埋地塑料圆形管道环刚度计算

Calculation of ring-bending stiffness of buried round plastic pipeline

为了有效控制工程中管材的费用,从而准确地确定埋地塑料圆形管道的环刚度,通过计算及工程经验比较,结果表明,由管道变形限值反推出环刚度的计算方法所得出的数值较精确。在计算过程中,经过多次比较,发现环刚度计算公式中参数的选取对计算结果影响很大,尤其是管侧土综合变形模量的选取。计算结果表明,获取准确的管侧土综合变形模量值对环刚度的确定有着举足轻重的作用。

In order to effectively control the cost of pipe materials in engineering, the ring-bending stiffness of buried round plastic pipeline needs to be accurately determined. Comparison of the calculated value and engineering experience shows that the value deduced by the ring-bending stiffness of the anti-deformation limit is accurate. In the ring-bending stiffness calculation, parameter selection, especially the selection of the soil deformation modulLus, had a significant effect on the calculation results. The calculated results show that to obtain accurate soil deformation modulus is vital to determination of the ring-bending stiffness.