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本文在文献［１］的基础上，进一步运用现代断裂力学和结构系统可靠性分析原理，导出了一种处理多种交变应力引起结构系统疲劳失效的计算方法，提出了一种考虑构件腐蚀、在交变应力及地震力作用下结构系统安全寿命的评估方法，并开发出相应的计算机软件，对淮河跨越管桥结构系统进行评估，验证了该方法的有效性和可靠性。
Based on the literature [1], this paper further uses the principle of modern fracture mechanics and structural system reliability analysis to derive a calculation method to deal with the fatigue failure of structural system caused by a variety of alternating stresses. A method to consider the component corrosion, The method of evaluating the safety life of structural system under alternating stress and seismic force and developing corresponding computer software to evaluate the structural system of Huaihe River crossing over pipe-bridge verify the effectiveness and reliability of this method.