论文部分内容阅读
采用理想弹塑性载荷传递函数关系,根据压力型锚索锚固段的受力平衡,利用锚固体、锚索和注浆体之间共同作用的位移模式,导出压力型锚索锚固段的剪应力和轴向力的分布函数。在此基础上讨论不同参数锚固段应力分布的影响。通过分析得出:(1)外部施加的预应力越大,在锚固体受力容许范围之内,其锚固效果越好;(2)通过对综合参数EA的分析得出,此参数是锚固体的力学参数和结构参数的综合,从物理意义上增加锚固段的有效直径或提高锚固段的弹性模量均可改善其锚固效果。所得结果为压力型锚索的设计和计算提供一种理论参考。
Based on the ideal elastic-plastic load transfer function, according to the stress balance of the anchorage section of the pressure-type anchor cable, the shear stress of the anchorage section of the pressure-type anchor cable is deduced by using the displacement mode of the anchor body, the anchor cable and the grouting body. Axial force distribution function. Based on this, the influence of different parameters on the stress distribution in anchorage section is discussed. The analysis shows that: (1) The larger the external prestress, the better the anchoring effect within the allowable range of the anchorage force; (2) The analysis of the comprehensive parameter EA shows that this parameter is the anchor The combination of mechanical parameters and structural parameters can improve the anchoring effect by increasing the effective diameter of the anchoring section or increasing the elastic modulus of the anchoring section in the physical sense. The results provide a theoretical reference for the design and calculation of pressure-type anchor cable.