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局部锈蚀钢筋混凝土梁的承载力衰减规律是混凝土结构耐久性研究的基本问题。本文采用有限元方法数值模拟了局部钢筋锈蚀对钢筋混凝土粘结强度的影响,并模拟了锈蚀钢筋混凝土梁抗弯承载力的衰减规律,通过引入钢筋锈蚀影响系数,建立了局部锈蚀钢筋混凝土梁结构的抗弯承载力计算方法,与实测结果对比验证了本文所建立计算方法的合理性,可作为实际工程中受腐蚀钢筋混凝土结构承载力定量评判的技术参考。
The law of ultimate bearing capacity of locally corroded RC beams is the basic problem in the study of durability of concrete structures. In this paper, the influence of local steel corrosion on the bond strength of reinforced concrete is numerically simulated by finite element method, and the attenuation law of the flexural strength of the reinforced concrete beam is simulated. By introducing the influence coefficient of steel corrosion, the local corrosion resistance of reinforced concrete beam structure The calculation method of bending bearing capacity compares with the measured results to verify the rationality of the calculation method established in this paper and can be used as a technical reference for the quantitative evaluation of the bearing capacity of corroded reinforced concrete structures in practical engineering.