关键词: 桥梁工程, 承载力演变理论, 概化, 耗散, 衰变, 溃损, 提升

Abstract: A new bridge carrying-capacity changing theory is proposed in the paper and then generalized as four changing phases: a dissipation phase, a deterioration phase, a destruction phase and a promotion phase. In turn, the scientific definitions, the features, the influential factors, the effect quantification and model systems corresponding to the different four phases are summarized to provide theoretical and applicable guide for the technical evaluation and rebuilding of aged bridges

Key words: bridge engineering, carrying-capacity changing theory, summary, dissipation, deterioration, destruction, promotion