服役风荷载作用下架空地线的性能研究
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摘要
为了研究服役风荷载作用下架空地线的性能,首先基于有限元理论建立架空地线非线性有限元模型。进一步的建立了架空地线的风荷载模型及其风致响应非线性分析计算方法。分析表明:风荷载作用下各层单股线的张力和总张力相比,具有基本相同的变化趋势,各股线张力与总张力之间呈现线性关系。风荷载作用下,地线各层股线张力非常接近。
In order to study the force-bearing capacity of overhead ground wires subjected to service wind loading,a nonlinear finite element model of overhead ground wires was constructed based on finite element theory.Then,the model of the overhead ground wires subjected to wind loading and nonlinear analysis method for wind-induced responses were constructed.The results indicate that the tensile forces of the single strand of each layer subjected to wind loading have the same trend compared with the tensile forces of the whole wires,and the relationship of tensile forces between each strand and the whole wires is linear.Tensile forces of each layer of the ground wires subjected to wind loading are very close.
In order to study the force-bearing capacity of overhead ground wires subjected to service wind loading,a nonlinear finite element model of overhead ground wires was constructed based on finite element theory.Then,the model of the overhead ground wires subjected to wind loading and nonlinear analysis method for wind-induced responses were constructed.The results indicate that the tensile forces of the single strand of each layer subjected to wind loading have the same trend compared with the tensile forces of the whole wires,and the relationship of tensile forces between each strand and the whole wires is linear.Tensile forces of each layer of the ground wires subjected to wind loading are very close.
引文
[1]Jamaleddine A.Weigh-dropping Simulation of Iceshedding Effects on an Overhead Transmission Line Model[A].Proceedings of 7th International Workshop on Atmospheric Icing Structures[C].Canada:Quebec University,1996.
[2]王少华.输电线路覆冰导线舞动及其对塔线体系力学特性影响的研究[D].重庆:重庆大学,2008.
[3]Yasui H,Marukawa H,Momomura Y,et al.Analytical Study on Wind-induced Vibration of Power Transmission Towers[J].Journal of Wind Engineering and Industrial Aerodynamics,1999,83(1-3):431-441.
[4]Harikrishna P,Annadurai A,Gomathinayagam S,et al.Full Scale Measurements of the Structural Response of a 50 m Guyed Mast Under Wind Loading[J].Engineering Structure,2003,25(1):859-867.
[5]李鹏云,陈波,张峰,等.不对称导线对输电转角塔动力性能影响研究[J].武汉理工大学学报,2012,34(8):113-117.
[6]陈波,瞿伟廉,郑瑾.输电塔线体系风振反应的半主动摩擦阻尼控制[J].工程力学,2009,26(1):221-226.
[7]Chen B,Zheng J,Qu W L.Control of Wind-induced Response of Transmission Tower-line System by Using Magnetorheological Dampers[J].International Journal of Structural Stability and Dynamics,2009,9(4):661-685.
[8]邓静伟,张宇,陈波.外层腐蚀对输电线路架空地线承载力的影响[J].土木工程与管理学报,2018,35(5):77-81.
[9]张宇,杨繁,曾祥.股线挤压效应对架空地线受力性能影响研究[J].土木工程与管理学报,2018,35(5):34-38.
[2]王少华.输电线路覆冰导线舞动及其对塔线体系力学特性影响的研究[D].重庆:重庆大学,2008.
[3]Yasui H,Marukawa H,Momomura Y,et al.Analytical Study on Wind-induced Vibration of Power Transmission Towers[J].Journal of Wind Engineering and Industrial Aerodynamics,1999,83(1-3):431-441.
[4]Harikrishna P,Annadurai A,Gomathinayagam S,et al.Full Scale Measurements of the Structural Response of a 50 m Guyed Mast Under Wind Loading[J].Engineering Structure,2003,25(1):859-867.
[5]李鹏云,陈波,张峰,等.不对称导线对输电转角塔动力性能影响研究[J].武汉理工大学学报,2012,34(8):113-117.
[6]陈波,瞿伟廉,郑瑾.输电塔线体系风振反应的半主动摩擦阻尼控制[J].工程力学,2009,26(1):221-226.
[7]Chen B,Zheng J,Qu W L.Control of Wind-induced Response of Transmission Tower-line System by Using Magnetorheological Dampers[J].International Journal of Structural Stability and Dynamics,2009,9(4):661-685.
[8]邓静伟,张宇,陈波.外层腐蚀对输电线路架空地线承载力的影响[J].土木工程与管理学报,2018,35(5):77-81.
[9]张宇,杨繁,曾祥.股线挤压效应对架空地线受力性能影响研究[J].土木工程与管理学报,2018,35(5):34-38.