Mechanical properties of Moso bamboo root-soil composite based on field prototype testing
Moso bamboo is widespread in the hilly and mountainous regions of southeastern Fujian.Moso bamboo is extensively distributed across the hilly and mountainous regions of southeastern Fujian.To delve into the unique vegetation Moso bamboo's root-soil composite and its resistance to pullout and shear forces,as well as its influence on slope stability,we conducted on-site whole Moso bamboo pullout tests and in-situ shear tests using bespoke instruments on Moso bamboo of varying diameters in the landslide-prone area of Zhuangbian Village,Linglu Township,Yongtai County of Fuzhou.A universal testing machine was employed to conduct single-root pullout tests on roots of varying diameters within the on-site root-soil complex.The results reveal that the diameter of Moso bamboo influences its tensile strength during whole-plant pullout tests,with larger diameters exhibiting higher ultimate tensile and shear strengths.Both the Moso bamboo culm and rhizome play a crucial role in resisting pullout forces.Moreover,the diameter of individual Moso bamboo roots shows a linear positive correlation with the ultimate tensile force while tensile strength decreases with increasing root diameter.Regarding shear resistance,there is a positive correlation between Moso bamboo diameter and the shear strength of the root-soil composite.It is of great significance in theoretical and practical implications for analyzing the mechanical properties of Moso bamboo root-soil composite,understanding the mechanisms of geological disasters in Moso bamboo forest slopes,and enhancing the effectiveness of vegetation in slope protection.
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