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首页> 外文会议>Advances and experiences with pipelines and trenchless technology for water, sewer, gas, and oil applications >The Stress Analysis of Drilling Rod in Horizontal Directional Drilling DuringTrenchless Construction of Underground Pipelines
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The Stress Analysis of Drilling Rod in Horizontal Directional Drilling DuringTrenchless Construction of Underground Pipelines

机译：地下管道无动静施工中水平定向钻井中钻杆的应力分析

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摘要

Due to its advantages, trenchless technology has been widely used all over the worldrnduring construction of underground pipelines, and horizontal directional drilling is thernmost popular trenchless technology. Because a drilling rod is subjected to the mostrncomplicated stress and the harshest working condition among all components in arnhorizontal directional drilling system, this paper lays emphasis on stress analysis ofrndrilling rods. The finite element method and the computer software ANSYS are used torncalculate the stress in the drilling rod. Also, the effects of torsional moment on the stressrnvalue and distribution are analyzed as well. The results of the above analyses give thernlocation of the maximum Von Mises stress along the rod and indicate the relationshiprnbetween maximum stress and the curvature radius of drilling rod. Generally speaking,rnthe maximum stress usually occurs near the joints of the drilling rod, the rod stressrndecreases with an increase in curvature radius, and an increase in the torsional momentrnon the drilling rod can significantly increase the rod stress.
机译：由于其优势，非开挖技术在地下管道的建设中已被全世界广泛使用，而水平定向钻井是最流行的非开挖技术。由于水平定向钻进系统中所有部件中钻杆承受的应力最复杂，工作条件最苛刻，因此本文着重分析钻杆的应力。用有限元法和计算机软件ANSYS对钻杆中的应力进行计算。此外，还分析了扭矩对应力值和分布的影响。上述分析结果给出了沿杆的最大冯·米塞斯应力的分布，并指出了最大应力与钻杆曲率半径之间的关系。一般而言，最大应力通常发生在钻杆的接头附近，随着曲率半径的增大，杆应力会减小，而扭转力矩的增大会大大增加钻杆的应力。

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