服役风荷载作用下架空地线的性能研究

Performance Investigation on Ground Wires Subjected to Service Wind Loading

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.