【摘要】 输电线路钢管跨越架的力学特性对跨越施工的安全可靠性影响重大，以优化跨越架的设计和搭建方案为目的，以某实际工程为例，运用ANSYS软件对钢管跨越架进行参数化建模，计算并施加跨越架所受风荷载，分析了跨越架构造形式对其力学性能的影响规律。结果表明，随着立杆间距的增大，跨越架的最大应力与拉线拉力逐渐减小，屈曲因子呈现减小趋势；跨越架横杆步距的变化对最大应力与拉线拉力影响较小，其屈曲因子随其增大呈现非线性增大；排距的变化对跨越架最大应力影响较小，但拉线拉力随着排距增大呈现非线性减小，跨越架的屈曲因子随着排距变化呈现非线性变化。在实际工程中为确保其结构的稳定性和安全性，建议跨越架的立杆间距与横杆步距控制在1.5 m～2 m，排距控制在2 m～3 m。更多还原

【Abstract】 The mechanical characteristics of steel pipe crossing structures for transmission lines have a significant impact on the safety and reliability of crossing construction, with the aim of optimizing the design and construction scheme of crossing structures. Taking a practical project as an example, ANSYS software is used to parameterize the modeling of steel pipe crossing frames, wind loads on the crossing frames are calculated and applied, and the influence of the structure of the crossing frames on their mechanical properties is analyzed. The results indicate that as the spacing between the poles increases, the maximum stress of the crossing structure and the tension of the cable gradually decrease, and the buckling factor shows a decreasing trend. The variation of the horizontal bar spacing has little effect on the maximum stress and tension of the tension wire, and the buckling factor shows a nonlinear increase as it increases. The change in spacing has a relatively small impact on the maximum stress of the crossing structure, but the tension of the cable decreases nonlinearly with the increase of spacing, and the buckling factor of the crossing structure changes nonlinearly with the change of spacing. It is recommended that in practical engineering, the spacing between the uprights and the step distance of the crossbars of the crossing structure should be controlled between 1. 5 m and 2 m, and the row spacing should be controlled between 2 m and 3 m to ensure the stability and safety of the structure.更多还原