桥梁加固工程中体外预应力法的应用建议研讨

External Prestressing Application of Reinforcing Bridge Engineering

当桥梁产生不利弯矩,使得桥梁承载力削弱,可将体外预应力拉杆锚固在桥梁的两端,往不利弯矩的相反方向施加轴向压力和弯矩,抵消不利弯矩产生的自重应力和活荷载应力,可起到良好的加固效果。为进一步提高体外预应力法的应用水平,论文以某桥梁工程为例,围绕工程概况选择体外预应力加固方法,并提出该方法在案例桥梁工程中的应用建议。

When the bridge adversely moment, making a bridge carrying capacity weakening external prestressing rod can be anchored at both ends of the bridge, in the opposite direction to the negative moments and moments applied axial pressure, weight and stress generated offset the adverse moments live load stress can play a good reinforcement effect. To further enhance the level of application of external prestressing method, the article will be a bridge project, for example, around a project overview select external prestressing reinforcement methods, and proposed application of the method is recommended in case of bridge engineering.