Tensile-plate anchorage (TPA) is widely used in steel cable-stayed bridges. However, due to the complex geometry of the anchorage, the stress concentration area will appear under the action of the dynamic load, leading to fatigue failure. In this paper, taking a cable-stayed bridge as an example, the theoretical analysis and experimental investigation of the fatigue performance of TPA are performed. At first, a full-bridge finite element model was set up to obtain the severest cable force and cable force amplitude under fatigue load. Then the fatigue test of 1:1.5 specimen was carried out. The maximum principal stress of TPA was 32.24 MPa and the maximum deformation was 1.6 mm. During the loading process, TPA was in elastic working state. After 2 million fatigue load cycles, no cracks were found. At last, the fatigue performance of TPA was analyzed with the theory of critical distances (TCD). The results of the theoretical analysis and fatigue test show that the fatigue performance of TPA could satisfy the use requirement.

张拉板锚具（TPA）广泛应用于钢斜拉桥。但由于锚具的几何形状复杂，在动载作用下会出现应力集中区，导致疲劳破坏。本文以某斜拉桥为例，对TPA的疲劳性能进行了理论分析和试验研究。首先建立全桥有限元模型，得到疲劳载荷下最严重的索力和索力幅值。然后进行1:1.5试件的疲劳试验。TPA的最大主应力为32.24 MPa，最大变形为1.6 mm。加载过程中，TPA处于弹性工作状态。经过200万次疲劳载荷循环后，未发现裂纹。终于，采用临界距离理论(TCD)对TPA的疲劳性能进行了分析。理论分析和疲劳试验结果表明TPA的疲劳性能满足使用要求。