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为了深入研究折线配筋先张梁的力学性能,从功能与作用方面找到了各种弯起器的共性,从力学角度分析出弯起器在力学上所起的实质作用,为有限元分析中弯起器的简化模拟提供了一个较好的思路。之后以Ansys有限元分析软件为工具,采用分离式模型,建立了考虑弯起器作用的折线配筋先张梁非线性有限元分析模型,分析了考虑弯起器时先张梁折点部位局部应力分布状态,对比不考虑弯起器的应力分布状态后认为:弯起器除了起到对曲线预应力筋进行起弯、导向、定位、成形作用外,对先张梁预应力筋折点部位局部应力分布状态、局部最大应力都有一定的改善作用。
In order to study the mechanical properties of the pre-tensioned beam of the polygons reinforced in-depth, the commonalities of the various bends were found out from the aspects of function and function. The mechanics of the bends were analyzed from the mechanical point of view. For the finite element analysis Simplified simulator provides a better idea. Afterwards, Ansys finite element analysis software was used as a tool to establish the nonlinear finite element analysis model of the pre-tensioned beam of the pre-tensioned beam considering the action of the beveller, and to analyze the local stress distribution of the pre-tensioned beam State, the contrast does not consider the stress distribution state of the bends, it is considered that the bends not only play the role of bending, guiding, positioning and shaping of the prestressing tendon of the curve, but also the local stress Distribution, the maximum local stress has a certain degree of improvement.