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对土工格栅加筋碎石土进行了系统的试验研究。结果表明：加筋复合体受力变形条件、加筋层间距及土料性质是影响碎石土加筋效果的重要因素；加筋能明显提高碎石土强度，减小变形；格栅的加筋机理服从准粘聚力原理，其加筋作用可分为格肋阻力及格栅对界面碎石土的咬合摩擦力两部分，张力膜效应只有在某些特定条件下才起主要作用。
A systematic experimental study of geogrid-reinforced gravel soils was conducted. The results show that the stress and deformation conditions of the reinforced composites, the spacing between the reinforcement layers and the properties of the soil are important factors affecting the reinforcement effect of the gravel soil; the reinforcement can significantly increase the strength of the gravel soil and reduce the deformation; The rib mechanism follows the principle of quasi-adhesive force, and its reinforcement can be divided into two parts: rib resistance and grid-occlusion frictional force of interfacial crushed soil. The tension membrane effect plays a major role only under certain conditions.