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针对钢筋混凝土梁在箍筋严重锈蚀和轻度锈蚀两种情况下,分别基于极限平衡理论、等效桁架理论和“梁-拱”作用理论,对锈蚀混凝土梁斜截面抗剪承载力进行计算,分析对比了现有锈蚀箍筋混凝土梁抗剪性能的实用性。依据箍筋锈蚀程度不同,提出了锈蚀箍筋混凝土梁抗剪强度计算公式,对建立的锈蚀箍筋混凝土梁的抗剪承载力理论进行了验证。
For the two cases of severe corrosion and mild corrosion of reinforced concrete beams, the shear strength of oblique cross-section of corroded concrete beams was respectively calculated based on the theory of limit equilibrium, equivalent truss theory and “beam-arch” theory The practicability of shear strength of the existing corroded stirrup reinforced concrete beams is calculated and analyzed. According to the different degree of corrosion of stirrups, the formula of shear strength of the corroded stirrup reinforced concrete beams is proposed, and the shear capacity theory of the corroded stirrup reinforced concrete beams is validated.