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,鉴于目前对于多棱锥型钢管杆挠度的理论计算方法研究相对较单一,本研究将根据梁的挠曲线微分方程理论,结合法兰节点螺栓滑移,推导出在常见荷载(弯矩M、水平力P和均布力q)作用下多棱锥型钢管杆挠度和附加弯矩的计算方法,建议按螺栓孔的间隙计算法兰盘的滑移量,并考虑相应的转角放大系数。最后,选取典型钢管杆进行对比分析,得出了一些重要结论,不考虑法兰螺栓滑移计算得到的位移值与有限元方法解约有7%的误差,附加弯矩引起的挠度占总挠度约为2%。
Multi-pyramid steel pipe pole is widely used in transmission lines around cities,and flange connection is usually used for pipe to pipe connection.In view of the relatively single theoretical calculation method for the deflection of multi pyramid steel pipe pole,this paper will combine the bolt slip of flange joint according to the deflection curve differential equation theory of beam,and deduce the common load(bending moment M,horizontal force P and uniformly distributed force q)calculation method of deflection and additional bending moment of multi pyramid steel pipe pole under action.It is suggested to calculate the slip amount of flange plate according to the clearance of bolt hole and consider the corresponding angle amplification factor.Finally,some important conclusions are drawn from the comparative analysis of typical steel pipe pole.The displacement value calculated without considering the slip of flange bolt has about 7%error with the solution of finite element method,and the deflection caused by additional bending moment accounts for about 2%of the total deflection.
作者
潘峰
陈赛慧
陈远
丁磊
PAN Feng;CHEN Saihui;CHEN Yuan;DING Lei(Zhejiang Electric Power Design Institute,China Energy Engineering Group Co.,Ltd.,310012 Hangzhou,China;State Grid Zhejiang Economic Research Institute,310016 Hangzhou,China;Department of Civil Engineering,Zhejiang University,310030 Hangzhou,China)
出处
《应用力学学报》
北大核心
2025年第3期580-589,共10页
Chinese Journal of Applied Mechanics
基金
国家自然科学基金资助项目(No.51878607)。
关键词
输电线路
拔梢钢管杆
螺栓滑移
截面惯性矩
挠度
附加弯矩
transmission line
taper steel pipe pole
bolt slip
section moment of inertia
deflection
additional bending moment
