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本文探讨重复荷载对部分预应力混凝土梁疲劳抗剪强度的影响。根据13片梁试验结果的分析,并采用上弦杆倾斜的铰接桁架模型,得出了部分预应力混凝土梁的疲劳抗剪强度计算公式,可供设计参考。
This paper discusses the effect of repeated loading on the shear strength of partially prestressed concrete beams. According to the analysis of the results of the 13-ply beam test, the formula of the fatigue shear strength of the partially prestressed concrete beam is obtained using the model of the hinged truss with the tilting of the upper chord, which can be used as a reference for design.