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分析了加筋材料在拉拔试验条件下,筋材所受到的拉力、剪应力、应变之间的关系,利用筋土界面间存在的抗剪刚度系数G,建立起了与材料拉伸模量E r和G有关的拉拔影响系数,从而推导出拉力沿筋材分布的公式和各点筋土的相对位移公式。通过与已有的试验数据相对比,证实该公式的可行性。分析了拉力在筋材上的传播规律和对筋材拉拔力分布的影响,表明用能综合反映压应力、摩阻力、土体性质等多种因素对筋材拉力的影响。在加筋土结构中,筋材位移不是很大时,采用该公式能较好地估算筋材各处的拉力。
The relationship between the tensile force, shear stress and strain of the reinforced material under the condition of drawing test is analyzed. By using the shear stiffness coefficient G existing between the interface of the reinforced soil and the reinforced material, the tensile modulus E r and G related to the drawing of the impact coefficient to derive the distribution of tension along the bar formula and the relative displacement of each point of soil reinforcement formula. By comparing with the existing experimental data, it is proved that the formula is feasible. The propagation of tension on tendons and the influence on the distribution of tensile force of tendons are analyzed. The results show that the influence of compressive stress, frictional resistance and soil properties on the tension of tendons can be reflected comprehensively. In the reinforced earth structure, the displacement of the tendons is not very large, the formula can be used to better estimate the tension around the tendons.