引張剛性に着目したマットレスの支持力特性と補強メカニズムの考察

抄録

The mattress ground reinforcement method is characterized by simplicity, a well-established design procedure, and relatively low cost. Thus, it is widely adopted in practice, and its effectiveness is confirmed. However, the existing method does not consider the tensile stiffness of geotextiles in the design. In this paper, a series of model loading tests was conducted using aluminum rod laminates and two types of geotextile with different tensile stiffnesses. The tensile forces on the geotextiles and the strain distribution in the ground were measured to examine the effect of the geotextile tensile forces on the bearing capacity of the mattresses. It was found that the larger the tensile stiffness of the geotextile, the more effective the generated tensile forces, resulting in a greater restraining effect within the mattress. Consequently, this enhances the bearing capacity of the ground and results in a less immediate settlement.