特构造,结合复合材料力学理论,建立适用于生态复合墙体的弹性阶段模型--双向纤维单层复合材料模型,推导出墙体弹性模量及剪切模量实用计算公式,为生态复合墙体的实用抗侧刚度计算公式提供必要的参数;利用弹性力学对各向异性等效弹性板的抗侧刚度进行推导,理论计算与试验结果的对比分析表明:在生态复合墙体抗侧刚度计算中,复合材料力学简化模型具有实用性和有效性.

STUDY ON ECO-COMPOSITE WALL BASED ON COMPOSITE MATERIAL MECHANICAL MODEL

An eco-composite wall,acting as the main bearing member of a structure,is made up of a concealed frame and eco-composite wall boards.It is extremely complicated to determine the elastic constants of the wall because of the special construction and different materials used in the wall.It is also difficult to calculate the lateral stiffness of the wall accurately.Based on the previous experimental study,aimed to the special construction of the wall and combined the theory of composite material mechanics,a single-layer composite material model of bi-directional fiber for the wall in the elastic stage is established.The practical design formulas for the elastic modulus and shear modulus are given,which provide the necessary parameters for the practical design formula for elastic rigidity.The lateral stiffness of an equivalent elastic composite slab is deduced by use of elastic mechanics theory.The comparative analysis between the theoretical calculation and test results shows that the composite material mechanical model is practical and effective for calculating the lateral stiffness of the wall.