某连续刚构桥病害分析及加固方法的研究

Analysis of the damage of a certain continuous rigid-frame bridge and research into its reinforcement means

以体外预应力在某连续刚构桥加固中的应用为例,通过对全桥裂缝情况及病害原因的分析,提出体外预应力加固方法,对箱梁结构的竖向位移和混凝土应力进行计算,分析其加固的效果,结果表明,该法改善了箱梁混凝土的应力状态,对结构的补强起到了一定的作用。

Taking the application of external prestress in reinforcing a certain continuous rigid-frame bridge as an example, the author proposes external pre-stressed reinforcement method through analyzes the condition of bridge cracks and causes of the damage, calculates vertical displacement and concrete stress of box-girder structure, analyzes its strengthening effect, and shows that this method ameliorates stress state of box-girder concrete and plays certain roles in reinforcing structure.