【摘要】 转向块是体外后张预应力桥梁一个特别的设计,体外预应力筋通过转向块改变方向从而形成预应力折线配束,但其结构形式不规则,应力状态较为复杂。文章通过对一肋式转向块进行实体有限元模拟仿真分析,揭示了转向块的受力特性,并对其设计提出了相关的建议。更多还原

【Abstract】 The deviator is a special design of externally prestressed box-girder bridges.Externally prestressed tendons change direction through deviators,so that prestressed tendons of polygonal line can form.However,stress state of the deviator is complicated because of its irregularity.This article analyzes one rib deviator with solid finite element models to reveal its mechanical characteristics,and puts forward some suggestions on its design.更多还原