钢-混凝土组合加固部分预应力混凝土旧桥的试验研究

部分预应力混凝土I型或T型梁桥,由于预应力损失、裂缝损伤等造成主梁正常使用状态下刚度不足,采用钢-混凝土组合加固主梁,通过原梁及加固梁的加载试验,表明加固效果十分显著。应用ANSYS有限元程序对钢-混凝土加固梁进行变形分析,可得到加固技术效果评价指标值。

Experimental Research of Steel and Concrete Composite Reinforcement to Partially Old Prestressed Concrete Bridge

For partially prestressed concrete I or T girder bridge, there is no sufficient stiffness owing to damage like prestress loss and cracks etc. The experiments of original and reinforced girders have been proved that the effect is remarkable to apply steel and concrete composite reinforcement method. Deformation analysis of steel and concrete composite reinforced girder is conducted by AN- SYS, and the reinforcement technical effect index is obtained.