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非对称载荷下斜索随塔顶滑轮动作而产生的滑移增加了跨越管道结构分析的复杂性。按变形几何条件导出了非对称承载时斜索张力与斜索滑移、伸长及管道变形的关系,应用数值方法并结合有限元法通过试算迭代求得了非对称加载下沧临管道大浪淀跨越管道下拉筋的平衡拉力,以此为基础对该处下拉筋断裂原因作了初步分析。在进行下拉筋断裂后管道失衡变形的模拟计算基础上对结构强度和稳定问题进行了评估,结果表明,提出的分析方法是可行的。
Slippage caused by the action of overhead cables with overhead pulleys under asymmetric loads increases the complexity of the analysis across the pipe structure. According to the deformation geometry, the relationship between the cable tension and the cable slip, elongation and pipe deformation under asymmetric load is deduced. Numerical simulation and finite element method The tension across the pipe under the tension, as a basis for the Department of the reasons for the rupture of the lower bead made a preliminary analysis. The strength and stability of the structure were evaluated based on the simulation calculation of the unbalance deformation of the pipe after the failure of the pull-down bar. The results show that the proposed method is feasible.