Preventive maintenance is one of the important development directions in maintenance engineering of steel bridge. To improve the pertinence of fatigue detection and preventive maintenance of steel bridge decks, a prediction method for key damaged parts was established. The process of method establishment and verification were described detailly, including a real bridge test, finite element analysis and theoretical calculation. During the process, the scopes of the stress influence areas and the stress characteristics of the vulnerable details on steel bridge deck were obtained. Through the application in practical engineering, the feasibility and validity of the method were well verified.

预防性维护是钢桥维护工程的重要发展方向之一。为了提高钢桥面板疲劳检测和预防性维修的针对性，建立了关键损伤部位的预测方法。详细描述了方法的建立和验证过程，包括实际桥梁测试，有限元分析和理论计算。在此过程中，获得了钢桥面板应力影响区域的范围和易损细节的应力特征。通过在实际工程中的应用，验证了该方法的可行性和有效性。