PE管水平定向钻最大拖拉力的探讨

Discussion on Maximum Traction Force of PE Pipe Horizontal Directional Drilling

从规范中PE管水平定向钻最大拖拉力的公式出发,按照最大拖拉应力不大于管材拉伸屈服应力的50%的原则,分析得出最大拖拉力不仅与管道公称直径、标准尺寸比有关,还与管材的拉伸屈服应力有关。PE管水平定向钻机实际产生的拖拉力不应大于按管材拉伸屈服应力的50%计算出的最大拖拉力。

Starting from the formula of the maximum traction force of the PE pipe horizontal directional drilling in the specification,according to the principle that the maximum traction stress is not more than 50% of the tensile yield stress of the pipe,the analysis shows that the maximum traction force is not only related to the pipe nominal diameter and standard size ratio,but also to the tensile yield stress of the pipe. The actual traction force of the PE pipe horizontal directional drilling machine should not be greater than the maximum traction force calculated by 50% of the tensile yield stress of the pipe.