T梁桥体外预应力加固前后静力性能分析

The static stress property analysis of T-typed bridge external prestressing before and after reinforcement

通过预应力损失理论和有限元方法,对T梁桥采用体外预应力加固后在恒载作用下的静力性能进行了分析,分析表明,体外预应力可以有效地降低梁体挠度,降低关键截面应力水平,有效地改善结构受力行为。

Through prestressing loss theoretical finite element method, the static property of T-typed bridge under dead loading effect reinforced by external prestressing was analyzed.The analysis indicated that external prestressing can reduce beam deflection effectively,reduce stress level of critical plane,and improve structural stress behavior effectively.