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在文（１） 基础上讨论了矩阵方程的迭代处理， 并对典型跨越结构在不同载荷条件下位移和内力进行了计算分析， 从工程角度按规范进行了结构强度和稳定性验算及管壁皱折的产生原因分析。结果表明， 管壁皱折的产生与输油工艺变化后出站油温提高及输量减少后输送压力降低有关， 与固定墩可能产生的轴向位移有关。
On the basis of (1), the iterative processing of matrix equation is discussed, and the displacement and internal force of typical span structures under different loading conditions are calculated and analyzed. From the engineering point of view, the calculation of structural strength and stability, Analysis of the Causes of Folding. The results show that the tube wall corrugation is related to the decrease of the delivery pressure after the change of the delivery process and the decrease of the delivery oil temperature, which may be related to the axial displacement possibly caused by the fixed pier.