【摘要】 将伪均质流理论、浆体管道运输理论及固液两相流理论运用于预应力管道压浆技术,并通过水力坡度公式试验验证上述理论的适用性.基于预应力波纹管及预应力筋对管道浆体流速影响的试验,提出了预应力波纹管影响下浆体出管速度衰减系数及添加预应力筋条件下浆体出管速度衰减系数,并引入便于计算的面积衰减系数,得到了适用于预应力波纹管和添加预应力筋的预应力管道压浆的指导压力.更多还原

【Abstract】 Pseudo-homogeneous flow theory, slurry pipeline transportation theory and solid-liquid two-phase flow theory are applied to grouting technology of prestressed pipeline, and the applicability of the above theories is verified by hydraulic slope formula verification test. Based on the test of the influence of prestressed bellows and prestressed tendons on slurry velocity, the velocity attenuation coefficient of prestressed bellows on the velocity of slurry out of the pipe and the attenuation coefficient of prestressed tendons on the velocity of slurry out of the pipe are put forward. The area attenuation coefficient which is easy to calculate is introduced to obtain the guiding pressure for the grouting of prestressed bellows and prestressed pipeline with prestressed tendons.更多还原