With the elastic scope of design for bridge and pontoon structures which are used continually,it is necessary for the structures to be forecasted when their elasticity is invalid.

• 鉴于渡河桥梁结构必须具备重复使用的特点,其设计范围仅涉及弹性理念,因此必须对服役渡河桥梁装备结构的弹性失效进行预测。