系统可靠度可以作为既有桥梁结构有效评估的重要工具。主要研究桥梁结构系统,如结合梁桥的系统特性,目的是识别荷载及抗力参数,确切地阐述极限状态函数,提出作为结构系统的全桥的可靠度分析步骤。对桥梁单独构件(主梁)进行了可靠度计算,并与桥梁的系统可靠度进行比较。得出的系统可靠度可以用作合理的桥梁设计及评估的依据。 System reliability can be used as an important tool for effective assessment of existing bridge structures. The main research is the bridge structural system, such as the system characteristics of the combined beam bridge, the purpose is to identify the load and resistance parameters, the exact state of the limit state function, proposed as a full bridge system structure reliability analysis steps. The reliability of bridge components is calculated and compared with the bridge system reliability. The resulting system reliability can be used as a basis for rational bridge design and evaluation.