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| 考虑刚度折减的多棱锥型套接钢管杆挠度及附加弯矩研究 |
| Study on Deflection and Additional Bending Moment of Slip-Joint Connection for Multi-Pyramidal Steel Pole Considering Stiffness Reduction |
| 投稿时间：2022-05-27 修订日期：2022-07-24 |
| DOI： |
| 中文关键词: 输电线路 拔梢钢管杆 套接 截面惯性矩 挠度 附加弯矩 |
| 英文关键词:Transmission line Steel pole Slip-joint connection Section moment of inertia |
| 基金项目:国家自然科学基金资助项目(51878607) |
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| 中文摘要: |
| 多棱锥型钢管杆广泛应用于城市周边输电线路,管与管之间连接通常采用法兰连接,套接连接应用不大,鉴于目前对于多棱锥型套接钢管杆挠度的计算方法研究相对较少,本文将根据梁的挠曲线微分方程理论,结合套接节点刚度折减,推导出在常见荷载(弯矩M、水平力P和均布力q)作用下多棱锥型套接钢管杆挠度和附加弯矩的计算方法。最后,选取典型套接钢管杆进行对比分析,得出了一些重要结论。本文对套接钢管杆挠度计算进行细致的研究,可作为输电线路钢管杆套接连接设计的参考。 |
| 英文摘要: |
| Multi pyramid steel pipe pole is widely used in transmission lines around cities. Flange connection is usually used for pipe to pipe connection, and slip-joint connection is not widely used. In view of the relatively few research on the calculation method of deflection of multi pyramid steel pipe pole, this paper will deduce the common load according to the theory of differential equation of deflection curve of beam and the reduction of stiffness of slip-joint joint (bending moment M, horizontal force P and uniformly distributed force q) calculation method of deflection and additional bending moment of multi pyramid slip-joint steel pole. Finally, select typical nested steel pipe rod for comparative analysis, and draw some important conclusions. This paper makes a detailed study on the deflection calculation of slip-joint steel pole, which can be used as a reference for the design of slip-joint connection of steel pole of transmission line. |
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